java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:53:09,012 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:53:09,014 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:53:09,033 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:53:09,034 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:53:09,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:53:09,037 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:53:09,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:53:09,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:53:09,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:53:09,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:53:09,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:53:09,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:53:09,049 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:53:09,055 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:53:09,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:53:09,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:53:09,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:53:09,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:53:09,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:53:09,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:53:09,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:53:09,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 20:53:09,079 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 20:53:09,079 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 20:53:09,080 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 20:53:09,081 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 20:53:09,082 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 20:53:09,083 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 20:53:09,084 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 20:53:09,084 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 20:53:09,085 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-12 20:53:09,087 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:53:09,097 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:53:09,098 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:53:09,098 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:53:09,099 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:53:09,099 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:53:09,099 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:53:09,100 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:53:09,100 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:53:09,100 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:53:09,100 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:53:09,101 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:53:09,101 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:53:09,101 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:53:09,102 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:53:09,102 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:53:09,165 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:53:09,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:53:09,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:53:09,190 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:53:09,190 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:53:09,191 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 20:53:09,191 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-12 20:53:09,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:53:09,285 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:53:09,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:53:09,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:53:09,286 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:53:09,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/1) ... [2018-10-12 20:53:09,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:53:09,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:53:09,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:53:09,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:53:09,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (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 [2018-10-12 20:53:09,418 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:53:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:53:10,002 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:53:10,003 INFO L202 PluginConnector]: Adding new model add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:10 BoogieIcfgContainer [2018-10-12 20:53:10,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:53:10,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:53:10,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:53:10,009 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:53:10,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:09" (1/2) ... [2018-10-12 20:53:10,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c56d90 and model type add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:10, skipping insertion in model container [2018-10-12 20:53:10,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:10" (2/2) ... [2018-10-12 20:53:10,013 INFO L112 eAbstractionObserver]: Analyzing ICFG add_last-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 20:53:10,023 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:53:10,034 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:53:10,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:53:10,084 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:53:10,085 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:53:10,085 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:53:10,085 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:53:10,085 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:53:10,085 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:53:10,086 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:53:10,086 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:53:10,086 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:53:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-10-12 20:53:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-12 20:53:10,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:10,117 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:10,119 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:10,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:10,126 INFO L82 PathProgramCache]: Analyzing trace with hash 283494751, now seen corresponding path program 1 times [2018-10-12 20:53:10,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:10,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:10,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-12 20:53:10,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 20:53:10,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 20:53:10,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:53:10,981 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 10 states. [2018-10-12 20:53:12,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:12,020 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-12 20:53:12,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-12 20:53:12,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-10-12 20:53:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:12,035 INFO L225 Difference]: With dead ends: 121 [2018-10-12 20:53:12,036 INFO L226 Difference]: Without dead ends: 121 [2018-10-12 20:53:12,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-10-12 20:53:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-12 20:53:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 77. [2018-10-12 20:53:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-12 20:53:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-12 20:53:12,088 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 28 [2018-10-12 20:53:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:12,089 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-12 20:53:12,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 20:53:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-12 20:53:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-12 20:53:12,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:12,094 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:12,095 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:12,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:12,096 INFO L82 PathProgramCache]: Analyzing trace with hash -984866601, now seen corresponding path program 1 times [2018-10-12 20:53:12,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:13,013 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2018-10-12 20:53:13,205 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2018-10-12 20:53:13,421 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-10-12 20:53:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:13,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:13,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-12 20:53:13,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-12 20:53:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-12 20:53:13,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-10-12 20:53:13,816 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 20 states. [2018-10-12 20:53:15,075 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 20:53:15,238 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-12 20:53:15,406 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-12 20:53:15,607 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-10-12 20:53:15,839 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-12 20:53:16,102 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-12 20:53:16,234 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2018-10-12 20:53:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:17,931 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-12 20:53:17,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-12 20:53:17,932 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2018-10-12 20:53:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:17,934 INFO L225 Difference]: With dead ends: 169 [2018-10-12 20:53:17,935 INFO L226 Difference]: Without dead ends: 169 [2018-10-12 20:53:17,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=397, Invalid=1325, Unknown=0, NotChecked=0, Total=1722 [2018-10-12 20:53:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-12 20:53:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 125. [2018-10-12 20:53:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-12 20:53:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-12 20:53:17,955 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 76 [2018-10-12 20:53:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:17,956 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-12 20:53:17,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-12 20:53:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-12 20:53:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-12 20:53:17,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:17,958 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:17,959 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:17,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1636345935, now seen corresponding path program 2 times [2018-10-12 20:53:17,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:19,060 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-10-12 20:53:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:19,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:19,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-12 20:53:19,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-12 20:53:19,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-12 20:53:19,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2018-10-12 20:53:19,620 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 24 states. [2018-10-12 20:53:21,517 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:53:21,765 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 20:53:21,920 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-12 20:53:22,150 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:53:22,402 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-12 20:53:22,702 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-12 20:53:22,991 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-12 20:53:23,314 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-12 20:53:23,746 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-12 20:53:23,895 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2018-10-12 20:53:24,341 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-12 20:53:24,908 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:53:25,092 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:53:25,407 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-12 20:53:25,659 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:53:26,007 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:53:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:26,330 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-12 20:53:26,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-12 20:53:26,331 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 124 [2018-10-12 20:53:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:26,333 INFO L225 Difference]: With dead ends: 217 [2018-10-12 20:53:26,333 INFO L226 Difference]: Without dead ends: 217 [2018-10-12 20:53:26,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=441, Invalid=1815, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 20:53:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-12 20:53:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 173. [2018-10-12 20:53:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-12 20:53:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-12 20:53:26,350 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 124 [2018-10-12 20:53:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:26,350 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-12 20:53:26,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-12 20:53:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-12 20:53:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-12 20:53:26,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:26,354 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:26,354 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:26,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:26,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1853579207, now seen corresponding path program 3 times [2018-10-12 20:53:26,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:26,772 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:53:26,977 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:53:27,334 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 20:53:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:28,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:28,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-12 20:53:28,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-12 20:53:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-12 20:53:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2018-10-12 20:53:28,724 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 26 states. [2018-10-12 20:53:29,681 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 20:53:29,902 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-12 20:53:30,088 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-12 20:53:30,268 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-12 20:53:30,765 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-12 20:53:31,038 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-12 20:53:31,259 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:53:31,433 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-12 20:53:31,683 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-12 20:53:31,928 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:53:32,250 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-12 20:53:32,492 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-12 20:53:33,056 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-12 20:53:33,327 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-10-12 20:53:33,528 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:53:33,778 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-12 20:53:34,185 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-12 20:53:34,491 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-10-12 20:53:34,850 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-12 20:53:35,186 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-12 20:53:35,494 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-10-12 20:53:35,758 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-12 20:53:36,220 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:53:36,422 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-12 20:53:36,653 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-12 20:53:36,892 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-10-12 20:53:37,184 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:53:37,770 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-12 20:53:38,035 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:53:38,330 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 20:53:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:38,338 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-12 20:53:38,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-12 20:53:38,339 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 172 [2018-10-12 20:53:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:38,342 INFO L225 Difference]: With dead ends: 265 [2018-10-12 20:53:38,342 INFO L226 Difference]: Without dead ends: 265 [2018-10-12 20:53:38,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=740, Invalid=3550, Unknown=0, NotChecked=0, Total=4290 [2018-10-12 20:53:38,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-12 20:53:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 221. [2018-10-12 20:53:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-12 20:53:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-12 20:53:38,359 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 172 [2018-10-12 20:53:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:38,359 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-12 20:53:38,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-12 20:53:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-12 20:53:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-12 20:53:38,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:38,364 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:38,364 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:38,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:38,365 INFO L82 PathProgramCache]: Analyzing trace with hash 889472831, now seen corresponding path program 4 times [2018-10-12 20:53:38,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:40,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:40,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-12 20:53:40,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-12 20:53:40,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-12 20:53:40,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2018-10-12 20:53:40,235 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 28 states. [2018-10-12 20:53:41,814 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-12 20:53:42,041 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-12 20:53:42,204 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-10-12 20:53:42,887 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-10-12 20:53:43,134 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-12 20:53:43,308 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-12 20:53:44,043 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-12 20:53:44,340 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-12 20:53:44,545 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-12 20:53:44,766 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:53:44,993 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-10-12 20:53:45,279 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:53:45,543 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-12 20:53:45,849 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-12 20:53:46,134 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-12 20:53:46,676 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-12 20:53:47,184 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:53:47,380 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 20:53:47,621 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-12 20:53:47,816 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:53:48,034 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-12 20:53:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:48,421 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-12 20:53:48,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 20:53:48,421 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 220 [2018-10-12 20:53:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:48,423 INFO L225 Difference]: With dead ends: 313 [2018-10-12 20:53:48,424 INFO L226 Difference]: Without dead ends: 313 [2018-10-12 20:53:48,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=523, Invalid=2783, Unknown=0, NotChecked=0, Total=3306 [2018-10-12 20:53:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-12 20:53:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 269. [2018-10-12 20:53:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-12 20:53:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-10-12 20:53:48,439 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 220 [2018-10-12 20:53:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:48,440 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-10-12 20:53:48,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-12 20:53:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-10-12 20:53:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-12 20:53:48,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:48,445 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:48,446 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:48,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:48,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1107075401, now seen corresponding path program 5 times [2018-10-12 20:53:48,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:50,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:50,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-12 20:53:50,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-12 20:53:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-12 20:53:50,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2018-10-12 20:53:50,693 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 30 states. [2018-10-12 20:53:51,387 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-12 20:53:51,651 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-12 20:53:51,900 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2018-10-12 20:53:52,164 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-12 20:53:52,366 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-12 20:53:52,891 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-12 20:53:53,210 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-12 20:53:53,453 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-12 20:53:53,665 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-12 20:53:53,942 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-12 20:53:54,216 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-12 20:53:54,705 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-10-12 20:53:54,979 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 20:53:55,632 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-10-12 20:53:55,892 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 20:53:56,081 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 20:53:56,354 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-12 20:53:56,623 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-12 20:53:56,937 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-12 20:53:57,223 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-12 20:53:57,477 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:53:58,106 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-12 20:53:58,339 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:53:58,499 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 20:53:58,779 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-12 20:53:59,046 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-12 20:53:59,353 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-12 20:53:59,704 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-12 20:53:59,997 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:54:00,641 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-12 20:54:00,882 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:54:01,039 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 20:54:01,274 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-12 20:54:01,548 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-12 20:54:01,873 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-12 20:54:02,208 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2018-10-12 20:54:02,620 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-10-12 20:54:02,967 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-12 20:54:03,125 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2018-10-12 20:54:03,411 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-10-12 20:54:03,717 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 20:54:04,307 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-12 20:54:04,536 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-12 20:54:04,890 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-12 20:54:05,137 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-12 20:54:05,362 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-12 20:54:06,149 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-10-12 20:54:06,374 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-12 20:54:06,584 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-12 20:54:06,745 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2018-10-12 20:54:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:06,752 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-12 20:54:06,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-12 20:54:06,753 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 268 [2018-10-12 20:54:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:06,756 INFO L225 Difference]: With dead ends: 361 [2018-10-12 20:54:06,756 INFO L226 Difference]: Without dead ends: 361 [2018-10-12 20:54:06,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1010, Invalid=6472, Unknown=0, NotChecked=0, Total=7482 [2018-10-12 20:54:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-12 20:54:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 317. [2018-10-12 20:54:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-12 20:54:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-12 20:54:06,768 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 268 [2018-10-12 20:54:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:06,769 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-12 20:54:06,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-12 20:54:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-12 20:54:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-12 20:54:06,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:06,775 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:06,775 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:06,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:06,776 INFO L82 PathProgramCache]: Analyzing trace with hash -765942225, now seen corresponding path program 6 times [2018-10-12 20:54:06,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:07,258 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:54:07,454 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:54:07,627 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:54:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:09,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:09,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-12 20:54:09,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-12 20:54:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-12 20:54:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2018-10-12 20:54:09,679 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 34 states. [2018-10-12 20:54:11,075 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:54:11,313 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 20:54:11,476 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-10-12 20:54:12,223 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:54:12,475 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 20:54:12,637 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 20:54:13,393 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 20:54:13,628 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:54:13,801 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 20:54:14,531 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 20:54:14,791 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:54:15,030 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 20:54:15,291 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-10-12 20:54:15,502 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-12 20:54:15,799 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-12 20:54:16,463 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:54:16,713 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 20:54:16,880 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-12 20:54:17,111 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 20:54:17,359 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 20:54:17,647 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 20:54:17,907 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-12 20:54:18,238 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-12 20:54:18,834 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-10-12 20:54:19,439 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-12 20:54:19,957 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-12 20:54:20,214 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-10-12 20:54:20,554 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 20:54:20,752 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-10-12 20:54:20,978 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-10-12 20:54:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:21,444 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-12 20:54:21,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-12 20:54:21,445 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 316 [2018-10-12 20:54:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:21,447 INFO L225 Difference]: With dead ends: 409 [2018-10-12 20:54:21,447 INFO L226 Difference]: Without dead ends: 409 [2018-10-12 20:54:21,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=655, Invalid=4601, Unknown=0, NotChecked=0, Total=5256 [2018-10-12 20:54:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-10-12 20:54:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 365. [2018-10-12 20:54:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-12 20:54:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-10-12 20:54:21,456 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 316 [2018-10-12 20:54:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:21,457 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-10-12 20:54:21,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-12 20:54:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-10-12 20:54:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-12 20:54:21,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:21,462 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:21,463 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:21,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:21,463 INFO L82 PathProgramCache]: Analyzing trace with hash -85713497, now seen corresponding path program 7 times [2018-10-12 20:54:21,464 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:21,969 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:54:22,159 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:54:22,366 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:54:22,573 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:54:23,077 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 20:54:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:25,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:25,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-12 20:54:25,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-12 20:54:25,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-12 20:54:25,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2018-10-12 20:54:25,766 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 34 states. [2018-10-12 20:54:26,687 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-12 20:54:26,928 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-12 20:54:27,117 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-10-12 20:54:27,893 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 20:54:28,175 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-12 20:54:28,760 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-12 20:54:28,980 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-12 20:54:29,242 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-12 20:54:29,486 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-12 20:54:29,830 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-12 20:54:30,086 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-12 20:54:30,811 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-12 20:54:31,068 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-12 20:54:31,247 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 20:54:31,611 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-12 20:54:31,867 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-12 20:54:32,178 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-12 20:54:32,435 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-12 20:54:32,711 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:54:33,389 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-12 20:54:33,641 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-12 20:54:33,814 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 20:54:34,121 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-12 20:54:34,388 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:54:34,740 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-12 20:54:35,108 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-12 20:54:35,403 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:54:36,157 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-12 20:54:36,418 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-12 20:54:36,587 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 20:54:36,884 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-12 20:54:37,152 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:54:37,468 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-12 20:54:37,729 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-12 20:54:37,995 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:54:38,680 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-12 20:54:38,928 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-12 20:54:39,093 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 20:54:39,385 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-12 20:54:39,635 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-12 20:54:39,942 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-12 20:54:40,200 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-12 20:54:40,485 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:54:41,210 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-12 20:54:41,500 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-12 20:54:41,706 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-12 20:54:41,955 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-12 20:54:42,314 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:54:42,581 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2018-10-12 20:54:42,927 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-12 20:54:43,243 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-12 20:54:43,902 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-12 20:54:44,443 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 20:54:44,653 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-10-12 20:54:44,922 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-12 20:54:45,131 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-12 20:54:45,363 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:54:46,101 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-12 20:54:46,289 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-12 20:54:46,463 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 20:54:46,643 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-12 20:54:46,812 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:54:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:46,820 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-10-12 20:54:46,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-12 20:54:46,821 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 364 [2018-10-12 20:54:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:46,825 INFO L225 Difference]: With dead ends: 457 [2018-10-12 20:54:46,825 INFO L226 Difference]: Without dead ends: 457 [2018-10-12 20:54:46,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=1252, Invalid=9878, Unknown=0, NotChecked=0, Total=11130 [2018-10-12 20:54:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-10-12 20:54:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 413. [2018-10-12 20:54:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-10-12 20:54:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-10-12 20:54:46,836 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 364 [2018-10-12 20:54:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:46,836 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-10-12 20:54:46,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-12 20:54:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-10-12 20:54:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-12 20:54:46,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:46,839 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:46,840 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:46,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:46,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2138716897, now seen corresponding path program 8 times [2018-10-12 20:54:46,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:47,482 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:54:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 1368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:50,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:50,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-12 20:54:50,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-12 20:54:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-12 20:54:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-12 20:54:50,699 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 36 states. [2018-10-12 20:54:51,765 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 20:54:52,013 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-12 20:54:52,212 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-12 20:54:52,998 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-12 20:54:53,283 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 20:54:53,479 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 20:54:53,663 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-12 20:54:53,922 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-12 20:54:54,168 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-12 20:54:54,526 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-12 20:54:54,790 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 20:54:55,473 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-12 20:54:55,729 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:54:55,967 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-12 20:54:56,328 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-12 20:54:56,597 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-12 20:54:56,928 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 20:54:57,205 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-12 20:54:57,494 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 20:54:58,238 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-12 20:54:58,504 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 20:54:58,684 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 20:54:58,998 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 20:54:59,264 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:54:59,603 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:54:59,865 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:55:00,139 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:00,875 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-12 20:55:01,205 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:01,383 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 20:55:01,692 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 20:55:01,950 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:02,282 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:55:02,542 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:55:02,818 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:03,553 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-12 20:55:03,807 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:03,976 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 20:55:04,274 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 20:55:04,519 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:04,883 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:55:05,138 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:55:05,454 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:06,265 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-12 20:55:06,526 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:06,701 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 20:55:07,013 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 20:55:07,263 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:07,592 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:55:07,853 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:55:08,131 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 20:55:08,870 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-12 20:55:09,170 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-12 20:55:09,381 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-12 20:55:09,635 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:10,022 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 20:55:10,332 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-12 20:55:10,736 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-12 20:55:11,081 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-12 20:55:11,259 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2018-10-12 20:55:11,561 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-10-12 20:55:11,906 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2018-10-12 20:55:12,481 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:55:12,705 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:55:12,985 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-12 20:55:13,211 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:55:13,468 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:55:14,174 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-12 20:55:14,366 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-12 20:55:14,549 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:14,759 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-12 20:55:14,949 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 20:55:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:14,958 INFO L93 Difference]: Finished difference Result 505 states and 505 transitions. [2018-10-12 20:55:14,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-12 20:55:14,959 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 412 [2018-10-12 20:55:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:14,963 INFO L225 Difference]: With dead ends: 505 [2018-10-12 20:55:14,963 INFO L226 Difference]: Without dead ends: 505 [2018-10-12 20:55:14,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=1380, Invalid=11960, Unknown=0, NotChecked=0, Total=13340 [2018-10-12 20:55:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-10-12 20:55:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 461. [2018-10-12 20:55:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-10-12 20:55:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 461 transitions. [2018-10-12 20:55:14,975 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 461 transitions. Word has length 412 [2018-10-12 20:55:14,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:14,976 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 461 transitions. [2018-10-12 20:55:14,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-12 20:55:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 461 transitions. [2018-10-12 20:55:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-10-12 20:55:14,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:14,979 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:55:14,979 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:14,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1813879959, now seen corresponding path program 9 times [2018-10-12 20:55:14,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:15,545 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:55:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 0 proven. 1755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:55:19,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:19,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-12 20:55:19,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-12 20:55:19,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-12 20:55:19,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1319, Unknown=0, NotChecked=0, Total=1406 [2018-10-12 20:55:19,021 INFO L87 Difference]: Start difference. First operand 461 states and 461 transitions. Second operand 38 states. [2018-10-12 20:55:19,892 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-12 20:55:20,122 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 20:55:20,419 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-10-12 20:55:20,647 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:55:20,880 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-12 20:55:21,666 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-12 20:55:21,986 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-12 20:55:22,195 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-12 20:55:22,405 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:55:23,266 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-12 20:55:23,531 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:23,707 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:55:24,623 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-12 20:55:24,887 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:55:25,064 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:25,968 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:26,241 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:55:26,416 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:27,390 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:27,660 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:55:27,837 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:28,738 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:29,014 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:55:29,196 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:30,125 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:30,399 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:55:30,571 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:31,472 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:55:31,784 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:55:32,049 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:32,307 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 20:55:32,591 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-12 20:55:32,934 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-12 20:55:33,240 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-12 20:55:33,536 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-12 20:55:33,899 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2018-10-12 20:55:34,237 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2018-10-12 20:55:35,139 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-12 20:55:35,749 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:55:35,964 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 20:55:36,259 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-12 20:55:36,479 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:55:36,728 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-12 20:55:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:37,451 INFO L93 Difference]: Finished difference Result 553 states and 553 transitions. [2018-10-12 20:55:37,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-12 20:55:37,457 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 460 [2018-10-12 20:55:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:37,460 INFO L225 Difference]: With dead ends: 553 [2018-10-12 20:55:37,460 INFO L226 Difference]: Without dead ends: 553 [2018-10-12 20:55:37,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=833, Invalid=7177, Unknown=0, NotChecked=0, Total=8010 [2018-10-12 20:55:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2018-10-12 20:55:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 509. [2018-10-12 20:55:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-10-12 20:55:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2018-10-12 20:55:37,472 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 460 [2018-10-12 20:55:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:37,472 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2018-10-12 20:55:37,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-12 20:55:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2018-10-12 20:55:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-10-12 20:55:37,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:37,476 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:55:37,477 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:37,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2037668849, now seen corresponding path program 10 times [2018-10-12 20:55:37,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:38,112 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:55:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 0 proven. 2190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:55:42,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:42,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-12 20:55:42,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-12 20:55:42,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-12 20:55:42,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1623, Unknown=0, NotChecked=0, Total=1722 [2018-10-12 20:55:42,131 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 42 states. [2018-10-12 20:55:43,803 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:55:44,074 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-12 20:55:44,257 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 20:55:45,147 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-12 20:55:45,419 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:55:45,610 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:46,520 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:55:46,813 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:47,025 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:48,025 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:55:48,312 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:48,508 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:49,443 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:55:49,722 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:49,911 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:50,847 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:55:51,142 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:51,340 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:52,490 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:55:52,762 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:52,960 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:53,900 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:55:54,193 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:54,385 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:55:54,604 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 20:55:54,837 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-12 20:55:55,149 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-12 20:55:55,984 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:55:56,272 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-10-12 20:55:56,461 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-12 20:55:56,724 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 20:55:57,004 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:55:57,393 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-12 20:55:57,736 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-12 20:55:58,147 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-12 20:55:58,515 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-12 20:55:59,292 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-12 20:55:59,902 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:56:00,120 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:56:00,415 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-12 20:56:00,633 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:56:00,886 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:56:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:56:01,557 INFO L93 Difference]: Finished difference Result 601 states and 601 transitions. [2018-10-12 20:56:01,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-12 20:56:01,558 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 508 [2018-10-12 20:56:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:56:01,561 INFO L225 Difference]: With dead ends: 601 [2018-10-12 20:56:01,561 INFO L226 Difference]: Without dead ends: 601 [2018-10-12 20:56:01,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=819, Invalid=7737, Unknown=0, NotChecked=0, Total=8556 [2018-10-12 20:56:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-10-12 20:56:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 557. [2018-10-12 20:56:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-10-12 20:56:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 557 transitions. [2018-10-12 20:56:01,570 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 557 transitions. Word has length 508 [2018-10-12 20:56:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:56:01,571 INFO L481 AbstractCegarLoop]: Abstraction has 557 states and 557 transitions. [2018-10-12 20:56:01,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-12 20:56:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 557 transitions. [2018-10-12 20:56:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-10-12 20:56:01,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:56:01,575 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:56:01,576 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:56:01,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:56:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1487920007, now seen corresponding path program 11 times [2018-10-12 20:56:01,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:56:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:56:02,278 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:56:02,477 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:56:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:56:07,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:56:07,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-12 20:56:07,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-12 20:56:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-12 20:56:07,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1789, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 20:56:07,017 INFO L87 Difference]: Start difference. First operand 557 states and 557 transitions. Second operand 44 states. [2018-10-12 20:56:08,218 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-12 20:56:08,504 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-12 20:56:08,716 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-12 20:56:09,127 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-12 20:56:09,841 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2018-10-12 20:56:10,156 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-12 20:56:10,386 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:56:10,619 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:56:10,917 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:56:11,188 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:56:11,600 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:56:11,889 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:56:12,734 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:56:13,048 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:56:13,228 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:13,566 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:56:13,833 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:56:14,182 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:56:14,539 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:56:14,827 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:56:15,648 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:56:15,921 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:16,103 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:16,437 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 20:56:16,715 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 20:56:17,069 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:56:17,350 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:56:17,649 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-12 20:56:18,536 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-12 20:56:18,806 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:18,986 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:19,319 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 20:56:19,593 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 20:56:19,956 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:56:20,234 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:56:20,526 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-12 20:56:21,370 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-12 20:56:21,652 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:21,830 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:22,162 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 20:56:22,427 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 20:56:22,796 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:56:23,148 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:56:23,468 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-12 20:56:24,273 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-12 20:56:24,542 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:24,725 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:25,066 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 20:56:25,350 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 20:56:25,713 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:56:25,990 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:56:26,296 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-12 20:56:27,129 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-12 20:56:27,399 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:27,582 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:27,916 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 20:56:28,286 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 20:56:28,649 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:56:28,941 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-12 20:56:29,234 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-12 20:56:30,048 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-12 20:56:30,325 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:30,507 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:30,721 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 20:56:30,946 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-12 20:56:31,244 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:56:31,524 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-12 20:56:31,897 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:56:32,182 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-12 20:56:32,492 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-12 20:56:33,448 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-12 20:56:33,730 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 20:56:33,932 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-12 20:56:34,290 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-12 20:56:34,596 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-12 20:56:34,973 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:56:35,267 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-12 20:56:35,575 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 20:56:36,436 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2018-10-12 20:56:36,766 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-12 20:56:36,990 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-12 20:56:37,267 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-12 20:56:37,721 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-12 20:56:38,034 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2018-10-12 20:56:38,529 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-10-12 20:56:38,908 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-12 20:56:39,723 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-12 20:56:40,372 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 20:56:40,597 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 20:56:40,903 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-10-12 20:56:41,136 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 20:56:41,388 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-12 20:56:42,246 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-10-12 20:56:42,446 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-12 20:56:42,642 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-12 20:56:42,974 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-12 20:56:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:56:42,983 INFO L93 Difference]: Finished difference Result 649 states and 649 transitions. [2018-10-12 20:56:42,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-12 20:56:42,984 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 556 [2018-10-12 20:56:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:56:42,988 INFO L225 Difference]: With dead ends: 649 [2018-10-12 20:56:42,988 INFO L226 Difference]: Without dead ends: 649 [2018-10-12 20:56:42,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5827 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=1808, Invalid=20542, Unknown=0, NotChecked=0, Total=22350 [2018-10-12 20:56:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2018-10-12 20:56:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 605. [2018-10-12 20:56:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-10-12 20:56:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 605 transitions. [2018-10-12 20:56:42,999 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 605 transitions. Word has length 556 [2018-10-12 20:56:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:56:43,000 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 605 transitions. [2018-10-12 20:56:43,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-12 20:56:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 605 transitions. [2018-10-12 20:56:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-10-12 20:56:43,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:56:43,005 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:56:43,005 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:56:43,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:56:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash 728384255, now seen corresponding path program 12 times [2018-10-12 20:56:43,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:56:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:56:43,732 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:56:43,906 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:56:44,108 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:56:44,339 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:56:44,846 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 20:56:45,280 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-12 20:56:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 0 proven. 3204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:56:50,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:56:50,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-12 20:56:50,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-12 20:56:50,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-12 20:56:50,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1963, Unknown=0, NotChecked=0, Total=2070 [2018-10-12 20:56:50,279 INFO L87 Difference]: Start difference. First operand 605 states and 605 transitions. Second operand 46 states. [2018-10-12 20:56:51,967 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:56:52,229 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 20:56:52,412 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:56:53,344 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-12 20:56:53,659 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:56:53,947 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:54,951 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:56:55,232 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:56:55,419 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:56:56,424 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-12 20:56:56,709 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:56:56,900 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:57,890 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:56:58,168 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:58,355 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:56:59,424 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:56:59,705 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:56:59,893 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:57:00,856 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:57:01,151 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:57:01,343 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:57:02,366 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 20:57:02,650 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:57:02,842 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:57:03,059 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 20:57:03,287 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-12 20:57:03,604 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-12 20:57:04,581 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:57:04,872 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-12 20:57:05,064 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-12 20:57:06,078 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:57:06,376 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:57:06,579 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 20:57:07,606 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 20:57:07,906 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:57:08,104 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-12 20:57:08,368 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 20:57:08,677 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:57:09,101 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-12 20:57:09,445 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-12 20:57:09,874 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-12 20:57:10,223 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-10-12 20:57:11,089 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-12 20:57:11,749 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 20:57:11,975 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:57:12,296 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-12 20:57:12,521 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:57:12,801 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:57:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:13,524 INFO L93 Difference]: Finished difference Result 697 states and 697 transitions. [2018-10-12 20:57:13,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-12 20:57:13,525 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 604 [2018-10-12 20:57:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:13,528 INFO L225 Difference]: With dead ends: 697 [2018-10-12 20:57:13,529 INFO L226 Difference]: Without dead ends: 697 [2018-10-12 20:57:13,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=901, Invalid=9605, Unknown=0, NotChecked=0, Total=10506 [2018-10-12 20:57:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-12 20:57:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 653. [2018-10-12 20:57:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2018-10-12 20:57:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 653 transitions. [2018-10-12 20:57:13,538 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 653 transitions. Word has length 604 [2018-10-12 20:57:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:13,539 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 653 transitions. [2018-10-12 20:57:13,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-12 20:57:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 653 transitions. [2018-10-12 20:57:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-10-12 20:57:13,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:13,544 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:13,545 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:13,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash 127588983, now seen corresponding path program 13 times [2018-10-12 20:57:13,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:14,287 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:57:14,478 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:57:14,684 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:57:14,896 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:57:15,391 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 20:57:15,824 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-12 20:57:16,482 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-10-12 20:57:17,149 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-12 20:57:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:22,789 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:22,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-12 20:57:22,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-12 20:57:22,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-12 20:57:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1967, Unknown=0, NotChecked=0, Total=2070 [2018-10-12 20:57:22,790 INFO L87 Difference]: Start difference. First operand 653 states and 653 transitions. Second operand 46 states. [2018-10-12 20:57:23,810 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-12 20:57:24,045 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:57:24,415 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-10-12 20:57:24,712 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:57:24,967 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-12 20:57:25,775 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-12 20:57:26,103 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-12 20:57:26,336 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 20:57:26,558 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 20:57:27,542 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-12 20:57:27,838 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:57:28,037 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:29,097 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:29,409 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:57:29,672 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 20:57:30,781 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-12 20:57:31,086 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:57:31,287 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:32,439 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:32,786 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:32,995 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:34,111 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:34,426 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:34,660 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:35,782 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:36,081 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:36,279 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:37,371 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:37,675 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:37,882 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:38,982 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:39,287 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:39,492 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:40,646 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:40,950 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:41,148 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:42,212 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 20:57:42,519 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:57:42,720 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:43,793 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-12 20:57:44,098 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:57:44,300 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:57:44,569 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 20:57:45,059 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-12 20:57:45,480 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-12 20:57:45,821 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2018-10-12 20:57:46,152 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-12 20:57:46,577 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-10-12 20:57:46,952 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-12 20:57:48,072 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-12 20:57:48,797 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:57:49,032 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:57:49,374 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-12 20:57:49,618 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:57:49,924 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:57:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:50,832 INFO L93 Difference]: Finished difference Result 745 states and 745 transitions. [2018-10-12 20:57:50,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-12 20:57:50,832 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 652 [2018-10-12 20:57:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:50,835 INFO L225 Difference]: With dead ends: 745 [2018-10-12 20:57:50,835 INFO L226 Difference]: Without dead ends: 745 [2018-10-12 20:57:50,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=997, Invalid=10993, Unknown=0, NotChecked=0, Total=11990 [2018-10-12 20:57:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-10-12 20:57:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 701. [2018-10-12 20:57:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2018-10-12 20:57:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 701 transitions. [2018-10-12 20:57:50,846 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 701 transitions. Word has length 652 [2018-10-12 20:57:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:50,846 INFO L481 AbstractCegarLoop]: Abstraction has 701 states and 701 transitions. [2018-10-12 20:57:50,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-12 20:57:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 701 transitions. [2018-10-12 20:57:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-10-12 20:57:50,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:50,852 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:50,852 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:50,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:50,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1239309841, now seen corresponding path program 14 times [2018-10-12 20:57:50,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:51,783 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:57:51,983 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:57:52,206 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:57:52,675 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 20:57:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4410 backedges. 0 proven. 4410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:59,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:59,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-12 20:57:59,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-12 20:57:59,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-12 20:57:59,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2335, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 20:57:59,136 INFO L87 Difference]: Start difference. First operand 701 states and 701 transitions. Second operand 50 states. [2018-10-12 20:58:00,213 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2018-10-12 20:58:00,499 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 20:58:00,826 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-12 20:58:01,053 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-12 20:58:02,163 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-12 20:58:02,487 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-12 20:58:02,725 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-12 20:58:02,947 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:58:03,269 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-12 20:58:03,550 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-12 20:58:04,024 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-12 20:58:04,346 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:58:05,289 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-12 20:58:05,670 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:58:05,860 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:06,230 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:06,510 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 20:58:06,907 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:07,198 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-12 20:58:07,521 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:08,449 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:08,740 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:08,932 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:09,314 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:09,603 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:09,998 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:10,298 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:10,708 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:11,661 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:11,946 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:12,143 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:12,509 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:12,797 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:13,203 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:13,526 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:13,895 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:14,929 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:15,222 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:15,424 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:15,886 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:16,160 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 20:58:16,548 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:16,856 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-12 20:58:17,195 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:18,150 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:18,447 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:18,646 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:19,019 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:19,311 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:19,727 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:20,015 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:20,350 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:21,380 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:21,667 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:21,864 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:22,225 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:22,514 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:22,911 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:23,199 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:23,514 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:24,457 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:24,742 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:24,933 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:25,297 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:25,586 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:26,083 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:26,385 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:26,708 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:27,658 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-12 20:58:27,957 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:58:28,151 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:28,523 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:28,809 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:29,202 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:29,494 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:30,074 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:31,125 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:31,445 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:31,642 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:32,092 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:32,381 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:58:32,786 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:33,077 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:58:33,399 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:34,502 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 20:58:34,802 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 20:58:35,015 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:35,392 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-12 20:58:35,688 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 20:58:36,150 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:36,483 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-12 20:58:36,819 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:58:37,768 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-12 20:58:38,065 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 20:58:38,258 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:58:38,484 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 20:58:38,720 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-12 20:58:39,043 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:58:39,346 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 20:58:39,773 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-12 20:58:40,071 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-12 20:58:40,405 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 20:58:41,485 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-12 20:58:41,850 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-12 20:58:42,095 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 20:58:42,380 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 20:58:42,857 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-12 20:58:43,184 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-12 20:58:43,653 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-12 20:58:44,038 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-12 20:58:44,990 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-12 20:58:45,706 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:58:45,955 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-12 20:58:46,372 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-12 20:58:46,688 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-10-12 20:58:46,971 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:58:48,028 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-12 20:58:48,263 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-12 20:58:48,474 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:58:48,696 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-12 20:58:48,908 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 20:58:48,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:58:48,916 INFO L93 Difference]: Finished difference Result 793 states and 793 transitions. [2018-10-12 20:58:48,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-12 20:58:48,916 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 700 [2018-10-12 20:58:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:58:48,920 INFO L225 Difference]: With dead ends: 793 [2018-10-12 20:58:48,921 INFO L226 Difference]: Without dead ends: 793 [2018-10-12 20:58:48,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8685 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=2192, Invalid=30028, Unknown=0, NotChecked=0, Total=32220 [2018-10-12 20:58:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-10-12 20:58:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 749. [2018-10-12 20:58:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2018-10-12 20:58:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 749 transitions. [2018-10-12 20:58:48,939 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 749 transitions. Word has length 700 [2018-10-12 20:58:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:58:48,940 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 749 transitions. [2018-10-12 20:58:48,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-12 20:58:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 749 transitions. [2018-10-12 20:58:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-10-12 20:58:48,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:58:48,947 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:58:48,947 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:58:48,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:58:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1075930777, now seen corresponding path program 15 times [2018-10-12 20:58:48,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:58:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:58:49,804 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:58:49,985 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:58:50,181 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:58:50,386 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:58:50,913 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 20:58:51,362 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-12 20:58:52,044 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-10-12 20:58:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5085 backedges. 0 proven. 5085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:58:59,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:58:59,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-12 20:58:59,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-12 20:58:59,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-12 20:58:59,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2533, Unknown=0, NotChecked=0, Total=2652 [2018-10-12 20:58:59,214 INFO L87 Difference]: Start difference. First operand 749 states and 749 transitions. Second operand 52 states. [2018-10-12 20:59:00,499 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 20:59:00,843 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-12 20:59:01,077 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-12 20:59:01,333 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-10-12 20:59:02,279 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-12 20:59:02,606 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 20:59:02,849 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-12 20:59:03,081 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 20:59:03,414 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-12 20:59:03,716 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 20:59:04,204 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-12 20:59:04,544 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:05,498 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-12 20:59:05,801 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:06,013 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:06,395 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-12 20:59:06,706 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 20:59:07,203 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-12 20:59:07,504 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-12 20:59:07,836 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:08,821 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-12 20:59:09,126 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:09,331 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:09,709 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:10,014 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:10,426 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:10,766 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-12 20:59:11,086 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:12,169 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:12,480 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:12,682 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:13,071 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:13,367 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:59:13,785 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:14,091 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-12 20:59:14,426 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:15,446 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:15,753 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:15,961 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:16,346 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:16,651 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:17,127 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:17,478 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-12 20:59:17,805 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:18,798 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:19,124 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:19,330 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:19,706 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:19,996 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:20,413 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:20,723 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-12 20:59:21,058 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:22,051 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:22,440 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:22,655 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:23,031 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:23,330 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:59:23,756 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:24,050 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-12 20:59:24,384 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:25,372 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:25,685 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:25,893 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:26,275 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:26,570 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:59:26,987 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:27,342 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-12 20:59:28,328 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:29,314 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:29,633 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:29,844 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:30,223 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:30,531 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:30,968 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:31,276 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-12 20:59:31,623 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:32,702 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:33,018 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:33,231 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:33,628 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:33,939 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:34,375 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:34,683 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-12 20:59:35,020 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:36,047 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-12 20:59:36,346 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:36,552 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:36,943 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:59:37,240 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:37,759 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 20:59:38,061 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-12 20:59:38,397 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:39,385 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-12 20:59:39,701 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 20:59:39,910 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:40,159 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 20:59:40,414 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-12 20:59:40,755 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-12 20:59:41,064 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:41,491 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:41,809 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-12 20:59:42,162 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:59:43,306 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2018-10-12 20:59:43,625 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2018-10-12 20:59:43,853 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-12 20:59:44,251 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-12 20:59:44,564 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:59:44,996 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 20:59:45,306 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-12 20:59:45,653 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 20:59:46,672 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2018-10-12 20:59:47,045 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-12 20:59:47,298 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:59:47,614 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:59:48,188 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-10-12 20:59:48,542 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-12 20:59:49,045 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2018-10-12 20:59:49,454 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-12 20:59:51,157 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-12 20:59:51,400 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-12 20:59:51,762 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-12 20:59:52,000 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-12 20:59:52,300 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 20:59:53,501 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-12 20:59:53,726 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-12 20:59:53,954 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 20:59:54,197 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-12 20:59:54,425 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-12 20:59:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:54,433 INFO L93 Difference]: Finished difference Result 841 states and 841 transitions. [2018-10-12 20:59:54,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-12 20:59:54,434 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 748 [2018-10-12 20:59:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:54,438 INFO L225 Difference]: With dead ends: 841 [2018-10-12 20:59:54,438 INFO L226 Difference]: Without dead ends: 841 [2018-10-12 20:59:54,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=2320, Invalid=33590, Unknown=0, NotChecked=0, Total=35910 [2018-10-12 20:59:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2018-10-12 20:59:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 797. [2018-10-12 20:59:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-10-12 20:59:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 797 transitions. [2018-10-12 20:59:54,452 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 797 transitions. Word has length 748 [2018-10-12 20:59:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:54,453 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 797 transitions. [2018-10-12 20:59:54,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-12 20:59:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 797 transitions. [2018-10-12 20:59:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-10-12 20:59:54,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:54,460 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:59:54,460 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:54,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:54,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1840365791, now seen corresponding path program 16 times [2018-10-12 20:59:54,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:55,364 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:59:55,539 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:59:55,744 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:59:55,948 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:00:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:00:04,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:00:04,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-12 21:00:04,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-12 21:00:04,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-12 21:00:04,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2535, Unknown=0, NotChecked=0, Total=2652 [2018-10-12 21:00:04,271 INFO L87 Difference]: Start difference. First operand 797 states and 797 transitions. Second operand 52 states. [2018-10-12 21:00:05,572 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-12 21:00:05,905 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-12 21:00:06,138 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-10-12 21:00:07,266 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:00:07,587 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-12 21:00:07,834 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 21:00:08,057 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-12 21:00:08,462 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-12 21:00:08,744 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-12 21:00:09,232 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 21:00:09,556 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:10,514 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:00:10,785 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 21:00:10,980 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:11,346 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:11,626 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:12,026 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:12,317 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:12,643 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:13,686 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:13,966 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:14,163 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:14,522 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:14,806 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:15,210 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:15,512 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:00:15,837 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:16,798 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:17,081 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 21:00:17,270 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-12 21:00:17,656 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-12 21:00:17,967 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-12 21:00:18,400 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 21:00:18,769 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 21:00:19,101 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:20,123 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:00:20,412 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 21:00:20,613 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:21,000 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:21,300 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:21,724 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:22,039 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:00:22,373 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:23,351 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:23,698 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:23,925 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:24,299 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:24,590 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:25,003 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:25,298 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:25,628 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:26,633 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:26,915 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:27,108 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:27,478 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:27,766 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:28,177 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:28,483 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:00:28,877 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:29,904 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:30,189 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:30,384 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:30,753 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:31,046 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:31,463 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:31,765 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:00:32,106 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:33,105 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:00:33,394 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 21:00:33,591 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:34,068 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:34,362 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:34,782 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:35,073 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:35,400 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:36,396 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:36,686 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:36,881 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:37,253 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:37,550 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:37,970 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:38,275 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:38,601 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:39,676 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:39,966 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:40,160 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:40,541 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:40,840 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:41,253 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:41,552 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:41,889 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:42,915 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:00:43,209 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 21:00:43,409 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:43,797 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:44,144 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:44,605 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:44,907 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:45,245 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:46,260 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:46,561 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:46,763 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:47,134 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:47,430 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:47,836 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:48,133 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:00:48,456 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:49,566 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:00:49,861 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:50,069 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:00:50,439 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:00:50,734 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:00:51,148 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:00:51,444 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 21:00:51,772 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:52,774 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:00:53,113 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-12 21:00:53,355 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-12 21:00:53,647 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:00:54,147 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-12 21:00:54,570 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-12 21:00:55,056 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-12 21:00:55,453 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-12 21:00:56,489 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-12 21:00:57,241 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 21:00:57,806 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-12 21:00:58,061 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-12 21:00:58,365 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 21:00:59,487 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-12 21:00:59,908 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 21:01:00,142 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-12 21:01:00,360 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:01:00,369 INFO L93 Difference]: Finished difference Result 889 states and 889 transitions. [2018-10-12 21:01:00,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-12 21:01:00,369 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 796 [2018-10-12 21:01:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:01:00,373 INFO L225 Difference]: With dead ends: 889 [2018-10-12 21:01:00,373 INFO L226 Difference]: Without dead ends: 889 [2018-10-12 21:01:00,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10323 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=2404, Invalid=35816, Unknown=0, NotChecked=0, Total=38220 [2018-10-12 21:01:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2018-10-12 21:01:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 845. [2018-10-12 21:01:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2018-10-12 21:01:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 845 transitions. [2018-10-12 21:01:00,387 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 845 transitions. Word has length 796 [2018-10-12 21:01:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:01:00,388 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 845 transitions. [2018-10-12 21:01:00,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-12 21:01:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 845 transitions. [2018-10-12 21:01:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-10-12 21:01:00,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:01:00,396 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:01:00,396 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:01:00,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:01:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash -931456937, now seen corresponding path program 17 times [2018-10-12 21:01:00,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:01:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:01:01,550 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:01:01,729 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:01:01,943 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:01:02,361 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-12 21:01:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:01:11,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:01:11,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-12 21:01:11,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-12 21:01:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-12 21:01:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2743, Unknown=0, NotChecked=0, Total=2862 [2018-10-12 21:01:11,113 INFO L87 Difference]: Start difference. First operand 845 states and 845 transitions. Second operand 54 states. [2018-10-12 21:01:12,332 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-12 21:01:12,671 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-10-12 21:01:13,057 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2018-10-12 21:01:13,389 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-12 21:01:13,672 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-12 21:01:14,667 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-12 21:01:15,139 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-12 21:01:15,437 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-10-12 21:01:15,692 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 21:01:16,040 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-12 21:01:16,393 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-12 21:01:16,974 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-10-12 21:01:17,338 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 21:01:18,462 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-12 21:01:18,779 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 21:01:19,000 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:19,402 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:19,756 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 21:01:20,357 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:20,721 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-12 21:01:21,079 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:22,212 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:22,527 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:22,733 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:23,135 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:23,502 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-12 21:01:23,978 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:24,334 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-12 21:01:24,683 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:25,903 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:26,223 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 21:01:26,432 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-12 21:01:26,843 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-12 21:01:27,190 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-12 21:01:27,672 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-10-12 21:01:28,031 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-10-12 21:01:28,390 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 21:01:29,528 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-12 21:01:29,845 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-12 21:01:30,097 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:30,562 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:30,920 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 21:01:31,408 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:31,767 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-12 21:01:32,140 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:33,280 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:33,609 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:33,835 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:34,266 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:34,633 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-12 21:01:35,128 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:35,612 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-12 21:01:35,985 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:37,154 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:37,479 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:37,706 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:38,133 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:38,504 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 21:01:39,007 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:39,370 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-12 21:01:39,736 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:40,928 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:41,256 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:41,474 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:41,881 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:42,236 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 21:01:42,732 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:43,108 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-12 21:01:43,465 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:44,586 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:44,908 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:45,127 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:45,598 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:45,999 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-12 21:01:46,484 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:46,846 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-12 21:01:47,217 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:48,343 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:48,664 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:48,877 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:49,286 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:49,649 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 21:01:50,140 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:50,500 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-12 21:01:50,961 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:01:52,100 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:01:52,425 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 21:01:52,641 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:01:53,055 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:01:53,408 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 21:01:53,897 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:01:54,259 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75