java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/threadpooling_out3.mover.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:15:00,659 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:15:00,661 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:15:00,674 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:15:00,675 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:15:00,676 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:15:00,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:15:00,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:15:00,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:15:00,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:15:00,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:15:00,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:15:00,688 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:15:00,689 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:15:00,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:15:00,694 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:15:00,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:15:00,697 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:15:00,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:15:00,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:15:00,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:15:00,703 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:15:00,705 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:15:00,705 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:15:00,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:15:00,706 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:15:00,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:15:00,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:15:00,709 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:15:00,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:15:00,711 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:15:00,711 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 15:15:00,712 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 15:15:00,712 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 15:15:00,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 15:15:00,713 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 15:15:00,714 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:15:00,736 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:15:00,737 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:15:00,738 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:15:00,738 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:15:00,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:15:00,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:15:00,739 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:15:00,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:15:00,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:15:00,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:15:00,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:15:00,822 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:15:00,822 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:15:00,823 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out3.mover.bpl [2018-07-23 15:15:00,824 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out3.mover.bpl' [2018-07-23 15:15:00,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:15:00,933 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:15:00,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:15:00,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:15:00,935 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:15:00,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:00,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:00,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:00,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:01,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:01,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:01,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:01,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:15:01,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:15:01,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:15:01,041 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:15:01,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/1) ... [2018-07-23 15:15:01,148 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-23 15:15:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-23 15:15:01,149 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-23 15:15:01,676 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:15:01,677 INFO L202 PluginConnector]: Adding new model threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:01 BoogieIcfgContainer [2018-07-23 15:15:01,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:15:01,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:15:01,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:15:01,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:15:01,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:00" (1/2) ... [2018-07-23 15:15:01,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f70cd0 and model type threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:15:01, skipping insertion in model container [2018-07-23 15:15:01,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:01" (2/2) ... [2018-07-23 15:15:01,690 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_out3.mover.bpl [2018-07-23 15:15:01,700 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:15:01,710 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2018-07-23 15:15:01,764 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:15:01,765 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:15:01,765 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:15:01,765 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:15:01,765 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:15:01,765 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:15:01,766 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:15:01,766 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:15:01,766 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:15:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-07-23 15:15:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:15:01,795 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:01,796 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:15:01,796 INFO L414 AbstractCegarLoop]: === Iteration 1 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:01,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1484336, now seen corresponding path program 1 times [2018-07-23 15:15:01,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:01,938 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:01,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:15:01,946 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:15:01,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:15:01,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:01,965 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2018-07-23 15:15:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:02,692 INFO L93 Difference]: Finished difference Result 83 states and 244 transitions. [2018-07-23 15:15:02,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:15:02,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 15:15:02,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:02,721 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:15:02,721 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:15:02,725 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:15:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2018-07-23 15:15:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:15:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 188 transitions. [2018-07-23 15:15:02,802 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 188 transitions. Word has length 4 [2018-07-23 15:15:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:02,804 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 188 transitions. [2018-07-23 15:15:02,804 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:15:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 188 transitions. [2018-07-23 15:15:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:15:02,805 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:02,806 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:15:02,810 INFO L414 AbstractCegarLoop]: === Iteration 2 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:02,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1486647, now seen corresponding path program 1 times [2018-07-23 15:15:02,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:02,866 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:02,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:15:02,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:15:02,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:15:02,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:02,870 INFO L87 Difference]: Start difference. First operand 67 states and 188 transitions. Second operand 5 states. [2018-07-23 15:15:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:03,384 INFO L93 Difference]: Finished difference Result 141 states and 439 transitions. [2018-07-23 15:15:03,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:15:03,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 15:15:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:03,391 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:15:03,392 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:15:03,395 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:15:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 95. [2018-07-23 15:15:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:15:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 316 transitions. [2018-07-23 15:15:03,430 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 316 transitions. Word has length 4 [2018-07-23 15:15:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:03,431 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 316 transitions. [2018-07-23 15:15:03,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:15:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 316 transitions. [2018-07-23 15:15:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:15:03,432 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:03,432 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:15:03,433 INFO L414 AbstractCegarLoop]: === Iteration 3 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash 951517, now seen corresponding path program 1 times [2018-07-23 15:15:03,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:03,481 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:03,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:15:03,481 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:15:03,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:15:03,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:03,482 INFO L87 Difference]: Start difference. First operand 95 states and 316 transitions. Second operand 5 states. [2018-07-23 15:15:03,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:03,865 INFO L93 Difference]: Finished difference Result 161 states and 531 transitions. [2018-07-23 15:15:03,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:15:03,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 15:15:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:03,871 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:15:03,871 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:15:03,872 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:15:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 115. [2018-07-23 15:15:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:15:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 408 transitions. [2018-07-23 15:15:03,910 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 408 transitions. Word has length 4 [2018-07-23 15:15:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:03,911 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 408 transitions. [2018-07-23 15:15:03,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:15:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 408 transitions. [2018-07-23 15:15:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:03,914 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:03,915 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:03,915 INFO L414 AbstractCegarLoop]: === Iteration 4 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1424666997, now seen corresponding path program 1 times [2018-07-23 15:15:03,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:03,944 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:03,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:03,945 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:03,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:03,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:03,946 INFO L87 Difference]: Start difference. First operand 115 states and 408 transitions. Second operand 7 states. [2018-07-23 15:15:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:04,890 INFO L93 Difference]: Finished difference Result 429 states and 1559 transitions. [2018-07-23 15:15:04,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:04,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:04,896 INFO L225 Difference]: With dead ends: 429 [2018-07-23 15:15:04,896 INFO L226 Difference]: Without dead ends: 423 [2018-07-23 15:15:04,897 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-23 15:15:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 197. [2018-07-23 15:15:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:15:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 815 transitions. [2018-07-23 15:15:04,953 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 815 transitions. Word has length 6 [2018-07-23 15:15:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:04,954 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 815 transitions. [2018-07-23 15:15:04,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 815 transitions. [2018-07-23 15:15:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:04,956 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:04,957 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:04,957 INFO L414 AbstractCegarLoop]: === Iteration 5 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:04,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1424667000, now seen corresponding path program 1 times [2018-07-23 15:15:04,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:04,988 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:04,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:04,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:04,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:04,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:04,990 INFO L87 Difference]: Start difference. First operand 197 states and 815 transitions. Second operand 7 states. [2018-07-23 15:15:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:06,034 INFO L93 Difference]: Finished difference Result 469 states and 1652 transitions. [2018-07-23 15:15:06,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:06,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:06,041 INFO L225 Difference]: With dead ends: 469 [2018-07-23 15:15:06,041 INFO L226 Difference]: Without dead ends: 463 [2018-07-23 15:15:06,042 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-07-23 15:15:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 221. [2018-07-23 15:15:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:15:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 931 transitions. [2018-07-23 15:15:06,123 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 931 transitions. Word has length 6 [2018-07-23 15:15:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:06,124 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 931 transitions. [2018-07-23 15:15:06,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 931 transitions. [2018-07-23 15:15:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:06,128 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:06,128 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:06,129 INFO L414 AbstractCegarLoop]: === Iteration 6 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1424683768, now seen corresponding path program 1 times [2018-07-23 15:15:06,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:06,163 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:06,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:06,163 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:06,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:06,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:06,164 INFO L87 Difference]: Start difference. First operand 221 states and 931 transitions. Second operand 7 states. [2018-07-23 15:15:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:07,094 INFO L93 Difference]: Finished difference Result 425 states and 1563 transitions. [2018-07-23 15:15:07,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:07,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:07,100 INFO L225 Difference]: With dead ends: 425 [2018-07-23 15:15:07,100 INFO L226 Difference]: Without dead ends: 419 [2018-07-23 15:15:07,101 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-23 15:15:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 235. [2018-07-23 15:15:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:15:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 1000 transitions. [2018-07-23 15:15:07,172 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 1000 transitions. Word has length 6 [2018-07-23 15:15:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:07,173 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 1000 transitions. [2018-07-23 15:15:07,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 1000 transitions. [2018-07-23 15:15:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:07,174 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:07,175 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:07,175 INFO L414 AbstractCegarLoop]: === Iteration 7 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1424683771, now seen corresponding path program 1 times [2018-07-23 15:15:07,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:07,206 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:07,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:07,207 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:07,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:07,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:07,208 INFO L87 Difference]: Start difference. First operand 235 states and 1000 transitions. Second operand 7 states. [2018-07-23 15:15:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:08,024 INFO L93 Difference]: Finished difference Result 461 states and 1684 transitions. [2018-07-23 15:15:08,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:08,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:08,033 INFO L225 Difference]: With dead ends: 461 [2018-07-23 15:15:08,033 INFO L226 Difference]: Without dead ends: 455 [2018-07-23 15:15:08,034 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-07-23 15:15:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 233. [2018-07-23 15:15:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:15:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 991 transitions. [2018-07-23 15:15:08,121 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 991 transitions. Word has length 6 [2018-07-23 15:15:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:08,122 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 991 transitions. [2018-07-23 15:15:08,122 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 991 transitions. [2018-07-23 15:15:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:08,123 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:08,123 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:08,124 INFO L414 AbstractCegarLoop]: === Iteration 8 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:08,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1411058392, now seen corresponding path program 1 times [2018-07-23 15:15:08,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:08,169 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:08,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:08,171 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:08,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:08,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:08,172 INFO L87 Difference]: Start difference. First operand 233 states and 991 transitions. Second operand 7 states. [2018-07-23 15:15:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:08,909 INFO L93 Difference]: Finished difference Result 517 states and 1983 transitions. [2018-07-23 15:15:08,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:08,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:08,915 INFO L225 Difference]: With dead ends: 517 [2018-07-23 15:15:08,915 INFO L226 Difference]: Without dead ends: 511 [2018-07-23 15:15:08,916 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-07-23 15:15:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 302. [2018-07-23 15:15:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-23 15:15:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 1335 transitions. [2018-07-23 15:15:09,004 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 1335 transitions. Word has length 6 [2018-07-23 15:15:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:09,004 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 1335 transitions. [2018-07-23 15:15:09,004 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 1335 transitions. [2018-07-23 15:15:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:09,005 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:09,006 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:09,006 INFO L414 AbstractCegarLoop]: === Iteration 9 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1411058395, now seen corresponding path program 1 times [2018-07-23 15:15:09,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:09,028 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:09,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:09,028 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:09,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:09,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:09,029 INFO L87 Difference]: Start difference. First operand 302 states and 1335 transitions. Second operand 7 states. [2018-07-23 15:15:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:09,651 INFO L93 Difference]: Finished difference Result 728 states and 3098 transitions. [2018-07-23 15:15:09,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:09,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:09,657 INFO L225 Difference]: With dead ends: 728 [2018-07-23 15:15:09,657 INFO L226 Difference]: Without dead ends: 427 [2018-07-23 15:15:09,660 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-23 15:15:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 343. [2018-07-23 15:15:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-23 15:15:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1474 transitions. [2018-07-23 15:15:09,776 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1474 transitions. Word has length 6 [2018-07-23 15:15:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:09,776 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 1474 transitions. [2018-07-23 15:15:09,776 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1474 transitions. [2018-07-23 15:15:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:09,779 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:09,779 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:09,779 INFO L414 AbstractCegarLoop]: === Iteration 10 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1411063073, now seen corresponding path program 1 times [2018-07-23 15:15:09,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:09,809 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:09,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:09,810 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:09,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:09,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:09,810 INFO L87 Difference]: Start difference. First operand 343 states and 1474 transitions. Second operand 7 states. [2018-07-23 15:15:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:10,684 INFO L93 Difference]: Finished difference Result 595 states and 2261 transitions. [2018-07-23 15:15:10,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:10,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:10,691 INFO L225 Difference]: With dead ends: 595 [2018-07-23 15:15:10,691 INFO L226 Difference]: Without dead ends: 589 [2018-07-23 15:15:10,692 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2018-07-23 15:15:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 364. [2018-07-23 15:15:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-23 15:15:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1580 transitions. [2018-07-23 15:15:10,823 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1580 transitions. Word has length 6 [2018-07-23 15:15:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:10,823 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 1580 transitions. [2018-07-23 15:15:10,826 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1580 transitions. [2018-07-23 15:15:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:10,827 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:10,827 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:10,827 INFO L414 AbstractCegarLoop]: === Iteration 11 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1411063076, now seen corresponding path program 1 times [2018-07-23 15:15:10,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:10,854 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:10,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:10,855 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:10,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:10,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:10,856 INFO L87 Difference]: Start difference. First operand 364 states and 1580 transitions. Second operand 7 states. [2018-07-23 15:15:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:11,542 INFO L93 Difference]: Finished difference Result 516 states and 2071 transitions. [2018-07-23 15:15:11,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:11,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:11,548 INFO L225 Difference]: With dead ends: 516 [2018-07-23 15:15:11,548 INFO L226 Difference]: Without dead ends: 510 [2018-07-23 15:15:11,549 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:11,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2018-07-23 15:15:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 368. [2018-07-23 15:15:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-23 15:15:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1600 transitions. [2018-07-23 15:15:11,674 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1600 transitions. Word has length 6 [2018-07-23 15:15:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:11,674 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 1600 transitions. [2018-07-23 15:15:11,674 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1600 transitions. [2018-07-23 15:15:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:11,675 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:11,675 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:11,676 INFO L414 AbstractCegarLoop]: === Iteration 12 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1426049868, now seen corresponding path program 1 times [2018-07-23 15:15:11,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:11,697 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:11,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:11,697 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:11,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:11,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:11,698 INFO L87 Difference]: Start difference. First operand 368 states and 1600 transitions. Second operand 7 states. [2018-07-23 15:15:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:12,445 INFO L93 Difference]: Finished difference Result 577 states and 2252 transitions. [2018-07-23 15:15:12,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:12,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:12,452 INFO L225 Difference]: With dead ends: 577 [2018-07-23 15:15:12,453 INFO L226 Difference]: Without dead ends: 571 [2018-07-23 15:15:12,453 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2018-07-23 15:15:12,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 366. [2018-07-23 15:15:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-23 15:15:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1577 transitions. [2018-07-23 15:15:12,599 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1577 transitions. Word has length 6 [2018-07-23 15:15:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:12,600 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 1577 transitions. [2018-07-23 15:15:12,600 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1577 transitions. [2018-07-23 15:15:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:12,601 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:12,601 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:12,601 INFO L414 AbstractCegarLoop]: === Iteration 13 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1426049871, now seen corresponding path program 1 times [2018-07-23 15:15:12,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:12,623 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:12,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:12,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:12,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:12,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:12,627 INFO L87 Difference]: Start difference. First operand 366 states and 1577 transitions. Second operand 7 states. [2018-07-23 15:15:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:13,342 INFO L93 Difference]: Finished difference Result 546 states and 2186 transitions. [2018-07-23 15:15:13,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:13,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:13,348 INFO L225 Difference]: With dead ends: 546 [2018-07-23 15:15:13,349 INFO L226 Difference]: Without dead ends: 540 [2018-07-23 15:15:13,350 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2018-07-23 15:15:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 382. [2018-07-23 15:15:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-23 15:15:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1649 transitions. [2018-07-23 15:15:13,507 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1649 transitions. Word has length 6 [2018-07-23 15:15:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:13,507 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 1649 transitions. [2018-07-23 15:15:13,507 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1649 transitions. [2018-07-23 15:15:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:13,511 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:13,511 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:13,511 INFO L414 AbstractCegarLoop]: === Iteration 14 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1426468872, now seen corresponding path program 1 times [2018-07-23 15:15:13,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:13,529 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:13,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:13,529 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:13,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:13,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:13,530 INFO L87 Difference]: Start difference. First operand 382 states and 1649 transitions. Second operand 7 states. [2018-07-23 15:15:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:14,424 INFO L93 Difference]: Finished difference Result 607 states and 2405 transitions. [2018-07-23 15:15:14,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:14,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:14,441 INFO L225 Difference]: With dead ends: 607 [2018-07-23 15:15:14,441 INFO L226 Difference]: Without dead ends: 601 [2018-07-23 15:15:14,444 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-07-23 15:15:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 388. [2018-07-23 15:15:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-23 15:15:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1668 transitions. [2018-07-23 15:15:14,601 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1668 transitions. Word has length 6 [2018-07-23 15:15:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:14,601 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 1668 transitions. [2018-07-23 15:15:14,601 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1668 transitions. [2018-07-23 15:15:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:14,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:14,602 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:14,603 INFO L414 AbstractCegarLoop]: === Iteration 15 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:14,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1426468875, now seen corresponding path program 1 times [2018-07-23 15:15:14,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:14,624 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:14,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:14,624 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:14,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:14,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:14,625 INFO L87 Difference]: Start difference. First operand 388 states and 1668 transitions. Second operand 7 states. [2018-07-23 15:15:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:15,434 INFO L93 Difference]: Finished difference Result 635 states and 2531 transitions. [2018-07-23 15:15:15,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:15,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:15,443 INFO L225 Difference]: With dead ends: 635 [2018-07-23 15:15:15,443 INFO L226 Difference]: Without dead ends: 629 [2018-07-23 15:15:15,444 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2018-07-23 15:15:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 394. [2018-07-23 15:15:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-23 15:15:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1695 transitions. [2018-07-23 15:15:15,628 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1695 transitions. Word has length 6 [2018-07-23 15:15:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:15,628 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 1695 transitions. [2018-07-23 15:15:15,628 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1695 transitions. [2018-07-23 15:15:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:15,629 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:15,629 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:15,629 INFO L414 AbstractCegarLoop]: === Iteration 16 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1418563998, now seen corresponding path program 1 times [2018-07-23 15:15:15,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:15,671 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:15,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:15,672 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:15,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:15,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:15,672 INFO L87 Difference]: Start difference. First operand 394 states and 1695 transitions. Second operand 7 states. [2018-07-23 15:15:16,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:16,358 INFO L93 Difference]: Finished difference Result 811 states and 3241 transitions. [2018-07-23 15:15:16,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:16,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:16,366 INFO L225 Difference]: With dead ends: 811 [2018-07-23 15:15:16,366 INFO L226 Difference]: Without dead ends: 805 [2018-07-23 15:15:16,367 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2018-07-23 15:15:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 455. [2018-07-23 15:15:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-07-23 15:15:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 2000 transitions. [2018-07-23 15:15:16,552 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 2000 transitions. Word has length 6 [2018-07-23 15:15:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:16,553 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 2000 transitions. [2018-07-23 15:15:16,553 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 2000 transitions. [2018-07-23 15:15:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:16,554 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:16,554 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:16,554 INFO L414 AbstractCegarLoop]: === Iteration 17 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1418563871, now seen corresponding path program 1 times [2018-07-23 15:15:16,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:16,583 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:16,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:16,583 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:16,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:16,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:16,584 INFO L87 Difference]: Start difference. First operand 455 states and 2000 transitions. Second operand 7 states. [2018-07-23 15:15:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:17,313 INFO L93 Difference]: Finished difference Result 829 states and 3301 transitions. [2018-07-23 15:15:17,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:17,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:17,321 INFO L225 Difference]: With dead ends: 829 [2018-07-23 15:15:17,321 INFO L226 Difference]: Without dead ends: 823 [2018-07-23 15:15:17,322 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2018-07-23 15:15:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 480. [2018-07-23 15:15:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-07-23 15:15:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 2125 transitions. [2018-07-23 15:15:17,531 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 2125 transitions. Word has length 6 [2018-07-23 15:15:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:17,532 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 2125 transitions. [2018-07-23 15:15:17,532 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 2125 transitions. [2018-07-23 15:15:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:17,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:17,533 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:17,534 INFO L414 AbstractCegarLoop]: === Iteration 18 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:17,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1418567253, now seen corresponding path program 1 times [2018-07-23 15:15:17,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:17,556 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:17,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:17,557 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:17,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:17,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:17,558 INFO L87 Difference]: Start difference. First operand 480 states and 2125 transitions. Second operand 7 states. [2018-07-23 15:15:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:18,417 INFO L93 Difference]: Finished difference Result 858 states and 3471 transitions. [2018-07-23 15:15:18,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:18,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:18,427 INFO L225 Difference]: With dead ends: 858 [2018-07-23 15:15:18,427 INFO L226 Difference]: Without dead ends: 852 [2018-07-23 15:15:18,428 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2018-07-23 15:15:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 502. [2018-07-23 15:15:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2018-07-23 15:15:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 2231 transitions. [2018-07-23 15:15:18,751 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 2231 transitions. Word has length 6 [2018-07-23 15:15:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:18,752 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 2231 transitions. [2018-07-23 15:15:18,752 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 2231 transitions. [2018-07-23 15:15:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:18,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:18,753 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:18,753 INFO L414 AbstractCegarLoop]: === Iteration 19 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1418567126, now seen corresponding path program 1 times [2018-07-23 15:15:18,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:18,784 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:18,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:18,785 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:18,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:18,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:18,786 INFO L87 Difference]: Start difference. First operand 502 states and 2231 transitions. Second operand 7 states. [2018-07-23 15:15:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:19,510 INFO L93 Difference]: Finished difference Result 868 states and 3505 transitions. [2018-07-23 15:15:19,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:19,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:19,519 INFO L225 Difference]: With dead ends: 868 [2018-07-23 15:15:19,519 INFO L226 Difference]: Without dead ends: 862 [2018-07-23 15:15:19,520 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2018-07-23 15:15:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 516. [2018-07-23 15:15:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-07-23 15:15:19,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 2303 transitions. [2018-07-23 15:15:19,757 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 2303 transitions. Word has length 6 [2018-07-23 15:15:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:19,758 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 2303 transitions. [2018-07-23 15:15:19,758 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 2303 transitions. [2018-07-23 15:15:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:19,759 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:19,759 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:19,760 INFO L414 AbstractCegarLoop]: === Iteration 20 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1418649215, now seen corresponding path program 1 times [2018-07-23 15:15:19,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:19,783 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:19,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:19,783 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:19,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:19,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:19,784 INFO L87 Difference]: Start difference. First operand 516 states and 2303 transitions. Second operand 7 states. [2018-07-23 15:15:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:20,604 INFO L93 Difference]: Finished difference Result 903 states and 3839 transitions. [2018-07-23 15:15:20,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:15:20,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:20,614 INFO L225 Difference]: With dead ends: 903 [2018-07-23 15:15:20,614 INFO L226 Difference]: Without dead ends: 897 [2018-07-23 15:15:20,615 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:15:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2018-07-23 15:15:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 579. [2018-07-23 15:15:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2018-07-23 15:15:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 2625 transitions. [2018-07-23 15:15:20,869 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 2625 transitions. Word has length 6 [2018-07-23 15:15:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:20,870 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 2625 transitions. [2018-07-23 15:15:20,870 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 2625 transitions. [2018-07-23 15:15:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:20,871 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:20,871 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:20,872 INFO L414 AbstractCegarLoop]: === Iteration 21 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:20,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1418649218, now seen corresponding path program 1 times [2018-07-23 15:15:20,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:20,892 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:20,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:20,892 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:20,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:20,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:20,893 INFO L87 Difference]: Start difference. First operand 579 states and 2625 transitions. Second operand 7 states. [2018-07-23 15:15:21,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:21,734 INFO L93 Difference]: Finished difference Result 926 states and 3876 transitions. [2018-07-23 15:15:21,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:21,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:21,745 INFO L225 Difference]: With dead ends: 926 [2018-07-23 15:15:21,746 INFO L226 Difference]: Without dead ends: 920 [2018-07-23 15:15:21,747 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2018-07-23 15:15:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 585. [2018-07-23 15:15:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2018-07-23 15:15:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 2647 transitions. [2018-07-23 15:15:22,073 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 2647 transitions. Word has length 6 [2018-07-23 15:15:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:22,073 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 2647 transitions. [2018-07-23 15:15:22,073 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 2647 transitions. [2018-07-23 15:15:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:22,075 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:22,075 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:22,075 INFO L414 AbstractCegarLoop]: === Iteration 22 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1418665986, now seen corresponding path program 1 times [2018-07-23 15:15:22,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:22,089 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:22,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:22,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:22,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:22,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:22,091 INFO L87 Difference]: Start difference. First operand 585 states and 2647 transitions. Second operand 7 states. [2018-07-23 15:15:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:23,020 INFO L93 Difference]: Finished difference Result 970 states and 4136 transitions. [2018-07-23 15:15:23,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:23,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:23,033 INFO L225 Difference]: With dead ends: 970 [2018-07-23 15:15:23,033 INFO L226 Difference]: Without dead ends: 964 [2018-07-23 15:15:23,034 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2018-07-23 15:15:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 632. [2018-07-23 15:15:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2018-07-23 15:15:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2880 transitions. [2018-07-23 15:15:23,378 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2880 transitions. Word has length 6 [2018-07-23 15:15:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:23,379 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 2880 transitions. [2018-07-23 15:15:23,379 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2880 transitions. [2018-07-23 15:15:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:23,380 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:23,381 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:23,381 INFO L414 AbstractCegarLoop]: === Iteration 23 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1418665989, now seen corresponding path program 1 times [2018-07-23 15:15:23,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:23,396 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:23,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:23,396 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:23,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:23,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:23,397 INFO L87 Difference]: Start difference. First operand 632 states and 2880 transitions. Second operand 7 states. [2018-07-23 15:15:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:24,398 INFO L93 Difference]: Finished difference Result 1022 states and 4311 transitions. [2018-07-23 15:15:24,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:24,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:24,407 INFO L225 Difference]: With dead ends: 1022 [2018-07-23 15:15:24,407 INFO L226 Difference]: Without dead ends: 1016 [2018-07-23 15:15:24,408 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2018-07-23 15:15:24,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 601. [2018-07-23 15:15:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2018-07-23 15:15:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 2724 transitions. [2018-07-23 15:15:24,725 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 2724 transitions. Word has length 6 [2018-07-23 15:15:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:24,725 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 2724 transitions. [2018-07-23 15:15:24,725 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 2724 transitions. [2018-07-23 15:15:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:24,729 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:24,729 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:24,729 INFO L414 AbstractCegarLoop]: === Iteration 24 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:24,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1428529568, now seen corresponding path program 1 times [2018-07-23 15:15:24,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:24,750 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:24,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:24,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:24,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:24,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:24,752 INFO L87 Difference]: Start difference. First operand 601 states and 2724 transitions. Second operand 7 states. [2018-07-23 15:15:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:25,543 INFO L93 Difference]: Finished difference Result 1015 states and 4266 transitions. [2018-07-23 15:15:25,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:25,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:25,552 INFO L225 Difference]: With dead ends: 1015 [2018-07-23 15:15:25,552 INFO L226 Difference]: Without dead ends: 1009 [2018-07-23 15:15:25,553 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2018-07-23 15:15:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 605. [2018-07-23 15:15:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-07-23 15:15:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 2740 transitions. [2018-07-23 15:15:25,871 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 2740 transitions. Word has length 6 [2018-07-23 15:15:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:25,872 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 2740 transitions. [2018-07-23 15:15:25,872 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 2740 transitions. [2018-07-23 15:15:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:25,873 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:25,873 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:25,873 INFO L414 AbstractCegarLoop]: === Iteration 25 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:25,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1428529441, now seen corresponding path program 1 times [2018-07-23 15:15:25,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:25,891 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:25,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:25,892 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:25,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:25,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:25,893 INFO L87 Difference]: Start difference. First operand 605 states and 2740 transitions. Second operand 7 states. [2018-07-23 15:15:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:26,567 INFO L93 Difference]: Finished difference Result 859 states and 3697 transitions. [2018-07-23 15:15:26,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:15:26,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:26,574 INFO L225 Difference]: With dead ends: 859 [2018-07-23 15:15:26,574 INFO L226 Difference]: Without dead ends: 853 [2018-07-23 15:15:26,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:26,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2018-07-23 15:15:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 678. [2018-07-23 15:15:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2018-07-23 15:15:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 3106 transitions. [2018-07-23 15:15:26,865 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 3106 transitions. Word has length 6 [2018-07-23 15:15:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:26,865 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 3106 transitions. [2018-07-23 15:15:26,865 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 3106 transitions. [2018-07-23 15:15:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:26,866 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:26,867 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:26,867 INFO L414 AbstractCegarLoop]: === Iteration 26 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:26,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1428684411, now seen corresponding path program 1 times [2018-07-23 15:15:26,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:26,879 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:26,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:26,879 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:26,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:26,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:26,880 INFO L87 Difference]: Start difference. First operand 678 states and 3106 transitions. Second operand 7 states. [2018-07-23 15:15:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:27,657 INFO L93 Difference]: Finished difference Result 1205 states and 5205 transitions. [2018-07-23 15:15:27,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:27,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:27,663 INFO L225 Difference]: With dead ends: 1205 [2018-07-23 15:15:27,664 INFO L226 Difference]: Without dead ends: 1199 [2018-07-23 15:15:27,665 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2018-07-23 15:15:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 769. [2018-07-23 15:15:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2018-07-23 15:15:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 3553 transitions. [2018-07-23 15:15:27,981 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 3553 transitions. Word has length 6 [2018-07-23 15:15:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:27,981 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 3553 transitions. [2018-07-23 15:15:27,981 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 3553 transitions. [2018-07-23 15:15:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:27,982 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:27,983 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:27,983 INFO L414 AbstractCegarLoop]: === Iteration 27 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1428684414, now seen corresponding path program 1 times [2018-07-23 15:15:27,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:27,994 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:27,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:27,994 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:27,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:27,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:27,995 INFO L87 Difference]: Start difference. First operand 769 states and 3553 transitions. Second operand 7 states. [2018-07-23 15:15:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:28,737 INFO L93 Difference]: Finished difference Result 1153 states and 4942 transitions. [2018-07-23 15:15:28,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:28,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:28,743 INFO L225 Difference]: With dead ends: 1153 [2018-07-23 15:15:28,743 INFO L226 Difference]: Without dead ends: 1147 [2018-07-23 15:15:28,744 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2018-07-23 15:15:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 769. [2018-07-23 15:15:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2018-07-23 15:15:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 3545 transitions. [2018-07-23 15:15:29,122 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 3545 transitions. Word has length 6 [2018-07-23 15:15:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:29,122 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 3545 transitions. [2018-07-23 15:15:29,122 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:29,122 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 3545 transitions. [2018-07-23 15:15:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:29,123 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:29,123 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 15:15:29,124 INFO L414 AbstractCegarLoop]: === Iteration 28 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1428686967, now seen corresponding path program 1 times [2018-07-23 15:15:29,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:29,130 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:29,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:29,130 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:15:29,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:15:29,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:29,131 INFO L87 Difference]: Start difference. First operand 769 states and 3545 transitions. Second operand 4 states. [2018-07-23 15:15:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:29,561 INFO L93 Difference]: Finished difference Result 1263 states and 5677 transitions. [2018-07-23 15:15:29,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:15:29,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 15:15:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:29,565 INFO L225 Difference]: With dead ends: 1263 [2018-07-23 15:15:29,566 INFO L226 Difference]: Without dead ends: 744 [2018-07-23 15:15:29,567 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-23 15:15:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 636. [2018-07-23 15:15:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2018-07-23 15:15:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 2815 transitions. [2018-07-23 15:15:29,844 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 2815 transitions. Word has length 6 [2018-07-23 15:15:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:29,844 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 2815 transitions. [2018-07-23 15:15:29,844 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:15:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 2815 transitions. [2018-07-23 15:15:29,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:29,845 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:29,845 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 15:15:29,845 INFO L414 AbstractCegarLoop]: === Iteration 29 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:29,846 INFO L82 PathProgramCache]: Analyzing trace with hash 914427184, now seen corresponding path program 1 times [2018-07-23 15:15:29,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:29,850 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:29,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:29,851 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:15:29,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:15:29,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:29,851 INFO L87 Difference]: Start difference. First operand 636 states and 2815 transitions. Second operand 4 states. [2018-07-23 15:15:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:30,216 INFO L93 Difference]: Finished difference Result 1102 states and 4727 transitions. [2018-07-23 15:15:30,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:15:30,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 15:15:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:30,220 INFO L225 Difference]: With dead ends: 1102 [2018-07-23 15:15:30,220 INFO L226 Difference]: Without dead ends: 808 [2018-07-23 15:15:30,222 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2018-07-23 15:15:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 633. [2018-07-23 15:15:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-07-23 15:15:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 2754 transitions. [2018-07-23 15:15:30,632 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 2754 transitions. Word has length 6 [2018-07-23 15:15:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:30,633 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 2754 transitions. [2018-07-23 15:15:30,633 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:15:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 2754 transitions. [2018-07-23 15:15:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:30,634 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:30,634 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:30,634 INFO L414 AbstractCegarLoop]: === Iteration 30 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:30,634 INFO L82 PathProgramCache]: Analyzing trace with hash 914429929, now seen corresponding path program 1 times [2018-07-23 15:15:30,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:30,648 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:30,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:30,648 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:30,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:30,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:30,649 INFO L87 Difference]: Start difference. First operand 633 states and 2754 transitions. Second operand 7 states. [2018-07-23 15:15:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:31,445 INFO L93 Difference]: Finished difference Result 1150 states and 4682 transitions. [2018-07-23 15:15:31,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:31,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:31,451 INFO L225 Difference]: With dead ends: 1150 [2018-07-23 15:15:31,451 INFO L226 Difference]: Without dead ends: 1144 [2018-07-23 15:15:31,452 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2018-07-23 15:15:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 718. [2018-07-23 15:15:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2018-07-23 15:15:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 3142 transitions. [2018-07-23 15:15:31,897 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 3142 transitions. Word has length 6 [2018-07-23 15:15:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:31,898 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 3142 transitions. [2018-07-23 15:15:31,898 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 3142 transitions. [2018-07-23 15:15:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:31,898 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:31,899 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:31,899 INFO L414 AbstractCegarLoop]: === Iteration 31 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:31,899 INFO L82 PathProgramCache]: Analyzing trace with hash 914429932, now seen corresponding path program 1 times [2018-07-23 15:15:31,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:31,912 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:31,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:31,913 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:31,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:31,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:31,913 INFO L87 Difference]: Start difference. First operand 718 states and 3142 transitions. Second operand 7 states. [2018-07-23 15:15:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:33,073 INFO L93 Difference]: Finished difference Result 1204 states and 4985 transitions. [2018-07-23 15:15:33,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:33,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:33,081 INFO L225 Difference]: With dead ends: 1204 [2018-07-23 15:15:33,081 INFO L226 Difference]: Without dead ends: 1198 [2018-07-23 15:15:33,082 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2018-07-23 15:15:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 786. [2018-07-23 15:15:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2018-07-23 15:15:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 3422 transitions. [2018-07-23 15:15:33,788 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 3422 transitions. Word has length 6 [2018-07-23 15:15:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:33,789 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 3422 transitions. [2018-07-23 15:15:33,789 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 3422 transitions. [2018-07-23 15:15:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:33,790 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:33,790 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:33,790 INFO L414 AbstractCegarLoop]: === Iteration 32 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:33,791 INFO L82 PathProgramCache]: Analyzing trace with hash 914927334, now seen corresponding path program 1 times [2018-07-23 15:15:33,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:33,810 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:33,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:33,810 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:33,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:33,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:33,811 INFO L87 Difference]: Start difference. First operand 786 states and 3422 transitions. Second operand 7 states. [2018-07-23 15:15:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:34,981 INFO L93 Difference]: Finished difference Result 1233 states and 5154 transitions. [2018-07-23 15:15:34,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:34,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:34,985 INFO L225 Difference]: With dead ends: 1233 [2018-07-23 15:15:34,986 INFO L226 Difference]: Without dead ends: 1227 [2018-07-23 15:15:34,986 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2018-07-23 15:15:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 840. [2018-07-23 15:15:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2018-07-23 15:15:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3652 transitions. [2018-07-23 15:15:35,445 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3652 transitions. Word has length 6 [2018-07-23 15:15:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:35,445 INFO L471 AbstractCegarLoop]: Abstraction has 840 states and 3652 transitions. [2018-07-23 15:15:35,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3652 transitions. [2018-07-23 15:15:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:35,446 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:35,446 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:35,446 INFO L414 AbstractCegarLoop]: === Iteration 33 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash 914927207, now seen corresponding path program 1 times [2018-07-23 15:15:35,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:35,459 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:35,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:35,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:35,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:35,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:35,461 INFO L87 Difference]: Start difference. First operand 840 states and 3652 transitions. Second operand 7 states. [2018-07-23 15:15:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:36,374 INFO L93 Difference]: Finished difference Result 1202 states and 5037 transitions. [2018-07-23 15:15:36,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:36,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:36,377 INFO L225 Difference]: With dead ends: 1202 [2018-07-23 15:15:36,377 INFO L226 Difference]: Without dead ends: 1196 [2018-07-23 15:15:36,378 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2018-07-23 15:15:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 835. [2018-07-23 15:15:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2018-07-23 15:15:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 3630 transitions. [2018-07-23 15:15:36,779 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 3630 transitions. Word has length 6 [2018-07-23 15:15:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:36,779 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 3630 transitions. [2018-07-23 15:15:36,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 3630 transitions. [2018-07-23 15:15:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:36,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:36,780 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:36,781 INFO L414 AbstractCegarLoop]: === Iteration 34 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash 914023622, now seen corresponding path program 1 times [2018-07-23 15:15:36,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:36,806 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:36,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:36,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:36,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:36,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:36,807 INFO L87 Difference]: Start difference. First operand 835 states and 3630 transitions. Second operand 7 states. [2018-07-23 15:15:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:37,770 INFO L93 Difference]: Finished difference Result 1302 states and 5458 transitions. [2018-07-23 15:15:37,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:37,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:37,773 INFO L225 Difference]: With dead ends: 1302 [2018-07-23 15:15:37,774 INFO L226 Difference]: Without dead ends: 1300 [2018-07-23 15:15:37,774 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2018-07-23 15:15:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 861. [2018-07-23 15:15:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2018-07-23 15:15:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 3767 transitions. [2018-07-23 15:15:38,176 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 3767 transitions. Word has length 6 [2018-07-23 15:15:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:38,177 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 3767 transitions. [2018-07-23 15:15:38,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 3767 transitions. [2018-07-23 15:15:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:38,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:38,178 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:38,178 INFO L414 AbstractCegarLoop]: === Iteration 35 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:38,178 INFO L82 PathProgramCache]: Analyzing trace with hash 914023495, now seen corresponding path program 1 times [2018-07-23 15:15:38,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:38,194 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:38,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:38,194 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:38,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:38,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:38,194 INFO L87 Difference]: Start difference. First operand 861 states and 3767 transitions. Second operand 7 states. [2018-07-23 15:15:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:39,153 INFO L93 Difference]: Finished difference Result 1320 states and 5542 transitions. [2018-07-23 15:15:39,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:39,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:39,157 INFO L225 Difference]: With dead ends: 1320 [2018-07-23 15:15:39,157 INFO L226 Difference]: Without dead ends: 1314 [2018-07-23 15:15:39,157 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2018-07-23 15:15:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 855. [2018-07-23 15:15:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2018-07-23 15:15:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 3738 transitions. [2018-07-23 15:15:39,596 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 3738 transitions. Word has length 6 [2018-07-23 15:15:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:39,597 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 3738 transitions. [2018-07-23 15:15:39,597 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 3738 transitions. [2018-07-23 15:15:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:39,598 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:39,598 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:39,598 INFO L414 AbstractCegarLoop]: === Iteration 36 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:39,598 INFO L82 PathProgramCache]: Analyzing trace with hash 914026877, now seen corresponding path program 1 times [2018-07-23 15:15:39,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:39,613 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:39,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:39,613 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:39,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:39,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:39,613 INFO L87 Difference]: Start difference. First operand 855 states and 3738 transitions. Second operand 7 states. [2018-07-23 15:15:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:40,827 INFO L93 Difference]: Finished difference Result 1321 states and 5527 transitions. [2018-07-23 15:15:40,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:40,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:40,833 INFO L225 Difference]: With dead ends: 1321 [2018-07-23 15:15:40,833 INFO L226 Difference]: Without dead ends: 1315 [2018-07-23 15:15:40,834 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2018-07-23 15:15:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 863. [2018-07-23 15:15:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2018-07-23 15:15:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 3773 transitions. [2018-07-23 15:15:41,362 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 3773 transitions. Word has length 6 [2018-07-23 15:15:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:41,362 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 3773 transitions. [2018-07-23 15:15:41,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 3773 transitions. [2018-07-23 15:15:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:41,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:41,363 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:41,363 INFO L414 AbstractCegarLoop]: === Iteration 37 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash 914026750, now seen corresponding path program 1 times [2018-07-23 15:15:41,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:41,377 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:41,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:41,377 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:41,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:41,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:41,378 INFO L87 Difference]: Start difference. First operand 863 states and 3773 transitions. Second operand 7 states. [2018-07-23 15:15:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:42,467 INFO L93 Difference]: Finished difference Result 1331 states and 5585 transitions. [2018-07-23 15:15:42,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:42,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:42,471 INFO L225 Difference]: With dead ends: 1331 [2018-07-23 15:15:42,471 INFO L226 Difference]: Without dead ends: 1325 [2018-07-23 15:15:42,471 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2018-07-23 15:15:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 849. [2018-07-23 15:15:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2018-07-23 15:15:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 3706 transitions. [2018-07-23 15:15:42,919 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 3706 transitions. Word has length 6 [2018-07-23 15:15:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:42,919 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 3706 transitions. [2018-07-23 15:15:42,919 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 3706 transitions. [2018-07-23 15:15:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:42,920 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:42,920 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:42,920 INFO L414 AbstractCegarLoop]: === Iteration 38 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:42,921 INFO L82 PathProgramCache]: Analyzing trace with hash 913935975, now seen corresponding path program 1 times [2018-07-23 15:15:42,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:42,932 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:42,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:42,932 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:42,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:42,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:42,933 INFO L87 Difference]: Start difference. First operand 849 states and 3706 transitions. Second operand 7 states. [2018-07-23 15:15:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:43,866 INFO L93 Difference]: Finished difference Result 1442 states and 5955 transitions. [2018-07-23 15:15:43,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:43,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:43,870 INFO L225 Difference]: With dead ends: 1442 [2018-07-23 15:15:43,870 INFO L226 Difference]: Without dead ends: 1436 [2018-07-23 15:15:43,871 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2018-07-23 15:15:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 905. [2018-07-23 15:15:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2018-07-23 15:15:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 3981 transitions. [2018-07-23 15:15:44,356 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 3981 transitions. Word has length 6 [2018-07-23 15:15:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:44,356 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 3981 transitions. [2018-07-23 15:15:44,356 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 3981 transitions. [2018-07-23 15:15:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:44,357 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:44,357 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:44,357 INFO L414 AbstractCegarLoop]: === Iteration 39 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash 913935978, now seen corresponding path program 1 times [2018-07-23 15:15:44,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:44,373 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:44,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:44,374 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:44,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:44,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:44,374 INFO L87 Difference]: Start difference. First operand 905 states and 3981 transitions. Second operand 7 states. [2018-07-23 15:15:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:45,402 INFO L93 Difference]: Finished difference Result 1440 states and 5977 transitions. [2018-07-23 15:15:45,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:45,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:45,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:45,405 INFO L225 Difference]: With dead ends: 1440 [2018-07-23 15:15:45,405 INFO L226 Difference]: Without dead ends: 1434 [2018-07-23 15:15:45,406 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2018-07-23 15:15:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 889. [2018-07-23 15:15:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2018-07-23 15:15:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 3911 transitions. [2018-07-23 15:15:45,913 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 3911 transitions. Word has length 6 [2018-07-23 15:15:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:45,914 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 3911 transitions. [2018-07-23 15:15:45,914 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 3911 transitions. [2018-07-23 15:15:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:45,915 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:45,915 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:45,915 INFO L414 AbstractCegarLoop]: === Iteration 40 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash 913940656, now seen corresponding path program 1 times [2018-07-23 15:15:45,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:45,933 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:45,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:45,933 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:45,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:45,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:45,934 INFO L87 Difference]: Start difference. First operand 889 states and 3911 transitions. Second operand 7 states. [2018-07-23 15:15:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:46,889 INFO L93 Difference]: Finished difference Result 1361 states and 5672 transitions. [2018-07-23 15:15:46,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:46,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:46,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:46,892 INFO L225 Difference]: With dead ends: 1361 [2018-07-23 15:15:46,892 INFO L226 Difference]: Without dead ends: 1355 [2018-07-23 15:15:46,893 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2018-07-23 15:15:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 900. [2018-07-23 15:15:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2018-07-23 15:15:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 3963 transitions. [2018-07-23 15:15:47,404 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 3963 transitions. Word has length 6 [2018-07-23 15:15:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:47,404 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 3963 transitions. [2018-07-23 15:15:47,404 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 3963 transitions. [2018-07-23 15:15:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:47,405 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:47,405 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:15:47,405 INFO L414 AbstractCegarLoop]: === Iteration 41 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 913940659, now seen corresponding path program 1 times [2018-07-23 15:15:47,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:47,429 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:47,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:47,429 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:47,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:47,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:47,429 INFO L87 Difference]: Start difference. First operand 900 states and 3963 transitions. Second operand 7 states. [2018-07-23 15:15:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,571 INFO L93 Difference]: Finished difference Result 1349 states and 5655 transitions. [2018-07-23 15:15:48,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:48,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:15:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,575 INFO L225 Difference]: With dead ends: 1349 [2018-07-23 15:15:48,575 INFO L226 Difference]: Without dead ends: 1343 [2018-07-23 15:15:48,576 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2018-07-23 15:15:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 896. [2018-07-23 15:15:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2018-07-23 15:15:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 3945 transitions. [2018-07-23 15:15:49,149 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 3945 transitions. Word has length 6 [2018-07-23 15:15:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,149 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 3945 transitions. [2018-07-23 15:15:49,149 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 3945 transitions. [2018-07-23 15:15:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:49,150 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,150 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:49,150 INFO L414 AbstractCegarLoop]: === Iteration 42 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1202922012, now seen corresponding path program 1 times [2018-07-23 15:15:49,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,162 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:49,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:15:49,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:49,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:49,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:49,163 INFO L87 Difference]: Start difference. First operand 896 states and 3945 transitions. Second operand 8 states. [2018-07-23 15:15:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,261 INFO L93 Difference]: Finished difference Result 1234 states and 5206 transitions. [2018-07-23 15:15:50,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:50,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:15:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,264 INFO L225 Difference]: With dead ends: 1234 [2018-07-23 15:15:50,264 INFO L226 Difference]: Without dead ends: 1228 [2018-07-23 15:15:50,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2018-07-23 15:15:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 912. [2018-07-23 15:15:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2018-07-23 15:15:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 4031 transitions. [2018-07-23 15:15:50,811 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 4031 transitions. Word has length 7 [2018-07-23 15:15:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,811 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 4031 transitions. [2018-07-23 15:15:50,811 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 4031 transitions. [2018-07-23 15:15:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:50,812 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,813 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:50,813 INFO L414 AbstractCegarLoop]: === Iteration 43 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1202922387, now seen corresponding path program 1 times [2018-07-23 15:15:50,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,822 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:50,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:15:50,823 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:50,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:50,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:50,823 INFO L87 Difference]: Start difference. First operand 912 states and 4031 transitions. Second operand 8 states. [2018-07-23 15:15:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,826 INFO L93 Difference]: Finished difference Result 1218 states and 5153 transitions. [2018-07-23 15:15:51,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:51,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:15:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,829 INFO L225 Difference]: With dead ends: 1218 [2018-07-23 15:15:51,830 INFO L226 Difference]: Without dead ends: 1212 [2018-07-23 15:15:51,830 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2018-07-23 15:15:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 967. [2018-07-23 15:15:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2018-07-23 15:15:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 4282 transitions. [2018-07-23 15:15:52,420 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 4282 transitions. Word has length 7 [2018-07-23 15:15:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,420 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 4282 transitions. [2018-07-23 15:15:52,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 4282 transitions. [2018-07-23 15:15:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:52,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,422 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:52,422 INFO L414 AbstractCegarLoop]: === Iteration 44 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1202913673, now seen corresponding path program 1 times [2018-07-23 15:15:52,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:52,433 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:52,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:15:52,433 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:52,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:52,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:52,434 INFO L87 Difference]: Start difference. First operand 967 states and 4282 transitions. Second operand 8 states. [2018-07-23 15:15:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,601 INFO L93 Difference]: Finished difference Result 1390 states and 5887 transitions. [2018-07-23 15:15:53,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:53,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:15:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,605 INFO L225 Difference]: With dead ends: 1390 [2018-07-23 15:15:53,605 INFO L226 Difference]: Without dead ends: 1384 [2018-07-23 15:15:53,605 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2018-07-23 15:15:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1003. [2018-07-23 15:15:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2018-07-23 15:15:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 4463 transitions. [2018-07-23 15:15:54,234 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 4463 transitions. Word has length 7 [2018-07-23 15:15:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:54,234 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 4463 transitions. [2018-07-23 15:15:54,235 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 4463 transitions. [2018-07-23 15:15:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:54,236 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:54,236 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:54,236 INFO L414 AbstractCegarLoop]: === Iteration 45 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1202914048, now seen corresponding path program 1 times [2018-07-23 15:15:54,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:54,243 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:54,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:15:54,243 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:54,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:54,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:54,244 INFO L87 Difference]: Start difference. First operand 1003 states and 4463 transitions. Second operand 8 states. [2018-07-23 15:15:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:55,425 INFO L93 Difference]: Finished difference Result 1366 states and 5794 transitions. [2018-07-23 15:15:55,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:55,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:15:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:55,428 INFO L225 Difference]: With dead ends: 1366 [2018-07-23 15:15:55,428 INFO L226 Difference]: Without dead ends: 1360 [2018-07-23 15:15:55,429 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:15:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2018-07-23 15:15:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 999. [2018-07-23 15:15:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2018-07-23 15:15:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 4445 transitions. [2018-07-23 15:15:56,060 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 4445 transitions. Word has length 7 [2018-07-23 15:15:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:56,061 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 4445 transitions. [2018-07-23 15:15:56,061 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 4445 transitions. [2018-07-23 15:15:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:56,061 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:56,062 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:56,062 INFO L414 AbstractCegarLoop]: === Iteration 46 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:56,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1214607121, now seen corresponding path program 1 times [2018-07-23 15:15:56,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:56,074 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:56,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:15:56,075 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:56,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:56,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:56,075 INFO L87 Difference]: Start difference. First operand 999 states and 4445 transitions. Second operand 8 states. [2018-07-23 15:15:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:57,643 INFO L93 Difference]: Finished difference Result 1768 states and 7537 transitions. [2018-07-23 15:15:57,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:15:57,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:15:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:57,647 INFO L225 Difference]: With dead ends: 1768 [2018-07-23 15:15:57,648 INFO L226 Difference]: Without dead ends: 1762 [2018-07-23 15:15:57,648 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2018-07-23 15:15:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1256. [2018-07-23 15:15:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2018-07-23 15:15:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 5599 transitions. [2018-07-23 15:15:58,608 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 5599 transitions. Word has length 7 [2018-07-23 15:15:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:58,609 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 5599 transitions. [2018-07-23 15:15:58,609 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 5599 transitions. [2018-07-23 15:15:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:58,610 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:58,610 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:58,610 INFO L414 AbstractCegarLoop]: === Iteration 47 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:58,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1214607496, now seen corresponding path program 1 times [2018-07-23 15:15:58,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:58,619 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:58,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:15:58,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:58,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:58,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:58,620 INFO L87 Difference]: Start difference. First operand 1256 states and 5599 transitions. Second operand 8 states. [2018-07-23 15:15:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:59,980 INFO L93 Difference]: Finished difference Result 1496 states and 6401 transitions. [2018-07-23 15:15:59,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:59,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:15:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:59,984 INFO L225 Difference]: With dead ends: 1496 [2018-07-23 15:15:59,984 INFO L226 Difference]: Without dead ends: 1490 [2018-07-23 15:15:59,985 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2018-07-23 15:16:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1223. [2018-07-23 15:16:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1223 states. [2018-07-23 15:16:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 5442 transitions. [2018-07-23 15:16:00,842 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 5442 transitions. Word has length 7 [2018-07-23 15:16:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:00,843 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 5442 transitions. [2018-07-23 15:16:00,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 5442 transitions. [2018-07-23 15:16:00,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:00,844 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:00,844 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:00,844 INFO L414 AbstractCegarLoop]: === Iteration 48 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash 793237902, now seen corresponding path program 1 times [2018-07-23 15:16:00,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:00,853 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:00,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:00,854 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:00,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:00,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:00,854 INFO L87 Difference]: Start difference. First operand 1223 states and 5442 transitions. Second operand 8 states. [2018-07-23 15:16:02,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:02,409 INFO L93 Difference]: Finished difference Result 2213 states and 9644 transitions. [2018-07-23 15:16:02,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:16:02,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:02,413 INFO L225 Difference]: With dead ends: 2213 [2018-07-23 15:16:02,414 INFO L226 Difference]: Without dead ends: 1796 [2018-07-23 15:16:02,415 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2018-07-23 15:16:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1481. [2018-07-23 15:16:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2018-07-23 15:16:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 6626 transitions. [2018-07-23 15:16:03,691 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 6626 transitions. Word has length 7 [2018-07-23 15:16:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:03,691 INFO L471 AbstractCegarLoop]: Abstraction has 1481 states and 6626 transitions. [2018-07-23 15:16:03,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 6626 transitions. [2018-07-23 15:16:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:03,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:03,692 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:03,692 INFO L414 AbstractCegarLoop]: === Iteration 49 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash 792036652, now seen corresponding path program 1 times [2018-07-23 15:16:03,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:03,701 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:03,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:03,701 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:03,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:03,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:03,702 INFO L87 Difference]: Start difference. First operand 1481 states and 6626 transitions. Second operand 8 states. [2018-07-23 15:16:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:05,609 INFO L93 Difference]: Finished difference Result 2153 states and 9326 transitions. [2018-07-23 15:16:05,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:16:05,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:05,614 INFO L225 Difference]: With dead ends: 2153 [2018-07-23 15:16:05,614 INFO L226 Difference]: Without dead ends: 2147 [2018-07-23 15:16:05,615 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:16:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2018-07-23 15:16:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1488. [2018-07-23 15:16:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-07-23 15:16:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 6663 transitions. [2018-07-23 15:16:06,841 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 6663 transitions. Word has length 7 [2018-07-23 15:16:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:06,841 INFO L471 AbstractCegarLoop]: Abstraction has 1488 states and 6663 transitions. [2018-07-23 15:16:06,842 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 6663 transitions. [2018-07-23 15:16:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:06,843 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:06,843 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:06,843 INFO L414 AbstractCegarLoop]: === Iteration 50 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:06,843 INFO L82 PathProgramCache]: Analyzing trace with hash 792036655, now seen corresponding path program 1 times [2018-07-23 15:16:06,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:06,855 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:06,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:06,856 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:06,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:06,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:06,856 INFO L87 Difference]: Start difference. First operand 1488 states and 6663 transitions. Second operand 8 states. [2018-07-23 15:16:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:08,835 INFO L93 Difference]: Finished difference Result 2162 states and 9262 transitions. [2018-07-23 15:16:08,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:16:08,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:08,840 INFO L225 Difference]: With dead ends: 2162 [2018-07-23 15:16:08,840 INFO L226 Difference]: Without dead ends: 2156 [2018-07-23 15:16:08,841 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:16:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2018-07-23 15:16:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1443. [2018-07-23 15:16:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2018-07-23 15:16:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 6444 transitions. [2018-07-23 15:16:09,925 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 6444 transitions. Word has length 7 [2018-07-23 15:16:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:09,925 INFO L471 AbstractCegarLoop]: Abstraction has 1443 states and 6444 transitions. [2018-07-23 15:16:09,925 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 6444 transitions. [2018-07-23 15:16:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:09,926 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:09,926 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:09,926 INFO L414 AbstractCegarLoop]: === Iteration 51 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:09,927 INFO L82 PathProgramCache]: Analyzing trace with hash 792053144, now seen corresponding path program 1 times [2018-07-23 15:16:09,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:09,938 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:09,938 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:09,938 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:09,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:09,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:09,939 INFO L87 Difference]: Start difference. First operand 1443 states and 6444 transitions. Second operand 8 states. [2018-07-23 15:16:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:11,629 INFO L93 Difference]: Finished difference Result 1843 states and 7952 transitions. [2018-07-23 15:16:11,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:16:11,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:11,634 INFO L225 Difference]: With dead ends: 1843 [2018-07-23 15:16:11,634 INFO L226 Difference]: Without dead ends: 1837 [2018-07-23 15:16:11,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2018-07-23 15:16:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1429. [2018-07-23 15:16:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2018-07-23 15:16:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 6363 transitions. [2018-07-23 15:16:12,770 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 6363 transitions. Word has length 7 [2018-07-23 15:16:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:12,770 INFO L471 AbstractCegarLoop]: Abstraction has 1429 states and 6363 transitions. [2018-07-23 15:16:12,770 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 6363 transitions. [2018-07-23 15:16:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:12,771 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:12,771 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:12,772 INFO L414 AbstractCegarLoop]: === Iteration 52 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:12,772 INFO L82 PathProgramCache]: Analyzing trace with hash 792053147, now seen corresponding path program 1 times [2018-07-23 15:16:12,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:12,783 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:12,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:12,784 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:12,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:12,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:12,784 INFO L87 Difference]: Start difference. First operand 1429 states and 6363 transitions. Second operand 8 states. [2018-07-23 15:16:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:14,775 INFO L93 Difference]: Finished difference Result 2019 states and 8655 transitions. [2018-07-23 15:16:14,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:16:14,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:14,781 INFO L225 Difference]: With dead ends: 2019 [2018-07-23 15:16:14,781 INFO L226 Difference]: Without dead ends: 2017 [2018-07-23 15:16:14,782 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2018-07-23 15:16:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1340. [2018-07-23 15:16:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2018-07-23 15:16:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 5902 transitions. [2018-07-23 15:16:15,863 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 5902 transitions. Word has length 7 [2018-07-23 15:16:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:15,863 INFO L471 AbstractCegarLoop]: Abstraction has 1340 states and 5902 transitions. [2018-07-23 15:16:15,863 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 5902 transitions. [2018-07-23 15:16:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:15,864 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:15,864 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:15,864 INFO L414 AbstractCegarLoop]: === Iteration 53 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:15,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1257828547, now seen corresponding path program 1 times [2018-07-23 15:16:15,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:15,877 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:15,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:15,878 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:15,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:15,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:15,878 INFO L87 Difference]: Start difference. First operand 1340 states and 5902 transitions. Second operand 8 states. [2018-07-23 15:16:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:17,440 INFO L93 Difference]: Finished difference Result 1696 states and 7339 transitions. [2018-07-23 15:16:17,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:16:17,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:17,445 INFO L225 Difference]: With dead ends: 1696 [2018-07-23 15:16:17,445 INFO L226 Difference]: Without dead ends: 1690 [2018-07-23 15:16:17,446 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:16:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2018-07-23 15:16:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1381. [2018-07-23 15:16:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1381 states. [2018-07-23 15:16:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 6065 transitions. [2018-07-23 15:16:18,642 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 6065 transitions. Word has length 7 [2018-07-23 15:16:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:18,643 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 6065 transitions. [2018-07-23 15:16:18,643 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 6065 transitions. [2018-07-23 15:16:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:18,644 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:18,644 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:18,644 INFO L414 AbstractCegarLoop]: === Iteration 54 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1257828550, now seen corresponding path program 1 times [2018-07-23 15:16:18,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:18,652 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:18,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:18,652 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:18,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:18,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:18,653 INFO L87 Difference]: Start difference. First operand 1381 states and 6065 transitions. Second operand 8 states. [2018-07-23 15:16:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:20,517 INFO L93 Difference]: Finished difference Result 1975 states and 8515 transitions. [2018-07-23 15:16:20,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:16:20,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:20,521 INFO L225 Difference]: With dead ends: 1975 [2018-07-23 15:16:20,522 INFO L226 Difference]: Without dead ends: 1969 [2018-07-23 15:16:20,522 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:16:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2018-07-23 15:16:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1426. [2018-07-23 15:16:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2018-07-23 15:16:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 6294 transitions. [2018-07-23 15:16:21,716 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 6294 transitions. Word has length 7 [2018-07-23 15:16:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:21,717 INFO L471 AbstractCegarLoop]: Abstraction has 1426 states and 6294 transitions. [2018-07-23 15:16:21,717 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 6294 transitions. [2018-07-23 15:16:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:21,718 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:21,718 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:21,718 INFO L414 AbstractCegarLoop]: === Iteration 55 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1270465246, now seen corresponding path program 1 times [2018-07-23 15:16:21,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:21,727 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:21,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:21,727 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:21,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:21,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:21,728 INFO L87 Difference]: Start difference. First operand 1426 states and 6294 transitions. Second operand 8 states. [2018-07-23 15:16:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:23,529 INFO L93 Difference]: Finished difference Result 1872 states and 7908 transitions. [2018-07-23 15:16:23,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:16:23,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:23,533 INFO L225 Difference]: With dead ends: 1872 [2018-07-23 15:16:23,533 INFO L226 Difference]: Without dead ends: 1866 [2018-07-23 15:16:23,534 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:16:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2018-07-23 15:16:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1149. [2018-07-23 15:16:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2018-07-23 15:16:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 5015 transitions. [2018-07-23 15:16:24,550 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 5015 transitions. Word has length 7 [2018-07-23 15:16:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:24,551 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 5015 transitions. [2018-07-23 15:16:24,551 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 5015 transitions. [2018-07-23 15:16:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:24,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:24,551 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:24,552 INFO L414 AbstractCegarLoop]: === Iteration 56 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1270465621, now seen corresponding path program 1 times [2018-07-23 15:16:24,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:24,563 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:24,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:24,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:24,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:24,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:24,564 INFO L87 Difference]: Start difference. First operand 1149 states and 5015 transitions. Second operand 8 states. [2018-07-23 15:16:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:26,178 INFO L93 Difference]: Finished difference Result 1574 states and 6645 transitions. [2018-07-23 15:16:26,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:16:26,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:26,181 INFO L225 Difference]: With dead ends: 1574 [2018-07-23 15:16:26,182 INFO L226 Difference]: Without dead ends: 1568 [2018-07-23 15:16:26,182 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:16:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2018-07-23 15:16:27,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1048. [2018-07-23 15:16:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2018-07-23 15:16:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 4552 transitions. [2018-07-23 15:16:27,150 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 4552 transitions. Word has length 7 [2018-07-23 15:16:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:27,151 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 4552 transitions. [2018-07-23 15:16:27,151 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 4552 transitions. [2018-07-23 15:16:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:27,152 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:27,152 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:27,152 INFO L414 AbstractCegarLoop]: === Iteration 57 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:27,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1717460035, now seen corresponding path program 1 times [2018-07-23 15:16:27,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:27,164 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:27,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:27,164 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:27,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:27,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:27,165 INFO L87 Difference]: Start difference. First operand 1048 states and 4552 transitions. Second operand 8 states. [2018-07-23 15:16:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:28,799 INFO L93 Difference]: Finished difference Result 1637 states and 6901 transitions. [2018-07-23 15:16:28,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:16:28,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:28,803 INFO L225 Difference]: With dead ends: 1637 [2018-07-23 15:16:28,803 INFO L226 Difference]: Without dead ends: 1631 [2018-07-23 15:16:28,803 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:16:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2018-07-23 15:16:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1078. [2018-07-23 15:16:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1078 states. [2018-07-23 15:16:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 4672 transitions. [2018-07-23 15:16:29,864 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 4672 transitions. Word has length 7 [2018-07-23 15:16:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:29,864 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 4672 transitions. [2018-07-23 15:16:29,864 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 4672 transitions. [2018-07-23 15:16:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:29,865 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:29,865 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:29,865 INFO L414 AbstractCegarLoop]: === Iteration 58 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:29,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1717459924, now seen corresponding path program 1 times [2018-07-23 15:16:29,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:29,876 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:29,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:29,876 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:29,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:29,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:29,876 INFO L87 Difference]: Start difference. First operand 1078 states and 4672 transitions. Second operand 8 states. [2018-07-23 15:16:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:31,740 INFO L93 Difference]: Finished difference Result 1711 states and 7234 transitions. [2018-07-23 15:16:31,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:16:31,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:31,745 INFO L225 Difference]: With dead ends: 1711 [2018-07-23 15:16:31,745 INFO L226 Difference]: Without dead ends: 1705 [2018-07-23 15:16:31,746 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2018-07-23 15:16:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1164. [2018-07-23 15:16:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2018-07-23 15:16:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 5077 transitions. [2018-07-23 15:16:32,869 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 5077 transitions. Word has length 7 [2018-07-23 15:16:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:32,869 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 5077 transitions. [2018-07-23 15:16:32,869 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 5077 transitions. [2018-07-23 15:16:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:32,870 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:32,870 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:32,870 INFO L414 AbstractCegarLoop]: === Iteration 59 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1702174900, now seen corresponding path program 1 times [2018-07-23 15:16:32,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:32,880 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:32,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:32,880 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:32,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:32,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:32,880 INFO L87 Difference]: Start difference. First operand 1164 states and 5077 transitions. Second operand 8 states. [2018-07-23 15:16:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:34,876 INFO L93 Difference]: Finished difference Result 1830 states and 7707 transitions. [2018-07-23 15:16:34,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:16:34,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:34,880 INFO L225 Difference]: With dead ends: 1830 [2018-07-23 15:16:34,880 INFO L226 Difference]: Without dead ends: 1824 [2018-07-23 15:16:34,880 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:16:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2018-07-23 15:16:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1202. [2018-07-23 15:16:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2018-07-23 15:16:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 5236 transitions. [2018-07-23 15:16:36,000 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 5236 transitions. Word has length 7 [2018-07-23 15:16:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:36,000 INFO L471 AbstractCegarLoop]: Abstraction has 1202 states and 5236 transitions. [2018-07-23 15:16:36,000 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 5236 transitions. [2018-07-23 15:16:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:36,001 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:36,001 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:36,001 INFO L414 AbstractCegarLoop]: === Iteration 60 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1702174525, now seen corresponding path program 1 times [2018-07-23 15:16:36,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:36,012 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:36,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:36,012 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:36,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:36,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:36,013 INFO L87 Difference]: Start difference. First operand 1202 states and 5236 transitions. Second operand 8 states. [2018-07-23 15:16:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:38,289 INFO L93 Difference]: Finished difference Result 1937 states and 8213 transitions. [2018-07-23 15:16:38,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:16:38,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:38,293 INFO L225 Difference]: With dead ends: 1937 [2018-07-23 15:16:38,294 INFO L226 Difference]: Without dead ends: 1931 [2018-07-23 15:16:38,294 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2018-07-23 15:16:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1246. [2018-07-23 15:16:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2018-07-23 15:16:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 5494 transitions. [2018-07-23 15:16:39,551 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 5494 transitions. Word has length 7 [2018-07-23 15:16:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:39,552 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 5494 transitions. [2018-07-23 15:16:39,552 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 5494 transitions. [2018-07-23 15:16:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:39,553 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:39,553 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:39,553 INFO L414 AbstractCegarLoop]: === Iteration 61 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:39,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1730089067, now seen corresponding path program 1 times [2018-07-23 15:16:39,553 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:39,563 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:39,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:39,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:39,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:39,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:39,564 INFO L87 Difference]: Start difference. First operand 1246 states and 5494 transitions. Second operand 8 states. [2018-07-23 15:16:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:42,090 INFO L93 Difference]: Finished difference Result 1976 states and 8257 transitions. [2018-07-23 15:16:42,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:16:42,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:42,095 INFO L225 Difference]: With dead ends: 1976 [2018-07-23 15:16:42,095 INFO L226 Difference]: Without dead ends: 1970 [2018-07-23 15:16:42,095 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:16:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2018-07-23 15:16:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1261. [2018-07-23 15:16:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2018-07-23 15:16:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 5559 transitions. [2018-07-23 15:16:43,398 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 5559 transitions. Word has length 7 [2018-07-23 15:16:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:43,398 INFO L471 AbstractCegarLoop]: Abstraction has 1261 states and 5559 transitions. [2018-07-23 15:16:43,398 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 5559 transitions. [2018-07-23 15:16:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:43,399 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:43,399 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:43,399 INFO L414 AbstractCegarLoop]: === Iteration 62 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1730088692, now seen corresponding path program 1 times [2018-07-23 15:16:43,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:43,409 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:43,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:43,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:43,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:43,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:43,410 INFO L87 Difference]: Start difference. First operand 1261 states and 5559 transitions. Second operand 8 states. [2018-07-23 15:16:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:45,826 INFO L93 Difference]: Finished difference Result 1653 states and 7019 transitions. [2018-07-23 15:16:45,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:16:45,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:45,830 INFO L225 Difference]: With dead ends: 1653 [2018-07-23 15:16:45,830 INFO L226 Difference]: Without dead ends: 1647 [2018-07-23 15:16:45,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2018-07-23 15:16:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1304. [2018-07-23 15:16:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2018-07-23 15:16:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5730 transitions. [2018-07-23 15:16:47,245 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5730 transitions. Word has length 7 [2018-07-23 15:16:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:47,245 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 5730 transitions. [2018-07-23 15:16:47,245 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5730 transitions. [2018-07-23 15:16:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:47,246 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:47,246 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:47,247 INFO L414 AbstractCegarLoop]: === Iteration 63 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:47,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1734682647, now seen corresponding path program 1 times [2018-07-23 15:16:47,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:47,260 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:47,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:47,260 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:47,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:47,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:47,261 INFO L87 Difference]: Start difference. First operand 1304 states and 5730 transitions. Second operand 8 states. [2018-07-23 15:16:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:50,164 INFO L93 Difference]: Finished difference Result 2160 states and 9043 transitions. [2018-07-23 15:16:50,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:16:50,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:50,169 INFO L225 Difference]: With dead ends: 2160 [2018-07-23 15:16:50,169 INFO L226 Difference]: Without dead ends: 2158 [2018-07-23 15:16:50,170 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:16:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2018-07-23 15:16:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1316. [2018-07-23 15:16:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2018-07-23 15:16:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5790 transitions. [2018-07-23 15:16:51,569 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5790 transitions. Word has length 7 [2018-07-23 15:16:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:51,569 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 5790 transitions. [2018-07-23 15:16:51,569 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5790 transitions. [2018-07-23 15:16:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:51,570 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:51,570 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:51,571 INFO L414 AbstractCegarLoop]: === Iteration 64 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:51,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1734682272, now seen corresponding path program 1 times [2018-07-23 15:16:51,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:51,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:51,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:51,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:51,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:51,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:51,592 INFO L87 Difference]: Start difference. First operand 1316 states and 5790 transitions. Second operand 8 states. [2018-07-23 15:16:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:54,839 INFO L93 Difference]: Finished difference Result 2095 states and 8823 transitions. [2018-07-23 15:16:54,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:16:54,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:54,845 INFO L225 Difference]: With dead ends: 2095 [2018-07-23 15:16:54,845 INFO L226 Difference]: Without dead ends: 2089 [2018-07-23 15:16:54,846 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:16:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2018-07-23 15:16:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1271. [2018-07-23 15:16:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2018-07-23 15:16:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 5596 transitions. [2018-07-23 15:16:56,257 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 5596 transitions. Word has length 7 [2018-07-23 15:16:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:56,257 INFO L471 AbstractCegarLoop]: Abstraction has 1271 states and 5596 transitions. [2018-07-23 15:16:56,257 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 5596 transitions. [2018-07-23 15:16:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:16:56,259 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:56,259 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:56,259 INFO L414 AbstractCegarLoop]: === Iteration 65 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1734690986, now seen corresponding path program 1 times [2018-07-23 15:16:56,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:56,272 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:56,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:16:56,273 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:56,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:56,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:56,273 INFO L87 Difference]: Start difference. First operand 1271 states and 5596 transitions. Second operand 8 states. [2018-07-23 15:16:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:59,402 INFO L93 Difference]: Finished difference Result 2123 states and 8958 transitions. [2018-07-23 15:16:59,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:16:59,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:16:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:59,406 INFO L225 Difference]: With dead ends: 2123 [2018-07-23 15:16:59,406 INFO L226 Difference]: Without dead ends: 2117 [2018-07-23 15:16:59,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:16:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2018-07-23 15:17:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1269. [2018-07-23 15:17:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2018-07-23 15:17:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 5581 transitions. [2018-07-23 15:17:00,840 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 5581 transitions. Word has length 7 [2018-07-23 15:17:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:00,841 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 5581 transitions. [2018-07-23 15:17:00,841 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 5581 transitions. [2018-07-23 15:17:00,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:00,842 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:00,842 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:00,842 INFO L414 AbstractCegarLoop]: === Iteration 66 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:00,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1734690611, now seen corresponding path program 1 times [2018-07-23 15:17:00,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:00,859 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:00,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:00,859 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:00,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:00,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:00,860 INFO L87 Difference]: Start difference. First operand 1269 states and 5581 transitions. Second operand 8 states. [2018-07-23 15:17:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:04,074 INFO L93 Difference]: Finished difference Result 2108 states and 8913 transitions. [2018-07-23 15:17:04,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:17:04,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:04,079 INFO L225 Difference]: With dead ends: 2108 [2018-07-23 15:17:04,079 INFO L226 Difference]: Without dead ends: 2106 [2018-07-23 15:17:04,080 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:17:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2018-07-23 15:17:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1224. [2018-07-23 15:17:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2018-07-23 15:17:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 5364 transitions. [2018-07-23 15:17:05,561 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 5364 transitions. Word has length 7 [2018-07-23 15:17:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:05,562 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 5364 transitions. [2018-07-23 15:17:05,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 5364 transitions. [2018-07-23 15:17:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:05,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:05,562 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:05,563 INFO L414 AbstractCegarLoop]: === Iteration 67 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1732772609, now seen corresponding path program 1 times [2018-07-23 15:17:05,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:05,572 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:05,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:05,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:05,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:05,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:05,573 INFO L87 Difference]: Start difference. First operand 1224 states and 5364 transitions. Second operand 8 states. [2018-07-23 15:17:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:08,070 INFO L93 Difference]: Finished difference Result 1823 states and 7639 transitions. [2018-07-23 15:17:08,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:17:08,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:08,074 INFO L225 Difference]: With dead ends: 1823 [2018-07-23 15:17:08,074 INFO L226 Difference]: Without dead ends: 1817 [2018-07-23 15:17:08,075 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:17:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2018-07-23 15:17:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1235. [2018-07-23 15:17:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2018-07-23 15:17:09,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 5415 transitions. [2018-07-23 15:17:09,534 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 5415 transitions. Word has length 7 [2018-07-23 15:17:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:09,534 INFO L471 AbstractCegarLoop]: Abstraction has 1235 states and 5415 transitions. [2018-07-23 15:17:09,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 5415 transitions. [2018-07-23 15:17:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:09,535 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:09,535 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:09,535 INFO L414 AbstractCegarLoop]: === Iteration 68 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1732772498, now seen corresponding path program 1 times [2018-07-23 15:17:09,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:09,546 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:09,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:09,547 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:09,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:09,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:09,547 INFO L87 Difference]: Start difference. First operand 1235 states and 5415 transitions. Second operand 8 states. [2018-07-23 15:17:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:11,560 INFO L93 Difference]: Finished difference Result 1502 states and 6388 transitions. [2018-07-23 15:17:11,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:17:11,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:11,564 INFO L225 Difference]: With dead ends: 1502 [2018-07-23 15:17:11,564 INFO L226 Difference]: Without dead ends: 1496 [2018-07-23 15:17:11,565 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:17:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2018-07-23 15:17:12,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1178. [2018-07-23 15:17:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2018-07-23 15:17:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 5168 transitions. [2018-07-23 15:17:12,992 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 5168 transitions. Word has length 7 [2018-07-23 15:17:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:12,992 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 5168 transitions. [2018-07-23 15:17:12,992 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 5168 transitions. [2018-07-23 15:17:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:12,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:12,993 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:12,993 INFO L414 AbstractCegarLoop]: === Iteration 69 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1733847968, now seen corresponding path program 1 times [2018-07-23 15:17:12,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:13,008 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:13,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:13,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:13,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:13,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:13,009 INFO L87 Difference]: Start difference. First operand 1178 states and 5168 transitions. Second operand 8 states. [2018-07-23 15:17:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:15,630 INFO L93 Difference]: Finished difference Result 1776 states and 7441 transitions. [2018-07-23 15:17:15,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:17:15,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:15,635 INFO L225 Difference]: With dead ends: 1776 [2018-07-23 15:17:15,635 INFO L226 Difference]: Without dead ends: 1774 [2018-07-23 15:17:15,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:17:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2018-07-23 15:17:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1180. [2018-07-23 15:17:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2018-07-23 15:17:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 5177 transitions. [2018-07-23 15:17:17,103 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 5177 transitions. Word has length 7 [2018-07-23 15:17:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:17,103 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 5177 transitions. [2018-07-23 15:17:17,103 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 5177 transitions. [2018-07-23 15:17:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:17,104 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:17,104 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:17,105 INFO L414 AbstractCegarLoop]: === Iteration 70 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1733847857, now seen corresponding path program 1 times [2018-07-23 15:17:17,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:17,120 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:17,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:17,121 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:17,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:17,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:17,121 INFO L87 Difference]: Start difference. First operand 1180 states and 5177 transitions. Second operand 8 states. [2018-07-23 15:17:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:19,751 INFO L93 Difference]: Finished difference Result 1732 states and 7266 transitions. [2018-07-23 15:17:19,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:17:19,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:19,755 INFO L225 Difference]: With dead ends: 1732 [2018-07-23 15:17:19,755 INFO L226 Difference]: Without dead ends: 1726 [2018-07-23 15:17:19,756 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:17:19,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2018-07-23 15:17:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1131. [2018-07-23 15:17:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2018-07-23 15:17:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 4945 transitions. [2018-07-23 15:17:21,214 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 4945 transitions. Word has length 7 [2018-07-23 15:17:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:21,215 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 4945 transitions. [2018-07-23 15:17:21,215 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 4945 transitions. [2018-07-23 15:17:21,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:21,215 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:21,216 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:21,216 INFO L414 AbstractCegarLoop]: === Iteration 71 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:21,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1733840001, now seen corresponding path program 1 times [2018-07-23 15:17:21,216 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:21,231 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:21,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:21,232 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:21,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:21,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:21,232 INFO L87 Difference]: Start difference. First operand 1131 states and 4945 transitions. Second operand 8 states. [2018-07-23 15:17:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:23,794 INFO L93 Difference]: Finished difference Result 1664 states and 7053 transitions. [2018-07-23 15:17:23,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:17:23,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:23,799 INFO L225 Difference]: With dead ends: 1664 [2018-07-23 15:17:23,799 INFO L226 Difference]: Without dead ends: 1658 [2018-07-23 15:17:23,799 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:17:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2018-07-23 15:17:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1106. [2018-07-23 15:17:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2018-07-23 15:17:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 4824 transitions. [2018-07-23 15:17:25,202 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 4824 transitions. Word has length 7 [2018-07-23 15:17:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:25,202 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 4824 transitions. [2018-07-23 15:17:25,202 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 4824 transitions. [2018-07-23 15:17:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:17:25,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:25,203 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:25,203 INFO L414 AbstractCegarLoop]: === Iteration 72 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:25,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1733839890, now seen corresponding path program 1 times [2018-07-23 15:17:25,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:25,220 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:25,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 15:17:25,221 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:25,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:25,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:25,221 INFO L87 Difference]: Start difference. First operand 1106 states and 4824 transitions. Second operand 8 states. [2018-07-23 15:17:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:27,911 INFO L93 Difference]: Finished difference Result 1634 states and 6909 transitions. [2018-07-23 15:17:27,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:17:27,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-23 15:17:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:27,915 INFO L225 Difference]: With dead ends: 1634 [2018-07-23 15:17:27,915 INFO L226 Difference]: Without dead ends: 1632 [2018-07-23 15:17:27,916 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:17:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2018-07-23 15:17:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1057. [2018-07-23 15:17:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2018-07-23 15:17:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4579 transitions. [2018-07-23 15:17:29,370 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4579 transitions. Word has length 7 [2018-07-23 15:17:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:29,370 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 4579 transitions. [2018-07-23 15:17:29,370 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4579 transitions. [2018-07-23 15:17:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:17:29,371 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:29,371 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:29,371 INFO L414 AbstractCegarLoop]: === Iteration 73 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:29,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1364097022, now seen corresponding path program 1 times [2018-07-23 15:17:29,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:29,385 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:29,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:17:29,386 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:29,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:29,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:29,386 INFO L87 Difference]: Start difference. First operand 1057 states and 4579 transitions. Second operand 8 states. [2018-07-23 15:17:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:33,041 INFO L93 Difference]: Finished difference Result 2222 states and 9079 transitions. [2018-07-23 15:17:33,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:17:33,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:17:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:33,047 INFO L225 Difference]: With dead ends: 2222 [2018-07-23 15:17:33,047 INFO L226 Difference]: Without dead ends: 2213 [2018-07-23 15:17:33,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:17:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2018-07-23 15:17:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1300. [2018-07-23 15:17:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2018-07-23 15:17:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 5828 transitions. [2018-07-23 15:17:34,895 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 5828 transitions. Word has length 8 [2018-07-23 15:17:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:34,895 INFO L471 AbstractCegarLoop]: Abstraction has 1300 states and 5828 transitions. [2018-07-23 15:17:34,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 5828 transitions. [2018-07-23 15:17:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:17:34,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:34,896 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:34,896 INFO L414 AbstractCegarLoop]: === Iteration 74 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1364097019, now seen corresponding path program 1 times [2018-07-23 15:17:34,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:34,904 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:34,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:17:34,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:34,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:34,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:34,905 INFO L87 Difference]: Start difference. First operand 1300 states and 5828 transitions. Second operand 8 states. [2018-07-23 15:17:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:38,418 INFO L93 Difference]: Finished difference Result 2213 states and 9051 transitions. [2018-07-23 15:17:38,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:17:38,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:17:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:38,424 INFO L225 Difference]: With dead ends: 2213 [2018-07-23 15:17:38,424 INFO L226 Difference]: Without dead ends: 2195 [2018-07-23 15:17:38,425 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:17:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2018-07-23 15:17:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1364. [2018-07-23 15:17:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2018-07-23 15:17:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 6110 transitions. [2018-07-23 15:17:40,361 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 6110 transitions. Word has length 8 [2018-07-23 15:17:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:40,361 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 6110 transitions. [2018-07-23 15:17:40,361 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 6110 transitions. [2018-07-23 15:17:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:17:40,362 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:40,362 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:40,362 INFO L414 AbstractCegarLoop]: === Iteration 75 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:40,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1364109267, now seen corresponding path program 1 times [2018-07-23 15:17:40,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:40,372 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:40,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:17:40,372 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:40,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:40,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:40,373 INFO L87 Difference]: Start difference. First operand 1364 states and 6110 transitions. Second operand 8 states. [2018-07-23 15:17:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:45,281 INFO L93 Difference]: Finished difference Result 2981 states and 11952 transitions. [2018-07-23 15:17:45,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:17:45,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:17:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:45,288 INFO L225 Difference]: With dead ends: 2981 [2018-07-23 15:17:45,288 INFO L226 Difference]: Without dead ends: 2972 [2018-07-23 15:17:45,289 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:17:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2018-07-23 15:17:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1377. [2018-07-23 15:17:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2018-07-23 15:17:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 6173 transitions. [2018-07-23 15:17:47,287 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 6173 transitions. Word has length 8 [2018-07-23 15:17:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:47,287 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 6173 transitions. [2018-07-23 15:17:47,288 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 6173 transitions. [2018-07-23 15:17:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:17:47,289 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:47,289 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:47,289 INFO L414 AbstractCegarLoop]: === Iteration 76 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1364109264, now seen corresponding path program 1 times [2018-07-23 15:17:47,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:47,297 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:47,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:17:47,297 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:47,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:47,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:47,297 INFO L87 Difference]: Start difference. First operand 1377 states and 6173 transitions. Second operand 8 states. [2018-07-23 15:17:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:51,339 INFO L93 Difference]: Finished difference Result 2347 states and 9582 transitions. [2018-07-23 15:17:51,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:17:51,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:17:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:51,345 INFO L225 Difference]: With dead ends: 2347 [2018-07-23 15:17:51,345 INFO L226 Difference]: Without dead ends: 2338 [2018-07-23 15:17:51,346 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:17:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2018-07-23 15:17:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1383. [2018-07-23 15:17:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2018-07-23 15:17:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 6201 transitions. [2018-07-23 15:17:53,384 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 6201 transitions. Word has length 8 [2018-07-23 15:17:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:53,384 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 6201 transitions. [2018-07-23 15:17:53,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:17:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 6201 transitions. [2018-07-23 15:17:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:17:53,385 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:53,385 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:53,385 INFO L414 AbstractCegarLoop]: === Iteration 77 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1364109261, now seen corresponding path program 1 times [2018-07-23 15:17:53,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:53,398 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:17:53,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:17:53,398 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:17:53,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:17:53,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:17:53,399 INFO L87 Difference]: Start difference. First operand 1383 states and 6201 transitions. Second operand 8 states. [2018-07-23 15:17:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:59,077 INFO L93 Difference]: Finished difference Result 3180 states and 12832 transitions. [2018-07-23 15:17:59,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:17:59,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:17:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:59,085 INFO L225 Difference]: With dead ends: 3180 [2018-07-23 15:17:59,085 INFO L226 Difference]: Without dead ends: 3171 [2018-07-23 15:17:59,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:17:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2018-07-23 15:18:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 1448. [2018-07-23 15:18:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2018-07-23 15:18:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 6499 transitions. [2018-07-23 15:18:01,248 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 6499 transitions. Word has length 8 [2018-07-23 15:18:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:01,248 INFO L471 AbstractCegarLoop]: Abstraction has 1448 states and 6499 transitions. [2018-07-23 15:18:01,248 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 6499 transitions. [2018-07-23 15:18:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:01,250 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:01,250 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:01,250 INFO L414 AbstractCegarLoop]: === Iteration 78 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1364367776, now seen corresponding path program 1 times [2018-07-23 15:18:01,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:01,264 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:01,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:01,264 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:01,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:01,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:01,265 INFO L87 Difference]: Start difference. First operand 1448 states and 6499 transitions. Second operand 8 states. [2018-07-23 15:18:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:08,220 INFO L93 Difference]: Finished difference Result 3670 states and 14564 transitions. [2018-07-23 15:18:08,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:18:08,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:18:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:08,229 INFO L225 Difference]: With dead ends: 3670 [2018-07-23 15:18:08,229 INFO L226 Difference]: Without dead ends: 3661 [2018-07-23 15:18:08,230 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:18:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2018-07-23 15:18:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 1510. [2018-07-23 15:18:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2018-07-23 15:18:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 6824 transitions. [2018-07-23 15:18:10,547 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 6824 transitions. Word has length 8 [2018-07-23 15:18:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:10,547 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 6824 transitions. [2018-07-23 15:18:10,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 6824 transitions. [2018-07-23 15:18:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:10,548 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:10,548 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:10,548 INFO L414 AbstractCegarLoop]: === Iteration 79 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1364367773, now seen corresponding path program 1 times [2018-07-23 15:18:10,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:10,559 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:10,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:10,560 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:10,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:10,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:10,560 INFO L87 Difference]: Start difference. First operand 1510 states and 6824 transitions. Second operand 8 states. [2018-07-23 15:18:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:15,865 INFO L93 Difference]: Finished difference Result 2858 states and 11589 transitions. [2018-07-23 15:18:15,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:18:15,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:18:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:15,872 INFO L225 Difference]: With dead ends: 2858 [2018-07-23 15:18:15,872 INFO L226 Difference]: Without dead ends: 2849 [2018-07-23 15:18:15,873 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:18:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2018-07-23 15:18:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1513. [2018-07-23 15:18:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-07-23 15:18:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 6838 transitions. [2018-07-23 15:18:18,283 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 6838 transitions. Word has length 8 [2018-07-23 15:18:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:18,283 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 6838 transitions. [2018-07-23 15:18:18,283 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:18,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 6838 transitions. [2018-07-23 15:18:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:18,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:18,284 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:18,285 INFO L414 AbstractCegarLoop]: === Iteration 80 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1364367770, now seen corresponding path program 1 times [2018-07-23 15:18:18,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:18,292 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:18,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:18,292 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:18,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:18,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:18,293 INFO L87 Difference]: Start difference. First operand 1513 states and 6838 transitions. Second operand 8 states. [2018-07-23 15:18:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:25,328 INFO L93 Difference]: Finished difference Result 3732 states and 15122 transitions. [2018-07-23 15:18:25,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:18:25,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:18:25,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:25,337 INFO L225 Difference]: With dead ends: 3732 [2018-07-23 15:18:25,337 INFO L226 Difference]: Without dead ends: 3723 [2018-07-23 15:18:25,338 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:18:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2018-07-23 15:18:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 1617. [2018-07-23 15:18:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2018-07-23 15:18:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 7349 transitions. [2018-07-23 15:18:28,049 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 7349 transitions. Word has length 8 [2018-07-23 15:18:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:28,049 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 7349 transitions. [2018-07-23 15:18:28,049 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 7349 transitions. [2018-07-23 15:18:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:28,050 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:28,050 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:28,050 INFO L414 AbstractCegarLoop]: === Iteration 81 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1364360832, now seen corresponding path program 1 times [2018-07-23 15:18:28,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:28,060 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:28,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:28,060 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:28,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:28,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:28,061 INFO L87 Difference]: Start difference. First operand 1617 states and 7349 transitions. Second operand 8 states. [2018-07-23 15:18:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:34,103 INFO L93 Difference]: Finished difference Result 3049 states and 12401 transitions. [2018-07-23 15:18:34,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:18:34,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:18:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:34,110 INFO L225 Difference]: With dead ends: 3049 [2018-07-23 15:18:34,110 INFO L226 Difference]: Without dead ends: 3040 [2018-07-23 15:18:34,111 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:18:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2018-07-23 15:18:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1700. [2018-07-23 15:18:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1700 states. [2018-07-23 15:18:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 7749 transitions. [2018-07-23 15:18:36,949 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 7749 transitions. Word has length 8 [2018-07-23 15:18:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:36,949 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 7749 transitions. [2018-07-23 15:18:36,949 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 7749 transitions. [2018-07-23 15:18:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:36,950 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:36,950 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:36,950 INFO L414 AbstractCegarLoop]: === Iteration 82 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:36,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1364360829, now seen corresponding path program 1 times [2018-07-23 15:18:36,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:36,959 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:36,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:36,960 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:36,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:36,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:36,960 INFO L87 Difference]: Start difference. First operand 1700 states and 7749 transitions. Second operand 8 states. [2018-07-23 15:18:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:42,719 INFO L93 Difference]: Finished difference Result 2875 states and 11849 transitions. [2018-07-23 15:18:42,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:18:42,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:18:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:42,726 INFO L225 Difference]: With dead ends: 2875 [2018-07-23 15:18:42,726 INFO L226 Difference]: Without dead ends: 2866 [2018-07-23 15:18:42,727 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:18:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2018-07-23 15:18:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1712. [2018-07-23 15:18:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2018-07-23 15:18:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 7791 transitions. [2018-07-23 15:18:45,594 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 7791 transitions. Word has length 8 [2018-07-23 15:18:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:45,594 INFO L471 AbstractCegarLoop]: Abstraction has 1712 states and 7791 transitions. [2018-07-23 15:18:45,594 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 7791 transitions. [2018-07-23 15:18:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:45,595 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:45,595 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:45,595 INFO L414 AbstractCegarLoop]: === Iteration 83 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:45,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1364360826, now seen corresponding path program 1 times [2018-07-23 15:18:45,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:45,602 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:45,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:45,603 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:45,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:45,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:45,603 INFO L87 Difference]: Start difference. First operand 1712 states and 7791 transitions. Second operand 8 states. [2018-07-23 15:18:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:52,463 INFO L93 Difference]: Finished difference Result 3383 states and 13936 transitions. [2018-07-23 15:18:52,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:18:52,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:18:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:52,471 INFO L225 Difference]: With dead ends: 3383 [2018-07-23 15:18:52,471 INFO L226 Difference]: Without dead ends: 3374 [2018-07-23 15:18:52,471 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:18:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-07-23 15:18:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 1737. [2018-07-23 15:18:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2018-07-23 15:18:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 7901 transitions. [2018-07-23 15:18:55,444 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 7901 transitions. Word has length 8 [2018-07-23 15:18:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:55,444 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 7901 transitions. [2018-07-23 15:18:55,444 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:18:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 7901 transitions. [2018-07-23 15:18:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:18:55,445 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:55,445 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:55,445 INFO L414 AbstractCegarLoop]: === Iteration 84 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1363850045, now seen corresponding path program 1 times [2018-07-23 15:18:55,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:55,455 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:18:55,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:18:55,455 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:18:55,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:18:55,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:18:55,456 INFO L87 Difference]: Start difference. First operand 1737 states and 7901 transitions. Second operand 8 states. [2018-07-23 15:19:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:01,448 INFO L93 Difference]: Finished difference Result 2928 states and 12105 transitions. [2018-07-23 15:19:01,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:19:01,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:19:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:01,455 INFO L225 Difference]: With dead ends: 2928 [2018-07-23 15:19:01,456 INFO L226 Difference]: Without dead ends: 2919 [2018-07-23 15:19:01,456 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:19:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2018-07-23 15:19:04,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1817. [2018-07-23 15:19:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2018-07-23 15:19:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 8308 transitions. [2018-07-23 15:19:04,598 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 8308 transitions. Word has length 8 [2018-07-23 15:19:04,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:04,598 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 8308 transitions. [2018-07-23 15:19:04,598 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:19:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 8308 transitions. [2018-07-23 15:19:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:19:04,599 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:04,599 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:04,599 INFO L414 AbstractCegarLoop]: === Iteration 85 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:19:04,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1363850042, now seen corresponding path program 1 times [2018-07-23 15:19:04,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:04,608 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:19:04,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:19:04,608 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:19:04,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:19:04,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:19:04,609 INFO L87 Difference]: Start difference. First operand 1817 states and 8308 transitions. Second operand 8 states. [2018-07-23 15:19:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:10,601 INFO L93 Difference]: Finished difference Result 2907 states and 12077 transitions. [2018-07-23 15:19:10,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:19:10,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:19:10,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:10,608 INFO L225 Difference]: With dead ends: 2907 [2018-07-23 15:19:10,608 INFO L226 Difference]: Without dead ends: 2889 [2018-07-23 15:19:10,609 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:19:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2018-07-23 15:19:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1774. [2018-07-23 15:19:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2018-07-23 15:19:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 8124 transitions. [2018-07-23 15:19:13,770 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 8124 transitions. Word has length 8 [2018-07-23 15:19:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,770 INFO L471 AbstractCegarLoop]: Abstraction has 1774 states and 8124 transitions. [2018-07-23 15:19:13,770 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:19:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 8124 transitions. [2018-07-23 15:19:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:19:13,772 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,772 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,772 INFO L414 AbstractCegarLoop]: === Iteration 86 === [productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr23AssertViolationASSERT, productErr7AssertViolationASSERT, productErr17AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr16AssertViolationASSERT, productErr20AssertViolationASSERT, productErr13AssertViolationASSERT, productErr24AssertViolationASSERT, productErr1AssertViolationASSERT, productErr21AssertViolationASSERT, productErr5AssertViolationASSERT, productErr15AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr19AssertViolationASSERT, productErr25AssertViolationASSERT, productErr22AssertViolationASSERT, productErr14AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr18AssertViolationASSERT, productErr26AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:19:13,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1363849580, now seen corresponding path program 1 times [2018-07-23 15:19:13,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,783 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:19:13,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:19:13,784 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:19:13,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:19:13,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:19:13,784 INFO L87 Difference]: Start difference. First operand 1774 states and 8124 transitions. Second operand 8 states. Received shutdown request... [2018-07-23 15:19:14,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:19:14,391 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:19:14,397 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:19:14,398 INFO L202 PluginConnector]: Adding new model threadpooling_out3.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:19:14 BoogieIcfgContainer [2018-07-23 15:19:14,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:19:14,399 INFO L168 Benchmark]: Toolchain (without parser) took 253466.70 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 1.3 GB in the end (delta: 128.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:19:14,401 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:19:14,401 INFO L168 Benchmark]: Boogie Preprocessor took 105.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:19:14,402 INFO L168 Benchmark]: RCFGBuilder took 636.99 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 15:19:14,402 INFO L168 Benchmark]: TraceAbstraction took 252719.44 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 1.3 GB in the end (delta: 107.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:19:14,405 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 0.21 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 105.73 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 636.99 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252719.44 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 1.3 GB in the end (delta: 107.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 579]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 579). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 446]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 446). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 800]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 800). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 337]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 337). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 604]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 604). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 194]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 194). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 470]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 470). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 599]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 599). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 645]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 645). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 584]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 584). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 816]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 816). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 660]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 660). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 263]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 263). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 594]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 594). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 71). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 223]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 223). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 569]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 569). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 640]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 640). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 832]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 832). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 675]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 675). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 589]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 589). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 316]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 316). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 624]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 624). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 847]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 847). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 574]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 574). Cancelled while BasicCegarLoop was constructing difference of abstraction (1774states) and interpolant automaton (currently 10 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (304 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 27 error locations. TIMEOUT Result, 252.6s OverallTime, 86 OverallIterations, 2 TraceHistogramMax, 170.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19318 SDtfs, 37422 SDslu, 29107 SDs, 0 SdLazy, 188230 SolverSat, 16900 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1333 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3209 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1817occurred in iteration=84, 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: 80.0s AutomataMinimizationTime, 85 MinimizatonAttempts, 47244 StatesRemovedByMinimization, 85 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 24793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 86 InterpolantComputations, 86 PerfectInterpolantSequences, 4/4 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_out3.mover.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-19-14-418.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_out3.mover.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-19-14-418.csv Completed graceful shutdown