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/cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:30:03,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:30:03,435 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:30:03,452 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:30:03,452 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:30:03,453 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:30:03,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:30:03,456 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:30:03,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:30:03,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:30:03,460 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:30:03,460 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:30:03,461 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:30:03,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:30:03,463 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:30:03,464 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:30:03,465 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:30:03,466 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:30:03,469 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:30:03,470 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:30:03,471 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:30:03,473 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:30:03,475 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:30:03,475 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:30:03,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:30:03,477 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:30:03,477 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:30:03,478 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:30:03,479 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:30:03,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:30:03,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:30:03,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 15:30:03,483 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 15:30:03,483 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 15:30:03,486 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 15:30:03,486 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 15:30:03,487 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 15:30:03,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:30:03,507 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:30:03,508 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:30:03,508 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:30:03,508 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:30:03,508 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:30:03,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:30:03,509 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:30:03,510 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:30:03,510 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:30:03,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:30:03,510 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:30:03,511 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:30:03,511 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:30:03,512 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:30:03,553 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:30:03,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:30:03,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:30:03,576 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:30:03,577 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:30:03,578 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 15:30:03,578 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-10 15:30:03,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:30:03,641 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:30:03,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:30:03,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:30:03,642 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:30:03,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/1) ... [2018-10-10 15:30:03,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:30:03,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:30:03,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:30:03,697 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:30:03,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (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 15:30:03,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:30:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:30:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:30:04,330 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:30:04,331 INFO L202 PluginConnector]: Adding new model cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:30:04 BoogieIcfgContainer [2018-10-10 15:30:04,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:30:04,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:30:04,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:30:04,336 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:30:04,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:30:03" (1/2) ... [2018-10-10 15:30:04,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba2d2ff and model type cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:30:04, skipping insertion in model container [2018-10-10 15:30:04,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:30:04" (2/2) ... [2018-10-10 15:30:04,339 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 15:30:04,349 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:30:04,358 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:30:04,376 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:30:04,406 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:30:04,407 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:30:04,407 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:30:04,407 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:30:04,407 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:30:04,407 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:30:04,408 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:30:04,408 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:30:04,408 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:30:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-10 15:30:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-10 15:30:04,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:04,440 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] [2018-10-10 15:30:04,441 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:04,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:04,448 INFO L82 PathProgramCache]: Analyzing trace with hash -780520305, now seen corresponding path program 1 times [2018-10-10 15:30:04,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:05,441 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 15:30:05,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:30:05,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 15:30:05,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:30:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:30:05,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:30:05,472 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 12 states. [2018-10-10 15:30:06,097 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-10 15:30:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:06,687 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-10 15:30:06,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 15:30:06,694 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-10-10 15:30:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:06,709 INFO L225 Difference]: With dead ends: 91 [2018-10-10 15:30:06,710 INFO L226 Difference]: Without dead ends: 91 [2018-10-10 15:30:06,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:30:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-10 15:30:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-10 15:30:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 15:30:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-10 15:30:06,757 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-10 15:30:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:06,758 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-10 15:30:06,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:30:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-10 15:30:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:30:06,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:06,762 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] [2018-10-10 15:30:06,762 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:06,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:06,763 INFO L82 PathProgramCache]: Analyzing trace with hash -361483911, now seen corresponding path program 1 times [2018-10-10 15:30:06,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:07,255 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 15:30:07,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:07,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-10 15:30:07,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-10 15:30:07,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-10 15:30:07,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:30:07,260 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 14 states. [2018-10-10 15:30:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:08,835 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-10 15:30:08,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-10 15:30:08,836 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2018-10-10 15:30:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:08,839 INFO L225 Difference]: With dead ends: 104 [2018-10-10 15:30:08,839 INFO L226 Difference]: Without dead ends: 104 [2018-10-10 15:30:08,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2018-10-10 15:30:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-10 15:30:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-10 15:30:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-10 15:30:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-10 15:30:08,851 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-10 15:30:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:08,852 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-10 15:30:08,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-10 15:30:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-10 15:30:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-10 15:30:08,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:08,855 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] [2018-10-10 15:30:08,856 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:08,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:08,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1253179185, now seen corresponding path program 2 times [2018-10-10 15:30:08,857 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:09,742 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 15:30:09,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:09,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-10 15:30:09,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-10 15:30:09,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-10 15:30:09,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2018-10-10 15:30:09,744 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 24 states. [2018-10-10 15:30:11,256 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-10 15:30:11,716 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-10 15:30:11,948 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-10 15:30:12,155 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 15:30:12,830 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-10-10 15:30:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:13,845 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-10 15:30:13,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-10 15:30:13,851 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2018-10-10 15:30:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:13,853 INFO L225 Difference]: With dead ends: 117 [2018-10-10 15:30:13,853 INFO L226 Difference]: Without dead ends: 117 [2018-10-10 15:30:13,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=582, Invalid=1674, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:30:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-10 15:30:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-10 15:30:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-10 15:30:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-10 15:30:13,876 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-10 15:30:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:13,877 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-10 15:30:13,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-10 15:30:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-10 15:30:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-10 15:30:13,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:13,885 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] [2018-10-10 15:30:13,885 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:13,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:13,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1235111225, now seen corresponding path program 3 times [2018-10-10 15:30:13,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:15,060 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 15:30:15,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:15,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-10 15:30:15,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-10 15:30:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-10 15:30:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2018-10-10 15:30:15,062 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 30 states. [2018-10-10 15:30:16,905 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-10 15:30:17,134 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:30:17,382 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-10 15:30:17,627 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:30:17,964 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-10 15:30:18,145 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-10 15:30:18,584 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2018-10-10 15:30:19,443 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:30:19,796 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-10-10 15:30:20,169 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2018-10-10 15:30:20,453 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-10 15:30:21,536 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 15:30:21,805 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-10 15:30:22,095 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-10 15:30:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:22,399 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-10 15:30:22,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-10 15:30:22,403 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 105 [2018-10-10 15:30:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:22,405 INFO L225 Difference]: With dead ends: 130 [2018-10-10 15:30:22,405 INFO L226 Difference]: Without dead ends: 130 [2018-10-10 15:30:22,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=810, Invalid=2850, Unknown=0, NotChecked=0, Total=3660 [2018-10-10 15:30:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-10 15:30:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-10 15:30:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-10 15:30:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-10 15:30:22,421 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-10 15:30:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:22,422 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-10 15:30:22,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-10 15:30:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-10 15:30:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-10 15:30:22,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:22,426 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] [2018-10-10 15:30:22,427 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:22,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1795228401, now seen corresponding path program 4 times [2018-10-10 15:30:22,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:22,998 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-10 15:30:24,554 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 15:30:24,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:24,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-10 15:30:24,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-10 15:30:24,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-10 15:30:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1179, Unknown=0, NotChecked=0, Total=1260 [2018-10-10 15:30:24,556 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 36 states. [2018-10-10 15:30:26,199 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:30:26,613 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-10-10 15:30:26,918 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 15:30:27,194 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-10 15:30:27,389 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:30:27,617 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-10 15:30:27,848 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:30:28,034 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-10 15:30:28,400 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-10 15:30:28,728 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-10 15:30:28,986 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:30:29,396 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2018-10-10 15:30:29,772 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 118 [2018-10-10 15:30:29,998 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 15:30:30,174 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:30:30,499 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2018-10-10 15:30:30,813 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 15:30:31,063 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 15:30:31,567 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-10 15:30:31,778 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:30:32,002 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:30:32,187 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-10 15:30:32,609 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:30:32,800 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:30:32,959 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:30:33,152 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:30:33,503 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 15:30:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:33,558 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-10 15:30:33,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:30:33,559 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 118 [2018-10-10 15:30:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:33,562 INFO L225 Difference]: With dead ends: 143 [2018-10-10 15:30:33,562 INFO L226 Difference]: Without dead ends: 143 [2018-10-10 15:30:33,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1040, Invalid=4362, Unknown=0, NotChecked=0, Total=5402 [2018-10-10 15:30:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-10 15:30:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-10 15:30:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-10 15:30:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-10 15:30:33,572 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-10 15:30:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:33,573 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-10 15:30:33,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-10 15:30:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-10 15:30:33,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-10 15:30:33,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:33,576 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] [2018-10-10 15:30:33,576 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:33,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:33,576 INFO L82 PathProgramCache]: Analyzing trace with hash 836319481, now seen corresponding path program 5 times [2018-10-10 15:30:33,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:36,294 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 15:30:36,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:36,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-10 15:30:36,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-10 15:30:36,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-10 15:30:36,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1756, Unknown=0, NotChecked=0, Total=1892 [2018-10-10 15:30:36,296 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 44 states. [2018-10-10 15:30:37,975 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:30:38,206 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:30:38,473 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 15:30:38,869 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-10-10 15:30:39,160 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 15:30:39,410 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 15:30:39,691 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:30:39,979 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-10 15:30:40,203 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 15:30:40,462 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-10 15:30:40,850 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 15:30:41,126 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-10 15:30:41,564 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 125 [2018-10-10 15:30:42,045 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 146 [2018-10-10 15:30:42,505 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 144 [2018-10-10 15:30:42,901 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2018-10-10 15:30:43,363 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-10 15:30:44,150 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 136 [2018-10-10 15:30:44,695 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-10 15:30:45,076 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2018-10-10 15:30:45,525 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 135 [2018-10-10 15:30:45,955 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-10 15:30:46,317 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2018-10-10 15:30:46,823 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2018-10-10 15:30:47,283 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2018-10-10 15:30:47,749 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-10 15:30:48,095 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 115 [2018-10-10 15:30:48,552 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2018-10-10 15:30:48,932 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2018-10-10 15:30:49,265 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2018-10-10 15:30:49,618 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2018-10-10 15:30:50,038 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-10 15:30:50,308 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:30:50,710 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 15:30:50,981 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-10 15:30:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:51,017 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-10 15:30:51,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-10 15:30:51,019 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 131 [2018-10-10 15:30:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:51,021 INFO L225 Difference]: With dead ends: 156 [2018-10-10 15:30:51,021 INFO L226 Difference]: Without dead ends: 156 [2018-10-10 15:30:51,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1553, Invalid=6279, Unknown=0, NotChecked=0, Total=7832 [2018-10-10 15:30:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-10 15:30:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-10 15:30:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-10 15:30:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-10 15:30:51,029 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-10 15:30:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:51,030 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-10 15:30:51,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-10 15:30:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-10 15:30:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-10 15:30:51,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:51,033 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] [2018-10-10 15:30:51,033 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:51,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1500588367, now seen corresponding path program 6 times [2018-10-10 15:30:51,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:53,366 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:30:53,518 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-10 15:30:55,856 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 15:30:55,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:55,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-10 15:30:55,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-10 15:30:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-10 15:30:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2204, Unknown=0, NotChecked=0, Total=2352 [2018-10-10 15:30:55,858 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 49 states. [2018-10-10 15:30:57,896 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 15:30:58,188 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-10 15:30:58,509 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 15:30:59,019 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 15:30:59,599 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:30:59,900 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:31:00,261 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 15:31:00,612 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-10 15:31:00,923 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 15:31:01,472 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 156 [2018-10-10 15:31:02,299 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-10 15:31:02,927 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 162 [2018-10-10 15:31:03,775 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 145 [2018-10-10 15:31:04,327 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 172 [2018-10-10 15:31:04,881 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-10 15:31:05,333 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2018-10-10 15:31:06,002 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-10 15:31:06,775 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2018-10-10 15:31:07,553 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2018-10-10 15:31:08,039 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2018-10-10 15:31:08,623 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2018-10-10 15:31:09,171 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2018-10-10 15:31:09,621 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 147 [2018-10-10 15:31:10,191 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2018-10-10 15:31:10,753 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 156 [2018-10-10 15:31:11,319 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2018-10-10 15:31:11,767 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-10 15:31:12,338 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 158 [2018-10-10 15:31:12,833 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2018-10-10 15:31:13,254 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-10 15:31:13,733 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-10 15:31:14,241 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-10 15:31:14,778 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 151 [2018-10-10 15:31:15,226 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 138 [2018-10-10 15:31:15,696 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2018-10-10 15:31:16,139 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-10 15:31:16,565 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-10 15:31:17,088 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-10 15:31:17,459 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-10 15:31:17,716 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 15:31:18,011 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 15:31:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:18,054 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-10 15:31:18,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-10 15:31:18,054 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 144 [2018-10-10 15:31:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:18,056 INFO L225 Difference]: With dead ends: 169 [2018-10-10 15:31:18,056 INFO L226 Difference]: Without dead ends: 169 [2018-10-10 15:31:18,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=1877, Invalid=8023, Unknown=0, NotChecked=0, Total=9900 [2018-10-10 15:31:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-10 15:31:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-10 15:31:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-10 15:31:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-10 15:31:18,063 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-10 15:31:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:18,064 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-10 15:31:18,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-10 15:31:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-10 15:31:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-10 15:31:18,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:31:18,068 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] [2018-10-10 15:31:18,068 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:31:18,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:31:18,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1287713977, now seen corresponding path program 7 times [2018-10-10 15:31:18,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:31:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:31:19,738 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2018-10-10 15:31:19,916 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2018-10-10 15:31:23,713 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 15:31:23,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:31:23,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-10 15:31:23,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-10 15:31:23,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-10 15:31:23,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2733, Unknown=0, NotChecked=0, Total=2862 [2018-10-10 15:31:23,716 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 54 states. [2018-10-10 15:31:25,595 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:31:26,071 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-10 15:31:26,461 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 15:31:26,846 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:31:27,444 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 15:31:27,920 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 15:31:28,276 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:31:28,687 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 15:31:29,110 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 15:31:29,441 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:31:30,056 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-10 15:31:30,647 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:31:31,075 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 15:31:31,673 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 164 [2018-10-10 15:31:32,422 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-10 15:31:32,935 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:31:33,257 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 15:31:33,869 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 167 [2018-10-10 15:31:34,670 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-10 15:31:35,076 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-10 15:31:35,418 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:31:35,829 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:31:36,238 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:31:36,553 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:31:37,134 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 166 [2018-10-10 15:31:37,722 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:31:38,181 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 15:31:38,518 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 15:31:38,899 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 15:31:39,291 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:31:39,597 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 15:31:39,941 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:31:40,474 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:31:40,850 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 15:31:41,179 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:31:41,532 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:31:41,895 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 15:31:42,185 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:31:42,711 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 [2018-10-10 15:31:43,294 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 15:31:43,646 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 15:31:43,959 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 15:31:44,285 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:31:44,621 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:31:44,908 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 15:31:45,475 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:31:45,813 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:31:46,106 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 15:31:46,441 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-10 15:31:47,068 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:31:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:47,161 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-10 15:31:47,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-10 15:31:47,162 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 157 [2018-10-10 15:31:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:47,164 INFO L225 Difference]: With dead ends: 182 [2018-10-10 15:31:47,164 INFO L226 Difference]: Without dead ends: 182 [2018-10-10 15:31:47,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=1730, Invalid=10926, Unknown=0, NotChecked=0, Total=12656 [2018-10-10 15:31:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-10 15:31:47,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-10 15:31:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-10 15:31:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-10 15:31:47,173 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-10 15:31:47,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:47,173 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-10 15:31:47,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-10 15:31:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-10 15:31:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-10 15:31:47,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:31:47,176 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] [2018-10-10 15:31:47,177 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:31:47,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:31:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash -695695985, now seen corresponding path program 8 times [2018-10-10 15:31:47,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:31:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:31:48,116 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-10 15:31:48,454 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:31:48,659 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:31:48,880 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:31:49,104 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:31:49,551 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:31:49,771 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:31:49,992 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-10 15:31:50,216 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-10 15:31:50,498 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2018-10-10 15:31:50,836 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2018-10-10 15:31:51,113 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:31:51,389 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:31:51,649 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:31:51,925 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:31:52,198 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-10 15:31:52,414 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-10 15:31:52,659 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-10 15:31:52,895 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-10 15:31:53,154 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:31:53,559 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:31:53,785 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-10-10 15:31:53,969 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-10 15:31:54,156 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:31:54,339 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:31:56,997 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 15:31:56,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:31:56,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-10 15:31:56,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-10 15:31:56,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-10 15:31:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=3395, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:31:57,000 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 60 states. [2018-10-10 15:31:59,225 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 15:31:59,607 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-10 15:32:00,024 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 15:32:00,504 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-10 15:32:01,213 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-10 15:32:01,726 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-10 15:32:02,143 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-10 15:32:02,640 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:32:03,196 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:32:03,619 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:32:04,385 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2018-10-10 15:32:05,124 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 15:32:05,632 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:32:06,354 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 187 [2018-10-10 15:32:07,186 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 225 [2018-10-10 15:32:07,691 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 15:32:08,061 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:32:08,582 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:32:09,285 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:32:09,777 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 15:32:10,188 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 15:32:10,672 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 15:32:11,151 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:32:11,515 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-10 15:32:12,235 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2018-10-10 15:32:12,945 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 15:32:13,436 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 15:32:13,893 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 15:32:14,353 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:32:14,822 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 15:32:15,184 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-10 15:32:15,618 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:32:16,298 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 15:32:16,780 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:32:17,174 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 15:32:17,626 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-10 15:32:18,060 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:32:18,409 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 15:32:19,094 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-10 15:32:19,729 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:32:20,170 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 15:32:20,539 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-10 15:32:20,945 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-10 15:32:21,344 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 15:32:21,671 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:32:22,063 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:32:22,697 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 15:32:23,108 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:32:23,483 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:32:23,898 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:32:24,302 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:32:24,624 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:32:25,298 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:32:25,681 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:32:26,005 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:32:26,385 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 15:32:27,124 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 15:32:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:27,228 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-10 15:32:27,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-10 15:32:27,229 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 170 [2018-10-10 15:32:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:27,231 INFO L225 Difference]: With dead ends: 195 [2018-10-10 15:32:27,231 INFO L226 Difference]: Without dead ends: 195 [2018-10-10 15:32:27,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=1960, Invalid=13790, Unknown=0, NotChecked=0, Total=15750 [2018-10-10 15:32:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-10 15:32:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-10 15:32:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-10 15:32:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-10 15:32:27,240 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-10 15:32:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:27,241 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-10 15:32:27,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-10 15:32:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-10 15:32:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-10 15:32:27,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:27,243 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] [2018-10-10 15:32:27,243 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:27,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash 955351161, now seen corresponding path program 9 times [2018-10-10 15:32:27,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:28,396 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-10 15:32:28,691 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:32:28,963 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:32:29,246 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:32:29,493 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-10 15:32:29,735 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:32:29,981 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:32:30,240 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-10 15:32:30,484 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-10 15:32:30,770 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:32:31,084 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 62 [2018-10-10 15:32:31,361 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:32:31,645 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:32:31,924 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 15:32:32,218 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 15:32:32,549 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-10 15:32:32,775 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 15:32:32,998 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:32:33,224 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:32:33,448 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 15:32:33,667 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 15:32:33,930 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-10 15:32:34,137 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-10 15:32:34,372 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-10 15:32:37,850 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 15:32:37,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:37,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-10 15:32:37,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-10 15:32:37,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-10 15:32:37,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4172, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:32:37,852 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 68 states. [2018-10-10 15:32:40,149 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 15:32:40,580 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:32:41,034 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:32:41,538 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:32:42,295 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-10 15:32:42,874 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-10 15:32:43,350 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 15:32:43,903 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 15:32:44,573 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2018-10-10 15:32:45,025 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 15:32:45,523 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-10 15:32:46,218 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 15:32:46,737 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-10 15:32:47,455 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2018-10-10 15:32:48,277 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 247 [2018-10-10 15:32:49,144 WARN L178 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-10 15:32:49,943 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-10 15:32:50,787 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 211 [2018-10-10 15:32:51,801 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2018-10-10 15:32:52,729 WARN L178 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-10 15:32:53,418 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-10 15:32:54,214 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 242 [2018-10-10 15:32:55,175 WARN L178 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 241 [2018-10-10 15:32:56,047 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 202 [2018-10-10 15:32:56,934 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-10 15:32:57,884 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-10 15:32:58,862 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2018-10-10 15:32:59,520 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-10 15:33:00,377 WARN L178 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-10 15:33:01,198 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-10 15:33:01,895 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2018-10-10 15:33:02,648 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-10 15:33:03,432 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 202 [2018-10-10 15:33:04,250 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-10 15:33:04,962 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2018-10-10 15:33:05,712 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 218 [2018-10-10 15:33:06,493 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-10 15:33:07,176 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2018-10-10 15:33:07,929 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-10 15:33:08,752 WARN L178 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-10 15:33:09,561 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-10 15:33:10,321 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-10 15:33:11,055 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 206 [2018-10-10 15:33:11,814 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-10 15:33:12,489 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2018-10-10 15:33:13,198 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-10 15:33:13,992 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2018-10-10 15:33:14,832 WARN L178 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-10 15:33:15,608 WARN L178 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 177 [2018-10-10 15:33:16,329 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 190 [2018-10-10 15:33:17,056 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-10 15:33:17,716 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2018-10-10 15:33:18,407 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-10 15:33:19,113 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2018-10-10 15:33:19,825 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 186 [2018-10-10 15:33:20,537 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 170 [2018-10-10 15:33:21,199 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176 [2018-10-10 15:33:21,874 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 176 [2018-10-10 15:33:22,518 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2018-10-10 15:33:23,175 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2018-10-10 15:33:23,939 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 176 [2018-10-10 15:33:24,388 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 15:33:24,811 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:33:25,296 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:33:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:25,357 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-10 15:33:25,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-10 15:33:25,358 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 183 [2018-10-10 15:33:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:25,360 INFO L225 Difference]: With dead ends: 208 [2018-10-10 15:33:25,360 INFO L226 Difference]: Without dead ends: 208 [2018-10-10 15:33:25,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3756 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=3639, Invalid=16101, Unknown=0, NotChecked=0, Total=19740 [2018-10-10 15:33:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-10 15:33:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-10 15:33:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-10 15:33:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-10 15:33:25,366 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-10 15:33:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:25,366 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-10 15:33:25,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-10 15:33:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-10 15:33:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-10 15:33:25,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:25,368 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] [2018-10-10 15:33:25,369 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:25,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:25,369 INFO L82 PathProgramCache]: Analyzing trace with hash 187240911, now seen corresponding path program 10 times [2018-10-10 15:33:25,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:26,912 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 15:33:27,328 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:33:27,759 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:33:28,199 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:33:28,666 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:33:29,100 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:33:29,543 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:33:29,969 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-10 15:33:30,461 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-10 15:33:30,979 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 15:33:31,490 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-10 15:33:31,960 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:33:32,441 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:33:32,922 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:33:33,410 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:33:33,933 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 15:33:34,315 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 15:33:34,696 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:33:35,084 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:33:35,516 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:33:35,969 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:33:36,351 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 15:33:36,627 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:33:36,908 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:33:37,186 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:33:37,460 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:33:37,741 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:33:38,020 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 15:33:38,248 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 15:33:38,470 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:33:38,691 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:33:38,924 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 15:33:39,135 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 15:33:39,357 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 15:33:42,732 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 15:33:42,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:42,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-10 15:33:42,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-10 15:33:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-10 15:33:42,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=4860, Unknown=0, NotChecked=0, Total=5256 [2018-10-10 15:33:42,734 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 73 states. [2018-10-10 15:33:44,670 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 15:33:45,106 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 15:33:45,627 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-10 15:33:46,280 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-10 15:33:47,028 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-10 15:33:47,669 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-10 15:33:48,181 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-10 15:33:48,803 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-10 15:33:49,430 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2018-10-10 15:33:49,954 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-10 15:33:50,928 WARN L178 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 235 [2018-10-10 15:33:52,101 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 238 [2018-10-10 15:33:53,185 WARN L178 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-10 15:33:54,325 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 224 [2018-10-10 15:33:55,678 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 293 DAG size of output: 270 [2018-10-10 15:33:56,747 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-10 15:33:57,555 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 218 [2018-10-10 15:33:58,593 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 238 [2018-10-10 15:33:59,829 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 243 [2018-10-10 15:34:01,017 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2018-10-10 15:34:01,840 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 229 [2018-10-10 15:34:02,795 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 274 [2018-10-10 15:34:03,827 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-10 15:34:04,691 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-10 15:34:05,733 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 243 [2018-10-10 15:34:06,869 WARN L178 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2018-10-10 15:34:07,954 WARN L178 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 249 [2018-10-10 15:34:08,716 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 222 [2018-10-10 15:34:09,635 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 260 [2018-10-10 15:34:10,549 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 254 [2018-10-10 15:34:11,373 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 216 [2018-10-10 15:34:12,326 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 225 [2018-10-10 15:34:13,285 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 228 [2018-10-10 15:34:14,297 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 231 [2018-10-10 15:34:15,068 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-10 15:34:15,941 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 250 [2018-10-10 15:34:16,936 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 248 [2018-10-10 15:34:17,702 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2018-10-10 15:34:18,596 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 225 [2018-10-10 15:34:19,571 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 228 [2018-10-10 15:34:20,585 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 231 [2018-10-10 15:34:21,358 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-10 15:34:22,296 WARN L178 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 238 [2018-10-10 15:34:23,191 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-10 15:34:23,949 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2018-10-10 15:34:24,843 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-10 15:34:25,826 WARN L178 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 221 [2018-10-10 15:34:26,891 WARN L178 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 224 [2018-10-10 15:34:27,671 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 205 [2018-10-10 15:34:28,532 WARN L178 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 226 [2018-10-10 15:34:29,391 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 220 [2018-10-10 15:34:30,158 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 199 [2018-10-10 15:34:30,982 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 208 [2018-10-10 15:34:31,892 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-10 15:34:32,804 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 214 [2018-10-10 15:34:33,556 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2018-10-10 15:34:34,371 WARN L178 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 214 [2018-10-10 15:34:35,185 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-10 15:34:35,931 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2018-10-10 15:34:36,735 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 202 [2018-10-10 15:34:37,641 WARN L178 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2018-10-10 15:34:38,478 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2018-10-10 15:34:39,246 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-10 15:34:40,025 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 200 [2018-10-10 15:34:40,798 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 195 [2018-10-10 15:34:41,524 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2018-10-10 15:34:42,405 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-10 15:34:42,898 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 15:34:43,380 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:34:43,900 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:34:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:43,939 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-10 15:34:43,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-10 15:34:43,940 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 196 [2018-10-10 15:34:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:43,942 INFO L225 Difference]: With dead ends: 221 [2018-10-10 15:34:43,942 INFO L226 Difference]: Without dead ends: 221 [2018-10-10 15:34:43,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=4107, Invalid=18845, Unknown=0, NotChecked=0, Total=22952 [2018-10-10 15:34:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-10 15:34:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-10 15:34:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-10 15:34:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-10 15:34:43,948 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-10 15:34:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:43,949 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-10 15:34:43,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-10 15:34:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-10 15:34:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-10 15:34:43,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:43,950 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] [2018-10-10 15:34:43,951 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:43,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:43,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1241963577, now seen corresponding path program 11 times [2018-10-10 15:34:43,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:46,250 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-10 15:34:46,855 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:34:47,567 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:34:48,202 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:34:48,815 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-10 15:34:49,456 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:34:50,097 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:34:50,730 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-10 15:34:51,389 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-10 15:34:52,113 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-10 15:34:52,956 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-10 15:34:53,666 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 15:34:54,382 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 15:34:55,107 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-10 15:34:55,808 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-10 15:34:56,491 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-10 15:34:57,037 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-10 15:34:57,653 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 15:34:58,196 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 15:34:58,730 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 15:34:59,256 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 15:34:59,787 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-10 15:35:00,110 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:35:00,427 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:35:00,751 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:35:01,075 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 15:35:01,390 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 15:35:01,753 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-10 15:35:02,012 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 15:35:02,257 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:35:02,552 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:35:02,853 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 15:35:03,113 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 15:35:03,404 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-10 15:35:08,346 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 15:35:08,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:08,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-10 15:35:08,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-10 15:35:08,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-10 15:35:08,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=5750, Unknown=0, NotChecked=0, Total=6162 [2018-10-10 15:35:08,347 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 79 states. [2018-10-10 15:35:11,128 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:35:11,692 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-10 15:35:12,316 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-10 15:35:13,064 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-10 15:35:14,078 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-10 15:35:14,827 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-10 15:35:15,450 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-10 15:35:16,196 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2018-10-10 15:35:16,972 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-10 15:35:17,558 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-10 15:35:18,764 WARN L178 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 251 [2018-10-10 15:35:20,171 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 254 [2018-10-10 15:35:21,386 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 270 DAG size of output: 257 [2018-10-10 15:35:22,286 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 243 [2018-10-10 15:35:23,428 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 299 [2018-10-10 15:35:24,581 WARN L178 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 296 [2018-10-10 15:35:25,478 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 240 [2018-10-10 15:35:26,555 WARN L178 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 248 [2018-10-10 15:35:27,903 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 251 [2018-10-10 15:35:29,198 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 267 DAG size of output: 254 [2018-10-10 15:35:30,094 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 242 [2018-10-10 15:35:31,178 WARN L178 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 292 [2018-10-10 15:35:32,342 WARN L178 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 285 [2018-10-10 15:35:33,294 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-10 15:35:34,524 WARN L178 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 270 [2018-10-10 15:35:36,024 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 284 DAG size of output: 271 [2018-10-10 15:35:37,334 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 289 DAG size of output: 274 [2018-10-10 15:35:38,284 WARN L178 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-10 15:35:39,452 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 285 [2018-10-10 15:35:40,579 WARN L178 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 280 [2018-10-10 15:35:41,474 WARN L178 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-10 15:35:42,538 WARN L178 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 242 [2018-10-10 15:35:43,712 WARN L178 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 245 [2018-10-10 15:35:44,886 WARN L178 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 248 [2018-10-10 15:35:45,755 WARN L178 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 237 [2018-10-10 15:35:46,795 WARN L178 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 276 [2018-10-10 15:35:47,859 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-10 15:35:48,827 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 231 [2018-10-10 15:35:49,945 WARN L178 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-10 15:35:51,098 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 251 [2018-10-10 15:35:52,297 WARN L178 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 254 [2018-10-10 15:35:53,158 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-10 15:35:54,257 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 260 [2018-10-10 15:35:55,320 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 255 [2018-10-10 15:35:56,205 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-10 15:35:57,175 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 230 [2018-10-10 15:35:58,213 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 233 [2018-10-10 15:35:59,362 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 236 [2018-10-10 15:36:00,239 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 224 [2018-10-10 15:36:01,242 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 251 [2018-10-10 15:36:02,240 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2018-10-10 15:36:03,106 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-10 15:36:04,185 WARN L178 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 231 [2018-10-10 15:36:05,238 WARN L178 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 232 [2018-10-10 15:36:06,318 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 235 [2018-10-10 15:36:07,194 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 218 [2018-10-10 15:36:08,211 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-10 15:36:09,227 WARN L178 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 234 [2018-10-10 15:36:10,093 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 213 [2018-10-10 15:36:11,034 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 219 [2018-10-10 15:36:12,008 WARN L178 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 224 [2018-10-10 15:36:13,014 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 227 [2018-10-10 15:36:13,859 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-10 15:36:14,877 WARN L178 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 224 [2018-10-10 15:36:15,795 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 218 [2018-10-10 15:36:16,629 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2018-10-10 15:36:17,484 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2018-10-10 15:36:18,414 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 212 [2018-10-10 15:36:19,338 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 215 [2018-10-10 15:36:20,177 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-10 15:36:21,021 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2018-10-10 15:36:21,886 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2018-10-10 15:36:22,695 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-10 15:36:23,609 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-10 15:36:24,187 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-10 15:36:24,794 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 15:36:25,388 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 15:36:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:25,466 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-10 15:36:25,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-10 15:36:25,467 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 209 [2018-10-10 15:36:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:25,468 INFO L225 Difference]: With dead ends: 234 [2018-10-10 15:36:25,468 INFO L226 Difference]: Without dead ends: 234 [2018-10-10 15:36:25,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5393 ImplicationChecksByTransitivity, 95.2s TimeCoverageRelationStatistics Valid=4521, Invalid=22539, Unknown=0, NotChecked=0, Total=27060 [2018-10-10 15:36:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-10 15:36:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-10 15:36:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-10 15:36:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-10 15:36:25,473 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-10 15:36:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:25,474 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-10 15:36:25,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-10 15:36:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-10 15:36:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-10 15:36:25,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:25,475 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] [2018-10-10 15:36:25,476 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:25,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1630981647, now seen corresponding path program 12 times [2018-10-10 15:36:25,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:28,049 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 76 [2018-10-10 15:36:29,040 WARN L178 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:36:30,143 WARN L178 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:36:31,244 WARN L178 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:36:32,397 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 391 DAG size of output: 74 [2018-10-10 15:36:33,532 WARN L178 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:36:34,735 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:36:35,895 WARN L178 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-10 15:36:36,898 WARN L178 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-10 15:36:38,113 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-10 15:36:39,397 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 411 DAG size of output: 82 [2018-10-10 15:36:40,711 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-10 15:36:41,940 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-10 15:36:43,151 WARN L178 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-10 15:36:44,266 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-10 15:36:45,593 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 293 DAG size of output: 70 [2018-10-10 15:36:46,519 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 74 [2018-10-10 15:36:47,444 WARN L178 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-10 15:36:48,360 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-10 15:36:49,271 WARN L178 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-10 15:36:50,245 WARN L178 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-10 15:36:51,152 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-10 15:36:51,689 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 15:36:52,202 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:36:52,735 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:36:53,263 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:36:53,798 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:36:54,355 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 15:36:54,780 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 15:36:55,256 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:36:55,689 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:36:56,104 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:36:56,527 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:36:56,954 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 15:36:57,267 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:36:57,569 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:36:57,881 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:36:58,174 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:36:58,492 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:36:58,799 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 15:36:59,059 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 15:36:59,306 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:36:59,553 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:36:59,802 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 15:37:00,042 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 15:37:00,355 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 15:37:00,632 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:37:04,621 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 15:37:04,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:37:04,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-10 15:37:04,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-10 15:37:04,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-10 15:37:04,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=6712, Unknown=0, NotChecked=0, Total=7140 [2018-10-10 15:37:04,623 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 85 states. [2018-10-10 15:37:07,762 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:37:08,197 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:37:08,871 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:37:09,599 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-10 15:37:10,375 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2018-10-10 15:37:11,629 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-10 15:37:12,571 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2018-10-10 15:37:13,363 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-10 15:37:14,319 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2018-10-10 15:37:15,280 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2018-10-10 15:37:16,066 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-10 15:37:17,445 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-10 15:37:19,205 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 283 DAG size of output: 273 [2018-10-10 15:37:20,731 WARN L178 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 288 DAG size of output: 276 [2018-10-10 15:37:21,855 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 263 [2018-10-10 15:37:23,168 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 343 DAG size of output: 323 [2018-10-10 15:37:24,602 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 327 DAG size of output: 317 [2018-10-10 15:37:25,725 WARN L178 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-10 15:37:27,128 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 280 DAG size of output: 267 [2018-10-10 15:37:28,801 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 286 DAG size of output: 272 [2018-10-10 15:37:30,268 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 292 DAG size of output: 275 [2018-10-10 15:37:31,391 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 253 [2018-10-10 15:37:32,680 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 329 DAG size of output: 306 [2018-10-10 15:37:34,119 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 321 DAG size of output: 305 [2018-10-10 15:37:35,187 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 252 [2018-10-10 15:37:36,616 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 296 DAG size of output: 282 [2018-10-10 15:37:38,309 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 302 DAG size of output: 287 [2018-10-10 15:37:39,810 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 308 DAG size of output: 290 [2018-10-10 15:37:40,870 WARN L178 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-10 15:37:42,246 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 323 DAG size of output: 297 [2018-10-10 15:37:43,610 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 313 DAG size of output: 295 [2018-10-10 15:37:44,680 WARN L178 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 247 [2018-10-10 15:37:45,944 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 262 [2018-10-10 15:37:47,642 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 285 DAG size of output: 267 [2018-10-10 15:37:49,118 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 291 DAG size of output: 270 [2018-10-10 15:37:50,176 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 249 [2018-10-10 15:37:51,429 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 321 DAG size of output: 294 [2018-10-10 15:37:52,849 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 313 DAG size of output: 295 [2018-10-10 15:37:53,920 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 250 [2018-10-10 15:37:55,245 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 269 [2018-10-10 15:37:56,577 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 289 DAG size of output: 272 [2018-10-10 15:37:57,988 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 295 DAG size of output: 275 [2018-10-10 15:37:58,988 WARN L178 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 242 [2018-10-10 15:38:00,184 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 280 [2018-10-10 15:38:01,413 WARN L178 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 281 [2018-10-10 15:38:03,039 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 253 DAG size of output: 243 [2018-10-10 15:38:04,181 WARN L178 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-10 15:38:05,407 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 252 [2018-10-10 15:38:06,682 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 277 DAG size of output: 255 [2018-10-10 15:38:07,736 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 237 [2018-10-10 15:38:08,938 WARN L178 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 270 [2018-10-10 15:38:10,162 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 271 [2018-10-10 15:38:11,200 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 238 [2018-10-10 15:38:12,423 WARN L178 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 250 [2018-10-10 15:38:13,716 WARN L178 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 253 [2018-10-10 15:38:15,018 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 277 DAG size of output: 256 [2018-10-10 15:38:16,045 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 231 [2018-10-10 15:38:17,782 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 287 DAG size of output: 254 [2018-10-10 15:38:19,414 WARN L178 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 279 DAG size of output: 254 [2018-10-10 15:38:20,461 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 231 [2018-10-10 15:38:21,596 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 243 [2018-10-10 15:38:22,868 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 245 [2018-10-10 15:38:24,129 WARN L178 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 248 [2018-10-10 15:38:25,126 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 228 [2018-10-10 15:38:26,270 WARN L178 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 249 [2018-10-10 15:38:27,466 WARN L178 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 249 [2018-10-10 15:38:28,459 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-10 15:38:29,510 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 233 [2018-10-10 15:38:30,608 WARN L178 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 235 [2018-10-10 15:38:31,736 WARN L178 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 238 [2018-10-10 15:38:32,775 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 221 [2018-10-10 15:38:33,810 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 234 [2018-10-10 15:38:34,856 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-10 15:38:35,822 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 220 [2018-10-10 15:38:36,786 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-10 15:38:37,862 WARN L178 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-10 15:38:38,866 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-10 15:38:39,797 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 214 [2018-10-10 15:38:40,771 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 220 [2018-10-10 15:38:41,737 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2018-10-10 15:38:42,620 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2018-10-10 15:38:43,687 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-10 15:38:44,332 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2018-10-10 15:38:44,947 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-10 15:38:45,602 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:38:45,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:45,706 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-10 15:38:45,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-10 15:38:45,707 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 222 [2018-10-10 15:38:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:45,708 INFO L225 Difference]: With dead ends: 247 [2018-10-10 15:38:45,708 INFO L226 Difference]: Without dead ends: 247 [2018-10-10 15:38:45,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6359 ImplicationChecksByTransitivity, 131.5s TimeCoverageRelationStatistics Valid=4935, Invalid=26571, Unknown=0, NotChecked=0, Total=31506 [2018-10-10 15:38:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-10 15:38:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-10 15:38:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-10 15:38:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-10 15:38:45,713 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-10 15:38:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:45,714 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-10 15:38:45,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-10 15:38:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-10 15:38:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-10 15:38:45,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:45,716 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:45,716 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:45,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1218250745, now seen corresponding path program 13 times [2018-10-10 15:38:45,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:49,040 WARN L178 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-10 15:38:50,450 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:38:51,977 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:38:53,530 WARN L178 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:38:55,040 WARN L178 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-10 15:38:56,519 WARN L178 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:38:58,131 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:38:59,645 WARN L178 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-10 15:39:01,179 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 546 DAG size of output: 75