java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:18,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:18,528 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:18,541 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:18,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:18,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:18,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:18,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:18,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:18,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:18,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:33:18,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:33:18,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:33:18,551 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:33:18,552 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:33:18,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:33:18,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:33:18,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:33:18,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:33:18,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:33:18,561 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:33:18,567 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:33:18,570 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 16:33:18,570 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 16:33:18,570 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 16:33:18,571 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 16:33:18,572 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 16:33:18,573 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 16:33:18,574 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 16:33:18,575 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 16:33:18,575 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 16:33:18,576 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-14 16:33:18,578 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:33:18,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:18,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:18,589 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:18,589 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:18,590 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:18,590 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:18,591 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:18,591 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:18,591 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:18,591 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:18,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:18,592 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:18,592 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:18,592 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:18,593 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:18,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:18,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:18,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:18,654 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:18,654 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:18,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-14 16:33:18,655 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-14 16:33:18,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:18,715 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:18,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:18,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:18,716 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:18,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... [2018-10-14 16:33:18,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:18,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:18,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:18,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:18,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:33:18,849 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:19,609 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:19,611 INFO L202 PluginConnector]: Adding new model add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:19 BoogieIcfgContainer [2018-10-14 16:33:19,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:19,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:19,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:19,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:19,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:18" (1/2) ... [2018-10-14 16:33:19,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113947ee and model type add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:19, skipping insertion in model container [2018-10-14 16:33:19,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:19" (2/2) ... [2018-10-14 16:33:19,620 INFO L112 eAbstractionObserver]: Analyzing ICFG add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-14 16:33:19,629 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:19,636 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:19,653 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:19,682 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:19,682 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:19,683 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:19,683 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:19,683 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:19,683 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:19,683 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:19,683 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:19,684 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-10-14 16:33:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-14 16:33:19,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:19,712 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:19,713 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:19,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:19,719 INFO L82 PathProgramCache]: Analyzing trace with hash 283494751, now seen corresponding path program 1 times [2018-10-14 16:33:19,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:20,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:20,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-14 16:33:20,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:33:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:33:20,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:33:20,477 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 10 states. [2018-10-14 16:33:21,127 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-14 16:33:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:21,462 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-14 16:33:21,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:33:21,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-10-14 16:33:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:21,477 INFO L225 Difference]: With dead ends: 121 [2018-10-14 16:33:21,478 INFO L226 Difference]: Without dead ends: 121 [2018-10-14 16:33:21,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:33:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-14 16:33:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 77. [2018-10-14 16:33:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-14 16:33:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-14 16:33:21,526 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 28 [2018-10-14 16:33:21,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:21,527 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-14 16:33:21,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:33:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-14 16:33:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-14 16:33:21,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:21,530 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:21,531 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:21,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:21,532 INFO L82 PathProgramCache]: Analyzing trace with hash -984866601, now seen corresponding path program 1 times [2018-10-14 16:33:21,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:22,062 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-14 16:33:22,245 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-14 16:33:22,797 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2018-10-14 16:33:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:23,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:23,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-14 16:33:23,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-14 16:33:23,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-14 16:33:23,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:33:23,206 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 20 states. [2018-10-14 16:33:24,498 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:33:24,938 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-14 16:33:25,137 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-14 16:33:25,408 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-10-14 16:33:25,658 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-14 16:33:25,925 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-14 16:33:26,056 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2018-10-14 16:33:26,802 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2018-10-14 16:33:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:27,745 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-14 16:33:27,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:33:27,747 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2018-10-14 16:33:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:27,750 INFO L225 Difference]: With dead ends: 169 [2018-10-14 16:33:27,750 INFO L226 Difference]: Without dead ends: 169 [2018-10-14 16:33:27,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=397, Invalid=1325, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:33:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-14 16:33:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 125. [2018-10-14 16:33:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-14 16:33:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-14 16:33:27,765 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 76 [2018-10-14 16:33:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:27,765 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-14 16:33:27,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-14 16:33:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-14 16:33:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-14 16:33:27,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:27,768 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:27,768 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:27,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:27,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1636345935, now seen corresponding path program 2 times [2018-10-14 16:33:27,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:28,651 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-10-14 16:33:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:29,197 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:29,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-14 16:33:29,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-14 16:33:29,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-14 16:33:29,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:33:29,199 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 24 states. [2018-10-14 16:33:31,045 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:33:31,319 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:33:31,484 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-14 16:33:31,716 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:33:31,936 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-14 16:33:32,226 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-14 16:33:32,510 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-14 16:33:32,803 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-14 16:33:33,160 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-14 16:33:33,704 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-14 16:33:34,195 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:33:34,380 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:33:34,710 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-14 16:33:34,926 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:33:35,261 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:33:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:35,664 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-14 16:33:35,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-14 16:33:35,665 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 124 [2018-10-14 16:33:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:35,668 INFO L225 Difference]: With dead ends: 217 [2018-10-14 16:33:35,668 INFO L226 Difference]: Without dead ends: 217 [2018-10-14 16:33:35,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=441, Invalid=1815, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:33:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-14 16:33:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 173. [2018-10-14 16:33:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-14 16:33:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-14 16:33:35,686 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 124 [2018-10-14 16:33:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:35,686 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-14 16:33:35,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-14 16:33:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-14 16:33:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-14 16:33:35,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:35,690 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:35,690 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:35,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:35,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1853579207, now seen corresponding path program 3 times [2018-10-14 16:33:35,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:36,391 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-14 16:33:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:37,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:37,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-14 16:33:37,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-14 16:33:37,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-14 16:33:37,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:33:37,684 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 26 states. [2018-10-14 16:33:38,475 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2018-10-14 16:33:38,653 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:33:38,862 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-14 16:33:39,035 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-14 16:33:39,656 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-14 16:33:39,929 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-14 16:33:40,125 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-14 16:33:40,306 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-14 16:33:40,641 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-14 16:33:40,911 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:33:41,237 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-14 16:33:41,480 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-14 16:33:42,034 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-14 16:33:42,315 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-10-14 16:33:42,514 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:33:42,751 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-14 16:33:43,094 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-14 16:33:43,364 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-10-14 16:33:43,711 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-14 16:33:44,006 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-14 16:33:44,499 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-14 16:33:44,965 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:33:45,170 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-14 16:33:45,402 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-14 16:33:45,700 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-10-14 16:33:45,973 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:33:46,533 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-14 16:33:46,793 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:33:47,058 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:33:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:47,066 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-14 16:33:47,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:33:47,074 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 172 [2018-10-14 16:33:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:47,076 INFO L225 Difference]: With dead ends: 265 [2018-10-14 16:33:47,076 INFO L226 Difference]: Without dead ends: 265 [2018-10-14 16:33:47,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=740, Invalid=3550, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:33:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-14 16:33:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 221. [2018-10-14 16:33:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-14 16:33:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-14 16:33:47,096 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 172 [2018-10-14 16:33:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:47,097 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-14 16:33:47,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-14 16:33:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-14 16:33:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-14 16:33:47,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:47,102 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:47,102 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:47,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:47,102 INFO L82 PathProgramCache]: Analyzing trace with hash 889472831, now seen corresponding path program 4 times [2018-10-14 16:33:47,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:47,510 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-14 16:33:47,713 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-14 16:33:47,917 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-14 16:33:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:49,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:49,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-14 16:33:49,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-14 16:33:49,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-14 16:33:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:33:49,247 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 28 states. [2018-10-14 16:33:50,631 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-14 16:33:50,944 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-14 16:33:51,100 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-10-14 16:33:51,763 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-10-14 16:33:51,995 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-14 16:33:52,180 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-14 16:33:52,828 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-14 16:33:53,064 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-14 16:33:53,224 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-14 16:33:53,436 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:33:53,661 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-10-14 16:33:53,937 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:33:54,185 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-14 16:33:54,492 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-14 16:33:54,776 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-14 16:33:55,313 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-14 16:33:55,796 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:33:56,061 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:33:56,328 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-14 16:33:56,516 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:33:56,722 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-14 16:33:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:57,090 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-14 16:33:57,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-14 16:33:57,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 220 [2018-10-14 16:33:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:57,093 INFO L225 Difference]: With dead ends: 313 [2018-10-14 16:33:57,093 INFO L226 Difference]: Without dead ends: 313 [2018-10-14 16:33:57,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=523, Invalid=2783, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:33:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-14 16:33:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 269. [2018-10-14 16:33:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-14 16:33:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-10-14 16:33:57,106 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 220 [2018-10-14 16:33:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:57,107 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-10-14 16:33:57,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-14 16:33:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-10-14 16:33:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-14 16:33:57,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:57,113 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:57,113 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:57,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:57,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1107075401, now seen corresponding path program 5 times [2018-10-14 16:33:57,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:59,220 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:59,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-14 16:33:59,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-14 16:33:59,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-14 16:33:59,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2018-10-14 16:33:59,221 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 30 states. [2018-10-14 16:33:59,909 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-14 16:34:00,174 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-14 16:34:00,431 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2018-10-14 16:34:00,697 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-14 16:34:00,917 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-14 16:34:01,537 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-14 16:34:01,846 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-14 16:34:02,077 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-14 16:34:02,259 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-14 16:34:02,512 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-14 16:34:02,779 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-14 16:34:03,145 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-10-14 16:34:03,412 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:34:04,043 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-10-14 16:34:04,301 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:34:04,459 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:34:04,734 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-14 16:34:04,994 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-14 16:34:05,308 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-14 16:34:05,583 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-14 16:34:05,825 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:34:06,538 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-14 16:34:06,769 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:34:06,926 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:34:07,203 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-14 16:34:07,467 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-14 16:34:07,782 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-14 16:34:08,057 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-14 16:34:08,305 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:34:08,935 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-14 16:34:09,169 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:34:09,331 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:34:09,568 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-14 16:34:09,835 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-14 16:34:10,161 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-14 16:34:10,466 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2018-10-14 16:34:10,842 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-10-14 16:34:11,232 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-14 16:34:11,432 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2018-10-14 16:34:11,766 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-10-14 16:34:12,103 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:34:12,711 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-14 16:34:12,939 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-14 16:34:13,207 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-14 16:34:13,437 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-14 16:34:13,652 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-14 16:34:14,254 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2018-10-14 16:34:14,459 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-10-14 16:34:14,656 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-14 16:34:14,865 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-14 16:34:15,024 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2018-10-14 16:34:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:15,030 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-14 16:34:15,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 16:34:15,031 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 268 [2018-10-14 16:34:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:15,035 INFO L225 Difference]: With dead ends: 361 [2018-10-14 16:34:15,035 INFO L226 Difference]: Without dead ends: 361 [2018-10-14 16:34:15,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1010, Invalid=6472, Unknown=0, NotChecked=0, Total=7482 [2018-10-14 16:34:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-14 16:34:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 317. [2018-10-14 16:34:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-14 16:34:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-14 16:34:15,048 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 268 [2018-10-14 16:34:15,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:15,049 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-14 16:34:15,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-14 16:34:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-14 16:34:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-14 16:34:15,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:15,056 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:15,056 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:15,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:15,056 INFO L82 PathProgramCache]: Analyzing trace with hash -765942225, now seen corresponding path program 6 times [2018-10-14 16:34:15,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:15,541 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:34:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:17,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:17,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 16:34:17,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 16:34:17,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 16:34:17,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:34:17,817 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 34 states. [2018-10-14 16:34:19,126 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:34:19,373 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:34:19,540 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-10-14 16:34:20,314 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:34:20,573 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:34:20,742 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:34:21,556 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:34:21,844 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:34:22,010 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:34:22,780 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:34:23,097 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:34:23,294 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:34:23,492 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-10-14 16:34:23,698 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-14 16:34:23,966 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-14 16:34:24,656 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:34:24,920 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:34:25,092 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-14 16:34:25,335 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:34:25,604 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:34:25,929 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-14 16:34:26,181 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-14 16:34:26,532 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-14 16:34:27,229 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-10-14 16:34:27,822 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-14 16:34:28,328 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-14 16:34:28,525 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-10-14 16:34:28,855 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:34:29,056 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-10-14 16:34:29,276 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-10-14 16:34:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:29,752 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-14 16:34:29,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-14 16:34:29,752 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 316 [2018-10-14 16:34:29,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:29,754 INFO L225 Difference]: With dead ends: 409 [2018-10-14 16:34:29,755 INFO L226 Difference]: Without dead ends: 409 [2018-10-14 16:34:29,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=655, Invalid=4601, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:34:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-10-14 16:34:29,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 365. [2018-10-14 16:34:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-14 16:34:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-10-14 16:34:29,764 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 316 [2018-10-14 16:34:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:29,765 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-10-14 16:34:29,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 16:34:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-10-14 16:34:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-14 16:34:29,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:29,772 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:29,772 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:29,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:29,773 INFO L82 PathProgramCache]: Analyzing trace with hash -85713497, now seen corresponding path program 7 times [2018-10-14 16:34:29,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:30,297 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:34:30,465 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:34:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:33,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:33,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 16:34:33,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 16:34:33,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 16:34:33,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:34:33,125 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 34 states. [2018-10-14 16:34:34,037 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-14 16:34:34,278 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-14 16:34:34,472 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-10-14 16:34:35,231 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:34:35,513 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-14 16:34:36,222 WARN L179 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-14 16:34:36,407 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-14 16:34:36,670 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-14 16:34:36,981 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-14 16:34:37,362 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-14 16:34:37,630 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 16:34:38,282 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-14 16:34:38,556 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-14 16:34:38,742 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-14 16:34:39,032 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-14 16:34:39,278 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-14 16:34:39,667 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 16:34:39,926 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-14 16:34:40,206 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-14 16:34:40,875 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-14 16:34:41,126 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-14 16:34:41,292 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-14 16:34:41,590 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-14 16:34:41,861 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:34:42,271 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 16:34:42,635 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-14 16:34:42,901 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-14 16:34:43,576 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-14 16:34:43,828 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-14 16:34:43,997 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-14 16:34:44,287 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-14 16:34:44,550 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:34:44,866 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 16:34:45,125 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-14 16:34:45,381 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-14 16:34:46,067 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-14 16:34:46,316 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-14 16:34:46,483 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-14 16:34:46,774 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-14 16:34:47,054 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-14 16:34:47,406 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 16:34:47,679 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-14 16:34:47,965 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-14 16:34:48,694 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-14 16:34:49,001 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-14 16:34:49,217 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-14 16:34:49,484 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-14 16:34:49,870 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:34:50,146 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2018-10-14 16:34:50,505 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:34:50,828 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-14 16:34:51,518 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-14 16:34:52,092 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:34:52,349 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-10-14 16:34:52,647 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-14 16:34:52,864 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-14 16:34:53,099 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:34:53,990 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-14 16:34:54,164 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:34:54,351 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-14 16:34:54,527 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:34:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:54,534 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-10-14 16:34:54,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-14 16:34:54,540 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 364 [2018-10-14 16:34:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:54,543 INFO L225 Difference]: With dead ends: 457 [2018-10-14 16:34:54,544 INFO L226 Difference]: Without dead ends: 457 [2018-10-14 16:34:54,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=1252, Invalid=9878, Unknown=0, NotChecked=0, Total=11130 [2018-10-14 16:34:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-10-14 16:34:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 413. [2018-10-14 16:34:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-10-14 16:34:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-10-14 16:34:54,555 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 364 [2018-10-14 16:34:54,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:54,555 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-10-14 16:34:54,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 16:34:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-10-14 16:34:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-14 16:34:54,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:54,561 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:54,562 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:54,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:54,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2138716897, now seen corresponding path program 8 times [2018-10-14 16:34:54,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:55,200 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:34:55,358 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:34:55,558 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:34:55,775 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:34:56,284 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-14 16:34:56,700 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-14 16:34:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 1368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:59,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:59,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 16:34:59,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 16:34:59,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 16:34:59,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:34:59,855 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 36 states. [2018-10-14 16:35:00,839 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:35:01,108 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-14 16:35:01,313 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-14 16:35:01,528 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-14 16:35:02,148 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-14 16:35:02,570 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:35:02,791 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:35:02,980 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-14 16:35:03,259 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-14 16:35:03,511 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-14 16:35:03,885 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-14 16:35:04,165 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:35:04,878 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-14 16:35:05,123 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:35:05,313 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-14 16:35:05,629 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-14 16:35:05,885 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-14 16:35:06,200 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:35:06,457 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-14 16:35:06,728 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:35:07,484 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-14 16:35:07,800 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:35:07,975 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:35:08,288 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:35:08,547 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:08,875 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:35:09,146 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:35:09,427 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:10,180 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 16:35:10,429 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:10,600 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:35:10,906 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:35:11,149 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:11,472 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:35:11,727 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:35:12,010 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:12,790 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 16:35:13,068 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:13,233 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:35:13,569 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:35:13,822 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:14,149 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:35:14,413 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:35:14,683 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:15,450 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 16:35:15,704 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:15,880 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:35:16,191 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:35:16,450 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:16,782 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:35:17,044 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:35:17,335 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:35:18,128 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 16:35:18,433 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-14 16:35:18,644 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-14 16:35:18,903 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:19,300 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-14 16:35:19,605 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-14 16:35:20,002 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-14 16:35:20,347 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-14 16:35:21,057 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2018-10-14 16:35:21,630 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:35:21,853 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:35:22,131 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-14 16:35:22,353 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:35:22,598 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:35:23,371 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-14 16:35:23,569 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-14 16:35:23,747 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:35:23,948 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-14 16:35:24,128 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:35:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:24,162 INFO L93 Difference]: Finished difference Result 505 states and 505 transitions. [2018-10-14 16:35:24,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-14 16:35:24,162 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 412 [2018-10-14 16:35:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:24,165 INFO L225 Difference]: With dead ends: 505 [2018-10-14 16:35:24,165 INFO L226 Difference]: Without dead ends: 505 [2018-10-14 16:35:24,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=1380, Invalid=11960, Unknown=0, NotChecked=0, Total=13340 [2018-10-14 16:35:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-10-14 16:35:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 461. [2018-10-14 16:35:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-10-14 16:35:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 461 transitions. [2018-10-14 16:35:24,178 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 461 transitions. Word has length 412 [2018-10-14 16:35:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:24,179 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 461 transitions. [2018-10-14 16:35:24,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 16:35:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 461 transitions. [2018-10-14 16:35:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-10-14 16:35:24,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:24,182 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:35:24,182 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:24,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1813879959, now seen corresponding path program 9 times [2018-10-14 16:35:24,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 0 proven. 1755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:35:28,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:28,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-14 16:35:28,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-14 16:35:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-14 16:35:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1319, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:35:28,036 INFO L87 Difference]: Start difference. First operand 461 states and 461 transitions. Second operand 38 states. [2018-10-14 16:35:28,967 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-14 16:35:29,195 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:35:29,496 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-10-14 16:35:29,729 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:35:29,960 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-14 16:35:30,680 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-14 16:35:30,984 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-14 16:35:31,212 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-14 16:35:31,428 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:35:32,302 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-14 16:35:32,571 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:32,751 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:35:33,698 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-14 16:35:33,970 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:35:34,145 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:35:35,020 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:35,281 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:35:35,466 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:35:36,361 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:36,619 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:35:36,803 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:35:37,729 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:38,002 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:35:38,201 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:35:39,165 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:39,433 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:35:39,614 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:35:40,536 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:35:40,804 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:35:40,977 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:35:41,241 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:35:41,542 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-14 16:35:41,884 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-14 16:35:42,190 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-14 16:35:42,484 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-14 16:35:42,836 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2018-10-14 16:35:43,169 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2018-10-14 16:35:43,539 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2018-10-14 16:35:44,175 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-14 16:35:44,786 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:35:45,002 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:35:45,292 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-14 16:35:45,503 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:35:45,758 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-14 16:35:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:46,399 INFO L93 Difference]: Finished difference Result 553 states and 553 transitions. [2018-10-14 16:35:46,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:35:46,400 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 460 [2018-10-14 16:35:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:46,403 INFO L225 Difference]: With dead ends: 553 [2018-10-14 16:35:46,403 INFO L226 Difference]: Without dead ends: 553 [2018-10-14 16:35:46,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=833, Invalid=7177, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:35:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2018-10-14 16:35:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 509. [2018-10-14 16:35:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-10-14 16:35:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2018-10-14 16:35:46,415 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 460 [2018-10-14 16:35:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:46,416 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2018-10-14 16:35:46,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-14 16:35:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2018-10-14 16:35:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-10-14 16:35:46,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:46,419 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:35:46,420 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:46,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:46,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2037668849, now seen corresponding path program 10 times [2018-10-14 16:35:46,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:47,067 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:35:47,243 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:35:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 0 proven. 2190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:35:51,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:51,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-14 16:35:51,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-14 16:35:51,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-14 16:35:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1623, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:35:51,327 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 42 states. [2018-10-14 16:35:52,970 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:35:53,233 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-14 16:35:53,418 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:35:54,367 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-14 16:35:54,647 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:35:54,842 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:35:55,781 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:35:56,062 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:35:56,253 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:35:57,174 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:35:57,458 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:35:57,644 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:35:58,563 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:35:58,933 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:35:59,152 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:36:00,129 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:36:00,424 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:36:00,620 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:36:01,635 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:36:01,913 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:36:02,095 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:36:03,026 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:36:03,322 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:36:03,513 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:36:03,738 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:36:04,050 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-14 16:36:04,386 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-14 16:36:05,240 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:36:05,530 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-10-14 16:36:05,722 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-14 16:36:05,982 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:36:06,261 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:36:06,609 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-14 16:36:06,917 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-14 16:36:07,326 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-14 16:36:07,683 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-14 16:36:08,472 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-14 16:36:09,165 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:36:09,431 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:36:09,724 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-14 16:36:09,942 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:36:10,202 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:36:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:10,904 INFO L93 Difference]: Finished difference Result 601 states and 601 transitions. [2018-10-14 16:36:10,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:36:10,904 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 508 [2018-10-14 16:36:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:10,908 INFO L225 Difference]: With dead ends: 601 [2018-10-14 16:36:10,908 INFO L226 Difference]: Without dead ends: 601 [2018-10-14 16:36:10,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=819, Invalid=7737, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:36:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-10-14 16:36:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 557. [2018-10-14 16:36:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-10-14 16:36:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 557 transitions. [2018-10-14 16:36:10,918 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 557 transitions. Word has length 508 [2018-10-14 16:36:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:10,919 INFO L481 AbstractCegarLoop]: Abstraction has 557 states and 557 transitions. [2018-10-14 16:36:10,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-14 16:36:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 557 transitions. [2018-10-14 16:36:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-10-14 16:36:10,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:10,923 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:36:10,923 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:10,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1487920007, now seen corresponding path program 11 times [2018-10-14 16:36:10,924 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:11,587 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:36:11,773 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:36:11,973 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:36:12,201 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:36:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:36:16,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:16,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-14 16:36:16,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-14 16:36:16,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-14 16:36:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1789, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:36:16,765 INFO L87 Difference]: Start difference. First operand 557 states and 557 transitions. Second operand 44 states. [2018-10-14 16:36:17,864 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 16:36:18,146 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-14 16:36:18,351 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-14 16:36:19,405 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2018-10-14 16:36:19,727 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-14 16:36:19,950 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:36:20,161 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:36:20,451 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:36:20,719 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:36:21,133 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:36:21,425 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:36:22,216 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:36:22,486 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:36:22,672 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:23,017 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:36:23,323 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:36:23,687 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:36:23,993 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:36:24,320 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:36:25,183 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:36:25,446 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:36:25,631 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:25,961 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:36:26,227 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:36:26,578 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:36:26,853 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:36:27,139 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-14 16:36:27,935 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-14 16:36:28,202 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:36:28,382 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:28,701 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:36:28,962 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:36:29,314 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:36:29,685 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:36:29,998 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-14 16:36:30,842 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-14 16:36:31,117 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:36:31,301 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:31,641 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:36:31,919 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:36:32,284 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:36:32,559 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:36:32,874 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-14 16:36:33,772 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-14 16:36:34,073 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:36:34,277 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:34,711 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:36:35,031 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:36:35,416 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:36:35,718 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:36:36,020 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-14 16:36:36,823 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-14 16:36:37,102 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:36:37,305 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:37,636 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:36:37,899 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:36:38,248 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:36:38,517 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-14 16:36:38,818 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-14 16:36:39,655 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-14 16:36:39,983 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:36:40,174 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:36:40,393 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:36:40,622 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-14 16:36:40,929 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:36:41,201 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-14 16:36:41,564 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:36:41,846 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-14 16:36:42,154 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-14 16:36:43,027 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-14 16:36:43,312 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:36:43,496 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-14 16:36:43,847 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-14 16:36:44,130 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-14 16:36:44,521 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:36:44,834 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-14 16:36:45,185 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:36:46,023 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2018-10-14 16:36:46,350 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-14 16:36:46,580 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-14 16:36:46,853 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-14 16:36:47,292 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-14 16:36:47,604 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2018-10-14 16:36:48,049 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-10-14 16:36:48,429 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-14 16:36:49,262 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-14 16:36:49,933 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:36:50,260 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:36:50,594 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-10-14 16:36:50,828 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:36:51,090 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-14 16:36:51,943 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-10-14 16:36:52,137 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-14 16:36:52,328 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-14 16:36:52,659 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-14 16:36:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:52,667 INFO L93 Difference]: Finished difference Result 649 states and 649 transitions. [2018-10-14 16:36:52,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-14 16:36:52,668 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 556 [2018-10-14 16:36:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:52,672 INFO L225 Difference]: With dead ends: 649 [2018-10-14 16:36:52,672 INFO L226 Difference]: Without dead ends: 649 [2018-10-14 16:36:52,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5827 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=1808, Invalid=20542, Unknown=0, NotChecked=0, Total=22350 [2018-10-14 16:36:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2018-10-14 16:36:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 605. [2018-10-14 16:36:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-10-14 16:36:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 605 transitions. [2018-10-14 16:36:52,683 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 605 transitions. Word has length 556 [2018-10-14 16:36:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:52,684 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 605 transitions. [2018-10-14 16:36:52,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-14 16:36:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 605 transitions. [2018-10-14 16:36:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-10-14 16:36:52,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:52,689 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:36:52,689 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:52,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:52,690 INFO L82 PathProgramCache]: Analyzing trace with hash 728384255, now seen corresponding path program 12 times [2018-10-14 16:36:52,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:53,408 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:36:53,592 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:36:53,779 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:36:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 0 proven. 3204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:36:58,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:58,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-14 16:36:58,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-14 16:36:58,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-14 16:36:58,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1963, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:36:58,914 INFO L87 Difference]: Start difference. First operand 605 states and 605 transitions. Second operand 46 states. [2018-10-14 16:37:00,701 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:37:00,963 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:37:01,148 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:37:02,089 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-14 16:37:02,367 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:37:02,559 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:37:03,534 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:37:03,806 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:37:03,996 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:37:04,971 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-14 16:37:05,276 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:37:05,520 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:37:06,520 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:37:06,794 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:37:06,973 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:37:07,965 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:37:08,245 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:37:08,435 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:37:09,431 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:37:09,716 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:37:09,915 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:37:10,973 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:37:11,258 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:37:11,442 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:37:11,662 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:37:11,890 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-14 16:37:12,209 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-14 16:37:13,080 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:37:13,363 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-14 16:37:13,565 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-14 16:37:14,576 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:37:14,874 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:37:15,069 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:37:16,138 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:37:16,433 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:37:16,623 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-14 16:37:16,884 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:37:17,181 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:37:17,529 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-14 16:37:17,828 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-14 16:37:18,262 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-14 16:37:18,615 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-10-14 16:37:18,802 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-14 16:37:19,551 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-14 16:37:20,220 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:37:20,452 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:37:20,855 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-14 16:37:21,096 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:37:21,376 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:37:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:37:22,093 INFO L93 Difference]: Finished difference Result 697 states and 697 transitions. [2018-10-14 16:37:22,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 16:37:22,094 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 604 [2018-10-14 16:37:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:37:22,098 INFO L225 Difference]: With dead ends: 697 [2018-10-14 16:37:22,098 INFO L226 Difference]: Without dead ends: 697 [2018-10-14 16:37:22,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=901, Invalid=9605, Unknown=0, NotChecked=0, Total=10506 [2018-10-14 16:37:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-14 16:37:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 653. [2018-10-14 16:37:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2018-10-14 16:37:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 653 transitions. [2018-10-14 16:37:22,108 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 653 transitions. Word has length 604 [2018-10-14 16:37:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:37:22,109 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 653 transitions. [2018-10-14 16:37:22,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-14 16:37:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 653 transitions. [2018-10-14 16:37:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-10-14 16:37:22,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:37:22,114 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:37:22,114 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:37:22,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:37:22,115 INFO L82 PathProgramCache]: Analyzing trace with hash 127588983, now seen corresponding path program 13 times [2018-10-14 16:37:22,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:37:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:37:22,834 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:37:23,023 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:37:23,218 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:37:23,429 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:37:23,919 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-14 16:37:24,351 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-14 16:37:24,866 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-10-14 16:37:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:37:30,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:37:30,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-14 16:37:30,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-14 16:37:30,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-14 16:37:30,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1967, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:37:30,376 INFO L87 Difference]: Start difference. First operand 653 states and 653 transitions. Second operand 46 states. [2018-10-14 16:37:31,588 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-14 16:37:31,821 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:37:32,156 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-10-14 16:37:32,408 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:37:32,669 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-14 16:37:33,507 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-14 16:37:33,824 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 16:37:34,057 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:37:34,283 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:37:35,271 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-14 16:37:35,561 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:37:35,753 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:36,906 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:37,199 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:37:37,398 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:37:38,457 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-14 16:37:38,751 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:37:38,948 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:40,015 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:40,316 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:40,556 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:41,716 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:42,006 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:42,200 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:43,285 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:43,583 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:43,794 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:44,900 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:45,214 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:45,419 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:46,630 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:46,933 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:47,133 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:48,213 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:48,512 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:48,721 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:49,799 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:37:50,102 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:37:50,303 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:51,467 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-14 16:37:51,788 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:37:51,987 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:37:52,258 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-14 16:37:52,666 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-14 16:37:53,065 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-14 16:37:53,396 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2018-10-14 16:37:53,716 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-14 16:37:54,126 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-10-14 16:37:54,494 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-14 16:37:55,590 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-14 16:37:56,295 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:37:56,574 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:37:56,941 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-14 16:37:57,185 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:37:57,476 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:37:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:37:58,343 INFO L93 Difference]: Finished difference Result 745 states and 745 transitions. [2018-10-14 16:37:58,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-14 16:37:58,344 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 652 [2018-10-14 16:37:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:37:58,347 INFO L225 Difference]: With dead ends: 745 [2018-10-14 16:37:58,347 INFO L226 Difference]: Without dead ends: 745 [2018-10-14 16:37:58,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=997, Invalid=10993, Unknown=0, NotChecked=0, Total=11990 [2018-10-14 16:37:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-10-14 16:37:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 701. [2018-10-14 16:37:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2018-10-14 16:37:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 701 transitions. [2018-10-14 16:37:58,358 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 701 transitions. Word has length 652 [2018-10-14 16:37:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:37:58,359 INFO L481 AbstractCegarLoop]: Abstraction has 701 states and 701 transitions. [2018-10-14 16:37:58,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-14 16:37:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 701 transitions. [2018-10-14 16:37:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-10-14 16:37:58,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:37:58,364 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:37:58,365 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:37:58,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:37:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1239309841, now seen corresponding path program 14 times [2018-10-14 16:37:58,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:37:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:37:59,312 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:37:59,514 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:37:59,733 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:38:00,262 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-14 16:38:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4410 backedges. 0 proven. 4410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:38:06,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:38:06,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-14 16:38:06,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-14 16:38:06,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-14 16:38:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2335, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:38:06,612 INFO L87 Difference]: Start difference. First operand 701 states and 701 transitions. Second operand 50 states. [2018-10-14 16:38:07,880 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:38:08,203 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-14 16:38:08,427 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-14 16:38:09,491 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-14 16:38:09,817 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-14 16:38:10,054 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-14 16:38:10,279 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:38:10,615 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-14 16:38:10,889 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-14 16:38:11,345 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-14 16:38:11,663 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:38:12,664 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-14 16:38:12,954 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:38:13,154 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:13,522 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:13,807 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:38:14,214 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:14,505 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-14 16:38:14,831 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:15,780 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:16,069 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:16,264 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:16,627 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:16,930 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:17,398 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:17,688 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:17,998 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:18,923 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:19,214 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:19,408 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:19,769 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:20,061 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:20,457 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:20,738 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:21,060 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:22,024 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:22,375 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:22,566 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:22,927 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:23,214 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:38:23,598 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:23,890 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-14 16:38:24,222 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:25,171 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:25,457 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:25,648 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:26,010 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:26,302 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:26,693 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:26,990 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:27,362 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:28,327 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:28,623 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:28,818 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:29,189 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:29,481 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:29,888 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:30,186 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:30,511 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:31,469 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:31,771 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:31,961 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:32,359 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:32,711 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:33,102 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:33,394 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:33,715 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:34,651 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-14 16:38:34,940 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:38:35,140 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:35,494 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:35,776 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:36,425 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:36,713 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:37,036 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:38,072 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:38,361 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:38,552 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:39,014 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:39,308 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:38:39,699 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:40,008 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:38:40,328 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:41,592 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:38:41,878 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:38:42,097 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:42,460 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-14 16:38:42,818 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:38:43,228 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:43,547 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-14 16:38:43,868 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:38:44,820 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-14 16:38:45,126 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:38:45,327 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:45,561 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:38:45,803 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-14 16:38:46,149 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:38:46,447 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:38:46,889 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-14 16:38:47,201 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-14 16:38:47,548 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:38:48,637 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-14 16:38:48,984 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-14 16:38:49,221 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:38:49,514 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:38:49,992 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-14 16:38:50,312 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-14 16:38:50,779 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-14 16:38:51,164 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-14 16:38:52,094 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-14 16:38:52,872 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:38:53,165 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-14 16:38:53,512 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-14 16:38:53,751 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-10-14 16:38:54,037 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:38:55,073 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-14 16:38:55,290 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-14 16:38:55,503 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:38:55,719 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-14 16:38:55,932 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:38:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:38:55,941 INFO L93 Difference]: Finished difference Result 793 states and 793 transitions. [2018-10-14 16:38:55,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-14 16:38:55,941 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 700 [2018-10-14 16:38:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:38:55,945 INFO L225 Difference]: With dead ends: 793 [2018-10-14 16:38:55,945 INFO L226 Difference]: Without dead ends: 793 [2018-10-14 16:38:55,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8685 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=2192, Invalid=30028, Unknown=0, NotChecked=0, Total=32220 [2018-10-14 16:38:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-10-14 16:38:55,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 749. [2018-10-14 16:38:55,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2018-10-14 16:38:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 749 transitions. [2018-10-14 16:38:55,960 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 749 transitions. Word has length 700 [2018-10-14 16:38:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:38:55,961 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 749 transitions. [2018-10-14 16:38:55,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-14 16:38:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 749 transitions. [2018-10-14 16:38:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-10-14 16:38:55,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:38:55,967 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:38:55,967 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:38:55,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:38:55,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1075930777, now seen corresponding path program 15 times [2018-10-14 16:38:55,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:38:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:38:56,778 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:38:56,963 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:39:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5085 backedges. 0 proven. 5085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:39:04,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:39:04,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:39:04,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:39:04,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:39:04,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2533, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:39:04,194 INFO L87 Difference]: Start difference. First operand 749 states and 749 transitions. Second operand 52 states. [2018-10-14 16:39:05,518 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:39:05,863 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-14 16:39:06,094 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-14 16:39:06,351 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-10-14 16:39:07,228 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-14 16:39:07,559 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:39:07,801 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-14 16:39:08,037 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:39:08,444 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-14 16:39:08,728 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:39:09,195 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-14 16:39:09,519 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:10,456 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-14 16:39:10,763 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:10,971 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:11,351 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-14 16:39:11,641 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:39:12,055 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-14 16:39:12,354 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-14 16:39:12,677 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:13,738 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-14 16:39:14,061 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:14,257 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:14,637 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:14,934 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:15,342 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:15,657 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:39:15,998 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:16,974 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:17,272 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:17,475 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:17,845 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:18,129 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:39:18,633 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:18,933 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:39:19,263 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:20,224 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:20,533 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:20,744 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:21,124 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:21,422 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:21,828 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:22,146 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:39:22,493 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:23,571 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:23,929 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:24,139 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:24,621 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:24,927 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:25,343 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:25,654 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:39:25,995 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:27,012 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:27,319 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:27,526 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:27,899 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:28,190 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:39:28,619 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:29,001 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:39:29,337 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:30,318 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:30,639 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:30,836 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:31,214 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:31,501 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:39:31,912 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:32,208 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:39:33,126 WARN L179 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:34,179 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:34,487 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:34,693 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:35,067 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:35,366 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:35,779 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:36,080 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:39:36,417 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:37,400 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:37,706 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:37,910 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:38,313 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:38,622 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:39,120 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:39,438 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:39:39,776 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:40,776 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-14 16:39:41,085 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:41,291 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:41,665 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:39:41,959 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:42,371 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:39:42,681 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:39:43,017 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:44,084 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-14 16:39:44,457 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:39:44,669 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:44,913 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:39:45,186 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-14 16:39:45,540 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-14 16:39:45,871 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:46,309 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:46,627 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-14 16:39:46,993 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:39:48,088 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2018-10-14 16:39:48,407 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2018-10-14 16:39:48,621 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-14 16:39:49,013 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-14 16:39:49,422 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:39:49,855 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:50,166 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-14 16:39:50,507 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:39:51,517 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2018-10-14 16:39:51,911 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-14 16:39:52,159 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:39:52,467 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:39:52,967 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-10-14 16:39:53,308 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-14 16:39:53,811 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2018-10-14 16:39:54,253 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-14 16:39:54,486 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 16:39:55,291 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-14 16:39:56,032 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-14 16:39:56,271 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-14 16:39:56,635 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-14 16:39:56,876 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-14 16:39:57,169 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-14 16:39:58,249 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-14 16:39:58,467 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-14 16:39:58,687 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:39:58,905 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-14 16:39:59,133 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-14 16:39:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:39:59,141 INFO L93 Difference]: Finished difference Result 841 states and 841 transitions. [2018-10-14 16:39:59,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-14 16:39:59,142 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 748 [2018-10-14 16:39:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:39:59,146 INFO L225 Difference]: With dead ends: 841 [2018-10-14 16:39:59,146 INFO L226 Difference]: Without dead ends: 841 [2018-10-14 16:39:59,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=2320, Invalid=33590, Unknown=0, NotChecked=0, Total=35910 [2018-10-14 16:39:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2018-10-14 16:39:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 797. [2018-10-14 16:39:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-10-14 16:39:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 797 transitions. [2018-10-14 16:39:59,159 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 797 transitions. Word has length 748 [2018-10-14 16:39:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:39:59,160 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 797 transitions. [2018-10-14 16:39:59,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:39:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 797 transitions. [2018-10-14 16:39:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-10-14 16:39:59,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:59,167 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:39:59,167 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:59,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1840365791, now seen corresponding path program 16 times [2018-10-14 16:39:59,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:40:00,016 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:40:00,216 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:40:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:40:08,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:40:08,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:40:08,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:40:08,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:40:08,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2535, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:40:08,095 INFO L87 Difference]: Start difference. First operand 797 states and 797 transitions. Second operand 52 states. [2018-10-14 16:40:09,420 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-14 16:40:09,826 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-14 16:40:10,060 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-10-14 16:40:10,313 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-14 16:40:11,163 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:40:11,487 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-14 16:40:11,729 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:40:11,949 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-14 16:40:12,266 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-14 16:40:12,550 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-14 16:40:13,028 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:40:13,349 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:14,320 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:40:14,597 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:40:14,847 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:15,259 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:15,536 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:15,939 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:16,227 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:16,545 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:17,509 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:17,789 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:17,983 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:18,343 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:18,632 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:19,040 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:19,348 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:40:19,673 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:20,683 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:20,970 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:40:21,163 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-14 16:40:21,529 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-14 16:40:21,822 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-14 16:40:22,235 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:40:22,525 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:40:22,847 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:23,818 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:40:24,107 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:40:24,301 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:24,670 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:25,012 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:25,494 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:25,795 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:40:26,117 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:27,087 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:27,378 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:27,567 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:27,939 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:28,234 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:28,652 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:28,950 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:29,285 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:30,395 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:30,701 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:30,896 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:31,289 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:31,583 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:32,000 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:32,308 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:40:32,641 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:33,623 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:33,908 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:34,108 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:34,479 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:34,776 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:35,228 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:35,607 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:40:35,938 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:36,942 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:40:37,227 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:40:37,427 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:37,793 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:38,085 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:38,499 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:38,781 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:39,110 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:40,094 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:40,427 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:40,709 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:41,079 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:41,372 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:41,782 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:42,086 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:42,411 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:43,395 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:43,680 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:43,873 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:44,254 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:44,555 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:44,969 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:45,271 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:45,721 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:46,708 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:40:46,997 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-14 16:40:47,190 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:47,567 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:47,861 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:48,272 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:48,570 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:48,894 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:49,878 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:50,161 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:50,352 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:50,831 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:51,140 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:51,553 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:51,853 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:40:52,181 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:53,207 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:40:53,497 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:53,699 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-14 16:40:54,081 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:40:54,381 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-14 16:40:54,803 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-14 16:40:55,099 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-14 16:40:55,433 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:40:56,532 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:40:56,867 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-14 16:40:57,106 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-14 16:40:57,391 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:40:57,895 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-14 16:40:58,229 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-14 16:40:58,708 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-14 16:40:59,103 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-14 16:41:00,131 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-14 16:41:00,949 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:41:01,540 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-14 16:41:01,793 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-14 16:41:02,083 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:41:03,149 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-14 16:41:03,531 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:41:03,760 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-14 16:41:03,983 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:41:03,990 INFO L93 Difference]: Finished difference Result 889 states and 889 transitions. [2018-10-14 16:41:03,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-14 16:41:03,991 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 796 [2018-10-14 16:41:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:41:03,996 INFO L225 Difference]: With dead ends: 889 [2018-10-14 16:41:03,996 INFO L226 Difference]: Without dead ends: 889 [2018-10-14 16:41:03,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10323 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=2404, Invalid=35816, Unknown=0, NotChecked=0, Total=38220 [2018-10-14 16:41:03,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2018-10-14 16:41:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 845. [2018-10-14 16:41:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2018-10-14 16:41:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 845 transitions. [2018-10-14 16:41:04,009 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 845 transitions. Word has length 796 [2018-10-14 16:41:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:41:04,010 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 845 transitions. [2018-10-14 16:41:04,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:41:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 845 transitions. [2018-10-14 16:41:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-10-14 16:41:04,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:41:04,017 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:41:04,017 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:41:04,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:41:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash -931456937, now seen corresponding path program 17 times [2018-10-14 16:41:04,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:41:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:41:04,905 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:41:05,088 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:41:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:41:13,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:41:13,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-14 16:41:13,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-14 16:41:13,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-14 16:41:13,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2743, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:41:13,651 INFO L87 Difference]: Start difference. First operand 845 states and 845 transitions. Second operand 54 states. [2018-10-14 16:41:14,809 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-14 16:41:15,136 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-10-14 16:41:15,518 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2018-10-14 16:41:15,850 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-14 16:41:16,154 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-14 16:41:17,196 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-14 16:41:17,589 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-14 16:41:17,905 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-10-14 16:41:18,162 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:41:18,517 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-14 16:41:18,874 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-14 16:41:19,453 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-10-14 16:41:19,816 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:41:20,957 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-14 16:41:21,322 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:41:21,624 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:22,040 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:22,401 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:22,914 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:23,283 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:41:23,671 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:24,816 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:25,130 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:25,342 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:25,746 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:26,106 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-14 16:41:26,663 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:27,035 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-14 16:41:27,393 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:28,503 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:28,821 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:41:29,033 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-14 16:41:29,434 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-14 16:41:29,778 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-14 16:41:30,254 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-10-14 16:41:30,614 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-10-14 16:41:30,961 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:41:32,178 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-14 16:41:32,500 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:41:32,712 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:33,118 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:33,465 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:33,948 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:34,306 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:41:34,664 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:35,789 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:36,120 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:36,336 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:36,801 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:37,183 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-14 16:41:37,659 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:38,031 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-14 16:41:38,392 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:39,513 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:39,837 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:40,055 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:40,465 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:40,812 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:41,295 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:41,661 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:41:42,092 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:43,231 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:43,556 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:43,769 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:44,181 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:44,554 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:45,049 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:45,410 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:41:45,776 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:46,965 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:47,360 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:47,578 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:47,999 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:48,360 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-14 16:41:48,857 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:49,231 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-14 16:41:49,602 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:50,739 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:51,060 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:51,271 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:51,681 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:52,104 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:52,611 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:52,975 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:41:53,333 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:54,471 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:41:54,795 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:41:55,007 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:55,416 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:55,772 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:56,261 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:41:56,633 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:41:56,991 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:41:58,203 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-14 16:41:58,524 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:41:58,741 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:41:59,145 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:41:59,504 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:41:59,983 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:42:00,339 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:42:00,698 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:42:01,830 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:42:02,167 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:42:02,475 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:42:02,916 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:42:03,273 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:42:03,758 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-14 16:42:04,118 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:42:04,482 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:42:05,623 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-14 16:42:05,944 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-14 16:42:06,159 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:42:06,562 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61