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/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:42:29,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:42:29,412 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:42:29,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:42:29,425 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:42:29,426 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:42:29,427 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:42:29,436 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:42:29,437 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:42:29,438 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:42:29,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:42:29,440 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:42:29,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:42:29,441 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:42:29,443 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:42:29,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:42:29,444 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:42:29,446 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:42:29,448 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:42:29,450 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:42:29,451 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:42:29,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:42:29,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:42:29,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:42:29,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:42:29,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:42:29,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:42:29,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:42:29,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:42:29,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:42:29,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:42:29,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 15:42:29,461 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 15:42:29,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 15:42:29,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 15:42:29,463 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 15:42:29,464 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:42:29,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:42:29,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:42:29,475 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:42:29,475 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:42:29,475 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:42:29,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:42:29,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:42:29,476 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:42:29,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:42:29,476 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:42:29,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:42:29,477 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:42:29,477 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:42:29,478 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:42:29,478 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:42:29,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:42:29,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:42:29,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:42:29,545 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:42:29,546 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:42:29,547 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-10 15:42:29,547 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl' [2018-10-10 15:42:29,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:42:29,626 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:42:29,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:42:29,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:42:29,627 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:42:29,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/1) ... [2018-10-10 15:42:29,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:42:29,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:42:29,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:42:29,702 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:42:29,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (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 [2018-10-10 15:42:29,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:42:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:42:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:42:30,454 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:42:30,455 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:42:30 BoogieIcfgContainer [2018-10-10 15:42:30,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:42:30,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:42:30,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:42:30,460 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:42:30,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:29" (1/2) ... [2018-10-10 15:42:30,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b56c50b and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:42:30, skipping insertion in model container [2018-10-10 15:42:30,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:42:30" (2/2) ... [2018-10-10 15:42:30,464 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-10 15:42:30,474 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:42:30,482 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:42:30,500 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:42:30,529 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:42:30,530 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:42:30,530 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:42:30,530 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:42:30,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:42:30,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:42:30,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:42:30,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:42:30,531 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:42:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-10-10 15:42:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 15:42:30,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:30,568 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, 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] [2018-10-10 15:42:30,570 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:30,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash -447702610, now seen corresponding path program 1 times [2018-10-10 15:42:30,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:31,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:42:31,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 15:42:31,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:42:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:42:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:42:31,520 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 12 states. [2018-10-10 15:42:32,152 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:42:32,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:32,707 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-10 15:42:32,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 15:42:32,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-10-10 15:42:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:32,722 INFO L225 Difference]: With dead ends: 94 [2018-10-10 15:42:32,722 INFO L226 Difference]: Without dead ends: 94 [2018-10-10 15:42:32,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:42:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-10 15:42:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2018-10-10 15:42:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-10 15:42:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-10 15:42:32,772 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 69 [2018-10-10 15:42:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:32,773 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-10 15:42:32,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:42:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-10 15:42:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-10 15:42:32,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:32,777 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, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:32,778 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:32,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:32,778 INFO L82 PathProgramCache]: Analyzing trace with hash 861635709, now seen corresponding path program 1 times [2018-10-10 15:42:32,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:33,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:33,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:42:33,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:42:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:42:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:42:33,898 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-10 15:42:36,128 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-10 15:42:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:36,481 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-10 15:42:36,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 15:42:36,483 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-10 15:42:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:36,486 INFO L225 Difference]: With dead ends: 107 [2018-10-10 15:42:36,486 INFO L226 Difference]: Without dead ends: 107 [2018-10-10 15:42:36,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:42:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-10 15:42:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2018-10-10 15:42:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-10 15:42:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-10 15:42:36,501 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 82 [2018-10-10 15:42:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:36,501 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-10 15:42:36,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:42:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-10 15:42:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-10 15:42:36,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:36,505 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2018-10-10 15:42:36,506 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:36,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:36,506 INFO L82 PathProgramCache]: Analyzing trace with hash -499981810, now seen corresponding path program 2 times [2018-10-10 15:42:36,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:37,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:37,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-10 15:42:37,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-10 15:42:37,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-10 15:42:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2018-10-10 15:42:37,861 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 32 states. [2018-10-10 15:42:40,123 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-10 15:42:40,345 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-10 15:42:40,541 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-10 15:42:41,069 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:42:41,273 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:42:41,467 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-10 15:42:41,704 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-10 15:42:42,044 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-10 15:42:42,374 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-10 15:42:42,805 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-10 15:42:43,096 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-10 15:42:43,403 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2018-10-10 15:42:44,347 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:42:44,701 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-10 15:42:44,928 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-10 15:42:45,108 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:42:45,419 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-10 15:42:45,700 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-10 15:42:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:45,778 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-10 15:42:45,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:42:45,779 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 95 [2018-10-10 15:42:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:45,781 INFO L225 Difference]: With dead ends: 120 [2018-10-10 15:42:45,781 INFO L226 Difference]: Without dead ends: 120 [2018-10-10 15:42:45,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=732, Invalid=3824, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:42:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-10 15:42:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2018-10-10 15:42:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-10 15:42:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-10 15:42:45,793 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 95 [2018-10-10 15:42:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:45,794 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-10 15:42:45,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-10 15:42:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-10 15:42:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-10 15:42:45,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:45,796 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2018-10-10 15:42:45,796 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:45,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash -912664547, now seen corresponding path program 3 times [2018-10-10 15:42:45,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:48,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:48,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-10 15:42:48,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-10 15:42:48,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-10 15:42:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1469, Unknown=0, NotChecked=0, Total=1560 [2018-10-10 15:42:48,039 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 40 states. [2018-10-10 15:42:49,705 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-10 15:42:50,251 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-10 15:42:50,431 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-10 15:42:50,680 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:42:50,886 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-10 15:42:51,384 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:42:51,603 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:42:51,923 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-10 15:42:52,186 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2018-10-10 15:42:52,556 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-10 15:42:52,853 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-10 15:42:53,077 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2018-10-10 15:42:53,329 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2018-10-10 15:42:53,626 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2018-10-10 15:42:53,893 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:42:54,150 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-10 15:42:54,510 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:42:54,792 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-10 15:42:55,047 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:42:55,326 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:42:55,582 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-10 15:42:55,800 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:42:56,145 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:42:56,377 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-10 15:42:56,567 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:42:56,807 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-10 15:42:57,142 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-10 15:42:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:57,182 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-10 15:42:57,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-10 15:42:57,183 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 108 [2018-10-10 15:42:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:57,185 INFO L225 Difference]: With dead ends: 133 [2018-10-10 15:42:57,186 INFO L226 Difference]: Without dead ends: 133 [2018-10-10 15:42:57,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=998, Invalid=5808, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:42:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-10 15:42:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2018-10-10 15:42:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-10 15:42:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-10 15:42:57,197 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 108 [2018-10-10 15:42:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:57,197 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-10 15:42:57,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-10 15:42:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-10 15:42:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-10 15:42:57,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:57,202 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 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, 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] [2018-10-10 15:42:57,202 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:57,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:57,204 INFO L82 PathProgramCache]: Analyzing trace with hash -206474642, now seen corresponding path program 4 times [2018-10-10 15:42:57,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:58,007 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2018-10-10 15:42:58,540 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2018-10-10 15:42:58,726 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2018-10-10 15:43:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:00,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:00,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 15:43:00,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 15:43:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 15:43:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2054, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 15:43:00,921 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 47 states. [2018-10-10 15:43:02,406 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:43:02,591 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:43:02,787 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:43:03,102 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:43:03,384 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-10 15:43:04,438 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:43:04,992 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-10 15:43:05,355 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 15:43:05,623 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-10-10 15:43:05,942 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-10 15:43:06,300 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2018-10-10 15:43:06,538 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 15:43:06,719 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-10 15:43:06,950 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-10 15:43:07,364 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 15:43:07,681 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-10 15:43:08,003 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-10 15:43:08,358 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2018-10-10 15:43:08,567 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 15:43:09,019 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:43:09,282 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 15:43:09,650 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-10-10 15:43:09,934 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:43:10,187 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 15:43:10,451 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:43:10,648 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-10 15:43:11,013 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:43:11,733 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:43:12,091 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-10 15:43:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:12,521 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-10 15:43:12,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-10 15:43:12,523 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 121 [2018-10-10 15:43:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:12,524 INFO L225 Difference]: With dead ends: 146 [2018-10-10 15:43:12,524 INFO L226 Difference]: Without dead ends: 146 [2018-10-10 15:43:12,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1251, Invalid=8451, Unknown=0, NotChecked=0, Total=9702 [2018-10-10 15:43:12,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-10 15:43:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2018-10-10 15:43:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-10 15:43:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-10 15:43:12,536 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 121 [2018-10-10 15:43:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:12,536 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-10 15:43:12,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 15:43:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-10 15:43:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-10 15:43:12,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:12,539 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 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, 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] [2018-10-10 15:43:12,539 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:12,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash 158393277, now seen corresponding path program 5 times [2018-10-10 15:43:12,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:14,200 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-10 15:43:14,843 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2018-10-10 15:43:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:16,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:16,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 15:43:16,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 15:43:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 15:43:16,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:43:16,550 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 52 states. [2018-10-10 15:43:17,715 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-10 15:43:19,041 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:43:19,373 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:43:20,273 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 15:43:20,544 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-10 15:43:20,903 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:43:21,419 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 15:43:21,795 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:43:22,250 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2018-10-10 15:43:22,768 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2018-10-10 15:43:23,076 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 15:43:23,329 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:43:23,623 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 15:43:24,049 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:43:24,406 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:43:24,866 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2018-10-10 15:43:25,364 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2018-10-10 15:43:25,914 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-10-10 15:43:26,340 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-10 15:43:27,034 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-10 15:43:27,686 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2018-10-10 15:43:28,240 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2018-10-10 15:43:28,685 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-10 15:43:29,179 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-10 15:43:29,768 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2018-10-10 15:43:30,196 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-10 15:43:30,675 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-10 15:43:31,165 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-10 15:43:31,660 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2018-10-10 15:43:32,070 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-10 15:43:32,602 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2018-10-10 15:43:33,033 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-10 15:43:33,436 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-10 15:43:33,851 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-10 15:43:34,318 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-10 15:43:34,632 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:43:34,911 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 15:43:35,191 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 15:43:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:35,232 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-10 15:43:35,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-10 15:43:35,240 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 134 [2018-10-10 15:43:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:35,241 INFO L225 Difference]: With dead ends: 159 [2018-10-10 15:43:35,241 INFO L226 Difference]: Without dead ends: 159 [2018-10-10 15:43:35,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=1683, Invalid=10089, Unknown=0, NotChecked=0, Total=11772 [2018-10-10 15:43:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-10 15:43:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2018-10-10 15:43:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-10 15:43:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-10 15:43:35,262 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 134 [2018-10-10 15:43:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:35,265 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-10 15:43:35,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 15:43:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-10 15:43:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-10 15:43:35,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:35,268 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 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, 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] [2018-10-10 15:43:35,269 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:35,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash 461523662, now seen corresponding path program 6 times [2018-10-10 15:43:35,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:37,152 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 15:43:37,326 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-10 15:43:37,518 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 15:43:37,665 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 15:43:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:40,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:40,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:43:40,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:43:40,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:43:40,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:43:40,842 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 57 states. [2018-10-10 15:43:43,252 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-10 15:43:43,578 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:43:44,367 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 15:43:44,718 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:43:45,124 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:43:45,536 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:43:46,167 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 15:43:46,643 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:43:47,239 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2018-10-10 15:43:47,920 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2018-10-10 15:43:48,343 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:43:48,840 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:43:49,478 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-10 15:43:50,396 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2018-10-10 15:43:51,088 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2018-10-10 15:43:51,824 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 164 [2018-10-10 15:43:52,683 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 187 [2018-10-10 15:43:53,320 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2018-10-10 15:43:53,833 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-10 15:43:54,503 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2018-10-10 15:43:55,424 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 189 [2018-10-10 15:43:56,232 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 192 [2018-10-10 15:43:56,780 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-10 15:43:57,430 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 191 [2018-10-10 15:43:58,060 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2018-10-10 15:43:58,630 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2018-10-10 15:43:59,271 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-10 15:43:59,893 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-10 15:44:00,629 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 178 [2018-10-10 15:44:01,158 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-10 15:44:01,735 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 177 [2018-10-10 15:44:02,300 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-10 15:44:02,814 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2018-10-10 15:44:03,378 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-10 15:44:03,972 WARN L178 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-10 15:44:04,571 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-10 15:44:05,082 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-10 15:44:05,683 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2018-10-10 15:44:06,219 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2018-10-10 15:44:06,738 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-10 15:44:07,337 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2018-10-10 15:44:07,687 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 15:44:08,003 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 15:44:08,342 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-10 15:44:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:08,392 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-10 15:44:08,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-10 15:44:08,393 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 147 [2018-10-10 15:44:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:08,394 INFO L225 Difference]: With dead ends: 172 [2018-10-10 15:44:08,394 INFO L226 Difference]: Without dead ends: 172 [2018-10-10 15:44:08,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=2001, Invalid=12279, Unknown=0, NotChecked=0, Total=14280 [2018-10-10 15:44:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-10 15:44:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2018-10-10 15:44:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-10 15:44:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-10 15:44:08,408 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 147 [2018-10-10 15:44:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:08,408 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-10 15:44:08,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:44:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-10 15:44:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-10 15:44:08,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:08,411 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 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, 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] [2018-10-10 15:44:08,411 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:08,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash -387274915, now seen corresponding path program 7 times [2018-10-10 15:44:08,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:09,431 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-10 15:44:09,585 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-10 15:44:09,734 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-10 15:44:09,884 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 15:44:10,305 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 15:44:10,651 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 15:44:10,993 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 15:44:11,543 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-10 15:44:11,745 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-10 15:44:12,014 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-10 15:44:12,187 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-10 15:44:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:15,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:15,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-10 15:44:15,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-10 15:44:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-10 15:44:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3635, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:44:15,923 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 62 states. [2018-10-10 15:44:18,608 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-10 15:44:18,991 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:44:19,225 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-10 15:44:19,902 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:44:20,316 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 15:44:20,815 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 15:44:21,343 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:44:22,087 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-10 15:44:22,650 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-10 15:44:23,383 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 179 [2018-10-10 15:44:24,218 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 206 [2018-10-10 15:44:24,727 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 15:44:25,120 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-10 15:44:25,975 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 193 [2018-10-10 15:44:26,697 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 15:44:27,222 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:44:27,966 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 185 [2018-10-10 15:44:28,830 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-10 15:44:29,320 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 15:44:29,706 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 15:44:30,157 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:44:30,840 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 15:44:31,366 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 15:44:31,790 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-10 15:44:32,264 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-10 15:44:32,741 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 15:44:33,118 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:44:33,809 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2018-10-10 15:44:34,734 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2018-10-10 15:44:35,495 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2018-10-10 15:44:35,917 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 15:44:36,424 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:44:36,866 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-10 15:44:37,238 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:44:37,654 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:44:38,284 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 15:44:38,733 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:44:39,115 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:44:39,548 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:44:39,972 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:44:40,320 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:44:41,039 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2018-10-10 15:44:41,709 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 15:44:42,178 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:44:42,564 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:44:42,972 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:44:43,375 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:44:43,720 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:44:44,461 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:44:44,859 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:44:45,210 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:44:45,614 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:44:46,357 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:44:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:46,467 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-10 15:44:46,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-10 15:44:46,467 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 160 [2018-10-10 15:44:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:46,468 INFO L225 Difference]: With dead ends: 185 [2018-10-10 15:44:46,469 INFO L226 Difference]: Without dead ends: 185 [2018-10-10 15:44:46,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2847 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=1846, Invalid=15710, Unknown=0, NotChecked=0, Total=17556 [2018-10-10 15:44:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-10 15:44:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2018-10-10 15:44:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-10 15:44:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-10 15:44:46,476 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 160 [2018-10-10 15:44:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:46,476 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-10 15:44:46,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-10 15:44:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-10 15:44:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-10 15:44:46,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:46,478 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 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, 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] [2018-10-10 15:44:46,479 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:46,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:46,479 INFO L82 PathProgramCache]: Analyzing trace with hash 64711470, now seen corresponding path program 8 times [2018-10-10 15:44:46,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:47,669 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:44:47,940 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:44:48,207 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:44:48,473 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-10 15:44:48,721 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 15:44:48,996 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 15:44:49,195 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 15:44:49,497 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2018-10-10 15:44:49,931 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 15:44:50,135 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 15:44:50,339 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-10 15:44:50,583 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-10 15:44:50,890 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-10 15:44:51,254 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-10 15:44:51,646 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:44:51,967 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:44:52,263 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 15:44:52,564 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 15:44:52,849 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 15:44:53,099 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-10 15:44:53,348 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:44:53,602 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:44:53,847 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:44:54,077 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:44:54,288 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:44:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:58,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:58,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-10 15:44:58,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-10 15:44:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-10 15:44:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:44:58,106 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 68 states. [2018-10-10 15:45:00,991 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-10 15:45:01,396 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-10 15:45:01,750 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:45:02,557 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-10-10 15:45:03,015 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:45:03,498 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-10 15:45:04,092 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-10 15:45:04,995 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-10 15:45:05,691 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-10 15:45:06,558 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 204 [2018-10-10 15:45:07,584 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 236 [2018-10-10 15:45:08,179 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-10 15:45:08,653 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:45:09,547 WARN L178 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 219 [2018-10-10 15:45:10,361 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-10 15:45:10,965 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-10 15:45:11,825 WARN L178 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-10 15:45:12,867 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 249 [2018-10-10 15:45:13,450 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-10 15:45:13,898 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-10-10 15:45:14,747 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2018-10-10 15:45:15,540 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:45:16,107 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 15:45:16,593 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 15:45:17,227 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-10-10 15:45:17,796 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-10 15:45:18,270 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:45:19,143 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2018-10-10 15:45:19,965 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 15:45:20,537 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-10 15:45:21,014 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 15:45:21,564 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 15:45:22,153 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-10 15:45:22,614 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 15:45:23,444 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2018-10-10 15:45:24,232 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-10 15:45:24,788 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:45:25,249 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-10 15:45:25,761 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 15:45:26,268 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:45:26,688 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 15:45:27,527 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2018-10-10 15:45:28,280 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:45:28,797 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 15:45:29,249 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:45:29,734 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 15:45:30,206 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 15:45:30,602 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:45:31,311 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2018-10-10 15:45:32,042 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:45:32,609 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 15:45:33,051 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:45:33,528 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:45:33,988 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:45:34,386 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:45:35,253 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:45:35,695 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:45:36,085 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:45:36,529 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 15:45:37,374 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-10 15:45:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:37,522 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-10 15:45:37,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-10 15:45:37,527 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 173 [2018-10-10 15:45:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:37,528 INFO L225 Difference]: With dead ends: 198 [2018-10-10 15:45:37,529 INFO L226 Difference]: Without dead ends: 198 [2018-10-10 15:45:37,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=2069, Invalid=19101, Unknown=0, NotChecked=0, Total=21170 [2018-10-10 15:45:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-10 15:45:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2018-10-10 15:45:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-10 15:45:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-10 15:45:37,538 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 173 [2018-10-10 15:45:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:37,539 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-10 15:45:37,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-10 15:45:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-10 15:45:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-10 15:45:37,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:37,543 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 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, 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] [2018-10-10 15:45:37,543 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:37,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2054085891, now seen corresponding path program 9 times [2018-10-10 15:45:37,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:39,207 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-10 15:45:39,670 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-10 15:45:40,060 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-10 15:45:40,520 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2018-10-10 15:45:40,917 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-10 15:45:41,371 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-10 15:45:41,760 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-10 15:45:42,264 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-10 15:45:42,892 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-10 15:45:43,296 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-10 15:45:43,697 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-10 15:45:44,107 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-10 15:45:44,538 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2018-10-10 15:45:44,983 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 66 [2018-10-10 15:45:45,411 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-10 15:45:45,843 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-10 15:45:46,271 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2018-10-10 15:45:46,755 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2018-10-10 15:45:47,220 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 57 [2018-10-10 15:45:47,535 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2018-10-10 15:45:47,934 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-10 15:45:48,244 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-10 15:45:48,535 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-10 15:45:48,882 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-10 15:45:49,223 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-10 15:45:50,151 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-10 15:45:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:53,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:53,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-10 15:45:53,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-10 15:45:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-10 15:45:53,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-10 15:45:53,898 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 76 states. [2018-10-10 15:45:57,135 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2018-10-10 15:45:57,619 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2018-10-10 15:45:57,982 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-10 15:45:58,991 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 15:45:59,555 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:46:00,140 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-10 15:46:00,843 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2018-10-10 15:46:01,917 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-10 15:46:02,717 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-10 15:46:03,739 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 239 [2018-10-10 15:46:04,906 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 278 [2018-10-10 15:46:05,625 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2018-10-10 15:46:06,187 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-10 15:46:06,842 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2018-10-10 15:46:07,743 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-10 15:46:08,479 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2018-10-10 15:46:08,972 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-10 15:46:09,522 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2018-10-10 15:46:10,166 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-10 15:46:10,699 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-10 15:46:11,812 WARN L178 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 260 [2018-10-10 15:46:12,966 WARN L178 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2018-10-10 15:46:14,366 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 264 DAG size of output: 264 [2018-10-10 15:46:15,622 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 267 DAG size of output: 267 [2018-10-10 15:46:16,446 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 240 [2018-10-10 15:46:17,436 WARN L178 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 279 [2018-10-10 15:46:18,488 WARN L178 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 276 [2018-10-10 15:46:19,379 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 237 [2018-10-10 15:46:20,492 WARN L178 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-10 15:46:21,926 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-10 15:46:23,194 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-10 15:46:24,176 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-10 15:46:25,180 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 271 [2018-10-10 15:46:26,211 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 270 [2018-10-10 15:46:27,105 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 238 [2018-10-10 15:46:28,141 WARN L178 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 242 [2018-10-10 15:46:29,232 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-10 15:46:30,244 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2018-10-10 15:46:31,076 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 234 [2018-10-10 15:46:32,020 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 261 [2018-10-10 15:46:32,978 WARN L178 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 260 [2018-10-10 15:46:33,864 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 233 [2018-10-10 15:46:34,812 WARN L178 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2018-10-10 15:46:35,784 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-10 15:46:36,760 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-10 15:46:37,609 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-10 15:46:38,530 WARN L178 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 249 [2018-10-10 15:46:39,566 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 248 [2018-10-10 15:46:40,425 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-10 15:46:41,388 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 233 [2018-10-10 15:46:42,407 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-10 15:46:43,414 WARN L178 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-10 15:46:44,302 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2018-10-10 15:46:45,216 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-10 15:46:46,168 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 233 [2018-10-10 15:46:46,988 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-10 15:46:47,872 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-10 15:46:48,786 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-10 15:46:49,760 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-10 15:46:50,557 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 213 [2018-10-10 15:46:51,397 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-10 15:46:52,267 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 219 [2018-10-10 15:46:53,077 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2018-10-10 15:46:53,881 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 212 [2018-10-10 15:46:54,808 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2018-10-10 15:46:55,342 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:46:55,862 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 15:46:56,423 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-10 15:46:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:56,498 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-10 15:46:56,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-10 15:46:56,499 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 186 [2018-10-10 15:46:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:56,501 INFO L225 Difference]: With dead ends: 211 [2018-10-10 15:46:56,502 INFO L226 Difference]: Without dead ends: 211 [2018-10-10 15:46:56,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 72.5s TimeCoverageRelationStatistics Valid=3613, Invalid=22469, Unknown=0, NotChecked=0, Total=26082 [2018-10-10 15:46:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-10 15:46:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2018-10-10 15:46:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-10 15:46:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-10 15:46:56,508 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 186 [2018-10-10 15:46:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:56,508 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-10 15:46:56,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-10 15:46:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-10 15:46:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-10 15:46:56,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:56,510 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 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, 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] [2018-10-10 15:46:56,510 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:56,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1601360782, now seen corresponding path program 10 times [2018-10-10 15:46:56,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:58,242 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-10 15:46:58,730 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-10 15:46:59,219 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-10 15:46:59,806 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 64 [2018-10-10 15:47:00,289 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 15:47:00,758 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 15:47:01,231 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 15:47:01,806 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 67 [2018-10-10 15:47:02,398 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 15:47:02,873 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 15:47:03,346 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-10 15:47:03,807 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-10 15:47:04,392 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-10 15:47:05,038 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2018-10-10 15:47:05,580 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 15:47:06,130 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 15:47:06,662 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 15:47:07,188 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 15:47:07,787 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2018-10-10 15:47:08,229 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-10 15:47:08,655 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 15:47:09,072 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 15:47:09,508 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 15:47:09,970 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 15:47:10,437 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-10 15:47:10,773 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:47:11,088 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 15:47:11,416 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 15:47:11,730 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 15:47:12,036 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 15:47:12,334 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-10 15:47:12,584 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:47:12,832 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:47:13,084 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:47:13,325 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:47:13,569 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:47:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:47:17,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:47:17,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-10 15:47:17,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-10 15:47:17,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-10 15:47:17,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2018-10-10 15:47:17,528 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 81 states. [2018-10-10 15:47:20,930 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:47:21,467 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-10 15:47:21,815 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 15:47:22,794 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:47:23,374 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-10 15:47:24,001 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-10 15:47:24,793 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2018-10-10 15:47:25,938 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2018-10-10 15:47:26,830 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-10 15:47:27,901 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 251 [2018-10-10 15:47:29,196 WARN L178 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 291 [2018-10-10 15:47:29,994 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-10 15:47:30,643 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-10 15:47:31,775 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 264 [2018-10-10 15:47:33,146 WARN L178 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 267 [2018-10-10 15:47:34,343 WARN L178 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-10 15:47:35,744 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 270 DAG size of output: 253 [2018-10-10 15:47:37,321 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 322 DAG size of output: 303 [2018-10-10 15:47:38,505 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 301 [2018-10-10 15:47:39,461 WARN L178 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 251 [2018-10-10 15:47:40,796 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 275 DAG size of output: 267 [2018-10-10 15:47:42,275 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 279 DAG size of output: 272 [2018-10-10 15:47:43,637 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 283 DAG size of output: 275 [2018-10-10 15:47:44,578 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 258 [2018-10-10 15:47:45,763 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 314 DAG size of output: 299 [2018-10-10 15:47:46,976 WARN L178 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 297 [2018-10-10 15:47:47,960 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 256 [2018-10-10 15:47:49,112 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 268 [2018-10-10 15:47:50,313 WARN L178 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 271 [2018-10-10 15:47:51,609 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 282 DAG size of output: 274 [2018-10-10 15:47:52,567 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 251 [2018-10-10 15:47:53,690 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-10 15:47:54,874 WARN L178 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 283 [2018-10-10 15:47:55,905 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 249 [2018-10-10 15:47:57,029 WARN L178 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2018-10-10 15:47:58,158 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 258 [2018-10-10 15:47:59,369 WARN L178 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 261 [2018-10-10 15:48:00,329 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 246 [2018-10-10 15:48:01,454 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 275 [2018-10-10 15:48:02,549 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 273 [2018-10-10 15:48:03,513 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 244 [2018-10-10 15:48:04,595 WARN L178 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 250 [2018-10-10 15:48:05,732 WARN L178 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 253 [2018-10-10 15:48:06,958 WARN L178 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 256 [2018-10-10 15:48:07,908 WARN L178 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 240 [2018-10-10 15:48:08,968 WARN L178 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 263 [2018-10-10 15:48:10,034 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 261 [2018-10-10 15:48:11,020 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-10 15:48:12,147 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 252 [2018-10-10 15:48:13,293 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 255 [2018-10-10 15:48:14,476 WARN L178 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 258 [2018-10-10 15:48:15,431 WARN L178 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-10 15:48:16,546 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 257 [2018-10-10 15:48:17,590 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2018-10-10 15:48:18,529 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 232 [2018-10-10 15:48:19,563 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 238 [2018-10-10 15:48:20,617 WARN L178 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 241 [2018-10-10 15:48:21,756 WARN L178 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 244 [2018-10-10 15:48:22,701 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-10 15:48:23,717 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 243 [2018-10-10 15:48:24,731 WARN L178 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-10 15:48:25,651 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-10 15:48:26,719 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-10 15:48:27,792 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-10 15:48:28,839 WARN L178 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 238 [2018-10-10 15:48:29,817 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 223 [2018-10-10 15:48:30,842 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 229 [2018-10-10 15:48:31,932 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 224 [2018-10-10 15:48:32,921 WARN L178 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-10 15:48:33,981 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-10 15:48:34,646 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 15:48:35,282 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:48:35,955 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 15:48:36,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:48:36,029 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-10 15:48:36,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-10 15:48:36,030 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 199 [2018-10-10 15:48:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:48:36,031 INFO L225 Difference]: With dead ends: 224 [2018-10-10 15:48:36,031 INFO L226 Difference]: Without dead ends: 224 [2018-10-10 15:48:36,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6186 ImplicationChecksByTransitivity, 93.7s TimeCoverageRelationStatistics Valid=4203, Invalid=25209, Unknown=0, NotChecked=0, Total=29412 [2018-10-10 15:48:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-10 15:48:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2018-10-10 15:48:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-10 15:48:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-10 15:48:36,037 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 199 [2018-10-10 15:48:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:48:36,038 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-10 15:48:36,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-10 15:48:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-10 15:48:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-10 15:48:36,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:48:36,039 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 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, 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] [2018-10-10 15:48:36,039 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:48:36,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:48:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash -999401827, now seen corresponding path program 11 times [2018-10-10 15:48:36,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:48:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:48:38,400 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-10 15:48:39,097 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-10 15:48:39,816 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-10 15:48:40,497 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 69 [2018-10-10 15:48:41,152 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-10 15:48:41,853 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-10 15:48:42,543 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-10 15:48:43,410 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 72 [2018-10-10 15:48:44,236 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-10 15:48:44,897 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-10 15:48:45,570 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 64 [2018-10-10 15:48:46,209 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 64 [2018-10-10 15:48:46,999 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 75 [2018-10-10 15:48:47,805 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 77 [2018-10-10 15:48:48,522 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 72 [2018-10-10 15:48:49,237 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 72 [2018-10-10 15:48:49,936 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2018-10-10 15:48:50,660 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2018-10-10 15:48:51,343 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2018-10-10 15:48:51,918 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 69 [2018-10-10 15:48:52,547 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2018-10-10 15:48:53,107 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2018-10-10 15:48:53,644 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2018-10-10 15:48:54,186 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2018-10-10 15:48:54,759 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 62 [2018-10-10 15:48:55,122 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-10 15:48:55,477 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-10 15:48:55,840 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-10 15:48:56,185 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-10 15:48:56,539 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-10 15:48:56,950 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:48:57,298 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:48:57,592 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-10 15:48:57,886 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-10 15:48:58,175 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-10 15:48:58,479 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-10 15:48:58,905 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-10 15:49:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:49:04,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:49:04,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-10 15:49:04,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-10 15:49:04,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-10 15:49:04,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=7052, Unknown=0, NotChecked=0, Total=7482 [2018-10-10 15:49:04,698 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 87 states. [2018-10-10 15:49:06,766 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-10 15:49:09,498 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2018-10-10 15:49:10,131 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 137 [2018-10-10 15:49:10,543 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 15:49:11,819 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 15:49:12,613 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:49:13,425 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-10 15:49:14,393 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-10-10 15:49:15,838 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2018-10-10 15:49:16,904 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2018-10-10 15:49:18,273 WARN L178 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 268 [2018-10-10 15:49:19,793 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 352 DAG size of output: 311 [2018-10-10 15:49:20,752 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-10 15:49:21,517 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2018-10-10 15:49:22,995 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 291 DAG size of output: 284 [2018-10-10 15:49:24,782 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 296 DAG size of output: 287 [2018-10-10 15:49:26,330 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 301 DAG size of output: 290 [2018-10-10 15:49:27,893 WARN L178 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 290 DAG size of output: 273 [2018-10-10 15:49:29,719 WARN L178 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 348 DAG size of output: 325 [2018-10-10 15:49:31,039 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 325 [2018-10-10 15:49:32,117 WARN L178 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2018-10-10 15:49:33,434 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 288 DAG size of output: 280 [2018-10-10 15:49:35,016 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 293 DAG size of output: 283 [2018-10-10 15:49:36,397 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 298 DAG size of output: 286 [2018-10-10 15:49:37,460 WARN L178 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 267 [2018-10-10 15:49:38,775 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 336 DAG size of output: 314 [2018-10-10 15:49:40,103 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 327 DAG size of output: 315 [2018-10-10 15:49:41,160 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 268 [2018-10-10 15:49:42,545 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 305 DAG size of output: 296 [2018-10-10 15:49:44,311 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 310 DAG size of output: 297 [2018-10-10 15:49:45,789 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 315 DAG size of output: 300 [2018-10-10 15:49:46,861 WARN L178 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 266 [2018-10-10 15:49:48,145 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 330 DAG size of output: 306 [2018-10-10 15:49:49,572 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 321 DAG size of output: 309 [2018-10-10 15:49:50,668 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 269 [2018-10-10 15:49:51,958 WARN L178 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 273 [2018-10-10 15:49:53,230 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 289 DAG size of output: 276 [2018-10-10 15:49:54,616 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 294 DAG size of output: 279 [2018-10-10 15:49:55,634 WARN L178 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 261 [2018-10-10 15:49:56,858 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 320 DAG size of output: 296 [2018-10-10 15:49:58,142 WARN L178 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 295 [2018-10-10 15:49:59,264 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 260 [2018-10-10 15:50:00,446 WARN L178 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 273 [2018-10-10 15:50:01,715 WARN L178 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 276 [2018-10-10 15:50:03,041 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 295 DAG size of output: 279 [2018-10-10 15:50:04,133 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 254 [2018-10-10 15:50:05,325 WARN L178 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 282 [2018-10-10 15:50:06,528 WARN L178 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 285 [2018-10-10 15:50:07,588 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 257 [2018-10-10 15:50:08,726 WARN L178 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 261 [2018-10-10 15:50:09,952 WARN L178 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 264 [2018-10-10 15:50:11,211 WARN L178 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 267 [2018-10-10 15:50:12,232 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-10 15:50:13,401 WARN L178 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 272 [2018-10-10 15:50:14,607 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 275 [2018-10-10 15:50:15,652 WARN L178 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 252 [2018-10-10 15:50:16,759 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 256 [2018-10-10 15:50:17,957 WARN L178 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 259 [2018-10-10 15:50:19,187 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 262 [2018-10-10 15:50:20,209 WARN L178 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 243 [2018-10-10 15:50:21,342 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 260 [2018-10-10 15:50:22,500 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 263 [2018-10-10 15:50:23,543 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 246 [2018-10-10 15:50:24,662 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-10 15:50:25,816 WARN L178 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 253 [2018-10-10 15:50:26,989 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 256 [2018-10-10 15:50:28,005 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 239 [2018-10-10 15:50:29,128 WARN L178 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 252 [2018-10-10 15:50:30,252 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 252 [2018-10-10 15:50:31,273 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-10 15:50:32,293 WARN L178 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 243 [2018-10-10 15:50:33,378 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 246 [2018-10-10 15:50:34,480 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 249 [2018-10-10 15:50:35,443 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-10 15:50:36,453 WARN L178 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 238 [2018-10-10 15:50:37,483 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 238 [2018-10-10 15:50:38,485 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 232 [2018-10-10 15:50:39,609 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-10 15:50:40,336 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-10 15:50:40,996 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-10 15:50:41,696 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-10 15:50:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:50:41,789 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-10 15:50:41,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-10 15:50:41,790 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 212 [2018-10-10 15:50:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:50:41,791 INFO L225 Difference]: With dead ends: 237 [2018-10-10 15:50:41,791 INFO L226 Difference]: Without dead ends: 237 [2018-10-10 15:50:41,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 116.6s TimeCoverageRelationStatistics Valid=4610, Invalid=29430, Unknown=0, NotChecked=0, Total=34040 [2018-10-10 15:50:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-10 15:50:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 226. [2018-10-10 15:50:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-10 15:50:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-10 15:50:41,798 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 212 [2018-10-10 15:50:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:50:41,798 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-10 15:50:41,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-10 15:50:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-10 15:50:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-10 15:50:41,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:50:41,800 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 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, 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] [2018-10-10 15:50:41,800 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:50:41,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:50:41,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1233028078, now seen corresponding path program 12 times [2018-10-10 15:50:41,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:50:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:50:44,707 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-10 15:50:45,772 WARN L178 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-10 15:50:46,835 WARN L178 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-10 15:50:47,860 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 75 [2018-10-10 15:50:48,749 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 15:50:49,762 WARN L178 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 15:50:50,828 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 15:50:52,089 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 301 DAG size of output: 78 [2018-10-10 15:50:53,326 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 15:50:54,368 WARN L178 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 15:50:55,420 WARN L178 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-10 15:50:56,429 WARN L178 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-10 15:50:57,591 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 81 [2018-10-10 15:50:58,831 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 301 DAG size of output: 83 [2018-10-10 15:50:59,969 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-10 15:51:01,126 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-10 15:51:02,270 WARN L178 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-10 15:51:03,333 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-10 15:51:04,408 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 77 [2018-10-10 15:51:05,251 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 78 [2018-10-10 15:51:06,062 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 75 [2018-10-10 15:51:06,878 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 75 [2018-10-10 15:51:07,694 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 73 [2018-10-10 15:51:08,583 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-10 15:51:09,463 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 68 [2018-10-10 15:51:10,052 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-10 15:51:10,647 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 15:51:11,241 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 15:51:11,822 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 15:51:12,384 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 15:51:13,016 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2018-10-10 15:51:13,487 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-10 15:51:13,949 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 15:51:14,410 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 15:51:14,865 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 15:51:15,317 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 15:51:15,819 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-10 15:51:16,163 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:51:16,508 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 15:51:16,856 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 15:51:17,196 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 15:51:17,540 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 15:51:17,874 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-10 15:51:18,152 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:51:18,427 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:51:18,702 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:51:18,978 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:51:19,248 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:51:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:51:24,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:51:24,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-10 15:51:24,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-10 15:51:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-10 15:51:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=8110, Unknown=0, NotChecked=0, Total=8556 [2018-10-10 15:51:24,206 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 93 states. [2018-10-10 15:51:28,474 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109