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/alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:27:03,809 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:27:03,811 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:27:03,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:27:03,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:27:03,824 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:27:03,825 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:27:03,827 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:27:03,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:27:03,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:27:03,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:27:03,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:27:03,831 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:27:03,832 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:27:03,834 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:27:03,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:27:03,835 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:27:03,837 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:27:03,839 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:27:03,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:27:03,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:27:03,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:27:03,845 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:27:03,854 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:27:03,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:27:03,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:27:03,868 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:27:03,868 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:27:03,868 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:27:03,868 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:27:03,869 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:27:03,869 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:27:03,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:27:03,870 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:27:03,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:27:03,870 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:27:03,870 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:27:03,871 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:27:03,871 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:27:03,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:27:03,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:27:03,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:27:03,931 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:27:03,933 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:27:03,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl [2018-10-10 15:27:03,934 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl' [2018-10-10 15:27:04,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:27:04,018 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:27:04,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:27:04,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:27:04,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:27:04,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... [2018-10-10 15:27:04,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:27:04,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:27:04,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:27:04,110 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:27:04,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:27:04,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:27:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:27:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:27:05,154 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:27:05,155 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:27:05 BoogieIcfgContainer [2018-10-10 15:27:05,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:27:05,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:27:05,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:27:05,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:27:05,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:04" (1/2) ... [2018-10-10 15:27:05,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c5a883 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:27:05, skipping insertion in model container [2018-10-10 15:27:05,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:27:05" (2/2) ... [2018-10-10 15:27:05,164 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_45.bpl [2018-10-10 15:27:05,174 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:27:05,185 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:27:05,202 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:27:05,233 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:27:05,233 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:27:05,234 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:27:05,234 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:27:05,234 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:27:05,234 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:27:05,234 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:27:05,234 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:27:05,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:27:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-10-10 15:27:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-10 15:27:05,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:05,266 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] [2018-10-10 15:27:05,267 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:05,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1179044604, now seen corresponding path program 1 times [2018-10-10 15:27:05,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:05,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:05,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 15:27:05,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:27:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:27:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:27:05,761 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 7 states. [2018-10-10 15:27:06,584 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:27:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:07,138 INFO L93 Difference]: Finished difference Result 253 states and 260 transitions. [2018-10-10 15:27:07,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:27:07,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-10 15:27:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:07,157 INFO L225 Difference]: With dead ends: 253 [2018-10-10 15:27:07,157 INFO L226 Difference]: Without dead ends: 253 [2018-10-10 15:27:07,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:27:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-10 15:27:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 143. [2018-10-10 15:27:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-10 15:27:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2018-10-10 15:27:07,220 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 36 [2018-10-10 15:27:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:07,220 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2018-10-10 15:27:07,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:27:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2018-10-10 15:27:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-10 15:27:07,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:07,227 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:27:07,227 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:07,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:07,228 INFO L82 PathProgramCache]: Analyzing trace with hash -10120009, now seen corresponding path program 1 times [2018-10-10 15:27:07,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:07,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:07,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:27:07,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:27:07,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:27:07,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:07,375 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 3 states. [2018-10-10 15:27:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:07,506 INFO L93 Difference]: Finished difference Result 221 states and 226 transitions. [2018-10-10 15:27:07,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:27:07,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-10-10 15:27:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:07,512 INFO L225 Difference]: With dead ends: 221 [2018-10-10 15:27:07,512 INFO L226 Difference]: Without dead ends: 221 [2018-10-10 15:27:07,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-10 15:27:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 198. [2018-10-10 15:27:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-10 15:27:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 204 transitions. [2018-10-10 15:27:07,535 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 204 transitions. Word has length 68 [2018-10-10 15:27:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:07,536 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 204 transitions. [2018-10-10 15:27:07,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:27:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 204 transitions. [2018-10-10 15:27:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-10 15:27:07,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:07,545 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:27:07,545 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:07,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2048011895, now seen corresponding path program 1 times [2018-10-10 15:27:07,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:07,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:07,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:27:07,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:27:07,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:27:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:27:07,808 INFO L87 Difference]: Start difference. First operand 198 states and 204 transitions. Second operand 9 states. [2018-10-10 15:27:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:08,581 INFO L93 Difference]: Finished difference Result 290 states and 295 transitions. [2018-10-10 15:27:08,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:27:08,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-10-10 15:27:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:08,586 INFO L225 Difference]: With dead ends: 290 [2018-10-10 15:27:08,586 INFO L226 Difference]: Without dead ends: 258 [2018-10-10 15:27:08,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:27:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-10 15:27:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2018-10-10 15:27:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-10 15:27:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2018-10-10 15:27:08,614 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 68 [2018-10-10 15:27:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:08,614 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2018-10-10 15:27:08,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:27:08,615 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2018-10-10 15:27:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:27:08,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:08,618 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:08,619 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:08,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1671647240, now seen corresponding path program 1 times [2018-10-10 15:27:08,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:08,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:08,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-10 15:27:08,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 15:27:08,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 15:27:08,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-10 15:27:08,765 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand 8 states. [2018-10-10 15:27:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:09,408 INFO L93 Difference]: Finished difference Result 417 states and 426 transitions. [2018-10-10 15:27:09,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:27:09,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-10-10 15:27:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:09,412 INFO L225 Difference]: With dead ends: 417 [2018-10-10 15:27:09,412 INFO L226 Difference]: Without dead ends: 417 [2018-10-10 15:27:09,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-10 15:27:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-10-10 15:27:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 241. [2018-10-10 15:27:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-10 15:27:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 247 transitions. [2018-10-10 15:27:09,429 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 247 transitions. Word has length 79 [2018-10-10 15:27:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:09,430 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 247 transitions. [2018-10-10 15:27:09,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 15:27:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 247 transitions. [2018-10-10 15:27:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-10 15:27:09,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:09,434 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:09,434 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:09,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:09,434 INFO L82 PathProgramCache]: Analyzing trace with hash -773006997, now seen corresponding path program 1 times [2018-10-10 15:27:09,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:10,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:10,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-10 15:27:10,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-10 15:27:10,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-10 15:27:10,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:27:10,071 INFO L87 Difference]: Start difference. First operand 241 states and 247 transitions. Second operand 20 states. [2018-10-10 15:27:11,794 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2018-10-10 15:27:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:13,975 INFO L93 Difference]: Finished difference Result 531 states and 542 transitions. [2018-10-10 15:27:13,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:27:13,975 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2018-10-10 15:27:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:13,979 INFO L225 Difference]: With dead ends: 531 [2018-10-10 15:27:13,979 INFO L226 Difference]: Without dead ends: 531 [2018-10-10 15:27:13,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2018-10-10 15:27:13,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-10 15:27:13,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 273. [2018-10-10 15:27:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-10-10 15:27:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 279 transitions. [2018-10-10 15:27:13,992 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 279 transitions. Word has length 111 [2018-10-10 15:27:13,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:13,992 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 279 transitions. [2018-10-10 15:27:13,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-10 15:27:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 279 transitions. [2018-10-10 15:27:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-10 15:27:13,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:13,995 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:13,995 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:13,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:13,996 INFO L82 PathProgramCache]: Analyzing trace with hash -830475420, now seen corresponding path program 1 times [2018-10-10 15:27:13,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-10 15:27:14,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:14,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-10 15:27:14,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 15:27:14,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 15:27:14,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-10 15:27:14,254 INFO L87 Difference]: Start difference. First operand 273 states and 279 transitions. Second operand 10 states. [2018-10-10 15:27:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:14,872 INFO L93 Difference]: Finished difference Result 418 states and 427 transitions. [2018-10-10 15:27:14,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-10 15:27:14,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2018-10-10 15:27:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:14,877 INFO L225 Difference]: With dead ends: 418 [2018-10-10 15:27:14,877 INFO L226 Difference]: Without dead ends: 418 [2018-10-10 15:27:14,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:27:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-10-10 15:27:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 275. [2018-10-10 15:27:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-10 15:27:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 281 transitions. [2018-10-10 15:27:14,885 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 281 transitions. Word has length 122 [2018-10-10 15:27:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:14,885 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 281 transitions. [2018-10-10 15:27:14,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 15:27:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 281 transitions. [2018-10-10 15:27:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-10 15:27:14,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:14,888 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:14,888 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:14,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:14,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1641405726, now seen corresponding path program 1 times [2018-10-10 15:27:14,890 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:15,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:15,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-10 15:27:15,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-10 15:27:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-10 15:27:15,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:27:15,472 INFO L87 Difference]: Start difference. First operand 275 states and 281 transitions. Second operand 21 states. [2018-10-10 15:27:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:17,978 INFO L93 Difference]: Finished difference Result 421 states and 428 transitions. [2018-10-10 15:27:17,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-10 15:27:17,979 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 143 [2018-10-10 15:27:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:17,981 INFO L225 Difference]: With dead ends: 421 [2018-10-10 15:27:17,981 INFO L226 Difference]: Without dead ends: 369 [2018-10-10 15:27:17,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=463, Invalid=1793, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:27:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-10-10 15:27:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 230. [2018-10-10 15:27:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-10 15:27:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 235 transitions. [2018-10-10 15:27:17,988 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 235 transitions. Word has length 143 [2018-10-10 15:27:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:17,989 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 235 transitions. [2018-10-10 15:27:17,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-10 15:27:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 235 transitions. [2018-10-10 15:27:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-10 15:27:17,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:17,991 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:17,991 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:17,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1162308823, now seen corresponding path program 1 times [2018-10-10 15:27:17,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:18,800 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:19,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:19,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-10 15:27:19,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-10 15:27:19,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-10 15:27:19,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2018-10-10 15:27:19,499 INFO L87 Difference]: Start difference. First operand 230 states and 235 transitions. Second operand 28 states. [2018-10-10 15:27:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:25,320 INFO L93 Difference]: Finished difference Result 522 states and 534 transitions. [2018-10-10 15:27:25,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-10 15:27:25,321 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2018-10-10 15:27:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:25,325 INFO L225 Difference]: With dead ends: 522 [2018-10-10 15:27:25,325 INFO L226 Difference]: Without dead ends: 522 [2018-10-10 15:27:25,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=628, Invalid=4342, Unknown=0, NotChecked=0, Total=4970 [2018-10-10 15:27:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-10 15:27:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 359. [2018-10-10 15:27:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-10 15:27:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 367 transitions. [2018-10-10 15:27:25,335 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 367 transitions. Word has length 154 [2018-10-10 15:27:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:25,335 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 367 transitions. [2018-10-10 15:27:25,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-10 15:27:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 367 transitions. [2018-10-10 15:27:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-10 15:27:25,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:25,338 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:25,338 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:25,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:25,339 INFO L82 PathProgramCache]: Analyzing trace with hash -450379638, now seen corresponding path program 1 times [2018-10-10 15:27:25,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:27,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:27,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-10 15:27:27,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-10 15:27:27,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-10 15:27:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1250, Unknown=0, NotChecked=0, Total=1332 [2018-10-10 15:27:27,232 INFO L87 Difference]: Start difference. First operand 359 states and 367 transitions. Second operand 37 states. [2018-10-10 15:27:27,856 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-10 15:27:28,735 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:27:28,997 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:27:29,201 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:27:29,734 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-10-10 15:27:31,343 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-10-10 15:27:31,994 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-10 15:27:34,000 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-10-10 15:27:34,223 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2018-10-10 15:27:34,728 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-10 15:27:35,389 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-10 15:27:35,941 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-10 15:27:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:37,123 INFO L93 Difference]: Finished difference Result 568 states and 581 transitions. [2018-10-10 15:27:37,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-10 15:27:37,124 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 186 [2018-10-10 15:27:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:37,126 INFO L225 Difference]: With dead ends: 568 [2018-10-10 15:27:37,127 INFO L226 Difference]: Without dead ends: 568 [2018-10-10 15:27:37,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=971, Invalid=9129, Unknown=0, NotChecked=0, Total=10100 [2018-10-10 15:27:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-10 15:27:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 412. [2018-10-10 15:27:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-10-10 15:27:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 421 transitions. [2018-10-10 15:27:37,140 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 421 transitions. Word has length 186 [2018-10-10 15:27:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:37,141 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 421 transitions. [2018-10-10 15:27:37,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-10 15:27:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 421 transitions. [2018-10-10 15:27:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-10 15:27:37,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:37,144 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:37,144 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:37,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:37,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1371823883, now seen corresponding path program 2 times [2018-10-10 15:27:37,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:40,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:40,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 15:27:40,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 15:27:40,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 15:27:40,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2046, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 15:27:40,210 INFO L87 Difference]: Start difference. First operand 412 states and 421 transitions. Second operand 47 states. [2018-10-10 15:27:42,020 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-10 15:27:42,433 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-10 15:27:42,668 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2018-10-10 15:27:43,341 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2018-10-10 15:27:43,609 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2018-10-10 15:27:43,829 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-10 15:27:44,078 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-10 15:27:44,311 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2018-10-10 15:27:44,523 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2018-10-10 15:27:44,787 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2018-10-10 15:27:44,985 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2018-10-10 15:27:45,550 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2018-10-10 15:27:45,983 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-10 15:27:46,333 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2018-10-10 15:27:47,600 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-10 15:27:49,244 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2018-10-10 15:27:49,435 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2018-10-10 15:27:49,989 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:27:50,640 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-10-10 15:27:50,918 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:27:51,265 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:27:51,470 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-10 15:27:51,986 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-10-10 15:27:52,194 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:27:52,772 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-10 15:27:53,086 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-10 15:27:53,418 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-10 15:27:53,766 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 15:27:53,983 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 15:27:54,311 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-10 15:27:54,880 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-10 15:27:55,062 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-10 15:27:55,866 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:27:56,105 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-10-10 15:27:56,516 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-10 15:27:56,762 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-10 15:27:57,030 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-10 15:27:57,220 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:27:57,791 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-10 15:27:58,333 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:27:58,519 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-10 15:27:58,716 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-10 15:27:59,023 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-10 15:27:59,192 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-10-10 15:27:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:59,231 INFO L93 Difference]: Finished difference Result 826 states and 841 transitions. [2018-10-10 15:27:59,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-10 15:27:59,232 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 197 [2018-10-10 15:27:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:59,237 INFO L225 Difference]: With dead ends: 826 [2018-10-10 15:27:59,237 INFO L226 Difference]: Without dead ends: 826 [2018-10-10 15:27:59,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7014 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=2557, Invalid=21005, Unknown=0, NotChecked=0, Total=23562 [2018-10-10 15:27:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-10-10 15:27:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 477. [2018-10-10 15:27:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-10-10 15:27:59,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 487 transitions. [2018-10-10 15:27:59,256 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 487 transitions. Word has length 197 [2018-10-10 15:27:59,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:59,256 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 487 transitions. [2018-10-10 15:27:59,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 15:27:59,257 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 487 transitions. [2018-10-10 15:27:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-10 15:27:59,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:59,259 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:59,260 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:59,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash 399706315, now seen corresponding path program 3 times [2018-10-10 15:27:59,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-10 15:27:59,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:59,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:27:59,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:27:59,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:27:59,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:59,357 INFO L87 Difference]: Start difference. First operand 477 states and 487 transitions. Second operand 3 states. [2018-10-10 15:27:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:59,511 INFO L93 Difference]: Finished difference Result 449 states and 453 transitions. [2018-10-10 15:27:59,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:27:59,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2018-10-10 15:27:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:59,513 INFO L225 Difference]: With dead ends: 449 [2018-10-10 15:27:59,513 INFO L226 Difference]: Without dead ends: 449 [2018-10-10 15:27:59,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-10-10 15:27:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 436. [2018-10-10 15:27:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-10-10 15:27:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 441 transitions. [2018-10-10 15:27:59,522 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 441 transitions. Word has length 197 [2018-10-10 15:27:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:59,522 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 441 transitions. [2018-10-10 15:27:59,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:27:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 441 transitions. [2018-10-10 15:27:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-10 15:27:59,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:59,528 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:59,528 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:59,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1870733821, now seen corresponding path program 2 times [2018-10-10 15:27:59,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:01,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:01,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 15:28:01,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 15:28:01,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 15:28:01,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2536, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:28:01,919 INFO L87 Difference]: Start difference. First operand 436 states and 441 transitions. Second operand 52 states. [2018-10-10 15:28:02,837 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:28:03,050 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-10 15:28:03,284 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:28:03,789 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:28:03,949 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:28:04,212 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:28:04,509 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:28:04,824 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-10 15:28:05,633 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:28:05,835 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:28:06,248 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-10 15:28:06,512 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:28:09,650 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-10 15:28:09,873 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-10 15:28:10,087 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-10 15:28:10,426 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:28:10,633 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-10 15:28:10,883 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:28:11,156 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2018-10-10 15:28:11,385 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:28:11,624 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2018-10-10 15:28:11,854 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:28:12,352 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-10 15:28:12,660 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-10 15:28:12,992 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2018-10-10 15:28:13,396 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:28:13,654 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:28:13,936 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-10 15:28:14,885 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2018-10-10 15:28:16,665 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:28:17,027 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2018-10-10 15:28:17,312 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-10 15:28:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:17,635 INFO L93 Difference]: Finished difference Result 457 states and 461 transitions. [2018-10-10 15:28:17,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-10 15:28:17,636 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 218 [2018-10-10 15:28:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:17,638 INFO L225 Difference]: With dead ends: 457 [2018-10-10 15:28:17,638 INFO L226 Difference]: Without dead ends: 361 [2018-10-10 15:28:17,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3373 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1252, Invalid=14498, Unknown=0, NotChecked=0, Total=15750 [2018-10-10 15:28:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-10 15:28:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-10-10 15:28:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-10 15:28:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 365 transitions. [2018-10-10 15:28:17,650 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 365 transitions. Word has length 218 [2018-10-10 15:28:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:17,650 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 365 transitions. [2018-10-10 15:28:17,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 15:28:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 365 transitions. [2018-10-10 15:28:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-10 15:28:17,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:17,653 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:17,654 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:17,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2127633730, now seen corresponding path program 3 times [2018-10-10 15:28:17,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:18,540 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:28:18,760 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:28:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:21,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:21,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-10 15:28:21,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-10 15:28:21,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-10 15:28:21,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2421, Unknown=0, NotChecked=0, Total=2550 [2018-10-10 15:28:21,069 INFO L87 Difference]: Start difference. First operand 361 states and 365 transitions. Second operand 51 states. [2018-10-10 15:28:23,168 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 47 [2018-10-10 15:28:23,560 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 56 [2018-10-10 15:28:23,809 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 60 [2018-10-10 15:28:24,153 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 66 [2018-10-10 15:28:24,484 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 70 [2018-10-10 15:28:24,694 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 42 [2018-10-10 15:28:25,074 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 42 [2018-10-10 15:28:25,265 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 44 [2018-10-10 15:28:25,667 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-10 15:28:25,823 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-10 15:28:26,381 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2018-10-10 15:28:26,569 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-10 15:28:26,785 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:28:27,038 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2018-10-10 15:28:27,525 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-10 15:28:27,723 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 15:28:28,008 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2018-10-10 15:28:28,298 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2018-10-10 15:28:28,533 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-10-10 15:28:30,040 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 46 [2018-10-10 15:28:30,985 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 55 [2018-10-10 15:28:31,919 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 58 [2018-10-10 15:28:32,353 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 69 [2018-10-10 15:28:32,723 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 76 [2018-10-10 15:28:33,004 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 83 [2018-10-10 15:28:33,267 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 78 [2018-10-10 15:28:33,526 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 71 [2018-10-10 15:28:33,822 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2018-10-10 15:28:34,079 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 73 [2018-10-10 15:28:36,745 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 58 [2018-10-10 15:28:37,133 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 52 [2018-10-10 15:28:37,391 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 49 [2018-10-10 15:28:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:37,791 INFO L93 Difference]: Finished difference Result 527 states and 530 transitions. [2018-10-10 15:28:37,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-10 15:28:37,791 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 229 [2018-10-10 15:28:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:37,793 INFO L225 Difference]: With dead ends: 527 [2018-10-10 15:28:37,793 INFO L226 Difference]: Without dead ends: 527 [2018-10-10 15:28:37,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4367 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=2344, Invalid=14686, Unknown=0, NotChecked=0, Total=17030 [2018-10-10 15:28:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-10-10 15:28:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 391. [2018-10-10 15:28:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-10 15:28:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 395 transitions. [2018-10-10 15:28:37,804 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 395 transitions. Word has length 229 [2018-10-10 15:28:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:37,804 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 395 transitions. [2018-10-10 15:28:37,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-10 15:28:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 395 transitions. [2018-10-10 15:28:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-10 15:28:37,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:37,806 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:37,807 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:37,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1953455305, now seen corresponding path program 4 times [2018-10-10 15:28:37,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:38,711 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:28:38,900 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:28:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:45,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:45,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-10-10 15:28:45,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-10 15:28:45,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-10 15:28:45,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=5995, Unknown=0, NotChecked=0, Total=6320 [2018-10-10 15:28:45,223 INFO L87 Difference]: Start difference. First operand 391 states and 395 transitions. Second operand 80 states. [2018-10-10 15:28:48,078 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2018-10-10 15:28:48,462 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2018-10-10 15:28:49,045 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2018-10-10 15:28:49,443 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 83 [2018-10-10 15:28:49,995 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 85 [2018-10-10 15:28:50,419 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 89 [2018-10-10 15:28:50,783 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-10 15:28:51,097 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-10-10 15:28:51,505 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2018-10-10 15:28:51,793 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2018-10-10 15:28:52,063 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2018-10-10 15:28:52,330 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2018-10-10 15:28:52,545 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2018-10-10 15:28:53,112 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2018-10-10 15:28:53,294 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2018-10-10 15:28:53,516 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-10-10 15:28:53,726 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-10-10 15:28:54,055 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-10-10 15:28:54,364 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-10 15:28:54,742 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 86 [2018-10-10 15:28:55,094 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2018-10-10 15:28:55,432 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:28:55,742 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2018-10-10 15:28:56,084 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2018-10-10 15:28:56,553 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2018-10-10 15:28:56,912 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 95 [2018-10-10 15:28:57,211 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2018-10-10 15:28:57,439 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2018-10-10 15:28:57,654 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-10 15:28:57,892 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-10 15:28:58,302 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2018-10-10 15:28:58,622 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 81 [2018-10-10 15:28:58,882 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2018-10-10 15:28:59,580 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2018-10-10 15:28:59,932 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2018-10-10 15:29:00,284 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2018-10-10 15:29:00,896 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2018-10-10 15:29:01,078 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2018-10-10 15:29:01,496 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2018-10-10 15:29:01,940 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2018-10-10 15:29:02,889 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-10 15:29:03,189 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2018-10-10 15:29:03,432 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:29:03,730 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-10 15:29:04,028 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-10 15:29:04,468 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:29:05,695 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2018-10-10 15:29:06,693 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2018-10-10 15:29:07,081 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2018-10-10 15:29:08,536 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2018-10-10 15:29:09,295 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-10 15:29:10,176 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:29:10,355 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:29:10,737 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-10 15:29:11,205 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-10 15:29:11,508 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-10 15:29:12,184 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:29:12,627 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2018-10-10 15:29:12,962 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-10 15:29:13,290 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2018-10-10 15:29:13,624 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2018-10-10 15:29:13,816 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-10 15:29:14,009 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 15:29:14,416 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:29:14,913 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2018-10-10 15:29:15,141 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-10 15:29:15,408 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:29:16,021 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:29:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:17,148 INFO L93 Difference]: Finished difference Result 668 states and 675 transitions. [2018-10-10 15:29:17,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-10 15:29:17,148 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 240 [2018-10-10 15:29:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:17,152 INFO L225 Difference]: With dead ends: 668 [2018-10-10 15:29:17,152 INFO L226 Difference]: Without dead ends: 668 [2018-10-10 15:29:17,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11980 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=4902, Invalid=38570, Unknown=0, NotChecked=0, Total=43472 [2018-10-10 15:29:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2018-10-10 15:29:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 479. [2018-10-10 15:29:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-10-10 15:29:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 484 transitions. [2018-10-10 15:29:17,165 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 484 transitions. Word has length 240 [2018-10-10 15:29:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:17,166 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 484 transitions. [2018-10-10 15:29:17,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-10 15:29:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 484 transitions. [2018-10-10 15:29:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-10 15:29:17,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:17,168 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:29:17,168 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:17,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:17,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1716679729, now seen corresponding path program 4 times [2018-10-10 15:29:17,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:29:21,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:21,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-10 15:29:21,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-10 15:29:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-10 15:29:21,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3618, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:29:21,467 INFO L87 Difference]: Start difference. First operand 479 states and 484 transitions. Second operand 62 states. [2018-10-10 15:29:23,474 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 30 [2018-10-10 15:29:23,685 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 35 [2018-10-10 15:29:23,985 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 47 [2018-10-10 15:29:24,394 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 56 [2018-10-10 15:29:24,754 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 60 [2018-10-10 15:29:25,229 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 66 [2018-10-10 15:29:25,590 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 70 [2018-10-10 15:29:25,875 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 51 [2018-10-10 15:29:26,103 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 47 [2018-10-10 15:29:26,418 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 51 [2018-10-10 15:29:26,691 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 53 [2018-10-10 15:29:28,073 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-10 15:29:28,330 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-10 15:29:28,605 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2018-10-10 15:29:29,077 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-10-10 15:29:29,285 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2018-10-10 15:29:29,571 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2018-10-10 15:29:29,901 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 85 [2018-10-10 15:29:30,098 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-10-10 15:29:31,738 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 40 [2018-10-10 15:29:32,026 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 43 [2018-10-10 15:29:32,276 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 46 [2018-10-10 15:29:32,582 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 61 [2018-10-10 15:29:32,904 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2018-10-10 15:29:33,249 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 70 [2018-10-10 15:29:33,601 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 64 [2018-10-10 15:29:33,946 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 69 [2018-10-10 15:29:34,277 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2018-10-10 15:29:34,707 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 78 [2018-10-10 15:29:35,079 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 76 [2018-10-10 15:29:35,695 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 80 [2018-10-10 15:29:36,705 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 83 [2018-10-10 15:29:37,240 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 93 [2018-10-10 15:29:37,645 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 90 [2018-10-10 15:29:37,996 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 102 [2018-10-10 15:29:38,380 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 114 [2018-10-10 15:29:38,765 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 109 [2018-10-10 15:29:39,076 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 97 [2018-10-10 15:29:39,424 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 96 [2018-10-10 15:29:39,779 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 99 [2018-10-10 15:29:42,296 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 84 [2018-10-10 15:29:42,616 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 81 [2018-10-10 15:29:43,097 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 79 [2018-10-10 15:29:43,459 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 72 [2018-10-10 15:29:43,737 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 75 [2018-10-10 15:29:44,028 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 78 [2018-10-10 15:29:44,321 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 72 [2018-10-10 15:29:44,566 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 69 [2018-10-10 15:29:45,991 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 57 [2018-10-10 15:29:46,240 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 54 [2018-10-10 15:29:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:46,277 INFO L93 Difference]: Finished difference Result 610 states and 615 transitions. [2018-10-10 15:29:46,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-10 15:29:46,277 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 261 [2018-10-10 15:29:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:46,279 INFO L225 Difference]: With dead ends: 610 [2018-10-10 15:29:46,280 INFO L226 Difference]: Without dead ends: 610 [2018-10-10 15:29:46,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6586 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=2396, Invalid=21784, Unknown=0, NotChecked=0, Total=24180 [2018-10-10 15:29:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2018-10-10 15:29:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 479. [2018-10-10 15:29:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-10-10 15:29:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 484 transitions. [2018-10-10 15:29:46,290 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 484 transitions. Word has length 261 [2018-10-10 15:29:46,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:46,291 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 484 transitions. [2018-10-10 15:29:46,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-10 15:29:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 484 transitions. [2018-10-10 15:29:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-10 15:29:46,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:46,293 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:29:46,293 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:46,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash 2046785258, now seen corresponding path program 5 times [2018-10-10 15:29:46,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:49,143 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-10-10 15:29:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:29:59,972 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:59,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-10-10 15:29:59,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-10 15:29:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-10 15:29:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=9807, Unknown=0, NotChecked=0, Total=10100 [2018-10-10 15:29:59,974 INFO L87 Difference]: Start difference. First operand 479 states and 484 transitions. Second operand 101 states. [2018-10-10 15:30:02,430 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2018-10-10 15:30:03,996 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 38 [2018-10-10 15:30:04,328 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 45 [2018-10-10 15:30:04,722 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 52 [2018-10-10 15:30:05,314 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 67 [2018-10-10 15:30:06,211 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 76 [2018-10-10 15:30:06,895 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 104 [2018-10-10 15:30:08,001 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 108 [2018-10-10 15:30:09,013 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 112 [2018-10-10 15:30:09,702 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 75 [2018-10-10 15:30:10,271 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 71 [2018-10-10 15:30:11,147 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 75 [2018-10-10 15:30:11,804 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 77 [2018-10-10 15:30:12,496 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2018-10-10 15:30:13,062 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2018-10-10 15:30:13,543 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 77 [2018-10-10 15:30:14,378 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-10 15:30:14,696 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2018-10-10 15:30:15,078 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-10-10 15:30:15,519 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2018-10-10 15:30:16,096 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-10 15:30:16,655 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2018-10-10 15:30:17,231 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2018-10-10 15:30:17,520 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-10 15:30:17,913 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2018-10-10 15:30:18,410 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2018-10-10 15:30:19,083 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 131 [2018-10-10 15:30:19,717 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 147 [2018-10-10 15:30:20,115 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 103 [2018-10-10 15:30:20,413 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2018-10-10 15:30:20,826 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2018-10-10 15:30:21,405 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2018-10-10 15:30:21,842 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2018-10-10 15:30:22,526 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 61 [2018-10-10 15:30:23,051 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 84 [2018-10-10 15:30:23,494 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 77 [2018-10-10 15:30:23,905 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 57 [2018-10-10 15:30:24,391 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 15:30:24,925 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 74 [2018-10-10 15:30:25,390 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 76 [2018-10-10 15:30:26,186 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 92 [2018-10-10 15:30:27,098 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 100 [2018-10-10 15:30:28,102 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 107 [2018-10-10 15:30:29,346 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 130 [2018-10-10 15:30:30,848 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 304 DAG size of output: 152 [2018-10-10 15:30:32,358 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 308 DAG size of output: 147 [2018-10-10 15:30:33,240 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 90 [2018-10-10 15:30:34,196 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 126 [2018-10-10 15:30:35,445 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 163 [2018-10-10 15:30:36,886 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 162 [2018-10-10 15:30:38,197 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 160 [2018-10-10 15:30:39,549 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 170 [2018-10-10 15:30:41,001 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 356 DAG size of output: 180 [2018-10-10 15:30:41,919 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 104 [2018-10-10 15:30:42,584 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 94 [2018-10-10 15:30:43,502 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 101 [2018-10-10 15:30:44,239 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 98 [2018-10-10 15:30:45,002 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 103 [2018-10-10 15:30:45,753 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 100 [2018-10-10 15:30:47,039 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 116 [2018-10-10 15:30:48,057 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 140 [2018-10-10 15:30:48,511 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 94 [2018-10-10 15:30:49,142 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 134 [2018-10-10 15:30:49,737 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 115 [2018-10-10 15:30:50,538 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 137 [2018-10-10 15:30:51,026 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 108 [2018-10-10 15:30:51,970 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-10 15:30:52,567 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-10 15:30:53,457 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 139 [2018-10-10 15:30:53,797 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-10 15:30:54,695 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 136 [2018-10-10 15:30:55,088 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2018-10-10 15:30:56,084 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:30:57,061 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2018-10-10 15:30:57,472 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2018-10-10 15:30:58,263 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 144 [2018-10-10 15:30:58,995 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 94 [2018-10-10 15:30:59,529 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2018-10-10 15:31:00,339 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 159 [2018-10-10 15:31:00,704 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-10 15:31:01,571 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 173 [2018-10-10 15:31:01,857 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-10-10 15:31:02,821 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 189 [2018-10-10 15:31:03,888 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 174 [2018-10-10 15:31:04,774 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 158 [2018-10-10 15:31:05,795 WARN L178 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 165 [2018-10-10 15:31:06,847 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 164 [2018-10-10 15:31:07,312 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-10 15:31:08,414 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 174 [2018-10-10 15:31:10,105 WARN L178 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 186 [2018-10-10 15:31:11,394 WARN L178 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 189 [2018-10-10 15:31:11,737 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2018-10-10 15:31:12,904 WARN L178 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 174 [2018-10-10 15:31:13,543 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 130 [2018-10-10 15:31:14,178 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2018-10-10 15:31:14,916 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2018-10-10 15:31:15,467 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 145 [2018-10-10 15:31:16,006 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 133 [2018-10-10 15:31:16,479 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2018-10-10 15:31:17,635 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 135 [2018-10-10 15:31:18,134 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 123 [2018-10-10 15:31:18,801 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 131 [2018-10-10 15:31:19,345 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 117 [2018-10-10 15:31:19,854 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-10 15:31:20,273 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2018-10-10 15:31:20,697 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2018-10-10 15:31:21,900 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 160 [2018-10-10 15:31:22,835 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 149 [2018-10-10 15:31:23,660 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 143 [2018-10-10 15:31:24,508 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 163 [2018-10-10 15:31:25,308 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 179 [2018-10-10 15:31:26,229 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 168 [2018-10-10 15:31:27,067 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 152 [2018-10-10 15:31:28,099 WARN L178 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 159 [2018-10-10 15:31:28,665 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2018-10-10 15:31:29,882 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 158 [2018-10-10 15:31:30,949 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 168 [2018-10-10 15:31:32,394 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 180 [2018-10-10 15:31:33,585 WARN L178 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 183 [2018-10-10 15:31:34,657 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 168 [2018-10-10 15:31:35,142 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2018-10-10 15:31:35,419 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:31:35,908 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 139 [2018-10-10 15:31:36,497 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 97 [2018-10-10 15:31:36,768 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:31:37,627 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2018-10-10 15:31:38,862 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2018-10-10 15:31:39,244 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 117 [2018-10-10 15:31:39,926 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2018-10-10 15:31:40,293 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2018-10-10 15:31:40,631 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2018-10-10 15:31:40,933 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2018-10-10 15:31:41,261 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-10 15:31:42,109 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 95 [2018-10-10 15:31:42,946 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 129 [2018-10-10 15:31:43,796 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 130 [2018-10-10 15:31:44,735 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 139 [2018-10-10 15:31:45,031 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-10 15:31:45,345 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:31:45,867 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 97 [2018-10-10 15:31:46,591 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 97 [2018-10-10 15:31:47,080 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2018-10-10 15:31:47,810 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2018-10-10 15:31:48,976 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2018-10-10 15:31:49,628 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2018-10-10 15:31:50,286 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2018-10-10 15:31:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:50,292 INFO L93 Difference]: Finished difference Result 833 states and 841 transitions. [2018-10-10 15:31:50,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-10 15:31:50,293 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 272 [2018-10-10 15:31:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:50,295 INFO L225 Difference]: With dead ends: 833 [2018-10-10 15:31:50,296 INFO L226 Difference]: Without dead ends: 833 [2018-10-10 15:31:50,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20046 ImplicationChecksByTransitivity, 106.7s TimeCoverageRelationStatistics Valid=6119, Invalid=69231, Unknown=0, NotChecked=0, Total=75350 [2018-10-10 15:31:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2018-10-10 15:31:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 543. [2018-10-10 15:31:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-10-10 15:31:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 548 transitions. [2018-10-10 15:31:50,309 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 548 transitions. Word has length 272 [2018-10-10 15:31:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:50,309 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 548 transitions. [2018-10-10 15:31:50,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-10 15:31:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 548 transitions. [2018-10-10 15:31:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-10 15:31:50,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:31:50,312 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:31:50,312 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:31:50,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:31:50,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1321004203, now seen corresponding path program 5 times [2018-10-10 15:31:50,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:31:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:31:51,631 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-10 15:31:52,876 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2018-10-10 15:31:53,093 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2018-10-10 15:31:53,369 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2018-10-10 15:31:53,569 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2018-10-10 15:31:53,820 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2018-10-10 15:31:54,095 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2018-10-10 15:31:54,343 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2018-10-10 15:31:54,581 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2018-10-10 15:31:54,823 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2018-10-10 15:31:55,061 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2018-10-10 15:31:55,309 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2018-10-10 15:31:55,578 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-10 15:31:55,845 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-10 15:31:56,118 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-10 15:31:56,359 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-10-10 15:32:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:08,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:08,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-10-10 15:32:08,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-10 15:32:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-10 15:32:08,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=10784, Unknown=0, NotChecked=0, Total=11130 [2018-10-10 15:32:08,050 INFO L87 Difference]: Start difference. First operand 543 states and 548 transitions. Second operand 106 states. [2018-10-10 15:32:11,038 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 38 [2018-10-10 15:32:11,679 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 44 [2018-10-10 15:32:12,180 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 37 [2018-10-10 15:32:12,708 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2018-10-10 15:32:13,295 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 35 [2018-10-10 15:32:13,978 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 40 [2018-10-10 15:32:14,537 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 42 [2018-10-10 15:32:15,222 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 47 [2018-10-10 15:32:15,901 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 58 [2018-10-10 15:32:16,722 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 64 [2018-10-10 15:32:17,758 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 79 [2018-10-10 15:32:19,179 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 91 [2018-10-10 15:32:20,293 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 111 [2018-10-10 15:32:21,737 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 119 [2018-10-10 15:32:23,009 WARN L178 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 127 [2018-10-10 15:32:25,064 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 240 DAG size of output: 183 [2018-10-10 15:32:26,787 WARN L178 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 222 DAG size of output: 169 [2018-10-10 15:32:28,610 WARN L178 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 232 DAG size of output: 176 [2018-10-10 15:32:30,576 WARN L178 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 239 DAG size of output: 182 [2018-10-10 15:32:32,657 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 257 DAG size of output: 194 [2018-10-10 15:32:34,907 WARN L178 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 259 DAG size of output: 196 [2018-10-10 15:32:37,108 WARN L178 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 268 DAG size of output: 203 [2018-10-10 15:32:38,350 WARN L178 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 163 [2018-10-10 15:32:39,561 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 166 [2018-10-10 15:32:40,185 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 102 [2018-10-10 15:32:40,842 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 115 [2018-10-10 15:32:41,410 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 108 [2018-10-10 15:32:41,943 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-10 15:32:42,379 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-10 15:32:42,737 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-10 15:32:43,461 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-10 15:32:44,190 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2018-10-10 15:32:45,102 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2018-10-10 15:32:46,048 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2018-10-10 15:32:47,137 WARN L178 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 113 [2018-10-10 15:32:47,945 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2018-10-10 15:32:48,506 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 103 [2018-10-10 15:32:49,186 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 124 [2018-10-10 15:32:50,007 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 125 [2018-10-10 15:32:50,810 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 132 [2018-10-10 15:32:51,593 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 139 [2018-10-10 15:32:51,996 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2018-10-10 15:32:52,336 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:32:52,784 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-10 15:32:53,242 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2018-10-10 15:32:53,721 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2018-10-10 15:32:54,660 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-10 15:32:55,713 WARN L178 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 167 [2018-10-10 15:32:56,859 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 176 [2018-10-10 15:32:57,753 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 155 [2018-10-10 15:32:58,318 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2018-10-10 15:32:58,669 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-10 15:32:58,964 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-10-10 15:32:59,425 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2018-10-10 15:32:59,956 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-10 15:33:00,434 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-10 15:33:01,034 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-10 15:33:01,614 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2018-10-10 15:33:02,195 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2018-10-10 15:33:02,709 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-10 15:33:03,134 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2018-10-10 15:33:03,581 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2018-10-10 15:33:04,360 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 88 [2018-10-10 15:33:04,893 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2018-10-10 15:33:05,356 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-10 15:33:05,680 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-10-10 15:33:06,744 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 163 [2018-10-10 15:33:07,236 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-10 15:33:08,373 WARN L178 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 162 [2018-10-10 15:33:08,911 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2018-10-10 15:33:10,153 WARN L178 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 168 [2018-10-10 15:33:11,766 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 122 [2018-10-10 15:33:12,098 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-10 15:33:12,949 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 128 [2018-10-10 15:33:13,382 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:33:13,731 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-10-10 15:33:14,216 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:33:14,694 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2018-10-10 15:33:14,905 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-10 15:33:15,871 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-10 15:33:16,245 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:33:16,737 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2018-10-10 15:33:17,208 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:33:17,666 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-10 15:33:18,191 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-10 15:33:19,553 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 266 DAG size of output: 210 [2018-10-10 15:33:20,079 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-10-10 15:33:21,535 WARN L178 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 208 [2018-10-10 15:33:22,351 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 104 [2018-10-10 15:33:23,225 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2018-10-10 15:33:24,836 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 262 DAG size of output: 206 [2018-10-10 15:33:25,146 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-10 15:33:25,867 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2018-10-10 15:33:27,283 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 270 DAG size of output: 214 [2018-10-10 15:33:27,875 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2018-10-10 15:33:29,175 WARN L178 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 194 [2018-10-10 15:33:30,580 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 251 DAG size of output: 196 [2018-10-10 15:33:32,013 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 196 [2018-10-10 15:33:32,734 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2018-10-10 15:33:33,511 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 109 [2018-10-10 15:33:34,699 WARN L178 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 189 [2018-10-10 15:33:34,966 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2018-10-10 15:33:36,407 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 257 DAG size of output: 198 [2018-10-10 15:33:36,621 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:33:37,992 WARN L178 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 201 [2018-10-10 15:33:38,498 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2018-10-10 15:33:38,908 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2018-10-10 15:33:39,287 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2018-10-10 15:33:39,702 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-10 15:33:40,674 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-10 15:33:41,809 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 175 [2018-10-10 15:33:42,928 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 178 [2018-10-10 15:33:44,080 WARN L178 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 184 [2018-10-10 15:33:45,246 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 155 [2018-10-10 15:33:45,791 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-10-10 15:33:46,214 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-10 15:33:46,568 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-10 15:33:46,950 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-10 15:33:47,272 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-10 15:33:47,667 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:33:48,305 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-10 15:33:48,895 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2018-10-10 15:33:49,922 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2018-10-10 15:33:50,443 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-10 15:33:51,060 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2018-10-10 15:33:51,436 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2018-10-10 15:33:52,844 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 174 [2018-10-10 15:33:53,865 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 164 [2018-10-10 15:33:55,115 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 171 [2018-10-10 15:33:56,268 WARN L178 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 170 [2018-10-10 15:33:57,580 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 174 [2018-10-10 15:33:58,539 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 126 [2018-10-10 15:33:59,526 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 131 [2018-10-10 15:33:59,865 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-10-10 15:34:00,245 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-10-10 15:34:01,351 WARN L178 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 174 [2018-10-10 15:34:01,740 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-10 15:34:02,965 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 167 [2018-10-10 15:34:03,367 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2018-10-10 15:34:03,793 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2018-10-10 15:34:04,200 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-10-10 15:34:05,534 WARN L178 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 208 [2018-10-10 15:34:06,936 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 261 DAG size of output: 206 [2018-10-10 15:34:08,299 WARN L178 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 204 [2018-10-10 15:34:09,680 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 267 DAG size of output: 212 [2018-10-10 15:34:10,923 WARN L178 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 192 [2018-10-10 15:34:12,262 WARN L178 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 194 [2018-10-10 15:34:13,555 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 194 [2018-10-10 15:34:14,775 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 187 [2018-10-10 15:34:16,086 WARN L178 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 196 [2018-10-10 15:34:17,477 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 257 DAG size of output: 199 [2018-10-10 15:34:18,558 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 160 [2018-10-10 15:34:19,566 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 130 [2018-10-10 15:34:20,569 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 163 [2018-10-10 15:34:21,714 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 164 [2018-10-10 15:34:22,673 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 156 [2018-10-10 15:34:23,029 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-10 15:34:23,377 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:34:24,173 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 113 [2018-10-10 15:34:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:24,212 INFO L93 Difference]: Finished difference Result 747 states and 752 transitions. [2018-10-10 15:34:24,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-10 15:34:24,213 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 283 [2018-10-10 15:34:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:24,216 INFO L225 Difference]: With dead ends: 747 [2018-10-10 15:34:24,216 INFO L226 Difference]: Without dead ends: 747 [2018-10-10 15:34:24,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20339 ImplicationChecksByTransitivity, 136.5s TimeCoverageRelationStatistics Valid=7073, Invalid=77899, Unknown=0, NotChecked=0, Total=84972 [2018-10-10 15:34:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2018-10-10 15:34:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 597. [2018-10-10 15:34:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2018-10-10 15:34:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 603 transitions. [2018-10-10 15:34:24,229 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 603 transitions. Word has length 283 [2018-10-10 15:34:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:24,230 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 603 transitions. [2018-10-10 15:34:24,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-10 15:34:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 603 transitions. [2018-10-10 15:34:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-10 15:34:24,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:24,232 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:34:24,233 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:24,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1043259364, now seen corresponding path program 6 times [2018-10-10 15:34:24,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 39 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:30,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:30,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-10 15:34:30,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-10 15:34:30,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-10 15:34:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=5363, Unknown=0, NotChecked=0, Total=5550 [2018-10-10 15:34:30,205 INFO L87 Difference]: Start difference. First operand 597 states and 603 transitions. Second operand 75 states. [2018-10-10 15:34:32,930 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 35 [2018-10-10 15:34:33,288 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 47 [2018-10-10 15:34:33,808 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 56 [2018-10-10 15:34:34,173 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 60 [2018-10-10 15:34:34,732 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 66 [2018-10-10 15:34:35,172 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2018-10-10 15:34:35,500 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 42 [2018-10-10 15:34:35,749 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 38 [2018-10-10 15:34:36,103 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 42 [2018-10-10 15:34:36,392 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 44 [2018-10-10 15:34:37,084 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-10 15:34:37,260 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 15:34:37,900 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2018-10-10 15:34:38,120 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2018-10-10 15:34:38,382 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:34:38,683 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2018-10-10 15:34:39,103 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-10 15:34:39,355 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-10 15:34:39,696 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2018-10-10 15:34:40,012 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2018-10-10 15:34:40,203 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-10 15:34:42,094 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 39 [2018-10-10 15:34:42,413 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 41 [2018-10-10 15:34:42,755 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 56 [2018-10-10 15:34:43,137 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 64 [2018-10-10 15:34:43,600 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 45 [2018-10-10 15:34:43,986 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 63 [2018-10-10 15:34:44,367 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 67 [2018-10-10 15:34:44,947 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 73 [2018-10-10 15:34:45,376 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 77 [2018-10-10 15:34:45,681 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 48 [2018-10-10 15:34:45,920 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 44 [2018-10-10 15:34:46,342 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 51 [2018-10-10 15:34:46,977 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 55 [2018-10-10 15:34:47,457 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 72 [2018-10-10 15:34:47,729 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2018-10-10 15:34:49,078 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 88 [2018-10-10 15:34:49,570 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 84 [2018-10-10 15:34:49,990 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 100 [2018-10-10 15:34:50,483 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 116 [2018-10-10 15:34:50,969 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 111 [2018-10-10 15:34:51,354 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 95 [2018-10-10 15:34:51,795 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 99 [2018-10-10 15:34:52,558 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 103 [2018-10-10 15:34:53,014 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 105 [2018-10-10 15:34:53,531 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 111 [2018-10-10 15:34:53,998 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 109 [2018-10-10 15:34:54,536 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 107 [2018-10-10 15:34:55,424 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2018-10-10 15:34:55,799 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2018-10-10 15:34:56,157 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2018-10-10 15:34:56,593 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2018-10-10 15:34:56,876 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-10 15:34:57,209 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 112 [2018-10-10 15:34:58,300 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2018-10-10 15:34:58,942 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 81 [2018-10-10 15:34:59,403 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 69 [2018-10-10 15:34:59,747 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 76 [2018-10-10 15:35:00,117 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 83 [2018-10-10 15:35:00,459 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 76 [2018-10-10 15:35:00,752 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 69 [2018-10-10 15:35:01,096 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 76 [2018-10-10 15:35:01,581 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 79 [2018-10-10 15:35:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:02,363 INFO L93 Difference]: Finished difference Result 663 states and 667 transitions. [2018-10-10 15:35:02,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-10 15:35:02,363 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 293 [2018-10-10 15:35:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:02,367 INFO L225 Difference]: With dead ends: 663 [2018-10-10 15:35:02,367 INFO L226 Difference]: Without dead ends: 535 [2018-10-10 15:35:02,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6965 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=2975, Invalid=26095, Unknown=0, NotChecked=0, Total=29070 [2018-10-10 15:35:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-10-10 15:35:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 522. [2018-10-10 15:35:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-10 15:35:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 527 transitions. [2018-10-10 15:35:02,376 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 527 transitions. Word has length 293 [2018-10-10 15:35:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:02,377 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 527 transitions. [2018-10-10 15:35:02,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-10 15:35:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 527 transitions. [2018-10-10 15:35:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-10 15:35:02,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:02,379 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:35:02,380 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:02,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:02,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2028427357, now seen corresponding path program 7 times [2018-10-10 15:35:02,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:03,522 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-10 15:35:10,177 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-10 15:35:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:18,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:18,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-10-10 15:35:18,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-10 15:35:18,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-10 15:35:18,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=9841, Unknown=0, NotChecked=0, Total=10100 [2018-10-10 15:35:18,581 INFO L87 Difference]: Start difference. First operand 522 states and 527 transitions. Second operand 101 states. [2018-10-10 15:35:22,328 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:35:23,107 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2018-10-10 15:35:23,573 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2018-10-10 15:35:24,336 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 89 [2018-10-10 15:35:24,841 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 95 [2018-10-10 15:35:25,135 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:35:25,715 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2018-10-10 15:35:26,011 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2018-10-10 15:35:26,596 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:35:26,952 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2018-10-10 15:35:27,228 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2018-10-10 15:35:28,714 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:35:29,043 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-10 15:35:29,462 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:35:29,908 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2018-10-10 15:35:30,516 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-10 15:35:30,907 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-10 15:35:31,348 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2018-10-10 15:35:32,143 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 100 [2018-10-10 15:35:32,647 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 104 [2018-10-10 15:35:32,984 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-10-10 15:35:33,221 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2018-10-10 15:35:33,763 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2018-10-10 15:35:34,103 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-10 15:35:34,860 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:35:35,090 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-10-10 15:35:36,373 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-10-10 15:35:36,739 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:35:37,182 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2018-10-10 15:35:37,734 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2018-10-10 15:35:38,374 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 120 [2018-10-10 15:35:39,073 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 122 [2018-10-10 15:35:39,693 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-10 15:35:40,237 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2018-10-10 15:35:40,929 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 132 [2018-10-10 15:35:41,734 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 128 [2018-10-10 15:35:42,784 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 142 [2018-10-10 15:35:43,827 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 155 [2018-10-10 15:35:44,411 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2018-10-10 15:35:44,808 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-10 15:35:45,409 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2018-10-10 15:35:45,947 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2018-10-10 15:35:46,542 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2018-10-10 15:35:47,501 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 105 [2018-10-10 15:35:48,060 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2018-10-10 15:35:48,574 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2018-10-10 15:35:48,904 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-10 15:35:49,112 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-10 15:35:49,529 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-10 15:35:50,050 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2018-10-10 15:35:50,518 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2018-10-10 15:35:50,989 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 96 [2018-10-10 15:35:51,848 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2018-10-10 15:35:52,260 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2018-10-10 15:35:52,743 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88