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_42.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:34:08,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:34:08,831 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:34:08,844 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:34:08,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:34:08,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:34:08,846 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:34:08,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:34:08,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:34:08,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:34:08,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:34:08,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:34:08,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:34:08,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:34:08,855 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:34:08,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:34:08,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:34:08,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:34:08,860 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:34:08,862 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:34:08,863 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:34:08,865 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:34:08,867 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:34:08,876 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:34:08,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:34:08,887 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:34:08,887 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:34:08,888 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:34:08,888 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:34:08,888 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:34:08,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:34:08,889 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:34:08,889 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:34:08,889 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:34:08,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:34:08,890 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:34:08,890 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:34:08,891 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:34:08,891 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:34:08,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:34:08,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:34:08,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:34:08,978 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:34:08,979 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:34:08,980 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl [2018-10-14 16:34:08,980 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl' [2018-10-14 16:34:09,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:34:09,092 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:34:09,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:34:09,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:34:09,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:34:09,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:34:09,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:34:09,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:34:09,196 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:34:09,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:34:09,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:34:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:34:09,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:34:10,185 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:34:10,186 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:10 BoogieIcfgContainer [2018-10-14 16:34:10,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:34:10,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:34:10,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:34:10,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:34:10,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/2) ... [2018-10-14 16:34:10,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388b60e3 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:34:10, skipping insertion in model container [2018-10-14 16:34:10,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:10" (2/2) ... [2018-10-14 16:34:10,193 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_42.bpl [2018-10-14 16:34:10,203 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:34:10,211 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:34:10,228 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:34:10,257 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:34:10,257 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:34:10,258 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:34:10,258 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:34:10,258 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:34:10,258 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:34:10,258 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:34:10,259 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:34:10,259 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:34:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2018-10-14 16:34:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-14 16:34:10,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:10,293 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:10,294 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:10,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:10,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1831432505, now seen corresponding path program 1 times [2018-10-14 16:34:10,353 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:10,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:10,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:34:10,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:34:10,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:34:10,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:10,578 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 3 states. [2018-10-14 16:34:10,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:10,682 INFO L93 Difference]: Finished difference Result 206 states and 210 transitions. [2018-10-14 16:34:10,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:34:10,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-14 16:34:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:10,700 INFO L225 Difference]: With dead ends: 206 [2018-10-14 16:34:10,701 INFO L226 Difference]: Without dead ends: 206 [2018-10-14 16:34:10,703 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 [2018-10-14 16:34:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-14 16:34:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2018-10-14 16:34:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-14 16:34:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 188 transitions. [2018-10-14 16:34:10,760 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 188 transitions. Word has length 59 [2018-10-14 16:34:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:10,761 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 188 transitions. [2018-10-14 16:34:10,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:34:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 188 transitions. [2018-10-14 16:34:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-14 16:34:10,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:10,763 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:10,764 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:10,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:10,764 INFO L82 PathProgramCache]: Analyzing trace with hash 159513863, now seen corresponding path program 1 times [2018-10-14 16:34:10,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:11,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:11,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:34:11,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:34:11,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:34:11,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:34:11,165 INFO L87 Difference]: Start difference. First operand 183 states and 188 transitions. Second operand 9 states. [2018-10-14 16:34:11,952 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-14 16:34:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:12,770 INFO L93 Difference]: Finished difference Result 290 states and 295 transitions. [2018-10-14 16:34:12,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:34:12,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2018-10-14 16:34:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:12,777 INFO L225 Difference]: With dead ends: 290 [2018-10-14 16:34:12,781 INFO L226 Difference]: Without dead ends: 258 [2018-10-14 16:34:12,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:34:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-14 16:34:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2018-10-14 16:34:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-14 16:34:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2018-10-14 16:34:12,812 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 59 [2018-10-14 16:34:12,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:12,813 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2018-10-14 16:34:12,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:34:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2018-10-14 16:34:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-14 16:34:12,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:12,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:12,817 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:12,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:12,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1052591827, now seen corresponding path program 1 times [2018-10-14 16:34:12,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:13,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:13,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:34:13,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:34:13,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:34:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:34:13,306 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand 11 states. [2018-10-14 16:34:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:14,311 INFO L93 Difference]: Finished difference Result 437 states and 446 transitions. [2018-10-14 16:34:14,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:34:14,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2018-10-14 16:34:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:14,319 INFO L225 Difference]: With dead ends: 437 [2018-10-14 16:34:14,319 INFO L226 Difference]: Without dead ends: 437 [2018-10-14 16:34:14,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:34:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-10-14 16:34:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 264. [2018-10-14 16:34:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-14 16:34:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 270 transitions. [2018-10-14 16:34:14,359 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 270 transitions. Word has length 102 [2018-10-14 16:34:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:14,360 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 270 transitions. [2018-10-14 16:34:14,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:34:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 270 transitions. [2018-10-14 16:34:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-14 16:34:14,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:14,371 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:14,372 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:14,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:14,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2022960541, now seen corresponding path program 1 times [2018-10-14 16:34:14,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:15,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:15,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-14 16:34:15,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-14 16:34:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-14 16:34:15,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:34:15,467 INFO L87 Difference]: Start difference. First operand 264 states and 270 transitions. Second operand 25 states. [2018-10-14 16:34:16,165 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-10-14 16:34:16,531 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-10-14 16:34:17,136 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-14 16:34:18,151 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-10-14 16:34:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:18,936 INFO L93 Difference]: Finished difference Result 371 states and 377 transitions. [2018-10-14 16:34:18,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-14 16:34:18,936 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 134 [2018-10-14 16:34:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:18,939 INFO L225 Difference]: With dead ends: 371 [2018-10-14 16:34:18,939 INFO L226 Difference]: Without dead ends: 319 [2018-10-14 16:34:18,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:34:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-14 16:34:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 228. [2018-10-14 16:34:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-14 16:34:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 233 transitions. [2018-10-14 16:34:18,950 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 233 transitions. Word has length 134 [2018-10-14 16:34:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:18,951 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 233 transitions. [2018-10-14 16:34:18,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-14 16:34:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 233 transitions. [2018-10-14 16:34:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-14 16:34:18,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:18,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:18,954 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:18,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:18,954 INFO L82 PathProgramCache]: Analyzing trace with hash -380302681, now seen corresponding path program 1 times [2018-10-14 16:34:18,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:19,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:19,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-14 16:34:19,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-14 16:34:19,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-14 16:34:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:34:19,721 INFO L87 Difference]: Start difference. First operand 228 states and 233 transitions. Second operand 20 states. [2018-10-14 16:34:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:21,785 INFO L93 Difference]: Finished difference Result 519 states and 531 transitions. [2018-10-14 16:34:21,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:34:21,786 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 145 [2018-10-14 16:34:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:21,790 INFO L225 Difference]: With dead ends: 519 [2018-10-14 16:34:21,790 INFO L226 Difference]: Without dead ends: 519 [2018-10-14 16:34:21,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=445, Invalid=1625, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:34:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-10-14 16:34:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 348. [2018-10-14 16:34:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-10-14 16:34:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 356 transitions. [2018-10-14 16:34:21,804 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 356 transitions. Word has length 145 [2018-10-14 16:34:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:21,804 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 356 transitions. [2018-10-14 16:34:21,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-14 16:34:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 356 transitions. [2018-10-14 16:34:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-14 16:34:21,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:21,808 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, 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] [2018-10-14 16:34:21,809 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:21,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:21,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1595963849, now seen corresponding path program 1 times [2018-10-14 16:34:21,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:23,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:23,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-14 16:34:23,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-14 16:34:23,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-14 16:34:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2018-10-14 16:34:23,853 INFO L87 Difference]: Start difference. First operand 348 states and 356 transitions. Second operand 37 states. [2018-10-14 16:34:25,243 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-14 16:34:25,434 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-14 16:34:25,711 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2018-10-14 16:34:25,947 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2018-10-14 16:34:28,114 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-14 16:34:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:32,441 INFO L93 Difference]: Finished difference Result 580 states and 593 transitions. [2018-10-14 16:34:32,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:34:32,445 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 177 [2018-10-14 16:34:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:32,448 INFO L225 Difference]: With dead ends: 580 [2018-10-14 16:34:32,448 INFO L226 Difference]: Without dead ends: 580 [2018-10-14 16:34:32,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=696, Invalid=6614, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:34:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2018-10-14 16:34:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 394. [2018-10-14 16:34:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-10-14 16:34:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 403 transitions. [2018-10-14 16:34:32,460 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 403 transitions. Word has length 177 [2018-10-14 16:34:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:32,460 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 403 transitions. [2018-10-14 16:34:32,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-14 16:34:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 403 transitions. [2018-10-14 16:34:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-14 16:34:32,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:32,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:32,464 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:32,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:32,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1373244109, now seen corresponding path program 2 times [2018-10-14 16:34:32,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:33,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:33,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-14 16:34:33,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:34:33,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:34:33,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:34:33,097 INFO L87 Difference]: Start difference. First operand 394 states and 403 transitions. Second operand 23 states. [2018-10-14 16:34:34,501 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-14 16:34:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:36,284 INFO L93 Difference]: Finished difference Result 521 states and 531 transitions. [2018-10-14 16:34:36,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:34:36,284 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 188 [2018-10-14 16:34:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:36,287 INFO L225 Difference]: With dead ends: 521 [2018-10-14 16:34:36,288 INFO L226 Difference]: Without dead ends: 521 [2018-10-14 16:34:36,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=785, Invalid=3247, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:34:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2018-10-14 16:34:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 405. [2018-10-14 16:34:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-10-14 16:34:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 414 transitions. [2018-10-14 16:34:36,298 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 414 transitions. Word has length 188 [2018-10-14 16:34:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:36,299 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 414 transitions. [2018-10-14 16:34:36,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:34:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 414 transitions. [2018-10-14 16:34:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-14 16:34:36,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:36,302 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-14 16:34:36,302 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:36,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:36,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1748815865, now seen corresponding path program 2 times [2018-10-14 16:34:36,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:39,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:39,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:34:39,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:34:39,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:34:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2536, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:34:39,406 INFO L87 Difference]: Start difference. First operand 405 states and 414 transitions. Second operand 52 states. [2018-10-14 16:34:40,237 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-14 16:34:40,441 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:34:40,604 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:34:40,941 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-14 16:34:41,152 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:34:41,320 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-14 16:34:41,595 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:34:41,829 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-14 16:34:42,239 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-14 16:34:43,175 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-14 16:34:43,503 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-14 16:34:43,711 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-14 16:34:44,131 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-14 16:34:44,432 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-14 16:34:45,276 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-14 16:34:45,635 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-14 16:34:45,940 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-14 16:34:46,584 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-14 16:34:47,293 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2018-10-14 16:34:47,701 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2018-10-14 16:34:49,236 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-10-14 16:34:49,517 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-14 16:34:50,860 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-14 16:34:51,080 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:34:51,425 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-14 16:34:51,696 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-14 16:34:51,963 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-14 16:34:52,297 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2018-10-14 16:34:52,567 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-14 16:34:52,816 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2018-10-14 16:34:53,051 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-14 16:34:53,894 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-14 16:34:54,222 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-14 16:34:54,521 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2018-10-14 16:34:54,900 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:34:55,161 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-14 16:34:55,449 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-14 16:34:56,380 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2018-10-14 16:34:57,319 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-14 16:34:57,925 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-10-14 16:34:58,537 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2018-10-14 16:34:59,123 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2018-10-14 16:34:59,615 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2018-10-14 16:35:00,003 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2018-10-14 16:35:00,864 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:35:01,427 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2018-10-14 16:35:01,781 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-14 16:35:03,300 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-14 16:35:03,490 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-14 16:35:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:03,501 INFO L93 Difference]: Finished difference Result 624 states and 634 transitions. [2018-10-14 16:35:03,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-14 16:35:03,503 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 209 [2018-10-14 16:35:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:03,505 INFO L225 Difference]: With dead ends: 624 [2018-10-14 16:35:03,506 INFO L226 Difference]: Without dead ends: 582 [2018-10-14 16:35:03,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=1678, Invalid=19492, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:35:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2018-10-14 16:35:03,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 423. [2018-10-14 16:35:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-10-14 16:35:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 431 transitions. [2018-10-14 16:35:03,522 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 431 transitions. Word has length 209 [2018-10-14 16:35:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:03,522 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 431 transitions. [2018-10-14 16:35:03,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:35:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 431 transitions. [2018-10-14 16:35:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-14 16:35:03,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:03,525 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-14 16:35:03,525 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:03,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1417293831, now seen corresponding path program 3 times [2018-10-14 16:35:03,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-14 16:35:03,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:35:03,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:35:03,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:35:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:35:03,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:35:03,629 INFO L87 Difference]: Start difference. First operand 423 states and 431 transitions. Second operand 3 states. [2018-10-14 16:35:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:03,653 INFO L93 Difference]: Finished difference Result 363 states and 365 transitions. [2018-10-14 16:35:03,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:35:03,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-10-14 16:35:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:03,655 INFO L225 Difference]: With dead ends: 363 [2018-10-14 16:35:03,655 INFO L226 Difference]: Without dead ends: 309 [2018-10-14 16:35:03,655 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 [2018-10-14 16:35:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-14 16:35:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 296. [2018-10-14 16:35:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-10-14 16:35:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 299 transitions. [2018-10-14 16:35:03,663 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 299 transitions. Word has length 209 [2018-10-14 16:35:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:03,663 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 299 transitions. [2018-10-14 16:35:03,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:35:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 299 transitions. [2018-10-14 16:35:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-14 16:35:03,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:03,666 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, 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] [2018-10-14 16:35:03,667 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:03,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:03,667 INFO L82 PathProgramCache]: Analyzing trace with hash 696467651, now seen corresponding path program 4 times [2018-10-14 16:35:03,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:35:12,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:12,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-10-14 16:35:12,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-14 16:35:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-14 16:35:12,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=5978, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:35:12,436 INFO L87 Difference]: Start difference. First operand 296 states and 299 transitions. Second operand 80 states. [2018-10-14 16:35:14,272 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 35 [2018-10-14 16:35:14,735 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 41 [2018-10-14 16:35:15,090 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 41 [2018-10-14 16:35:15,404 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 34 [2018-10-14 16:35:15,705 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 21 [2018-10-14 16:35:16,001 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 24 [2018-10-14 16:35:16,387 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 27 [2018-10-14 16:35:16,707 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 29 [2018-10-14 16:35:17,109 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 37 [2018-10-14 16:35:17,485 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 45 [2018-10-14 16:35:17,961 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 53 [2018-10-14 16:35:18,540 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2018-10-14 16:35:19,080 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 76 [2018-10-14 16:35:19,606 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 70 [2018-10-14 16:35:20,414 WARN L179 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 82 [2018-10-14 16:35:21,053 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 90 [2018-10-14 16:35:21,846 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 96 [2018-10-14 16:35:22,652 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 100 [2018-10-14 16:35:23,686 WARN L179 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 161 [2018-10-14 16:35:24,511 WARN L179 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 156 [2018-10-14 16:35:25,446 WARN L179 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 166 [2018-10-14 16:35:26,460 WARN L179 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 171 [2018-10-14 16:35:27,403 WARN L179 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 169 [2018-10-14 16:35:27,916 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2018-10-14 16:35:28,442 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 97 [2018-10-14 16:35:28,882 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 98 [2018-10-14 16:35:29,296 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2018-10-14 16:35:29,792 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-14 16:35:30,093 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:35:30,337 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:35:30,821 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-14 16:35:31,328 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2018-10-14 16:35:31,952 WARN L179 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2018-10-14 16:35:32,688 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 120 [2018-10-14 16:35:33,697 WARN L179 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 143 [2018-10-14 16:35:34,557 WARN L179 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 146 [2018-10-14 16:35:35,053 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2018-10-14 16:35:35,648 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2018-10-14 16:35:36,320 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 132 [2018-10-14 16:35:37,254 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 146 [2018-10-14 16:35:38,067 WARN L179 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 160 [2018-10-14 16:35:38,625 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2018-10-14 16:35:38,979 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-14 16:35:39,244 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2018-10-14 16:35:39,580 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-14 16:35:40,667 WARN L179 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 177 [2018-10-14 16:35:41,523 WARN L179 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 178 [2018-10-14 16:35:42,271 WARN L179 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 166 [2018-10-14 16:35:43,318 WARN L179 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 181 [2018-10-14 16:35:43,864 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:35:44,639 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-10-14 16:35:45,086 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2018-10-14 16:35:45,469 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2018-10-14 16:35:45,822 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2018-10-14 16:35:46,545 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2018-10-14 16:35:46,945 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2018-10-14 16:35:47,202 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2018-10-14 16:35:48,119 WARN L179 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 179 [2018-10-14 16:35:49,152 WARN L179 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 172 [2018-10-14 16:35:50,362 WARN L179 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 179 [2018-10-14 16:35:51,364 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 173 [2018-10-14 16:35:52,315 WARN L179 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 163 [2018-10-14 16:35:53,308 WARN L179 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 174 [2018-10-14 16:35:54,387 WARN L179 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 179 [2018-10-14 16:35:54,942 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2018-10-14 16:35:55,413 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2018-10-14 16:35:55,935 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2018-10-14 16:35:57,468 WARN L179 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 201 [2018-10-14 16:35:57,814 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2018-10-14 16:35:58,571 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2018-10-14 16:35:59,273 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:35:59,641 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2018-10-14 16:36:01,352 WARN L179 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 199 [2018-10-14 16:36:02,812 WARN L179 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 191 [2018-10-14 16:36:03,879 WARN L179 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 177 [2018-10-14 16:36:04,862 WARN L179 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 187 [2018-10-14 16:36:05,216 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-14 16:36:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:05,620 INFO L93 Difference]: Finished difference Result 527 states and 531 transitions. [2018-10-14 16:36:05,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-14 16:36:05,620 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 220 [2018-10-14 16:36:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:05,624 INFO L225 Difference]: With dead ends: 527 [2018-10-14 16:36:05,624 INFO L226 Difference]: Without dead ends: 527 [2018-10-14 16:36:05,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6538 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=3197, Invalid=24193, Unknown=0, NotChecked=0, Total=27390 [2018-10-14 16:36:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-10-14 16:36:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 407. [2018-10-14 16:36:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-10-14 16:36:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 411 transitions. [2018-10-14 16:36:05,637 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 411 transitions. Word has length 220 [2018-10-14 16:36:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:05,637 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 411 transitions. [2018-10-14 16:36:05,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-14 16:36:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 411 transitions. [2018-10-14 16:36:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-14 16:36:05,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:05,640 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:36:05,641 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:05,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:05,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1694087827, now seen corresponding path program 5 times [2018-10-14 16:36:05,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:36:11,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:11,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 16:36:11,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 16:36:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 16:36:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=4230, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:36:11,215 INFO L87 Difference]: Start difference. First operand 407 states and 411 transitions. Second operand 67 states. [2018-10-14 16:36:12,236 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 29 [2018-10-14 16:36:12,493 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 31 [2018-10-14 16:36:12,716 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 26 [2018-10-14 16:36:13,146 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 21 [2018-10-14 16:36:13,404 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 26 [2018-10-14 16:36:13,660 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 28 [2018-10-14 16:36:13,976 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 31 [2018-10-14 16:36:14,335 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 38 [2018-10-14 16:36:14,680 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 45 [2018-10-14 16:36:15,109 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 59 [2018-10-14 16:36:15,655 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 70 [2018-10-14 16:36:16,117 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 76 [2018-10-14 16:36:16,634 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 81 [2018-10-14 16:36:17,202 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 87 [2018-10-14 16:36:17,761 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 91 [2018-10-14 16:36:18,149 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 56 [2018-10-14 16:36:18,472 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 52 [2018-10-14 16:36:18,890 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 56 [2018-10-14 16:36:19,308 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 58 [2018-10-14 16:36:19,653 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-14 16:36:19,889 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2018-10-14 16:36:20,083 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-14 16:36:20,635 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2018-10-14 16:36:20,925 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2018-10-14 16:36:21,209 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-14 16:36:21,585 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-14 16:36:21,983 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-10-14 16:36:22,396 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2018-10-14 16:36:22,826 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2018-10-14 16:36:23,166 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:36:23,510 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2018-10-14 16:36:23,900 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2018-10-14 16:36:24,557 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 102 [2018-10-14 16:36:25,022 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 105 [2018-10-14 16:36:25,323 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-10-14 16:36:25,553 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2018-10-14 16:36:26,591 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2018-10-14 16:36:26,956 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-14 16:36:27,346 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-14 16:36:27,841 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 61 [2018-10-14 16:36:28,205 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 68 [2018-10-14 16:36:28,537 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 16:36:28,799 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 37 [2018-10-14 16:36:29,065 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 40 [2018-10-14 16:36:29,385 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 44 [2018-10-14 16:36:29,711 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 46 [2018-10-14 16:36:30,071 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 49 [2018-10-14 16:36:30,462 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 64 [2018-10-14 16:36:30,846 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-14 16:36:31,235 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 69 [2018-10-14 16:36:31,607 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 45 [2018-10-14 16:36:31,973 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 60 [2018-10-14 16:36:32,451 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 57 [2018-10-14 16:36:33,189 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 72 [2018-10-14 16:36:34,122 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 69 [2018-10-14 16:36:34,728 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 83 [2018-10-14 16:36:35,285 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 93 [2018-10-14 16:36:35,702 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 103 [2018-10-14 16:36:36,127 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 98 [2018-10-14 16:36:36,469 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 88 [2018-10-14 16:36:36,835 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 90 [2018-10-14 16:36:39,355 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-14 16:36:40,081 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 77 [2018-10-14 16:36:40,765 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 75 [2018-10-14 16:36:41,211 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 70 [2018-10-14 16:36:41,545 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 61 [2018-10-14 16:36:42,408 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 54 [2018-10-14 16:36:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:42,442 INFO L93 Difference]: Finished difference Result 565 states and 568 transitions. [2018-10-14 16:36:42,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-14 16:36:42,442 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-10-14 16:36:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:42,445 INFO L225 Difference]: With dead ends: 565 [2018-10-14 16:36:42,445 INFO L226 Difference]: Without dead ends: 565 [2018-10-14 16:36:42,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6415 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=2410, Invalid=21152, Unknown=0, NotChecked=0, Total=23562 [2018-10-14 16:36:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2018-10-14 16:36:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 414. [2018-10-14 16:36:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-10-14 16:36:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 418 transitions. [2018-10-14 16:36:42,453 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 418 transitions. Word has length 252 [2018-10-14 16:36:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:42,454 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 418 transitions. [2018-10-14 16:36:42,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 16:36:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 418 transitions. [2018-10-14 16:36:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-14 16:36:42,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:42,456 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, 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] [2018-10-14 16:36:42,456 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:42,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash -906028073, now seen corresponding path program 6 times [2018-10-14 16:36:42,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:49,285 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-10-14 16:36:49,864 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-14 16:36:51,539 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2018-10-14 16:36:52,360 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 16:36:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:36:58,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:58,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-10-14 16:36:58,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-14 16:36:58,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-14 16:36:58,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=9122, Unknown=0, NotChecked=0, Total=9506 [2018-10-14 16:36:58,125 INFO L87 Difference]: Start difference. First operand 414 states and 418 transitions. Second operand 98 states. [2018-10-14 16:37:00,164 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 37 [2018-10-14 16:37:00,642 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 43 [2018-10-14 16:37:01,054 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 36 [2018-10-14 16:37:01,391 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 22 [2018-10-14 16:37:01,736 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 25 [2018-10-14 16:37:02,110 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 28 [2018-10-14 16:37:02,435 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 30 [2018-10-14 16:37:02,897 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 37 [2018-10-14 16:37:03,355 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 45 [2018-10-14 16:37:03,861 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 53 [2018-10-14 16:37:04,509 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 69 [2018-10-14 16:37:05,075 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 71 [2018-10-14 16:37:06,182 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 84 [2018-10-14 16:37:06,959 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 93 [2018-10-14 16:37:07,958 WARN L179 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 99 [2018-10-14 16:37:08,812 WARN L179 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 103 [2018-10-14 16:37:09,806 WARN L179 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 138 [2018-10-14 16:37:10,652 WARN L179 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 133 [2018-10-14 16:37:11,526 WARN L179 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 143 [2018-10-14 16:37:12,564 WARN L179 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 151 [2018-10-14 16:37:13,492 WARN L179 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 150 [2018-10-14 16:37:14,667 WARN L179 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 155 [2018-10-14 16:37:15,176 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 78 [2018-10-14 16:37:15,954 WARN L179 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 93 [2018-10-14 16:37:16,614 WARN L179 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 86 [2018-10-14 16:37:16,956 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-14 16:37:17,554 WARN L179 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2018-10-14 16:37:17,975 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2018-10-14 16:37:18,337 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2018-10-14 16:37:19,199 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 92 [2018-10-14 16:37:20,107 WARN L179 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 102 [2018-10-14 16:37:21,256 WARN L179 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 114 [2018-10-14 16:37:22,675 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 231 DAG size of output: 134 [2018-10-14 16:37:24,376 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 270 DAG size of output: 153 [2018-10-14 16:37:25,222 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 99 [2018-10-14 16:37:26,324 WARN L179 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 135 [2018-10-14 16:37:27,493 WARN L179 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 161 [2018-10-14 16:37:28,770 WARN L179 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 164 [2018-10-14 16:37:30,341 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 249 DAG size of output: 177 [2018-10-14 16:37:31,965 WARN L179 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 260 DAG size of output: 190 [2018-10-14 16:37:33,144 WARN L179 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 139 [2018-10-14 16:37:34,057 WARN L179 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 126 [2018-10-14 16:37:34,567 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2018-10-14 16:37:35,152 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 89 [2018-10-14 16:37:35,684 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 92 [2018-10-14 16:37:36,994 WARN L179 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 173 [2018-10-14 16:37:38,118 WARN L179 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 177 [2018-10-14 16:37:39,028 WARN L179 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 165 [2018-10-14 16:37:39,309 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-10-14 16:37:39,581 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-10-14 16:37:39,866 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-10-14 16:37:40,147 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-14 16:37:40,844 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2018-10-14 16:37:41,733 WARN L179 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 132 [2018-10-14 16:37:42,635 WARN L179 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 145 [2018-10-14 16:37:43,675 WARN L179 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 162 [2018-10-14 16:37:44,964 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 219 DAG size of output: 182 [2018-10-14 16:37:45,472 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2018-10-14 16:37:46,213 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 121 [2018-10-14 16:37:47,197 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 148 [2018-10-14 16:37:48,176 WARN L179 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2018-10-14 16:37:49,338 WARN L179 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 163 [2018-10-14 16:37:50,589 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 188 DAG size of output: 176 [2018-10-14 16:37:51,248 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2018-10-14 16:37:51,875 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-14 16:37:52,897 WARN L179 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 177 [2018-10-14 16:37:53,628 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2018-10-14 16:37:54,716 WARN L179 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 185 [2018-10-14 16:37:55,366 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2018-10-14 16:37:56,437 WARN L179 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 184 [2018-10-14 16:37:57,554 WARN L179 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 106 [2018-10-14 16:37:58,717 WARN L179 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 188 [2018-10-14 16:37:59,371 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 105 [2018-10-14 16:37:59,801 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 90 [2018-10-14 16:38:00,223 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2018-10-14 16:38:00,770 WARN L179 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 105 [2018-10-14 16:38:01,290 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2018-10-14 16:38:01,908 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 98 [2018-10-14 16:38:02,538 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-14 16:38:02,919 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-14 16:38:03,229 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2018-10-14 16:38:03,802 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 111 [2018-10-14 16:38:04,264 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2018-10-14 16:38:04,661 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-14 16:38:05,084 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-14 16:38:06,313 WARN L179 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 210 [2018-10-14 16:38:06,881 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2018-10-14 16:38:07,593 WARN L179 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2018-10-14 16:38:09,109 WARN L179 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 204 [2018-10-14 16:38:09,350 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2018-10-14 16:38:09,760 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2018-10-14 16:38:11,026 WARN L179 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 214 [2018-10-14 16:38:11,415 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2018-10-14 16:38:13,032 WARN L179 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 255 DAG size of output: 189 [2018-10-14 16:38:14,474 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 248 DAG size of output: 184 [2018-10-14 16:38:15,977 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 242 DAG size of output: 177 [2018-10-14 16:38:16,466 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 94 [2018-10-14 16:38:16,977 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2018-10-14 16:38:18,140 WARN L179 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 164 [2018-10-14 16:38:18,391 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-14 16:38:19,688 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 239 DAG size of output: 174 [2018-10-14 16:38:21,220 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 244 DAG size of output: 179 [2018-10-14 16:38:21,866 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 116 [2018-10-14 16:38:22,471 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2018-10-14 16:38:23,106 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 116 [2018-10-14 16:38:23,422 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-14 16:38:23,835 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-14 16:38:26,179 WARN L179 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 179 [2018-10-14 16:38:27,317 WARN L179 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 189 [2018-10-14 16:38:28,009 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-14 16:38:28,915 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 166 [2018-10-14 16:38:29,579 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-10-14 16:38:29,949 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-14 16:38:30,252 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:38:30,954 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:38:31,301 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:38:31,688 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-14 16:38:32,828 WARN L179 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 208 [2018-10-14 16:38:33,238 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-14 16:38:33,656 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-14 16:38:34,277 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2018-10-14 16:38:35,051 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2018-10-14 16:38:36,017 WARN L179 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2018-10-14 16:38:36,429 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2018-10-14 16:38:36,687 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:38:37,193 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2018-10-14 16:38:38,337 WARN L179 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 212 [2018-10-14 16:38:38,618 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-14 16:38:39,049 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2018-10-14 16:38:40,284 WARN L179 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 186 [2018-10-14 16:38:41,627 WARN L179 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 194 [2018-10-14 16:38:43,091 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 223 DAG size of output: 187 [2018-10-14 16:38:43,765 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2018-10-14 16:38:44,340 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 121 [2018-10-14 16:38:45,481 WARN L179 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 177 [2018-10-14 16:38:45,937 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2018-10-14 16:38:47,190 WARN L179 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 187 [2018-10-14 16:38:47,514 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-10-14 16:38:48,833 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 228 DAG size of output: 192 [2018-10-14 16:38:49,270 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2018-10-14 16:38:49,684 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2018-10-14 16:38:50,134 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 103 [2018-10-14 16:38:51,141 WARN L179 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 183 [2018-10-14 16:38:51,982 WARN L179 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 155 [2018-10-14 16:38:52,834 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-14 16:38:53,790 WARN L179 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 182 [2018-10-14 16:38:54,008 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-14 16:38:55,008 WARN L179 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 178 [2018-10-14 16:38:55,954 WARN L179 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 167 [2018-10-14 16:38:56,865 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 177 [2018-10-14 16:38:57,300 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2018-10-14 16:38:57,538 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:38:57,831 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:38:59,193 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 145 [2018-10-14 16:38:59,540 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-10-14 16:39:00,427 WARN L179 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 180 [2018-10-14 16:39:01,500 WARN L179 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 176 [2018-10-14 16:39:02,181 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 142 [2018-10-14 16:39:03,155 WARN L179 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 166 [2018-10-14 16:39:03,602 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2018-10-14 16:39:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:39:03,894 INFO L93 Difference]: Finished difference Result 747 states and 751 transitions. [2018-10-14 16:39:03,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-14 16:39:03,895 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 263 [2018-10-14 16:39:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:39:03,897 INFO L225 Difference]: With dead ends: 747 [2018-10-14 16:39:03,898 INFO L226 Difference]: Without dead ends: 747 [2018-10-14 16:39:03,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 6 SyntacticMatches, 11 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22049 ImplicationChecksByTransitivity, 125.2s TimeCoverageRelationStatistics Valid=7442, Invalid=66814, Unknown=0, NotChecked=0, Total=74256 [2018-10-14 16:39:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2018-10-14 16:39:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 525. [2018-10-14 16:39:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-14 16:39:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 530 transitions. [2018-10-14 16:39:03,909 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 530 transitions. Word has length 263 [2018-10-14 16:39:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:39:03,910 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 530 transitions. [2018-10-14 16:39:03,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-14 16:39:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 530 transitions. [2018-10-14 16:39:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-14 16:39:03,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:03,912 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-14 16:39:03,913 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:03,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash 149521955, now seen corresponding path program 7 times [2018-10-14 16:39:03,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:39:04,792 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:39:05,031 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:39:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 10 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:39:09,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:39:09,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 16:39:09,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 16:39:09,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 16:39:09,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=5078, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:39:09,784 INFO L87 Difference]: Start difference. First operand 525 states and 530 transitions. Second operand 73 states. [2018-10-14 16:39:12,527 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 30 [2018-10-14 16:39:12,821 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 35 [2018-10-14 16:39:13,207 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 47 [2018-10-14 16:39:13,793 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 56 [2018-10-14 16:39:14,175 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 60 [2018-10-14 16:39:14,742 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 66 [2018-10-14 16:39:15,161 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2018-10-14 16:39:15,506 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 51 [2018-10-14 16:39:15,777 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 47 [2018-10-14 16:39:16,191 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 51 [2018-10-14 16:39:16,533 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 53 [2018-10-14 16:39:18,269 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2018-10-14 16:39:18,657 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-14 16:39:18,969 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-14 16:39:19,582 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-14 16:39:19,835 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-14 16:39:20,189 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2018-10-14 16:39:20,513 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2018-10-14 16:39:20,726 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-14 16:39:21,107 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-14 16:39:22,750 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 40 [2018-10-14 16:39:23,184 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 55 [2018-10-14 16:39:23,554 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 60 [2018-10-14 16:39:24,084 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 57 [2018-10-14 16:39:24,419 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 58 [2018-10-14 16:39:24,765 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 62 [2018-10-14 16:39:25,301 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2018-10-14 16:39:25,677 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 74 [2018-10-14 16:39:26,014 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 58 [2018-10-14 16:39:26,283 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 54 [2018-10-14 16:39:26,753 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 61 [2018-10-14 16:39:27,442 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 65 [2018-10-14 16:39:27,831 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2018-10-14 16:39:28,695 WARN L179 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-14 16:39:30,085 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 85 [2018-10-14 16:39:30,580 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 81 [2018-10-14 16:39:30,932 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 96 [2018-10-14 16:39:31,348 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 111 [2018-10-14 16:39:31,757 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 106 [2018-10-14 16:39:32,066 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 91 [2018-10-14 16:39:32,428 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 95 [2018-10-14 16:39:33,065 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 100 [2018-10-14 16:39:33,469 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 102 [2018-10-14 16:39:33,986 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 104 [2018-10-14 16:39:34,392 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 102 [2018-10-14 16:39:34,895 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 100 [2018-10-14 16:39:36,203 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 105 [2018-10-14 16:39:36,555 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2018-10-14 16:39:36,901 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2018-10-14 16:39:37,317 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-14 16:39:37,577 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2018-10-14 16:39:37,887 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2018-10-14 16:39:38,894 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 82 [2018-10-14 16:39:39,637 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2018-10-14 16:39:40,079 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 66 [2018-10-14 16:39:40,365 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 72 [2018-10-14 16:39:40,690 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 78 [2018-10-14 16:39:40,974 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 71 [2018-10-14 16:39:41,215 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 65 [2018-10-14 16:39:41,489 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 71 [2018-10-14 16:39:41,936 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2018-10-14 16:39:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:39:42,678 INFO L93 Difference]: Finished difference Result 591 states and 594 transitions. [2018-10-14 16:39:42,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-14 16:39:42,678 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 284 [2018-10-14 16:39:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:39:42,681 INFO L225 Difference]: With dead ends: 591 [2018-10-14 16:39:42,681 INFO L226 Difference]: Without dead ends: 463 [2018-10-14 16:39:42,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7060 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=2562, Invalid=26508, Unknown=0, NotChecked=0, Total=29070 [2018-10-14 16:39:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-10-14 16:39:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 450. [2018-10-14 16:39:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2018-10-14 16:39:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 454 transitions. [2018-10-14 16:39:42,689 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 454 transitions. Word has length 284 [2018-10-14 16:39:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:39:42,689 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 454 transitions. [2018-10-14 16:39:42,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 16:39:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 454 transitions. [2018-10-14 16:39:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-14 16:39:42,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:42,691 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:39:42,692 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:42,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:42,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1138473561, now seen corresponding path program 8 times [2018-10-14 16:39:42,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:39:45,402 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2018-10-14 16:39:45,618 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-14 16:39:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:39:50,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:39:50,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-10-14 16:39:50,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-14 16:39:50,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-14 16:39:50,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=6057, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:39:50,508 INFO L87 Difference]: Start difference. First operand 450 states and 454 transitions. Second operand 80 states. [2018-10-14 16:39:53,187 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:39:53,432 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-14 16:39:53,751 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-14 16:39:54,144 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2018-10-14 16:39:54,528 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-14 16:39:56,071 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2018-10-14 16:39:56,259 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2018-10-14 16:39:57,303 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-14 16:39:57,548 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-14 16:39:57,865 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:39:58,200 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2018-10-14 16:39:58,628 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-14 16:39:58,938 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-14 16:39:59,275 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-10-14 16:39:59,737 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2018-10-14 16:40:00,230 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 91 [2018-10-14 16:40:00,634 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2018-10-14 16:40:00,906 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-14 16:40:01,100 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2018-10-14 16:40:01,460 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:40:01,746 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-14 16:40:02,172 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-14 16:40:02,465 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2018-10-14 16:40:02,716 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-10-14 16:40:03,599 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-14 16:40:03,816 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-14 16:40:04,128 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-10-14 16:40:04,474 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2018-10-14 16:40:04,862 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2018-10-14 16:40:05,451 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2018-10-14 16:40:05,753 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2018-10-14 16:40:06,276 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2018-10-14 16:40:06,619 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2018-10-14 16:40:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:40:15,479 INFO L93 Difference]: Finished difference Result 593 states and 598 transitions. [2018-10-14 16:40:15,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-14 16:40:15,480 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 295 [2018-10-14 16:40:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:40:15,482 INFO L225 Difference]: With dead ends: 593 [2018-10-14 16:40:15,482 INFO L226 Difference]: Without dead ends: 593 [2018-10-14 16:40:15,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8564 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=1869, Invalid=27887, Unknown=0, NotChecked=0, Total=29756 [2018-10-14 16:40:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2018-10-14 16:40:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 457. [2018-10-14 16:40:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-10-14 16:40:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 461 transitions. [2018-10-14 16:40:15,491 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 461 transitions. Word has length 295 [2018-10-14 16:40:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:40:15,492 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 461 transitions. [2018-10-14 16:40:15,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-14 16:40:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 461 transitions. [2018-10-14 16:40:15,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-14 16:40:15,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:40:15,494 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, 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] [2018-10-14 16:40:15,494 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:40:15,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:40:15,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1877317853, now seen corresponding path program 9 times [2018-10-14 16:40:15,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:40:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:40:16,370 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:40:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:40:30,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:40:30,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-10-14 16:40:30,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-14 16:40:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-14 16:40:30,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=12058, Unknown=0, NotChecked=0, Total=12656 [2018-10-14 16:40:30,418 INFO L87 Difference]: Start difference. First operand 457 states and 461 transitions. Second operand 113 states. [2018-10-14 16:40:34,698 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 46 [2018-10-14 16:40:35,309 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 60 [2018-10-14 16:40:36,183 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 71 [2018-10-14 16:40:36,683 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 77 [2018-10-14 16:40:37,258 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 81 [2018-10-14 16:40:37,945 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 87 [2018-10-14 16:40:38,535 WARN L179 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 91 [2018-10-14 16:40:39,086 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 103 [2018-10-14 16:40:39,529 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 99 [2018-10-14 16:40:40,201 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 103 [2018-10-14 16:40:40,823 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 104 [2018-10-14 16:40:41,373 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 60 [2018-10-14 16:40:41,781 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 70 [2018-10-14 16:40:42,149 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 65 [2018-10-14 16:40:42,791 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:40:43,262 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-14 16:40:43,673 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2018-10-14 16:40:44,172 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2018-10-14 16:40:44,732 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2018-10-14 16:40:45,442 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2018-10-14 16:40:46,186 WARN L179 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2018-10-14 16:40:46,993 WARN L179 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 95 [2018-10-14 16:40:47,750 WARN L179 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 92 [2018-10-14 16:40:48,328 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-14 16:40:48,961 WARN L179 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 91 [2018-10-14 16:40:49,685 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 108 [2018-10-14 16:40:50,759 WARN L179 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 116 [2018-10-14 16:40:51,611 WARN L179 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 124 [2018-10-14 16:40:52,217 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 101 [2018-10-14 16:40:52,712 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 94 [2018-10-14 16:40:53,414 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 98 [2018-10-14 16:40:53,967 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 100 [2018-10-14 16:40:54,893 WARN L179 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 114 [2018-10-14 16:40:55,741 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 125 [2018-10-14 16:40:56,406 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 112 [2018-10-14 16:40:57,088 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-14 16:40:57,308 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-10-14 16:40:57,598 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-14 16:40:57,914 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-14 16:40:58,262 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2018-10-14 16:40:58,660 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2018-10-14 16:40:59,153 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 100 [2018-10-14 16:40:59,684 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 103 [2018-10-14 16:40:59,994 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2018-10-14 16:41:00,385 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2018-10-14 16:41:00,938 WARN L179 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 96 [2018-10-14 16:41:01,496 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 104 [2018-10-14 16:41:02,048 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 112 [2018-10-14 16:41:02,480 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 94 [2018-10-14 16:41:02,841 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2018-10-14 16:41:03,432 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 109 [2018-10-14 16:41:04,143 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 114 [2018-10-14 16:41:04,795 WARN L179 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 115 [2018-10-14 16:41:05,417 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 92 [2018-10-14 16:41:05,875 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 104 [2018-10-14 16:41:06,350 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2018-10-14 16:41:07,319 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2018-10-14 16:41:07,586 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-14 16:41:07,879 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2018-10-14 16:41:08,275 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-14 16:41:08,757 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 88 [2018-10-14 16:41:09,250 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2018-10-14 16:41:09,557 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2018-10-14 16:41:09,957 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2018-10-14 16:41:10,424 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2018-10-14 16:41:11,027 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 106 [2018-10-14 16:41:11,642 WARN L179 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 111 [2018-10-14 16:41:12,016 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2018-10-14 16:41:12,341 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-14 16:41:12,857 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2018-10-14 16:41:13,316 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-14 16:41:14,219 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2018-10-14 16:41:14,982 WARN L179 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 124 [2018-10-14 16:41:15,843 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 133 [2018-10-14 16:41:16,710 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2018-10-14 16:41:18,716 WARN L179 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 143 [2018-10-14 16:41:19,204 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-14 16:41:20,300 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-14 16:41:21,074 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 139 [2018-10-14 16:41:21,693 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-14 16:41:22,066 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-14 16:41:22,669 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 129 [2018-10-14 16:41:23,566 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 142 [2018-10-14 16:41:24,499 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 151 [2018-10-14 16:41:24,936 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2018-10-14 16:41:25,275 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-14 16:41:25,714 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2018-10-14 16:41:26,927 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-14 16:41:27,424 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2018-10-14 16:41:27,993 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2018-10-14 16:41:28,274 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-14 16:41:28,813 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2018-10-14 16:41:29,327 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-14 16:41:30,345 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2018-10-14 16:41:30,601 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:41:31,720 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-10-14 16:41:32,295 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 113 [2018-10-14 16:41:32,879 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 107 [2018-10-14 16:41:33,458 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 122 [2018-10-14 16:41:34,066 WARN L179 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 131 [2018-10-14 16:41:34,467 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2018-10-14 16:41:34,843 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2018-10-14 16:41:35,282 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2018-10-14 16:41:35,923 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 103 [2018-10-14 16:41:36,386 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2018-10-14 16:41:36,876 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2018-10-14 16:41:37,382 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 105 [2018-10-14 16:41:37,630 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-14 16:41:37,934 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-10-14 16:41:38,195 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:41:38,515 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-14 16:41:38,945 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:41:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:41:40,252 INFO L93 Difference]: Finished difference Result 807 states and 814 transitions. [2018-10-14 16:41:40,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-14 16:41:40,252 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 306 [2018-10-14 16:41:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:41:40,256 INFO L225 Difference]: With dead ends: 807 [2018-10-14 16:41:40,257 INFO L226 Difference]: Without dead ends: 807 [2018-10-14 16:41:40,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 2 SyntacticMatches, 13 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20656 ImplicationChecksByTransitivity, 69.8s TimeCoverageRelationStatistics Valid=7355, Invalid=63667, Unknown=0, NotChecked=0, Total=71022 [2018-10-14 16:41:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-10-14 16:41:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 568. [2018-10-14 16:41:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2018-10-14 16:41:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 573 transitions. [2018-10-14 16:41:40,268 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 573 transitions. Word has length 306 [2018-10-14 16:41:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:41:40,269 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 573 transitions. [2018-10-14 16:41:40,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-14 16:41:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 573 transitions. [2018-10-14 16:41:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-14 16:41:40,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:41:40,272 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-14 16:41:40,272 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:41:40,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:41:40,272 INFO L82 PathProgramCache]: Analyzing trace with hash 805486903, now seen corresponding path program 10 times [2018-10-14 16:41:40,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:41:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:41:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:41:50,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:41:50,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-14 16:41:50,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-14 16:41:50,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-14 16:41:50,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=7901, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:41:50,080 INFO L87 Difference]: Start difference. First operand 568 states and 573 transitions. Second operand 91 states. [2018-10-14 16:41:52,014 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 34 [2018-10-14 16:41:53,628 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 41 [2018-10-14 16:41:54,061 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 53 [2018-10-14 16:41:54,710 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 62 [2018-10-14 16:41:55,110 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 66 [2018-10-14 16:41:55,587 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2018-10-14 16:41:56,152 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 77 [2018-10-14 16:41:56,642 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 80 [2018-10-14 16:41:56,969 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 51 [2018-10-14 16:41:57,257 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 47 [2018-10-14 16:41:57,708 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 51 [2018-10-14 16:41:58,015 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 53 [2018-10-14 16:41:58,446 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-14 16:41:58,698 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2018-10-14 16:41:58,887 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2018-10-14 16:41:59,203 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-14 16:41:59,559 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-14 16:41:59,965 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-14 16:42:00,335 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-10-14 16:42:00,921 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2018-10-14 16:42:01,397 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 105 [2018-10-14 16:42:02,012 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2018-10-14 16:42:02,653 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 127 [2018-10-14 16:42:03,398 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-14 16:42:03,733 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-10-14 16:42:04,167 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2018-10-14 16:42:04,551 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 90 [2018-10-14 16:42:04,803 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-14 16:42:04,997 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-14 16:42:05,262 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-14 16:42:05,616 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2018-10-14 16:42:05,911 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2018-10-14 16:42:06,415 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2018-10-14 16:42:06,709 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2018-10-14 16:42:06,934 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-14 16:42:07,491 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 16:42:07,866 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2018-10-14 16:42:08,151 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2018-10-14 16:42:08,634 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2018-10-14 16:42:09,060 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 79 [2018-10-14 16:42:09,628 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 99 [2018-10-14 16:42:10,313 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 119 [2018-10-14 16:42:10,936 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 72 [2018-10-14 16:42:11,515 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 104 [2018-10-14 16:42:12,203 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 120 [2018-10-14 16:42:13,096 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 118 [2018-10-14 16:42:13,894 WARN L179 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 134 [2018-10-14 16:42:14,762 WARN L179 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 145 [2018-10-14 16:42:15,278 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 85 [2018-10-14 16:42:15,650 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 74 [2018-10-14 16:42:16,192 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 76 [2018-10-14 16:42:17,910 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2018-10-14 16:42:18,363 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2018-10-14 16:42:19,123 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2018-10-14 16:42:19,441 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2018-10-14 16:42:19,822 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-10-14 16:42:20,284 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2018-10-14 16:42:20,730 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2018-10-14 16:42:20,985 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-10-14 16:42:21,205 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-14 16:42:21,650 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-14 16:42:22,564 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-14 16:42:23,298 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2018-10-14 16:42:23,838 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-14 16:42:24,334 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-14 16:42:24,647 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2018-10-14 16:42:24,884 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2018-10-14 16:42:25,244 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2018-10-14 16:42:25,573 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2018-10-14 16:42:26,167 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 139 [2018-10-14 16:42:26,521 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2018-10-14 16:42:26,988 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2018-10-14 16:42:28,076 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 158 [2018-10-14 16:42:28,857 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 157 [2018-10-14 16:42:29,593 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 151 [2018-10-14 16:42:30,370 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 175 [2018-10-14 16:42:31,317 WARN L179 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 195 [2018-10-14 16:42:32,011 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2018-10-14 16:42:32,542 WARN L179 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2018-10-14 16:42:33,306 WARN L179 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2018-10-14 16:42:34,781 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 175 [2018-10-14 16:42:35,568 WARN L179 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 178 [2018-10-14 16:42:36,340 WARN L179 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 159 [2018-10-14 16:42:37,301 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 163 [2018-10-14 16:42:37,771 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 133 [2018-10-14 16:42:38,517 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2018-10-14 16:42:38,920 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2018-10-14 16:42:39,509 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2018-10-14 16:42:39,870 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-14 16:42:40,259 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2018-10-14 16:42:41,664 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 87 [2018-10-14 16:42:42,406 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2018-10-14 16:42:43,202 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-10-14 16:42:43,562 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2018-10-14 16:42:43,904 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 78 [2018-10-14 16:42:44,259 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 82 [2018-10-14 16:42:44,597 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2018-10-14 16:42:44,807 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-10-14 16:42:45,073 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2018-10-14 16:42:45,316 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2018-10-14 16:42:45,662 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 74 [2018-10-14 16:42:45,987 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2018-10-14 16:42:46,381 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2018-10-14 16:42:46,837 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:42:47,490 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:42:47,937 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:42:48,944 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2018-10-14 16:42:49,659 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2018-10-14 16:42:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:42:49,879 INFO L93 Difference]: Finished difference Result 736 states and 740 transitions. [2018-10-14 16:42:49,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-14 16:42:49,880 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 327 [2018-10-14 16:42:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:42:49,884 INFO L225 Difference]: With dead ends: 736 [2018-10-14 16:42:49,884 INFO L226 Difference]: Without dead ends: 736 [2018-10-14 16:42:49,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14286 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=3585, Invalid=47717, Unknown=0, NotChecked=0, Total=51302 [2018-10-14 16:42:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-10-14 16:42:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 568. [2018-10-14 16:42:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2018-10-14 16:42:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 573 transitions. [2018-10-14 16:42:49,896 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 573 transitions. Word has length 327 [2018-10-14 16:42:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:42:49,896 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 573 transitions. [2018-10-14 16:42:49,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-14 16:42:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 573 transitions. [2018-10-14 16:42:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-14 16:42:49,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:42:49,899 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:42:49,899 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:42:49,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:42:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash -429956877, now seen corresponding path program 11 times [2018-10-14 16:42:49,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:42:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:42:51,201 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:42:53,199 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2018-10-14 16:42:53,400 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2018-10-14 16:42:53,649 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-14 16:42:53,887 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2018-10-14 16:42:54,095 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-10-14 16:42:54,320 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2018-10-14 16:42:54,548 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:42:54,764 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2018-10-14 16:42:54,987 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:42:55,210 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:42:55,507 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-10-14 16:42:55,790 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-10-14 16:42:56,159 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-14 16:42:56,422 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-14 16:42:56,674 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-10-14 16:42:56,901 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-10-14 16:42:57,123 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-10-14 16:42:57,354 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-10-14 16:42:57,564 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-10-14 16:42:57,780 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-14 16:42:58,005 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-10-14 16:42:58,231 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54