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 0.1.23-093a8c0 [2018-10-14 16:49:02,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:49:02,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:49:02,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:49:02,118 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:49:02,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:49:02,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:49:02,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:49:02,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:49:02,124 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:49:02,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:49:02,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:49:02,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:49:02,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:49:02,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:49:02,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:49:02,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:49:02,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:49:02,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:49:02,136 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:49:02,137 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:49:02,138 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:49:02,141 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:49:02,157 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:49:02,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:49:02,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:49:02,173 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:49:02,174 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:49:02,175 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:49:02,175 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:49:02,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:49:02,176 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:49:02,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:49:02,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:49:02,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:49:02,177 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:49:02,177 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:49:02,178 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:49:02,179 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:49:02,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:49:02,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:49:02,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:49:02,275 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:49:02,275 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:49:02,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-14 16:49:02,276 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-14 16:49:02,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:49:02,382 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:49:02,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:49:02,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:49:02,384 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:49:02,414 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,416 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,435 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,436 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,444 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,446 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,447 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 14.10 04:49:02" (1/1) ... [2018-10-14 16:49:02,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:49:02,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:49:02,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:49:02,451 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:49:02,452 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 14.10 04:49:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:49:02,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:49:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:49:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:49:03,110 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:49:03,113 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 14.10 04:49:03 BoogieIcfgContainer [2018-10-14 16:49:03,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:49:03,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:49:03,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:49:03,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:49:03,119 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 14.10 04:49:02" (1/2) ... [2018-10-14 16:49:03,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2927f7f6 and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:03, skipping insertion in model container [2018-10-14 16:49:03,121 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 14.10 04:49:03" (2/2) ... [2018-10-14 16:49:03,124 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-14 16:49:03,134 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:49:03,144 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:49:03,163 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:49:03,195 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:49:03,195 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:49:03,196 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:49:03,196 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:49:03,196 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:49:03,196 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:49:03,196 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:49:03,196 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:49:03,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:49:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-14 16:49:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-14 16:49:03,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:03,242 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] [2018-10-14 16:49:03,244 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:03,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:03,250 INFO L82 PathProgramCache]: Analyzing trace with hash -780520305, now seen corresponding path program 1 times [2018-10-14 16:49:03,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:04,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:49:04,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:49:04,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:49:04,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:49:04,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:49:04,139 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 11 states. [2018-10-14 16:49:05,059 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-14 16:49:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:05,350 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-14 16:49:05,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:49:05,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2018-10-14 16:49:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:05,368 INFO L225 Difference]: With dead ends: 91 [2018-10-14 16:49:05,368 INFO L226 Difference]: Without dead ends: 91 [2018-10-14 16:49:05,371 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 [2018-10-14 16:49:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-14 16:49:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-14 16:49:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-14 16:49:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-14 16:49:05,418 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-14 16:49:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:05,419 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-14 16:49:05,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:49:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-14 16:49:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-14 16:49:05,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:05,423 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] [2018-10-14 16:49:05,424 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:05,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash -361483911, now seen corresponding path program 1 times [2018-10-14 16:49:05,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:05,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:05,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 16:49:05,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:49:05,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:49:05,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:49:05,780 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 12 states. [2018-10-14 16:49:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:07,018 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-14 16:49:07,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 16:49:07,019 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2018-10-14 16:49:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:07,021 INFO L225 Difference]: With dead ends: 104 [2018-10-14 16:49:07,022 INFO L226 Difference]: Without dead ends: 104 [2018-10-14 16:49:07,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:49:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-14 16:49:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-14 16:49:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-14 16:49:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-14 16:49:07,034 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-14 16:49:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:07,035 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-14 16:49:07,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:49:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-14 16:49:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-14 16:49:07,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:07,039 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] [2018-10-14 16:49:07,039 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:07,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1253179185, now seen corresponding path program 2 times [2018-10-14 16:49:07,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:07,524 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2018-10-14 16:49:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:07,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:07,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 16:49:07,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:49:07,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:49:07,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:49:07,943 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 21 states. [2018-10-14 16:49:09,115 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-14 16:49:09,405 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-14 16:49:09,745 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-14 16:49:10,014 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-14 16:49:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:10,668 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-14 16:49:10,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-14 16:49:10,675 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2018-10-14 16:49:10,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:10,677 INFO L225 Difference]: With dead ends: 117 [2018-10-14 16:49:10,677 INFO L226 Difference]: Without dead ends: 117 [2018-10-14 16:49:10,679 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 [2018-10-14 16:49:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-14 16:49:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-14 16:49:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-14 16:49:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-14 16:49:10,688 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-14 16:49:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:10,689 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-14 16:49:10,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:49:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-14 16:49:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-14 16:49:10,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:10,691 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] [2018-10-14 16:49:10,691 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:10,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:10,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1235111225, now seen corresponding path program 3 times [2018-10-14 16:49:10,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:11,197 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-10-14 16:49:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:11,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:11,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-14 16:49:11,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-14 16:49:11,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-14 16:49:11,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:49:11,965 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 26 states. [2018-10-14 16:49:13,795 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-14 16:49:14,023 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-14 16:49:14,208 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-14 16:49:14,427 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-10-14 16:49:14,930 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-14 16:49:15,180 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-14 16:49:15,379 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-14 16:49:15,770 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-14 16:49:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:16,602 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-14 16:49:16,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-14 16:49:16,602 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2018-10-14 16:49:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:16,604 INFO L225 Difference]: With dead ends: 130 [2018-10-14 16:49:16,604 INFO L226 Difference]: Without dead ends: 130 [2018-10-14 16:49:16,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:49:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-14 16:49:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-14 16:49:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-14 16:49:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-14 16:49:16,614 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-14 16:49:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:16,615 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-14 16:49:16,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-14 16:49:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-14 16:49:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-14 16:49:16,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:16,617 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] [2018-10-14 16:49:16,617 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:16,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:16,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1795228401, now seen corresponding path program 4 times [2018-10-14 16:49:16,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:17,760 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-14 16:49:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:18,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:18,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:49:18,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:49:18,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:49:18,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:49:18,735 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 33 states. [2018-10-14 16:49:20,426 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 16:49:20,681 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-14 16:49:20,872 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 16:49:21,402 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-14 16:49:21,686 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-14 16:49:21,913 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 16:49:22,349 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-14 16:49:22,868 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-14 16:49:23,200 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2018-10-14 16:49:23,548 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2018-10-14 16:49:23,856 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-10-14 16:49:24,099 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-14 16:49:24,388 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-14 16:49:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:25,308 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-14 16:49:25,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-14 16:49:25,315 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 118 [2018-10-14 16:49:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:25,316 INFO L225 Difference]: With dead ends: 143 [2018-10-14 16:49:25,317 INFO L226 Difference]: Without dead ends: 143 [2018-10-14 16:49:25,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=770, Invalid=2890, Unknown=0, NotChecked=0, Total=3660 [2018-10-14 16:49:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-14 16:49:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-14 16:49:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-14 16:49:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-14 16:49:25,326 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-14 16:49:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:25,327 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-14 16:49:25,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:49:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-14 16:49:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-14 16:49:25,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:25,329 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] [2018-10-14 16:49:25,330 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:25,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash 836319481, now seen corresponding path program 5 times [2018-10-14 16:49:25,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:26,462 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-14 16:49:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:28,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:28,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 16:49:28,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 16:49:28,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 16:49:28,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:49:28,312 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 36 states. [2018-10-14 16:49:29,794 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 16:49:30,038 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 16:49:30,360 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 16:49:30,599 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 16:49:30,788 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 16:49:31,020 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-14 16:49:31,387 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-14 16:49:31,707 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-14 16:49:31,970 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 16:49:32,317 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-14 16:49:32,890 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 16:49:33,247 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-14 16:49:33,781 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2018-10-14 16:49:34,004 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-14 16:49:34,385 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 16:49:34,691 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-14 16:49:34,990 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 16:49:35,264 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-14 16:49:36,146 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-14 16:49:36,507 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-14 16:49:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:36,562 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-14 16:49:36,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-14 16:49:36,563 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 131 [2018-10-14 16:49:36,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:36,564 INFO L225 Difference]: With dead ends: 156 [2018-10-14 16:49:36,564 INFO L226 Difference]: Without dead ends: 156 [2018-10-14 16:49:36,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:49:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-14 16:49:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-14 16:49:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-14 16:49:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-14 16:49:36,575 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-14 16:49:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:36,576 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-14 16:49:36,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 16:49:36,576 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-14 16:49:36,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-14 16:49:36,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:36,579 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] [2018-10-14 16:49:36,579 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:36,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:36,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1500588367, now seen corresponding path program 6 times [2018-10-14 16:49:36,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:38,060 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-14 16:49:38,509 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-10-14 16:49:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:39,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:39,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:49:39,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:49:39,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:49:39,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:49:39,530 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 43 states. [2018-10-14 16:49:40,692 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 16:49:40,927 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-14 16:49:41,193 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 16:49:41,519 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 16:49:41,798 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 16:49:42,020 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 16:49:42,297 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-14 16:49:42,553 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 16:49:42,893 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 16:49:43,680 WARN L179 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 16:49:44,035 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2018-10-14 16:49:44,396 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2018-10-14 16:49:44,856 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2018-10-14 16:49:45,380 WARN L179 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-14 16:49:45,887 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2018-10-14 16:49:46,346 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-14 16:49:46,738 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-14 16:49:47,134 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2018-10-14 16:49:47,557 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2018-10-14 16:49:47,989 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-14 16:49:48,370 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-14 16:49:48,724 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-14 16:49:49,075 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-14 16:49:49,506 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-14 16:49:49,889 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-14 16:49:50,309 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-14 16:49:50,627 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-14 16:49:50,870 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 16:49:51,663 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 16:49:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:51,865 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-14 16:49:51,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:49:51,865 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 144 [2018-10-14 16:49:51,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:51,867 INFO L225 Difference]: With dead ends: 169 [2018-10-14 16:49:51,867 INFO L226 Difference]: Without dead ends: 169 [2018-10-14 16:49:51,869 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 [2018-10-14 16:49:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-14 16:49:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-14 16:49:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-14 16:49:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-14 16:49:51,885 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-14 16:49:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:51,885 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-14 16:49:51,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:49:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-14 16:49:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-14 16:49:51,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:51,891 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] [2018-10-14 16:49:51,892 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:51,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1287713977, now seen corresponding path program 7 times [2018-10-14 16:49:51,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:53,274 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-10-14 16:49:53,467 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2018-10-14 16:49:53,648 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-14 16:49:53,804 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-14 16:49:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:56,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:56,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 16:49:56,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 16:49:56,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 16:49:56,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 16:49:56,257 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 47 states. [2018-10-14 16:49:58,333 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 16:49:58,679 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 16:49:59,004 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 16:49:59,508 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 16:49:59,876 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 16:50:00,150 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 16:50:00,464 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-14 16:50:00,955 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-14 16:50:01,600 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2018-10-14 16:50:02,178 WARN L179 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2018-10-14 16:50:02,587 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 135 [2018-10-14 16:50:03,031 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-14 16:50:03,633 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2018-10-14 16:50:04,358 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2018-10-14 16:50:04,954 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 150 [2018-10-14 16:50:06,106 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2018-10-14 16:50:06,559 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-14 16:50:07,100 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-14 16:50:07,668 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2018-10-14 16:50:08,248 WARN L179 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 149 [2018-10-14 16:50:08,727 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-14 16:50:09,181 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2018-10-14 16:50:09,650 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 134 [2018-10-14 16:50:10,167 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-14 16:50:10,676 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2018-10-14 16:50:11,064 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-14 16:50:11,455 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2018-10-14 16:50:11,863 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-14 16:50:12,304 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2018-10-14 16:50:12,744 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-14 16:50:13,176 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-10-14 16:50:13,543 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-14 16:50:13,872 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 16:50:14,140 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 16:50:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:14,176 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-14 16:50:14,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 16:50:14,177 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 157 [2018-10-14 16:50:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:14,179 INFO L225 Difference]: With dead ends: 182 [2018-10-14 16:50:14,179 INFO L226 Difference]: Without dead ends: 182 [2018-10-14 16:50:14,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=1579, Invalid=6431, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:50:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-14 16:50:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-14 16:50:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-14 16:50:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-14 16:50:14,187 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-14 16:50:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:14,188 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-14 16:50:14,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 16:50:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-14 16:50:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-14 16:50:14,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:14,191 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] [2018-10-14 16:50:14,191 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:14,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash -695695985, now seen corresponding path program 8 times [2018-10-14 16:50:14,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:15,187 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-14 16:50:15,400 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 16:50:15,608 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 16:50:15,834 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:50:16,049 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 16:50:16,266 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 16:50:16,494 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-14 16:50:16,756 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 16:50:17,026 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-14 16:50:17,246 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:50:17,608 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:50:17,838 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 16:50:18,256 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 16:50:18,927 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-14 16:50:19,189 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-14 16:50:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:21,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:21,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-14 16:50:21,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-14 16:50:21,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-14 16:50:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2018-10-14 16:50:21,164 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 53 states. [2018-10-14 16:50:22,937 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-14 16:50:23,278 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-14 16:50:23,669 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 16:50:24,286 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 16:50:24,677 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 16:50:24,988 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-14 16:50:25,362 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 16:50:25,707 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 16:50:26,239 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 16:50:26,619 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 16:50:27,120 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2018-10-14 16:50:27,637 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-14 16:50:28,207 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2018-10-14 16:50:28,932 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-14 16:50:29,627 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2018-10-14 16:50:30,081 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2018-10-14 16:50:30,606 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2018-10-14 16:50:31,211 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2018-10-14 16:50:31,829 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-14 16:50:32,442 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2018-10-14 16:50:32,898 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-14 16:50:33,529 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-14 16:50:34,068 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 156 [2018-10-14 16:50:34,726 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-14 16:50:35,319 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 162 [2018-10-14 16:50:35,741 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2018-10-14 16:50:36,192 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2018-10-14 16:50:36,671 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-10-14 16:50:37,193 WARN L179 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2018-10-14 16:50:37,726 WARN L179 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-14 16:50:38,150 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-14 16:50:38,578 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-14 16:50:39,038 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-14 16:50:39,616 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-14 16:50:40,142 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-14 16:50:40,549 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-14 16:50:40,995 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-14 16:50:41,334 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-14 16:50:41,613 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 16:50:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:41,660 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-14 16:50:41,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-14 16:50:41,661 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 170 [2018-10-14 16:50:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:41,662 INFO L225 Difference]: With dead ends: 195 [2018-10-14 16:50:41,662 INFO L226 Difference]: Without dead ends: 195 [2018-10-14 16:50:41,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=2016, Invalid=8084, Unknown=0, NotChecked=0, Total=10100 [2018-10-14 16:50:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-14 16:50:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-14 16:50:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 16:50:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-14 16:50:41,669 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-14 16:50:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:41,669 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-14 16:50:41,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-14 16:50:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-14 16:50:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-14 16:50:41,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:41,672 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] [2018-10-14 16:50:41,672 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:41,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash 955351161, now seen corresponding path program 9 times [2018-10-14 16:50:41,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:42,999 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-14 16:50:43,356 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-14 16:50:43,683 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 16:50:44,017 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 16:50:44,250 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-14 16:50:44,565 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 16:50:44,880 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 16:50:45,124 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-14 16:50:45,423 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-14 16:50:45,747 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 65 [2018-10-14 16:50:46,033 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 16:50:46,317 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 16:50:46,598 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 16:50:46,931 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-14 16:50:47,158 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-14 16:50:47,386 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 16:50:47,618 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 16:50:47,846 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 16:50:48,118 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-14 16:50:48,491 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-14 16:50:49,889 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-10-14 16:50:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:51,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:51,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 16:50:51,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 16:50:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 16:50:51,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2939, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:50:51,766 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 56 states. [2018-10-14 16:50:53,801 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-14 16:50:54,232 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 16:50:54,772 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:50:55,444 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-14 16:50:55,894 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:50:56,254 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 16:50:56,696 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 16:50:57,390 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-14 16:50:58,302 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-14 16:50:59,061 WARN L179 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2018-10-14 16:50:59,678 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-10-14 16:51:00,168 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:51:00,792 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-14 16:51:01,382 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-14 16:51:01,797 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-14 16:51:02,178 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-14 16:51:02,587 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 16:51:03,224 WARN L179 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-14 16:51:03,839 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-14 16:51:04,283 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 16:51:04,619 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 16:51:05,081 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 16:51:05,484 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 16:51:06,075 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-14 16:51:06,473 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:51:06,807 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-14 16:51:07,189 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-14 16:51:07,740 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-14 16:51:08,301 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 16:51:08,693 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 16:51:09,015 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-14 16:51:09,401 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 16:51:09,897 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-14 16:51:10,515 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 16:51:10,863 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-14 16:51:11,164 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 16:51:11,513 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-14 16:51:11,992 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2018-10-14 16:51:12,517 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 16:51:12,858 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-14 16:51:13,167 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 16:51:13,535 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 16:51:14,178 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 16:51:14,500 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 16:51:15,240 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 16:51:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:15,358 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-14 16:51:15,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-14 16:51:15,359 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 183 [2018-10-14 16:51:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:15,361 INFO L225 Difference]: With dead ends: 208 [2018-10-14 16:51:15,361 INFO L226 Difference]: Without dead ends: 208 [2018-10-14 16:51:15,366 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 [2018-10-14 16:51:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-14 16:51:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-14 16:51:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-14 16:51:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-14 16:51:15,372 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-14 16:51:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:15,372 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-14 16:51:15,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 16:51:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-14 16:51:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-14 16:51:15,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:15,377 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] [2018-10-14 16:51:15,377 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:15,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 187240911, now seen corresponding path program 10 times [2018-10-14 16:51:15,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:16,728 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 16:51:17,142 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 16:51:17,589 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 16:51:18,035 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 16:51:18,473 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 16:51:18,917 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 16:51:19,365 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-14 16:51:19,863 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-14 16:51:20,431 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-14 16:51:20,934 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 16:51:21,412 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 16:51:21,912 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 16:51:22,438 WARN L179 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-14 16:51:22,852 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-14 16:51:23,240 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 16:51:23,638 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 16:51:24,030 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-14 16:51:24,426 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-14 16:51:24,697 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 16:51:24,971 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:51:25,240 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:51:25,566 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 16:51:25,820 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 16:51:26,018 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-14 16:51:26,765 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-14 16:51:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:29,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:29,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 16:51:29,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 16:51:29,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 16:51:29,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 16:51:29,265 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 63 states. [2018-10-14 16:51:30,503 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-14 16:51:30,853 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 16:51:31,275 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 16:51:31,725 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 16:51:32,248 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 16:51:32,736 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 16:51:33,107 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 16:51:33,527 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 16:51:33,973 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-14 16:51:34,489 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 16:51:34,944 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 16:51:35,532 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 187 [2018-10-14 16:51:36,243 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-14 16:51:37,041 WARN L179 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-14 16:51:37,908 WARN L179 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-14 16:51:38,737 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-14 16:51:39,357 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-14 16:51:40,012 WARN L179 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-14 16:51:40,734 WARN L179 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-14 16:51:41,558 WARN L179 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-14 16:51:42,355 WARN L179 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-14 16:51:42,913 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-14 16:51:43,529 WARN L179 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-14 16:51:44,180 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-14 16:51:44,870 WARN L179 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-14 16:51:45,586 WARN L179 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 188 [2018-10-14 16:51:46,229 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2018-10-14 16:51:46,835 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 174 [2018-10-14 16:51:47,504 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2018-10-14 16:51:48,219 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-14 16:51:48,939 WARN L179 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-14 16:51:49,495 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-14 16:51:50,082 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-14 16:51:50,745 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-14 16:51:51,529 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-14 16:51:52,247 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 181 [2018-10-14 16:51:52,795 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2018-10-14 16:51:53,381 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2018-10-14 16:51:53,963 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-14 16:51:54,567 WARN L179 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-14 16:51:55,207 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-14 16:51:55,743 WARN L179 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2018-10-14 16:51:56,380 WARN L179 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-14 16:51:56,940 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2018-10-14 16:51:57,526 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-14 16:51:58,129 WARN L179 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-14 16:51:58,661 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-14 16:51:59,193 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-14 16:51:59,590 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-14 16:51:59,949 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 16:51:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:59,972 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-14 16:51:59,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 16:51:59,973 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 196 [2018-10-14 16:51:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:59,974 INFO L225 Difference]: With dead ends: 221 [2018-10-14 16:51:59,974 INFO L226 Difference]: Without dead ends: 221 [2018-10-14 16:51:59,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 41.9s TimeCoverageRelationStatistics Valid=2873, Invalid=11647, Unknown=0, NotChecked=0, Total=14520 [2018-10-14 16:51:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-14 16:51:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-14 16:51:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-14 16:51:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-14 16:51:59,980 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-14 16:51:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:59,980 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-14 16:51:59,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 16:51:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-14 16:51:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-14 16:51:59,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:59,982 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] [2018-10-14 16:51:59,982 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:59,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:59,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1241963577, now seen corresponding path program 11 times [2018-10-14 16:51:59,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:01,512 WARN L179 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-14 16:52:02,139 WARN L179 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 16:52:02,755 WARN L179 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 16:52:03,384 WARN L179 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-14 16:52:04,004 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 16:52:04,629 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 16:52:05,256 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-14 16:52:05,940 WARN L179 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-14 16:52:06,781 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-14 16:52:07,450 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 16:52:08,160 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 16:52:08,834 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-14 16:52:09,494 WARN L179 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-14 16:52:10,030 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-14 16:52:10,565 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 16:52:11,092 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 16:52:11,696 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 16:52:12,309 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-14 16:52:12,636 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 16:52:12,960 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 16:52:13,258 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 16:52:13,556 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-14 16:52:13,907 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-14 16:52:14,148 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 16:52:14,392 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 16:52:14,662 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 16:52:14,927 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-14 16:52:15,235 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-14 16:52:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:19,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:19,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 16:52:19,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 16:52:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 16:52:19,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:52:19,066 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 67 states. [2018-10-14 16:52:21,693 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 16:52:22,245 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 16:52:22,843 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-14 16:52:23,689 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 16:52:24,310 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-14 16:52:24,760 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:52:25,320 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-14 16:52:26,156 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-14 16:52:27,309 WARN L179 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2018-10-14 16:52:28,159 WARN L179 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-14 16:52:28,803 WARN L179 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2018-10-14 16:52:29,510 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-14 16:52:30,380 WARN L179 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-14 16:52:31,490 WARN L179 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2018-10-14 16:52:32,529 WARN L179 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 214 [2018-10-14 16:52:33,141 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2018-10-14 16:52:33,875 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-14 16:52:34,721 WARN L179 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-14 16:52:35,631 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2018-10-14 16:52:36,617 WARN L179 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-14 16:52:37,303 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2018-10-14 16:52:37,955 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2018-10-14 16:52:38,715 WARN L179 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 197 [2018-10-14 16:52:39,561 WARN L179 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200 [2018-10-14 16:52:40,418 WARN L179 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 203 [2018-10-14 16:52:41,060 WARN L179 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2018-10-14 16:52:41,734 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-14 16:52:42,613 WARN L179 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2018-10-14 16:52:43,570 WARN L179 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2018-10-14 16:52:44,526 WARN L179 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2018-10-14 16:52:45,165 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-14 16:52:45,816 WARN L179 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-14 16:52:46,582 WARN L179 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 184 [2018-10-14 16:52:47,467 WARN L179 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2018-10-14 16:52:48,295 WARN L179 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2018-10-14 16:52:48,908 WARN L179 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-14 16:52:49,524 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2018-10-14 16:52:50,264 WARN L179 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2018-10-14 16:52:51,041 WARN L179 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2018-10-14 16:52:51,827 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 189 [2018-10-14 16:52:52,468 WARN L179 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2018-10-14 16:52:53,096 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 168 [2018-10-14 16:52:53,783 WARN L179 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-14 16:52:54,498 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 177 [2018-10-14 16:52:55,243 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-14 16:52:55,860 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-14 16:52:56,464 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2018-10-14 16:52:57,104 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-14 16:52:57,869 WARN L179 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2018-10-14 16:52:58,563 WARN L179 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-14 16:52:59,188 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-14 16:52:59,776 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-10-14 16:53:00,210 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 16:53:00,617 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-14 16:53:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:00,691 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-14 16:53:00,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:53:00,692 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 209 [2018-10-14 16:53:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:00,694 INFO L225 Difference]: With dead ends: 234 [2018-10-14 16:53:00,694 INFO L226 Difference]: Without dead ends: 234 [2018-10-14 16:53:00,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3370 ImplicationChecksByTransitivity, 55.5s TimeCoverageRelationStatistics Valid=3233, Invalid=13537, Unknown=0, NotChecked=0, Total=16770 [2018-10-14 16:53:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-14 16:53:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-14 16:53:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-14 16:53:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-14 16:53:00,699 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-14 16:53:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:00,700 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-14 16:53:00,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 16:53:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-14 16:53:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-14 16:53:00,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:00,701 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] [2018-10-14 16:53:00,702 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:00,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1630981647, now seen corresponding path program 12 times [2018-10-14 16:53:00,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:03,245 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 393 DAG size of output: 76 [2018-10-14 16:53:04,281 WARN L179 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-14 16:53:05,362 WARN L179 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-14 16:53:06,462 WARN L179 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 74 [2018-10-14 16:53:07,575 WARN L179 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-14 16:53:08,766 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-14 16:53:09,858 WARN L179 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-14 16:53:11,098 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 398 DAG size of output: 83 [2018-10-14 16:53:12,339 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 411 DAG size of output: 85 [2018-10-14 16:53:13,602 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-14 16:53:14,820 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-14 16:53:16,031 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 393 DAG size of output: 78 [2018-10-14 16:53:17,028 WARN L179 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 76 [2018-10-14 16:53:17,888 WARN L179 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2018-10-14 16:53:18,772 WARN L179 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-14 16:53:19,576 WARN L179 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-14 16:53:20,392 WARN L179 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 72 [2018-10-14 16:53:21,180 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-14 16:53:21,714 WARN L179 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-14 16:53:22,225 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 16:53:22,738 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 16:53:23,320 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 16:53:23,891 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-14 16:53:24,299 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-14 16:53:24,699 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 16:53:25,112 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 16:53:25,510 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-14 16:53:25,904 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-14 16:53:26,182 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 16:53:26,464 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:53:26,746 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:53:27,021 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 16:53:27,263 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 16:53:28,313 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-14 16:53:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:31,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:31,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 16:53:31,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 16:53:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 16:53:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4652, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:53:31,536 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 73 states. [2018-10-14 16:53:34,094 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 16:53:34,498 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 16:53:35,085 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 16:53:35,746 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-14 16:53:36,701 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-14 16:53:37,439 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-14 16:53:37,970 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 16:53:38,654 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-14 16:53:39,259 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-14 16:53:40,054 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-14 16:53:40,631 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-14 16:53:41,348 WARN L179 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 217 [2018-10-14 16:53:42,192 WARN L179 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 211 [2018-10-14 16:53:43,137 WARN L179 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 226 [2018-10-14 16:53:44,412 WARN L179 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 229 [2018-10-14 16:53:45,487 WARN L179 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 232 [2018-10-14 16:53:46,211 WARN L179 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 217 [2018-10-14 16:53:47,068 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 210 [2018-10-14 16:53:48,046 WARN L179 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-14 16:53:49,126 WARN L179 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-14 16:53:50,159 WARN L179 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 246 [2018-10-14 16:53:50,859 WARN L179 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 210 [2018-10-14 16:53:51,621 WARN L179 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-14 16:53:52,510 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-14 16:53:53,436 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-14 16:53:54,503 WARN L179 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 221 [2018-10-14 16:53:55,181 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2018-10-14 16:53:55,946 WARN L179 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-14 16:53:56,786 WARN L179 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 219 [2018-10-14 16:53:57,689 WARN L179 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2018-10-14 16:53:58,635 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-14 16:53:59,395 WARN L179 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2018-10-14 16:54:00,139 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2018-10-14 16:54:00,934 WARN L179 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-14 16:54:01,772 WARN L179 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-14 16:54:02,627 WARN L179 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2018-10-14 16:54:03,295 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2018-10-14 16:54:04,025 WARN L179 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-14 16:54:04,901 WARN L179 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-14 16:54:05,784 WARN L179 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-14 16:54:06,653 WARN L179 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-14 16:54:07,322 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-14 16:54:08,006 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2018-10-14 16:54:08,798 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-14 16:54:09,729 WARN L179 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-14 16:54:10,574 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-14 16:54:11,248 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-14 16:54:11,945 WARN L179 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-14 16:54:12,668 WARN L179 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 184 [2018-10-14 16:54:13,452 WARN L179 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2018-10-14 16:54:14,225 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-14 16:54:14,974 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 173 [2018-10-14 16:54:15,654 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-14 16:54:16,356 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 176 [2018-10-14 16:54:17,085 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-14 16:54:17,822 WARN L179 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-14 16:54:18,457 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-14 16:54:19,102 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-14 16:54:19,612 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-14 16:54:20,076 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-14 16:54:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:20,151 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-14 16:54:20,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 16:54:20,151 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 222 [2018-10-14 16:54:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:20,153 INFO L225 Difference]: With dead ends: 247 [2018-10-14 16:54:20,153 INFO L226 Difference]: Without dead ends: 247 [2018-10-14 16:54:20,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 73.4s TimeCoverageRelationStatistics Valid=3886, Invalid=15854, Unknown=0, NotChecked=0, Total=19740 [2018-10-14 16:54:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-14 16:54:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-14 16:54:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-14 16:54:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-14 16:54:20,159 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-14 16:54:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:20,160 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-14 16:54:20,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 16:54:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-14 16:54:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-14 16:54:20,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:20,161 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] [2018-10-14 16:54:20,162 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:20,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1218250745, now seen corresponding path program 13 times [2018-10-14 16:54:20,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:23,005 WARN L179 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-14 16:54:24,489 WARN L179 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 16:54:25,978 WARN L179 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 16:54:27,378 WARN L179 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-14 16:54:28,770 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 16:54:30,274 WARN L179 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 16:54:31,712 WARN L179 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-14 16:54:33,439 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 559 DAG size of output: 88 [2018-10-14 16:54:35,260 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 572 DAG size of output: 90 [2018-10-14 16:54:36,937 WARN L179 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-14 16:54:38,652 WARN L179 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-14 16:54:40,419 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 554 DAG size of output: 83 [2018-10-14 16:54:41,829 WARN L179 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 398 DAG size of output: 81 [2018-10-14 16:54:42,977 WARN L179 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 82 [2018-10-14 16:54:44,103 WARN L179 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-14 16:54:45,341 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-14 16:54:46,489 WARN L179 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 77 [2018-10-14 16:54:47,512 WARN L179 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 75 [2018-10-14 16:54:48,246 WARN L179 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-14 16:54:48,979 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 16:54:49,696 WARN L179 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 16:54:50,520 WARN L179 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-14 16:54:51,232 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-14 16:54:51,800 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-14 16:54:52,356 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 16:54:52,923 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 16:54:53,493 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 16:54:54,093 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-14 16:54:54,423 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 16:54:54,755 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 16:54:55,090 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 16:54:55,504 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-14 16:54:55,900 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-14 16:54:56,163 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 16:54:56,423 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 16:54:56,680 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 16:54:56,947 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-14 16:54:57,240 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-14 16:55:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:55:01,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:55:01,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-14 16:55:01,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-14 16:55:01,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-14 16:55:01,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2018-10-14 16:55:01,860 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 77 states. [2018-10-14 16:55:04,560 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-14 16:55:04,995 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 16:55:05,681 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 16:55:06,431 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-14 16:55:07,448 WARN L179 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-14 16:55:08,188 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-14 16:55:08,772 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 16:55:09,462 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-14 16:55:10,529 WARN L179 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-14 16:55:11,954 WARN L179 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 242 [2018-10-14 16:55:13,110 WARN L179 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 245 [2018-10-14 16:55:13,909 WARN L179 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2018-10-14 16:55:14,834 WARN L179 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 229 [2018-10-14 16:55:15,865 WARN L179 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 236 [2018-10-14 16:55:17,204 WARN L179 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 239 [2018-10-14 16:55:18,411 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 264 DAG size of output: 242 [2018-10-14 16:55:19,166 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 231 [2018-10-14 16:55:20,072 WARN L179 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2018-10-14 16:55:21,284 WARN L179 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 262 [2018-10-14 16:55:22,683 WARN L179 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 263 [2018-10-14 16:55:23,970 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 287 DAG size of output: 266 [2018-10-14 16:55:24,747 WARN L179 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 225 [2018-10-14 16:55:25,631 WARN L179 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-14 16:55:26,773 WARN L179 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 230 [2018-10-14 16:55:28,102 WARN L179 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 233 [2018-10-14 16:55:29,317 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 261 DAG size of output: 236 [2018-10-14 16:55:30,087 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 225 [2018-10-14 16:55:30,988 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-14 16:55:32,108 WARN L179 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 246 [2018-10-14 16:55:33,228 WARN L179 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 247 [2018-10-14 16:55:34,400 WARN L179 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 250 [2018-10-14 16:55:35,216 WARN L179 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 218 [2018-10-14 16:55:36,149 WARN L179 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 213 [2018-10-14 16:55:37,211 WARN L179 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 218 [2018-10-14 16:55:38,250 WARN L179 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2018-10-14 16:55:39,304 WARN L179 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 224 [2018-10-14 16:55:40,075 WARN L179 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 213 [2018-10-14 16:55:40,882 WARN L179 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-14 16:55:41,962 WARN L179 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 228 [2018-10-14 16:55:43,066 WARN L179 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 229 [2018-10-14 16:55:44,232 WARN L179 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 232 [2018-10-14 16:55:44,994 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 206 [2018-10-14 16:55:45,824 WARN L179 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2018-10-14 16:55:46,803 WARN L179 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2018-10-14 16:55:47,798 WARN L179 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-10-14 16:55:48,825 WARN L179 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 212 [2018-10-14 16:55:49,576 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 201 [2018-10-14 16:55:50,398 WARN L179 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2018-10-14 16:55:51,288 WARN L179 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2018-10-14 16:55:52,289 WARN L179 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 211 [2018-10-14 16:55:53,250 WARN L179 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 214 [2018-10-14 16:55:53,974 WARN L179 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-14 16:55:54,733 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-14 16:55:55,543 WARN L179 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-14 16:55:56,361 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-14 16:55:57,277 WARN L179 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2018-10-14 16:55:57,954 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2018-10-14 16:55:58,659 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-14 16:55:59,362 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-14 16:56:00,118 WARN L179 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2018-10-14 16:56:00,860 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-14 16:56:01,541 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-14 16:56:02,322 WARN L179 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-14 16:56:02,832 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 16:56:03,303 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 16:56:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:56:03,382 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-14 16:56:03,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-14 16:56:03,382 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 235 [2018-10-14 16:56:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:56:03,384 INFO L225 Difference]: With dead ends: 260 [2018-10-14 16:56:03,384 INFO L226 Difference]: Without dead ends: 260 [2018-10-14 16:56:03,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=3811, Invalid=18539, Unknown=0, NotChecked=0, Total=22350 [2018-10-14 16:56:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-14 16:56:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 249. [2018-10-14 16:56:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-14 16:56:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-14 16:56:03,390 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 235 [2018-10-14 16:56:03,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:56:03,390 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-14 16:56:03,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-14 16:56:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-14 16:56:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-14 16:56:03,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:56:03,392 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] [2018-10-14 16:56:03,392 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:56:03,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:56:03,393 INFO L82 PathProgramCache]: Analyzing trace with hash -308954545, now seen corresponding path program 14 times [2018-10-14 16:56:03,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:56:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:56:08,196 WARN L179 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 808 DAG size of output: 86 [2018-10-14 16:56:10,771 WARN L179 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-14 16:56:13,536 WARN L179 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-14 16:56:16,169 WARN L179 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 806 DAG size of output: 88 [2018-10-14 16:56:18,905 WARN L179 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-14 16:56:21,596 WARN L179 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-14 16:56:24,373 WARN L179 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 801 DAG size of output: 81 [2018-10-14 16:56:27,386 WARN L179 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 815 DAG size of output: 97 [2018-10-14 16:56:30,516 WARN L179 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 828 DAG size of output: 99 [2018-10-14 16:56:33,524 WARN L179 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 812 DAG size of output: 94 [2018-10-14 16:56:36,512 WARN L179 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 812 DAG size of output: 94 [2018-10-14 16:56:39,509 WARN L179 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 810 DAG size of output: 92 [2018-10-14 16:56:41,782 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 576 DAG size of output: 87 [2018-10-14 16:56:43,694 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 558 DAG size of output: 88 [2018-10-14 16:56:45,575 WARN L179 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-14 16:56:47,449 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-14 16:56:49,406 WARN L179 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 553 DAG size of output: 83 [2018-10-14 16:56:51,026 WARN L179 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 434 DAG size of output: 84 [2018-10-14 16:56:52,301 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 398 DAG size of output: 83 [2018-10-14 16:56:53,640 WARN L179 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-14 16:56:54,902 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-14 16:56:56,130 WARN L179 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 78 [2018-10-14 16:56:57,157 WARN L179 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 76 [2018-10-14 16:56:58,008 WARN L179 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2018-10-14 16:56:58,931 WARN L179 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-14 16:56:59,753 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-14 16:57:00,585 WARN L179 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 72 [2018-10-14 16:57:01,401 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-14 16:57:01,947 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-14 16:57:02,493 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 16:57:03,053 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 16:57:03,676 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 16:57:04,250 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-14 16:57:04,688 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-14 16:57:05,129 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 16:57:05,559 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 16:57:05,993 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-14 16:57:06,448 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-14 16:57:06,757 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 16:57:07,068 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:57:07,374 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 16:57:07,675 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 16:57:07,946 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 16:57:08,185 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-14 16:57:08,454 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 16:57:08,747 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 16:57:09,215 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-14 16:57:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:57:12,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:57:12,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-14 16:57:12,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-14 16:57:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-14 16:57:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=5983, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:57:12,938 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 83 states. [2018-10-14 16:57:14,850 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 16:57:15,284 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 16:57:15,922 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-14 16:57:16,625 WARN L179 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2018-10-14 16:57:17,514 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2018-10-14 16:57:18,300 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-14 16:57:18,915 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-14 16:57:20,165 WARN L179 SmtUtils]: Spent 921.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-14 16:57:20,860 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-14 16:57:21,689 WARN L179 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2018-10-14 16:57:22,386 WARN L179 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2018-10-14 16:57:23,245 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 248 [2018-10-14 16:57:24,228 WARN L179 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 244 [2018-10-14 16:57:25,348 WARN L179 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2018-10-14 16:57:26,644 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 263 DAG size of output: 260 [2018-10-14 16:57:27,924 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 266 DAG size of output: 263 [2018-10-14 16:57:28,768 WARN L179 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 246 [2018-10-14 16:57:29,770 WARN L179 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2018-10-14 16:57:30,916 WARN L179 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 278 [2018-10-14 16:57:32,170 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2018-10-14 16:57:33,458 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 287 DAG size of output: 284 [2018-10-14 16:57:34,276 WARN L179 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 241 [2018-10-14 16:57:35,209 WARN L179 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2018-10-14 16:57:36,290 WARN L179 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 244 [2018-10-14 16:57:37,453 WARN L179 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 247 [2018-10-14 16:57:38,600 WARN L179 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 250 [2018-10-14 16:57:39,445 WARN L179 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-14 16:57:40,359 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 228 [2018-10-14 16:57:41,437 WARN L179 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-14 16:57:42,508 WARN L179 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-14 16:57:43,643 WARN L179 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-14 16:57:44,462 WARN L179 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 228 [2018-10-14 16:57:45,353 WARN L179 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-14 16:57:46,373 WARN L179 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-14 16:57:47,439 WARN L179 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2018-10-14 16:57:48,528 WARN L179 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 239 [2018-10-14 16:57:49,337 WARN L179 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2018-10-14 16:57:50,254 WARN L179 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2018-10-14 16:57:51,183 WARN L179 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2018-10-14 16:57:52,179 WARN L179 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-14 16:57:53,204 WARN L179 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-14 16:57:54,012 WARN L179 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 216 [2018-10-14 16:57:54,861 WARN L179 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-14 16:57:55,783 WARN L179 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2018-10-14 16:57:56,749 WARN L179 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2018-10-14 16:57:57,714 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224