java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:41:34,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:41:34,055 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:41:34,072 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:41:34,072 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:41:34,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:41:34,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:41:34,080 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:41:34,082 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:41:34,083 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:41:34,090 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:41:34,091 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:41:34,092 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:41:34,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:41:34,099 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:41:34,100 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:41:34,101 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:41:34,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:41:34,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:41:34,111 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:41:34,112 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:41:34,114 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:41:34,118 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:41:34,118 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:41:34,118 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:41:34,119 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:41:34,120 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:41:34,122 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:41:34,123 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:41:34,125 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:41:34,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:41:34,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-10 15:41:34,131 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:41:34,147 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:41:34,148 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:41:34,148 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:41:34,149 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:41:34,150 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:41:34,150 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:41:34,151 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:41:34,151 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:41:34,151 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:41:34,151 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:41:34,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:41:34,152 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:41:34,152 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:41:34,153 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:41:34,153 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:41:34,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:41:34,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:41:34,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:41:34,250 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:41:34,250 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:41:34,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-10 15:41:34,251 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-10 15:41:34,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:41:34,326 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:41:34,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:41:34,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:41:34,327 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:41:34,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... [2018-10-10 15:41:34,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:41:34,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:41:34,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:41:34,390 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:41:34,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:41:34,469 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:41:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:41:34,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:41:35,114 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:41:35,115 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:41:35 BoogieIcfgContainer [2018-10-10 15:41:35,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:41:35,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:41:35,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:41:35,120 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:41:35,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:34" (1/2) ... [2018-10-10 15:41:35,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f541a and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:41:35, skipping insertion in model container [2018-10-10 15:41:35,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:41:35" (2/2) ... [2018-10-10 15:41:35,123 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-10 15:41:35,134 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:41:35,143 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:41:35,161 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:41:35,193 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:41:35,194 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:41:35,194 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:41:35,194 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:41:35,194 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:41:35,194 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:41:35,195 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:41:35,195 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:41:35,195 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:41:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-10 15:41:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-10 15:41:35,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:35,241 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:35,242 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:35,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:35,249 INFO L82 PathProgramCache]: Analyzing trace with hash -780520305, now seen corresponding path program 1 times [2018-10-10 15:41:35,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:36,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:41:36,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:41:36,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:41:36,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:41:36,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:41:36,155 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 11 states. [2018-10-10 15:41:37,093 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-10 15:41:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:37,394 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-10 15:41:37,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:41:37,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2018-10-10 15:41:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:37,410 INFO L225 Difference]: With dead ends: 91 [2018-10-10 15:41:37,410 INFO L226 Difference]: Without dead ends: 91 [2018-10-10 15:41:37,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:41:37,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-10 15:41:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-10 15:41:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 15:41:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-10 15:41:37,458 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-10 15:41:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:37,459 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-10 15:41:37,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:41:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-10 15:41:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:41:37,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:37,462 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:37,463 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:37,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:37,463 INFO L82 PathProgramCache]: Analyzing trace with hash -361483911, now seen corresponding path program 1 times [2018-10-10 15:41:37,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:37,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:37,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-10 15:41:37,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:41:37,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:41:37,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:41:37,849 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 12 states. [2018-10-10 15:41:38,833 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-10 15:41:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:38,941 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-10 15:41:38,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 15:41:38,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2018-10-10 15:41:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:38,945 INFO L225 Difference]: With dead ends: 104 [2018-10-10 15:41:38,945 INFO L226 Difference]: Without dead ends: 104 [2018-10-10 15:41:38,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:41:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-10 15:41:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-10 15:41:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-10 15:41:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-10 15:41:38,957 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-10 15:41:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:38,958 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-10 15:41:38,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:41:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-10 15:41:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-10 15:41:38,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:38,962 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:38,962 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:38,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1253179185, now seen corresponding path program 2 times [2018-10-10 15:41:38,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:39,374 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2018-10-10 15:41:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:39,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:39,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-10 15:41:39,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-10 15:41:39,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-10 15:41:39,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:41:39,814 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 21 states. [2018-10-10 15:41:41,068 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-10 15:41:41,341 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-10 15:41:41,664 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-10 15:41:41,929 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-10 15:41:42,127 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-10-10 15:41:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:42,731 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-10 15:41:42,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-10 15:41:42,732 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2018-10-10 15:41:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:42,734 INFO L225 Difference]: With dead ends: 117 [2018-10-10 15:41:42,734 INFO L226 Difference]: Without dead ends: 117 [2018-10-10 15:41:42,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2018-10-10 15:41:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-10 15:41:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-10 15:41:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-10 15:41:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-10 15:41:42,743 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-10 15:41:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:42,744 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-10 15:41:42,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-10 15:41:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-10 15:41:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-10 15:41:42,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:42,747 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:42,747 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:42,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1235111225, now seen corresponding path program 3 times [2018-10-10 15:41:42,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:43,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:43,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-10 15:41:43,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-10 15:41:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-10 15:41:43,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-10-10 15:41:43,986 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 26 states. [2018-10-10 15:41:45,440 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-10 15:41:45,670 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-10 15:41:45,836 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 15:41:46,054 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-10-10 15:41:46,529 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-10 15:41:46,773 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 15:41:46,992 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-10 15:41:47,383 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 15:41:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:48,200 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-10 15:41:48,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-10 15:41:48,201 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2018-10-10 15:41:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:48,203 INFO L225 Difference]: With dead ends: 130 [2018-10-10 15:41:48,204 INFO L226 Difference]: Without dead ends: 130 [2018-10-10 15:41:48,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 15:41:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-10 15:41:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-10 15:41:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-10 15:41:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-10 15:41:48,214 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-10 15:41:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:48,214 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-10 15:41:48,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-10 15:41:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-10 15:41:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-10 15:41:48,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:48,217 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:48,217 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:48,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:48,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1795228401, now seen corresponding path program 4 times [2018-10-10 15:41:48,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:49,471 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-10 15:41:50,053 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-10 15:41:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:50,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:50,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 15:41:50,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 15:41:50,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 15:41:50,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:41:50,874 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 33 states. [2018-10-10 15:41:52,232 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-10 15:41:52,578 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:41:52,833 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-10 15:41:53,024 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:41:53,192 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-10 15:41:53,383 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-10 15:41:53,569 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-10 15:41:53,833 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 15:41:54,065 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:41:54,479 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-10 15:41:54,940 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-10 15:41:55,254 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2018-10-10 15:41:55,609 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2018-10-10 15:41:55,922 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-10-10 15:41:56,171 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-10 15:41:56,425 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-10 15:41:57,176 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-10 15:41:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:57,398 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-10 15:41:57,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-10 15:41:57,400 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 118 [2018-10-10 15:41:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:57,402 INFO L225 Difference]: With dead ends: 143 [2018-10-10 15:41:57,402 INFO L226 Difference]: Without dead ends: 143 [2018-10-10 15:41:57,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=770, Invalid=2890, Unknown=0, NotChecked=0, Total=3660 [2018-10-10 15:41:57,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-10 15:41:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-10 15:41:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-10 15:41:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-10 15:41:57,416 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-10 15:41:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:57,416 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-10 15:41:57,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 15:41:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-10 15:41:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-10 15:41:57,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:57,419 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:57,419 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:57,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:57,419 INFO L82 PathProgramCache]: Analyzing trace with hash 836319481, now seen corresponding path program 5 times [2018-10-10 15:41:57,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:58,083 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-10 15:41:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:59,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:59,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-10 15:41:59,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-10 15:41:59,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-10 15:41:59,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-10 15:41:59,654 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 36 states. [2018-10-10 15:42:01,130 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:42:01,371 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 15:42:01,701 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 15:42:01,944 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 15:42:02,135 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:42:02,421 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-10 15:42:02,821 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-10 15:42:03,149 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-10 15:42:03,415 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:42:03,759 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-10 15:42:04,250 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:42:04,585 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-10 15:42:05,133 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2018-10-10 15:42:05,359 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 15:42:05,538 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-10 15:42:05,746 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:42:06,063 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-10 15:42:06,363 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:42:06,639 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-10 15:42:07,572 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 15:42:07,988 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-10 15:42:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:08,047 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-10 15:42:08,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-10 15:42:08,048 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 131 [2018-10-10 15:42:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:08,049 INFO L225 Difference]: With dead ends: 156 [2018-10-10 15:42:08,049 INFO L226 Difference]: Without dead ends: 156 [2018-10-10 15:42:08,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2018-10-10 15:42:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-10 15:42:08,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-10 15:42:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-10 15:42:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-10 15:42:08,060 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-10 15:42:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:08,060 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-10 15:42:08,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-10 15:42:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-10 15:42:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-10 15:42:08,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:08,063 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:08,064 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:08,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1500588367, now seen corresponding path program 6 times [2018-10-10 15:42:08,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:11,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:11,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-10 15:42:11,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-10 15:42:11,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-10 15:42:11,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:42:11,439 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 43 states. [2018-10-10 15:42:12,607 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:42:12,903 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 15:42:13,168 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 15:42:13,502 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 15:42:13,792 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 15:42:14,010 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 15:42:14,313 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-10 15:42:14,565 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 15:42:14,912 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 15:42:15,499 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:42:15,868 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2018-10-10 15:42:16,247 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2018-10-10 15:42:16,708 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2018-10-10 15:42:17,242 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-10 15:42:17,829 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2018-10-10 15:42:18,277 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-10 15:42:18,657 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-10 15:42:19,051 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2018-10-10 15:42:19,468 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2018-10-10 15:42:19,891 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-10 15:42:20,212 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-10 15:42:20,549 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-10 15:42:20,896 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-10 15:42:21,317 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-10 15:42:21,721 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-10 15:42:22,122 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-10 15:42:22,470 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-10 15:42:22,731 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 15:42:23,250 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 15:42:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:23,277 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-10 15:42:23,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:42:23,278 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 144 [2018-10-10 15:42:23,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:23,279 INFO L225 Difference]: With dead ends: 169 [2018-10-10 15:42:23,279 INFO L226 Difference]: Without dead ends: 169 [2018-10-10 15:42:23,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=1315, Invalid=5165, Unknown=0, NotChecked=0, Total=6480 [2018-10-10 15:42:23,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-10 15:42:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-10 15:42:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-10 15:42:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-10 15:42:23,288 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-10 15:42:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:23,289 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-10 15:42:23,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-10 15:42:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-10 15:42:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-10 15:42:23,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:23,292 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:23,292 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:23,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:23,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1287713977, now seen corresponding path program 7 times [2018-10-10 15:42:23,293 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:25,229 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-10 15:42:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:27,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:27,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 15:42:27,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 15:42:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 15:42:27,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 15:42:27,786 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 47 states. [2018-10-10 15:42:29,726 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:42:30,019 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 15:42:30,340 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 15:42:30,807 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:42:31,161 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 15:42:31,461 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:42:31,778 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 15:42:32,243 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-10 15:42:32,871 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2018-10-10 15:42:33,496 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2018-10-10 15:42:33,890 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 135 [2018-10-10 15:42:34,334 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-10 15:42:34,879 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2018-10-10 15:42:35,541 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2018-10-10 15:42:36,140 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 150 [2018-10-10 15:42:37,013 WARN L178 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2018-10-10 15:42:37,480 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-10 15:42:38,005 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-10 15:42:38,653 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2018-10-10 15:42:39,210 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 149 [2018-10-10 15:42:39,616 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-10 15:42:40,028 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2018-10-10 15:42:40,471 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 134 [2018-10-10 15:42:40,961 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-10 15:42:41,466 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2018-10-10 15:42:41,845 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-10 15:42:42,229 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2018-10-10 15:42:42,655 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-10 15:42:43,102 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2018-10-10 15:42:43,625 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-10 15:42:44,020 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-10-10 15:42:44,386 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-10 15:42:44,674 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 15:42:44,923 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 15:42:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:44,962 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-10 15:42:44,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-10 15:42:44,962 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 157 [2018-10-10 15:42:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:44,963 INFO L225 Difference]: With dead ends: 182 [2018-10-10 15:42:44,964 INFO L226 Difference]: Without dead ends: 182 [2018-10-10 15:42:44,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=1579, Invalid=6431, Unknown=0, NotChecked=0, Total=8010 [2018-10-10 15:42:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-10 15:42:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-10 15:42:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-10 15:42:44,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-10 15:42:44,971 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-10 15:42:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:44,972 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-10 15:42:44,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 15:42:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-10 15:42:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-10 15:42:44,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:44,975 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:44,975 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:44,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash -695695985, now seen corresponding path program 8 times [2018-10-10 15:42:44,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:45,968 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-10 15:42:46,184 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:42:46,389 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:42:46,599 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:42:46,813 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:42:47,026 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 15:42:47,235 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-10 15:42:47,479 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:42:47,749 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-10 15:42:48,021 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:42:48,338 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:42:48,657 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:42:49,091 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 15:42:49,926 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 15:42:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:51,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:51,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-10 15:42:51,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-10 15:42:51,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-10 15:42:51,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2018-10-10 15:42:51,825 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 53 states. [2018-10-10 15:42:53,621 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 15:42:53,997 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-10 15:42:54,382 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:42:54,929 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:42:55,334 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:42:55,642 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-10 15:42:56,016 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 15:42:56,350 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 15:42:56,866 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:42:57,212 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 15:42:57,674 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2018-10-10 15:42:58,179 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-10 15:42:58,802 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2018-10-10 15:42:59,569 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-10 15:43:00,208 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2018-10-10 15:43:00,668 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2018-10-10 15:43:01,208 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2018-10-10 15:43:01,826 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2018-10-10 15:43:02,450 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-10 15:43:03,075 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2018-10-10 15:43:03,527 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-10 15:43:04,093 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-10 15:43:04,680 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 156 [2018-10-10 15:43:05,275 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-10 15:43:05,886 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 162 [2018-10-10 15:43:06,330 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2018-10-10 15:43:06,860 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2018-10-10 15:43:07,347 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-10-10 15:43:07,855 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2018-10-10 15:43:08,374 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-10 15:43:08,827 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-10 15:43:09,310 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-10 15:43:09,782 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-10 15:43:10,281 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-10 15:43:10,795 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-10 15:43:11,208 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-10 15:43:11,618 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-10 15:43:11,923 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 15:43:12,197 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:43:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:12,245 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-10 15:43:12,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-10 15:43:12,246 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 170 [2018-10-10 15:43:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:12,247 INFO L225 Difference]: With dead ends: 195 [2018-10-10 15:43:12,247 INFO L226 Difference]: Without dead ends: 195 [2018-10-10 15:43:12,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=2016, Invalid=8084, Unknown=0, NotChecked=0, Total=10100 [2018-10-10 15:43:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-10 15:43:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-10 15:43:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-10 15:43:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-10 15:43:12,253 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-10 15:43:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:12,254 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-10 15:43:12,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-10 15:43:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-10 15:43:12,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-10 15:43:12,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:12,257 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:12,257 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:12,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash 955351161, now seen corresponding path program 9 times [2018-10-10 15:43:12,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:13,664 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-10 15:43:13,992 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:43:14,373 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:43:14,612 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-10 15:43:14,873 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:43:15,110 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:43:15,357 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-10 15:43:15,645 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-10 15:43:15,958 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 65 [2018-10-10 15:43:16,235 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:43:16,513 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:43:16,789 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:43:17,123 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-10 15:43:17,354 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-10 15:43:17,601 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 15:43:17,838 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 15:43:18,066 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:43:18,335 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-10 15:43:19,297 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2018-10-10 15:43:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:21,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:21,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-10 15:43:21,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-10 15:43:21,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-10 15:43:21,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2939, Unknown=0, NotChecked=0, Total=3080 [2018-10-10 15:43:21,955 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 56 states. [2018-10-10 15:43:23,999 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 15:43:24,522 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:43:25,033 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:43:25,677 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 15:43:26,148 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:43:26,527 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 15:43:26,980 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 15:43:27,689 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-10 15:43:28,638 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-10 15:43:29,483 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2018-10-10 15:43:30,143 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-10-10 15:43:30,565 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:43:31,206 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-10 15:43:31,826 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-10 15:43:32,281 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-10 15:43:32,634 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-10 15:43:33,046 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 15:43:33,693 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-10 15:43:34,330 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-10 15:43:34,845 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:43:35,188 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:43:35,618 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 15:43:36,006 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 15:43:36,632 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 15:43:37,053 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:43:37,395 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-10 15:43:37,797 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-10 15:43:38,374 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-10 15:43:38,965 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 15:43:39,372 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:43:39,733 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 15:43:40,174 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 15:43:40,697 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-10 15:43:41,232 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 15:43:41,586 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 15:43:41,911 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 15:43:42,289 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-10 15:43:42,790 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2018-10-10 15:43:43,342 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:43:43,699 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-10 15:43:43,992 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:43:44,351 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:43:45,054 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:43:45,359 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 15:43:46,005 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 15:43:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:46,102 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-10 15:43:46,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-10 15:43:46,103 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 183 [2018-10-10 15:43:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:46,106 INFO L225 Difference]: With dead ends: 208 [2018-10-10 15:43:46,106 INFO L226 Difference]: Without dead ends: 208 [2018-10-10 15:43:46,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2018-10-10 15:43:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-10 15:43:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-10 15:43:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-10 15:43:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-10 15:43:46,117 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-10 15:43:46,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:46,118 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-10 15:43:46,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-10 15:43:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-10 15:43:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-10 15:43:46,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:46,120 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:46,121 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:46,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash 187240911, now seen corresponding path program 10 times [2018-10-10 15:43:46,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:47,392 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 15:43:47,798 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:43:48,225 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:43:48,670 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:43:49,102 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:43:49,544 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 15:43:50,073 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-10 15:43:50,599 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 15:43:51,133 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-10 15:43:51,595 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:43:52,065 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:43:52,541 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:43:53,036 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 15:43:53,408 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 15:43:53,794 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:43:54,178 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:43:54,545 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:43:54,945 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 15:43:55,278 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:43:55,544 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:43:55,801 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:43:56,054 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:43:56,271 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 15:43:57,183 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 15:43:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:59,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:59,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-10 15:43:59,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-10 15:43:59,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-10 15:43:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2018-10-10 15:43:59,687 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 63 states. [2018-10-10 15:44:01,249 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 15:44:01,701 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 15:44:02,136 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 15:44:02,657 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 15:44:03,136 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:44:03,503 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 15:44:03,899 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:44:04,324 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-10 15:44:04,833 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 15:44:05,346 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:44:05,947 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 187 [2018-10-10 15:44:06,593 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-10 15:44:07,407 WARN L178 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-10 15:44:08,268 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-10 15:44:09,094 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-10 15:44:09,744 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-10 15:44:10,458 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-10 15:44:11,188 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-10 15:44:11,975 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-10 15:44:12,786 WARN L178 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-10 15:44:13,348 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-10 15:44:13,950 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-10 15:44:14,610 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-10 15:44:15,293 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-10 15:44:16,072 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 188 [2018-10-10 15:44:16,639 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2018-10-10 15:44:17,234 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 174 [2018-10-10 15:44:17,889 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2018-10-10 15:44:18,593 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-10 15:44:19,346 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-10 15:44:19,899 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-10 15:44:20,476 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-10 15:44:21,191 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-10 15:44:21,933 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-10 15:44:22,652 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 181 [2018-10-10 15:44:23,190 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2018-10-10 15:44:23,763 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2018-10-10 15:44:24,357 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-10 15:44:24,993 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-10 15:44:25,626 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-10 15:44:26,243 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2018-10-10 15:44:26,808 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-10 15:44:27,379 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2018-10-10 15:44:27,976 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-10 15:44:28,566 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-10 15:44:29,098 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-10 15:44:29,619 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-10 15:44:29,995 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 15:44:30,357 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:44:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:30,380 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-10 15:44:30,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-10 15:44:30,381 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 196 [2018-10-10 15:44:30,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:30,383 INFO L225 Difference]: With dead ends: 221 [2018-10-10 15:44:30,383 INFO L226 Difference]: Without dead ends: 221 [2018-10-10 15:44:30,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=2873, Invalid=11647, Unknown=0, NotChecked=0, Total=14520 [2018-10-10 15:44:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-10 15:44:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-10 15:44:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-10 15:44:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-10 15:44:30,388 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-10 15:44:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:30,388 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-10 15:44:30,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-10 15:44:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-10 15:44:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-10 15:44:30,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:30,390 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:30,390 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:30,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1241963577, now seen corresponding path program 11 times [2018-10-10 15:44:30,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:31,848 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-10 15:44:32,453 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:44:33,057 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:44:33,666 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-10 15:44:34,285 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:44:34,910 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 15:44:35,548 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-10 15:44:36,387 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-10 15:44:37,128 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-10 15:44:37,804 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 15:44:38,497 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 15:44:39,174 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-10 15:44:39,829 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-10 15:44:40,373 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-10 15:44:40,897 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 15:44:41,509 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 15:44:42,026 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 15:44:42,600 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-10 15:44:42,903 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:44:43,201 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:44:43,494 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:44:43,788 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 15:44:44,138 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-10 15:44:44,363 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 15:44:44,597 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:44:44,825 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:44:45,054 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 15:44:45,341 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-10 15:44:46,242 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-10-10 15:44:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:49,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:49,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-10 15:44:49,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-10 15:44:49,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-10 15:44:49,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2018-10-10 15:44:49,176 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 67 states. [2018-10-10 15:44:51,484 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 15:44:51,870 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 15:44:52,399 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 15:44:53,012 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 15:44:53,877 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 15:44:54,485 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 15:44:54,931 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:44:55,468 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 15:44:56,303 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-10 15:44:57,372 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2018-10-10 15:44:58,233 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-10 15:44:58,865 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2018-10-10 15:44:59,559 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-10 15:45:00,425 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-10 15:45:01,498 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2018-10-10 15:45:02,527 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 214 [2018-10-10 15:45:03,157 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2018-10-10 15:45:03,909 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-10 15:45:04,764 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-10 15:45:05,689 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2018-10-10 15:45:06,669 WARN L178 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-10 15:45:07,337 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2018-10-10 15:45:07,992 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2018-10-10 15:45:08,742 WARN L178 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 197 [2018-10-10 15:45:09,604 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200 [2018-10-10 15:45:10,468 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 203 [2018-10-10 15:45:11,081 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2018-10-10 15:45:11,726 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-10 15:45:12,539 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2018-10-10 15:45:13,401 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2018-10-10 15:45:14,309 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2018-10-10 15:45:14,940 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-10 15:45:15,604 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-10 15:45:16,339 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 184 [2018-10-10 15:45:17,223 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2018-10-10 15:45:18,048 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2018-10-10 15:45:18,654 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-10 15:45:19,266 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2018-10-10 15:45:19,995 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2018-10-10 15:45:20,761 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2018-10-10 15:45:21,527 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 189 [2018-10-10 15:45:22,178 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2018-10-10 15:45:22,778 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 168 [2018-10-10 15:45:23,444 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-10 15:45:24,143 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 177 [2018-10-10 15:45:24,862 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-10 15:45:25,437 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-10 15:45:26,015 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2018-10-10 15:45:26,623 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-10 15:45:27,363 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2018-10-10 15:45:28,054 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-10 15:45:28,636 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-10 15:45:29,204 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-10-10 15:45:29,630 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 15:45:30,012 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 15:45:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:30,082 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-10 15:45:30,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-10 15:45:30,082 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 209 [2018-10-10 15:45:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:30,083 INFO L225 Difference]: With dead ends: 234 [2018-10-10 15:45:30,084 INFO L226 Difference]: Without dead ends: 234 [2018-10-10 15:45:30,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3370 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=3233, Invalid=13537, Unknown=0, NotChecked=0, Total=16770 [2018-10-10 15:45:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-10 15:45:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-10 15:45:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-10 15:45:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-10 15:45:30,090 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-10 15:45:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:30,091 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-10 15:45:30,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-10 15:45:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-10 15:45:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-10 15:45:30,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:30,092 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:30,092 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:30,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:30,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1630981647, now seen corresponding path program 12 times [2018-10-10 15:45:30,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:32,314 WARN L178 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 76 [2018-10-10 15:45:33,370 WARN L178 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:45:34,432 WARN L178 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:45:35,525 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 74 [2018-10-10 15:45:36,582 WARN L178 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:45:37,779 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 15:45:38,876 WARN L178 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-10 15:45:40,077 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 398 DAG size of output: 83 [2018-10-10 15:45:41,384 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 411 DAG size of output: 85 [2018-10-10 15:45:42,717 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-10 15:45:43,925 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-10 15:45:45,165 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 393 DAG size of output: 78 [2018-10-10 15:45:46,181 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 76 [2018-10-10 15:45:46,981 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2018-10-10 15:45:47,833 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-10 15:45:48,630 WARN L178 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-10 15:45:49,425 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 72 [2018-10-10 15:45:50,197 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-10 15:45:50,706 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 15:45:51,214 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:45:51,723 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:45:52,225 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:45:52,766 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 15:45:53,224 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 15:45:53,623 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:45:54,024 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:45:54,413 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:45:54,821 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 15:45:55,107 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:45:55,389 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:45:55,676 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:45:55,951 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:45:56,185 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 15:45:57,228 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 15:45:58,084 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-10-10 15:46:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:46:00,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:00,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-10 15:46:00,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-10 15:46:00,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-10 15:46:00,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4652, Unknown=0, NotChecked=0, Total=5256 [2018-10-10 15:46:00,430 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 73 states. [2018-10-10 15:46:02,990 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:46:03,444 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:46:04,039 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:46:04,717 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-10 15:46:05,654 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-10 15:46:06,379 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 15:46:06,920 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:46:07,569 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-10 15:46:08,143 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 15:46:08,972 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-10 15:46:09,548 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-10 15:46:10,264 WARN L178 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 217 [2018-10-10 15:46:11,080 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 211 [2018-10-10 15:46:12,029 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 226 [2018-10-10 15:46:13,259 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 229 [2018-10-10 15:46:14,379 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 232 [2018-10-10 15:46:15,070 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 217 [2018-10-10 15:46:15,913 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 210 [2018-10-10 15:46:16,869 WARN L178 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-10 15:46:17,847 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-10 15:46:18,951 WARN L178 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 246 [2018-10-10 15:46:19,656 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 210 [2018-10-10 15:46:20,415 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-10 15:46:21,296 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-10 15:46:22,217 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-10 15:46:23,169 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 221 [2018-10-10 15:46:23,932 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2018-10-10 15:46:24,678 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-10 15:46:25,504 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 219 [2018-10-10 15:46:26,423 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2018-10-10 15:46:27,367 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-10 15:46:28,063 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2018-10-10 15:46:28,859 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2018-10-10 15:46:29,657 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-10 15:46:30,497 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-10 15:46:31,403 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2018-10-10 15:46:32,095 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2018-10-10 15:46:32,831 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-10 15:46:33,631 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-10 15:46:34,570 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-10 15:46:35,471 WARN L178 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-10 15:46:36,151 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-10 15:46:36,856 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2018-10-10 15:46:37,643 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-10 15:46:38,510 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-10 15:46:39,423 WARN L178 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-10 15:46:40,093 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-10 15:46:40,791 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-10 15:46:41,530 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 184 [2018-10-10 15:46:42,292 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2018-10-10 15:46:43,061 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-10 15:46:43,721 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 173 [2018-10-10 15:46:44,478 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-10 15:46:45,178 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 176 [2018-10-10 15:46:45,911 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-10 15:46:46,640 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-10 15:46:47,289 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-10 15:46:47,930 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-10 15:46:48,402 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 15:46:48,840 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 15:46:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:48,916 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-10 15:46:48,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-10 15:46:48,917 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 222 [2018-10-10 15:46:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:48,919 INFO L225 Difference]: With dead ends: 247 [2018-10-10 15:46:48,919 INFO L226 Difference]: Without dead ends: 247 [2018-10-10 15:46:48,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 72.6s TimeCoverageRelationStatistics Valid=3886, Invalid=15854, Unknown=0, NotChecked=0, Total=19740 [2018-10-10 15:46:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-10 15:46:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-10 15:46:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-10 15:46:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-10 15:46:48,925 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-10 15:46:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:48,926 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-10 15:46:48,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-10 15:46:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-10 15:46:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-10 15:46:48,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:48,927 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:46:48,928 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:48,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:48,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1218250745, now seen corresponding path program 13 times [2018-10-10 15:46:48,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:52,366 WARN L178 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-10 15:46:53,828 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:46:55,322 WARN L178 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:46:56,751 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-10 15:46:58,128 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:46:59,644 WARN L178 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 15:47:01,156 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-10 15:47:02,859 WARN L178 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 559 DAG size of output: 88 [2018-10-10 15:47:04,721 WARN L178 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 572 DAG size of output: 90 [2018-10-10 15:47:06,391 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-10 15:47:08,058 WARN L178 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-10 15:47:09,801 WARN L178 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 554 DAG size of output: 83 [2018-10-10 15:47:11,200 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 398 DAG size of output: 81 [2018-10-10 15:47:12,335 WARN L178 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 82 [2018-10-10 15:47:13,485 WARN L178 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-10 15:47:14,635 WARN L178 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-10 15:47:15,821 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 77 [2018-10-10 15:47:16,838 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 75 [2018-10-10 15:47:17,581 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-10 15:47:18,282 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 15:47:18,999 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 15:47:19,736 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-10 15:47:20,500 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-10 15:47:21,064 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-10 15:47:21,633 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 15:47:22,199 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 15:47:22,770 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 15:47:23,395 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-10 15:47:23,756 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:47:24,088 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:47:24,420 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 15:47:24,750 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 15:47:25,243 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-10 15:47:25,514 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 15:47:25,776 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:47:26,036 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 15:47:26,306 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 15:47:26,616 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-10 15:47:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:47:31,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:47:31,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-10 15:47:31,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-10 15:47:31,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-10 15:47:31,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2018-10-10 15:47:31,370 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 77 states. [2018-10-10 15:47:34,019 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-10 15:47:34,467 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 15:47:35,152 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 15:47:35,923 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-10 15:47:36,962 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-10 15:47:37,689 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-10 15:47:38,266 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:47:38,979 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-10 15:47:40,025 WARN L178 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-10 15:47:41,445 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 242 [2018-10-10 15:47:42,607 WARN L178 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 245 [2018-10-10 15:47:43,385 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2018-10-10 15:47:44,296 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 229 [2018-10-10 15:47:45,264 WARN L178 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 236 [2018-10-10 15:47:46,610 WARN L178 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 239 [2018-10-10 15:47:47,771 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 242 [2018-10-10 15:47:48,526 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 231 [2018-10-10 15:47:49,447 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2018-10-10 15:47:50,632 WARN L178 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 262 [2018-10-10 15:47:52,047 WARN L178 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 263 [2018-10-10 15:47:53,306 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 287 DAG size of output: 266 [2018-10-10 15:47:54,110 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 225 [2018-10-10 15:47:55,027 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-10 15:47:56,178 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 230 [2018-10-10 15:47:57,539 WARN L178 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 233 [2018-10-10 15:47:58,749 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 261 DAG size of output: 236 [2018-10-10 15:47:59,523 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 225 [2018-10-10 15:48:00,469 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-10 15:48:01,601 WARN L178 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 246 [2018-10-10 15:48:02,709 WARN L178 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 247 [2018-10-10 15:48:03,884 WARN L178 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 250 [2018-10-10 15:48:04,648 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 218 [2018-10-10 15:48:05,507 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 213 [2018-10-10 15:48:06,532 WARN L178 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 218 [2018-10-10 15:48:07,560 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2018-10-10 15:48:08,615 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 224 [2018-10-10 15:48:09,355 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 213 [2018-10-10 15:48:10,182 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-10 15:48:11,257 WARN L178 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 228 [2018-10-10 15:48:12,369 WARN L178 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 229 [2018-10-10 15:48:13,520 WARN L178 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 232 [2018-10-10 15:48:14,277 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 206 [2018-10-10 15:48:15,187 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2018-10-10 15:48:16,246 WARN L178 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2018-10-10 15:48:17,251 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-10-10 15:48:18,270 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 212 [2018-10-10 15:48:19,020 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 201 [2018-10-10 15:48:19,820 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2018-10-10 15:48:20,690 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2018-10-10 15:48:21,733 WARN L178 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 211 [2018-10-10 15:48:22,701 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 214 [2018-10-10 15:48:23,431 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-10 15:48:24,167 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-10 15:48:24,959 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-10 15:48:25,782 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-10 15:48:26,688 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2018-10-10 15:48:27,369 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2018-10-10 15:48:28,073 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-10 15:48:28,782 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-10 15:48:29,525 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2018-10-10 15:48:30,282 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-10 15:48:30,966 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-10 15:48:31,725 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-10 15:48:32,254 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 15:48:32,750 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 15:48:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:48:32,839 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-10 15:48:32,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-10 15:48:32,839 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 235 [2018-10-10 15:48:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:48:32,840 INFO L225 Difference]: With dead ends: 260 [2018-10-10 15:48:32,841 INFO L226 Difference]: Without dead ends: 260 [2018-10-10 15:48:32,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 96.1s TimeCoverageRelationStatistics Valid=3811, Invalid=18539, Unknown=0, NotChecked=0, Total=22350 [2018-10-10 15:48:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-10 15:48:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 249. [2018-10-10 15:48:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-10 15:48:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-10 15:48:32,846 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 235 [2018-10-10 15:48:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:48:32,847 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-10 15:48:32,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-10 15:48:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-10 15:48:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-10 15:48:32,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:48:32,848 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:48:32,848 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:48:32,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:48:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash -308954545, now seen corresponding path program 14 times [2018-10-10 15:48:32,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:48:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:48:37,623 WARN L178 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 808 DAG size of output: 86 [2018-10-10 15:48:40,357 WARN L178 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-10 15:48:43,204 WARN L178 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-10 15:48:45,905 WARN L178 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 806 DAG size of output: 88 [2018-10-10 15:48:48,710 WARN L178 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-10 15:48:51,406 WARN L178 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-10 15:48:54,390 WARN L178 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 801 DAG size of output: 81 [2018-10-10 15:48:57,698 WARN L178 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 815 DAG size of output: 97 [2018-10-10 15:49:00,949 WARN L178 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 828 DAG size of output: 99 [2018-10-10 15:49:04,069 WARN L178 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 812 DAG size of output: 94 [2018-10-10 15:49:07,089 WARN L178 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 812 DAG size of output: 94 [2018-10-10 15:49:10,172 WARN L178 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 810 DAG size of output: 92 [2018-10-10 15:49:12,662 WARN L178 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 576 DAG size of output: 87 [2018-10-10 15:49:14,661 WARN L178 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 558 DAG size of output: 88 [2018-10-10 15:49:16,618 WARN L178 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-10 15:49:18,706 WARN L178 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-10 15:49:20,708 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 553 DAG size of output: 83 [2018-10-10 15:49:22,425 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 434 DAG size of output: 84 [2018-10-10 15:49:23,855 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 398 DAG size of output: 83 [2018-10-10 15:49:25,156 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-10 15:49:26,425 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-10 15:49:27,674 WARN L178 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 78 [2018-10-10 15:49:28,790 WARN L178 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 76 [2018-10-10 15:49:29,641 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2018-10-10 15:49:30,472 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-10 15:49:31,323 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-10 15:49:32,149 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 72 [2018-10-10 15:49:32,998 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-10 15:49:33,584 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 15:49:34,126 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:49:34,666 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 15:49:35,208 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 15:49:35,758 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 15:49:36,190 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 15:49:36,617 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:49:37,046 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 15:49:37,467 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 15:49:37,892 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 15:49:38,277 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:49:38,581 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:49:38,875 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 15:49:39,181 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 15:49:39,449 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 15:49:40,600 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 15:49:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:49:44,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:49:44,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-10 15:49:44,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-10 15:49:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-10 15:49:44,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=5983, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:49:44,512 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 83 states. [2018-10-10 15:49:46,347 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 15:49:46,799 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:49:47,412 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-10 15:49:48,114 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2018-10-10 15:49:49,019 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2018-10-10 15:49:49,813 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-10 15:49:50,406 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 15:49:51,631 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-10 15:49:52,304 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-10 15:49:53,135 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2018-10-10 15:49:53,892 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2018-10-10 15:49:54,745 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 248 [2018-10-10 15:49:55,681 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 244 [2018-10-10 15:49:56,778 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2018-10-10 15:49:58,082 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 263 DAG size of output: 260 [2018-10-10 15:49:59,386 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 266 DAG size of output: 263 [2018-10-10 15:50:00,209 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 246 [2018-10-10 15:50:01,160 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2018-10-10 15:50:02,314 WARN L178 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 278 [2018-10-10 15:50:03,564 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2018-10-10 15:50:04,882 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 287 DAG size of output: 284 [2018-10-10 15:50:05,698 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 241 [2018-10-10 15:50:06,631 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2018-10-10 15:50:07,704 WARN L178 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 244 [2018-10-10 15:50:08,880 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 247 [2018-10-10 15:50:10,018 WARN L178 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 250 [2018-10-10 15:50:10,833 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-10 15:50:11,751 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 228 [2018-10-10 15:50:12,806 WARN L178 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-10 15:50:13,879 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-10 15:50:15,031 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-10 15:50:15,833 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 228 [2018-10-10 15:50:16,728 WARN L178 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-10 15:50:17,737 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-10 15:50:18,790 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2018-10-10 15:50:19,893 WARN L178 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 239 [2018-10-10 15:50:20,697 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2018-10-10 15:50:21,573 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2018-10-10 15:50:22,489 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2018-10-10 15:50:23,468 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-10 15:50:24,530 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-10 15:50:25,342 WARN L178 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 216 [2018-10-10 15:50:26,192 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-10 15:50:27,087 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2018-10-10 15:50:28,010 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2018-10-10 15:50:28,975 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-10 15:50:29,806 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 211 [2018-10-10 15:50:30,665 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210