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/20051113-1.c_false-valid-memtrack.i_22.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:18:12,637 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:18:12,639 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:18:12,651 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:18:12,651 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:18:12,653 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:18:12,654 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:18:12,656 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:18:12,658 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:18:12,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:18:12,660 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:18:12,660 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:18:12,661 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:18:12,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:18:12,663 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:18:12,664 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:18:12,665 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:18:12,667 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:18:12,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:18:12,671 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:18:12,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:18:12,674 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:18:12,677 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:18:12,686 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 16:18:12,696 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:18:12,696 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:18:12,697 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:18:12,697 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:18:12,698 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:18:12,698 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:18:12,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:18:12,699 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:18:12,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:18:12,699 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:18:12,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:18:12,700 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:18:12,700 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:18:12,701 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:18:12,701 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:18:12,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:18:12,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:18:12,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:18:12,766 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:18:12,766 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:18:12,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/20051113-1.c_false-valid-memtrack.i_22.bpl [2018-10-14 16:18:12,767 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/20051113-1.c_false-valid-memtrack.i_22.bpl' [2018-10-14 16:18:12,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:18:12,839 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:18:12,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:18:12,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:18:12,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:18:12,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:18:12,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:18:12,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:18:12,906 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:18:12,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (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 16:18:12,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:18:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:18:12,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:18:13,816 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:18:13,817 INFO L202 PluginConnector]: Adding new model 20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:18:13 BoogieIcfgContainer [2018-10-14 16:18:13,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:18:13,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:18:13,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:18:13,823 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:18:13,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/2) ... [2018-10-14 16:18:13,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc429bc and model type 20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:18:13, skipping insertion in model container [2018-10-14 16:18:13,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:18:13" (2/2) ... [2018-10-14 16:18:13,827 INFO L112 eAbstractionObserver]: Analyzing ICFG 20051113-1.c_false-valid-memtrack.i_22.bpl [2018-10-14 16:18:13,838 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:18:13,848 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:18:13,866 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:18:13,897 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:18:13,899 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:18:13,899 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:18:13,899 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:18:13,899 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:18:13,899 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:18:13,899 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:18:13,900 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:18:13,900 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:18:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2018-10-14 16:18:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-14 16:18:13,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:13,938 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:13,939 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:13,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:13,947 INFO L82 PathProgramCache]: Analyzing trace with hash 870574299, now seen corresponding path program 1 times [2018-10-14 16:18:14,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:14,379 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 16:18:14,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:18:14,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-14 16:18:14,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-14 16:18:14,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-14 16:18:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-14 16:18:14,409 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2018-10-14 16:18:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:14,519 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-14 16:18:14,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-14 16:18:14,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-14 16:18:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:14,534 INFO L225 Difference]: With dead ends: 111 [2018-10-14 16:18:14,534 INFO L226 Difference]: Without dead ends: 111 [2018-10-14 16:18:14,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-14 16:18:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-14 16:18:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2018-10-14 16:18:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-14 16:18:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-14 16:18:14,585 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 105 [2018-10-14 16:18:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:14,585 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-14 16:18:14,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-14 16:18:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-14 16:18:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-14 16:18:14,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:14,591 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:14,595 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:14,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:14,595 INFO L82 PathProgramCache]: Analyzing trace with hash -266311303, now seen corresponding path program 1 times [2018-10-14 16:18:14,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:14,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:14,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-14 16:18:14,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-14 16:18:14,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-14 16:18:14,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-14 16:18:14,840 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 5 states. [2018-10-14 16:18:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:14,976 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-14 16:18:14,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-14 16:18:14,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-10-14 16:18:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:14,979 INFO L225 Difference]: With dead ends: 114 [2018-10-14 16:18:14,979 INFO L226 Difference]: Without dead ends: 114 [2018-10-14 16:18:14,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:18:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-14 16:18:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2018-10-14 16:18:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-14 16:18:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-14 16:18:14,991 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 108 [2018-10-14 16:18:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:14,992 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-14 16:18:14,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-14 16:18:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-14 16:18:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-14 16:18:14,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:14,995 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:18:14,995 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:14,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash 886815771, now seen corresponding path program 2 times [2018-10-14 16:18:14,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:15,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:15,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-14 16:18:15,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-14 16:18:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-14 16:18:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:18:15,275 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 6 states. [2018-10-14 16:18:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:15,401 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-14 16:18:15,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-14 16:18:15,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-14 16:18:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:15,404 INFO L225 Difference]: With dead ends: 117 [2018-10-14 16:18:15,405 INFO L226 Difference]: Without dead ends: 117 [2018-10-14 16:18:15,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:18:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-14 16:18:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-10-14 16:18:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-14 16:18:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-14 16:18:15,430 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 111 [2018-10-14 16:18:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:15,432 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-14 16:18:15,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-14 16:18:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-14 16:18:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-14 16:18:15,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:15,435 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:15,435 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:15,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1747923399, now seen corresponding path program 3 times [2018-10-14 16:18:15,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:15,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:15,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-14 16:18:15,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:18:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:18:15,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:18:15,654 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 7 states. [2018-10-14 16:18:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:16,103 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-14 16:18:16,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-14 16:18:16,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-10-14 16:18:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:16,105 INFO L225 Difference]: With dead ends: 120 [2018-10-14 16:18:16,105 INFO L226 Difference]: Without dead ends: 120 [2018-10-14 16:18:16,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:18:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-14 16:18:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2018-10-14 16:18:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-14 16:18:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-14 16:18:16,115 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 114 [2018-10-14 16:18:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:16,115 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-14 16:18:16,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:18:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-14 16:18:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-14 16:18:16,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:16,118 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:16,118 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:16,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1559764827, now seen corresponding path program 4 times [2018-10-14 16:18:16,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:16,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:16,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:18:16,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:18:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:18:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:18:16,374 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 8 states. [2018-10-14 16:18:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:16,803 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-14 16:18:16,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:18:16,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2018-10-14 16:18:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:16,811 INFO L225 Difference]: With dead ends: 123 [2018-10-14 16:18:16,811 INFO L226 Difference]: Without dead ends: 123 [2018-10-14 16:18:16,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:18:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-14 16:18:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2018-10-14 16:18:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-14 16:18:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-14 16:18:16,821 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 117 [2018-10-14 16:18:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:16,824 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-14 16:18:16,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:18:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-14 16:18:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-14 16:18:16,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:16,826 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:16,830 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:16,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1465033465, now seen corresponding path program 5 times [2018-10-14 16:18:16,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:17,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:17,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-14 16:18:17,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:18:17,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:18:17,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:18:17,631 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 9 states. [2018-10-14 16:18:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:17,849 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-10-14 16:18:17,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-14 16:18:17,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2018-10-14 16:18:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:17,851 INFO L225 Difference]: With dead ends: 126 [2018-10-14 16:18:17,851 INFO L226 Difference]: Without dead ends: 126 [2018-10-14 16:18:17,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:18:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-14 16:18:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2018-10-14 16:18:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-14 16:18:17,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-14 16:18:17,859 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 120 [2018-10-14 16:18:17,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:17,860 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-14 16:18:17,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:18:17,860 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-14 16:18:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-14 16:18:17,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:17,862 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:17,863 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:17,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:17,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1116541595, now seen corresponding path program 6 times [2018-10-14 16:18:17,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:18,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:18,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:18:18,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:18:18,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:18:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:18:18,170 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 10 states. [2018-10-14 16:18:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:18,370 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-14 16:18:18,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:18:18,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2018-10-14 16:18:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:18,381 INFO L225 Difference]: With dead ends: 129 [2018-10-14 16:18:18,382 INFO L226 Difference]: Without dead ends: 129 [2018-10-14 16:18:18,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-14 16:18:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-14 16:18:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2018-10-14 16:18:18,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-14 16:18:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-14 16:18:18,390 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 123 [2018-10-14 16:18:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:18,391 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-14 16:18:18,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:18:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-14 16:18:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-14 16:18:18,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:18,394 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:18,394 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:18,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:18,394 INFO L82 PathProgramCache]: Analyzing trace with hash 131196857, now seen corresponding path program 7 times [2018-10-14 16:18:18,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:18,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:18,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:18:18,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:18:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:18:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:18:18,790 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 11 states. [2018-10-14 16:18:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:19,121 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-14 16:18:19,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:18:19,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2018-10-14 16:18:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:19,130 INFO L225 Difference]: With dead ends: 132 [2018-10-14 16:18:19,131 INFO L226 Difference]: Without dead ends: 132 [2018-10-14 16:18:19,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:18:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-14 16:18:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2018-10-14 16:18:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-14 16:18:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-14 16:18:19,136 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 126 [2018-10-14 16:18:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:19,137 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-14 16:18:19,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:18:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-14 16:18:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-14 16:18:19,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:19,139 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:19,140 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:19,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1827575259, now seen corresponding path program 8 times [2018-10-14 16:18:19,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:19,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:19,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 16:18:19,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:18:19,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:18:19,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:18:19,616 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 12 states. [2018-10-14 16:18:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:20,069 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-14 16:18:20,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:18:20,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2018-10-14 16:18:20,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:20,073 INFO L225 Difference]: With dead ends: 135 [2018-10-14 16:18:20,073 INFO L226 Difference]: Without dead ends: 135 [2018-10-14 16:18:20,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:18:20,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-14 16:18:20,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2018-10-14 16:18:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-14 16:18:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-14 16:18:20,079 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 129 [2018-10-14 16:18:20,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:20,079 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-14 16:18:20,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:18:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-14 16:18:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-14 16:18:20,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:20,081 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:20,081 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:20,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash -243622791, now seen corresponding path program 9 times [2018-10-14 16:18:20,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:20,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:20,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-14 16:18:20,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-14 16:18:20,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-14 16:18:20,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:18:20,342 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 13 states. [2018-10-14 16:18:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:20,540 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-14 16:18:20,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 16:18:20,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2018-10-14 16:18:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:20,541 INFO L225 Difference]: With dead ends: 138 [2018-10-14 16:18:20,542 INFO L226 Difference]: Without dead ends: 138 [2018-10-14 16:18:20,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:18:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-14 16:18:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2018-10-14 16:18:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-14 16:18:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-14 16:18:20,546 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 132 [2018-10-14 16:18:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:20,546 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-14 16:18:20,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-14 16:18:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-14 16:18:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-14 16:18:20,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:20,548 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:20,548 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:20,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:20,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1804556005, now seen corresponding path program 10 times [2018-10-14 16:18:20,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:20,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:20,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-14 16:18:20,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-14 16:18:20,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-14 16:18:20,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:18:20,773 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 14 states. [2018-10-14 16:18:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:21,039 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-14 16:18:21,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 16:18:21,042 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 135 [2018-10-14 16:18:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:21,043 INFO L225 Difference]: With dead ends: 141 [2018-10-14 16:18:21,043 INFO L226 Difference]: Without dead ends: 141 [2018-10-14 16:18:21,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=331, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:18:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-14 16:18:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2018-10-14 16:18:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-14 16:18:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-14 16:18:21,047 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 135 [2018-10-14 16:18:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:21,048 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-14 16:18:21,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-14 16:18:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-14 16:18:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-14 16:18:21,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:21,049 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:21,050 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:21,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:21,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1955020487, now seen corresponding path program 11 times [2018-10-14 16:18:21,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:22,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:22,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-14 16:18:22,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-14 16:18:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-14 16:18:22,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:18:22,174 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 15 states. [2018-10-14 16:18:22,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:22,853 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-14 16:18:22,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-14 16:18:22,854 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 138 [2018-10-14 16:18:22,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:22,856 INFO L225 Difference]: With dead ends: 144 [2018-10-14 16:18:22,856 INFO L226 Difference]: Without dead ends: 144 [2018-10-14 16:18:22,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:18:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-14 16:18:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2018-10-14 16:18:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-14 16:18:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-14 16:18:22,861 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 138 [2018-10-14 16:18:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:22,861 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-14 16:18:22,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-14 16:18:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-14 16:18:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-14 16:18:22,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:22,862 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:22,862 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:22,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -496546725, now seen corresponding path program 12 times [2018-10-14 16:18:22,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:23,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:23,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-14 16:18:23,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-14 16:18:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-14 16:18:23,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2018-10-14 16:18:23,128 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 16 states. [2018-10-14 16:18:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:23,409 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-14 16:18:23,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-14 16:18:23,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 141 [2018-10-14 16:18:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:23,411 INFO L225 Difference]: With dead ends: 147 [2018-10-14 16:18:23,411 INFO L226 Difference]: Without dead ends: 147 [2018-10-14 16:18:23,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:18:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-14 16:18:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-10-14 16:18:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-14 16:18:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-14 16:18:23,418 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 141 [2018-10-14 16:18:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:23,419 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-14 16:18:23,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-14 16:18:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-14 16:18:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-14 16:18:23,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:23,420 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:23,420 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:23,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1006130681, now seen corresponding path program 13 times [2018-10-14 16:18:23,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:23,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:23,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-14 16:18:23,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-14 16:18:23,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-14 16:18:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:18:23,712 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 17 states. [2018-10-14 16:18:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:24,239 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-14 16:18:24,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:18:24,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 144 [2018-10-14 16:18:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:24,245 INFO L225 Difference]: With dead ends: 150 [2018-10-14 16:18:24,245 INFO L226 Difference]: Without dead ends: 150 [2018-10-14 16:18:24,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2018-10-14 16:18:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-14 16:18:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2018-10-14 16:18:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-14 16:18:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-14 16:18:24,250 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 144 [2018-10-14 16:18:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:24,251 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-14 16:18:24,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-14 16:18:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-14 16:18:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-14 16:18:24,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:24,252 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:24,252 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:24,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:24,253 INFO L82 PathProgramCache]: Analyzing trace with hash 824606619, now seen corresponding path program 14 times [2018-10-14 16:18:24,253 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:24,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:24,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-14 16:18:24,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-14 16:18:24,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-14 16:18:24,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:18:24,663 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 18 states. [2018-10-14 16:18:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:25,055 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-14 16:18:25,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-14 16:18:25,056 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 147 [2018-10-14 16:18:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:25,057 INFO L225 Difference]: With dead ends: 153 [2018-10-14 16:18:25,057 INFO L226 Difference]: Without dead ends: 153 [2018-10-14 16:18:25,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=391, Invalid=601, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:18:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-14 16:18:25,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2018-10-14 16:18:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-14 16:18:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-14 16:18:25,062 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 147 [2018-10-14 16:18:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:25,062 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-14 16:18:25,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-14 16:18:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-14 16:18:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-14 16:18:25,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:25,064 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:25,064 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:25,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:25,065 INFO L82 PathProgramCache]: Analyzing trace with hash 405101241, now seen corresponding path program 15 times [2018-10-14 16:18:25,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:25,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:25,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-14 16:18:25,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:18:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:18:25,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:18:25,472 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 19 states. [2018-10-14 16:18:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:25,856 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-14 16:18:25,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-14 16:18:25,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2018-10-14 16:18:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:25,864 INFO L225 Difference]: With dead ends: 156 [2018-10-14 16:18:25,864 INFO L226 Difference]: Without dead ends: 156 [2018-10-14 16:18:25,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=441, Invalid=681, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:18:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-14 16:18:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2018-10-14 16:18:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-14 16:18:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-14 16:18:25,868 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 150 [2018-10-14 16:18:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:25,868 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-14 16:18:25,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:18:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-14 16:18:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-14 16:18:25,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:25,870 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:25,870 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:25,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:25,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1275216603, now seen corresponding path program 16 times [2018-10-14 16:18:25,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:26,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:26,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-14 16:18:26,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-14 16:18:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-14 16:18:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:18:26,305 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 20 states. [2018-10-14 16:18:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:26,685 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-14 16:18:26,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-14 16:18:26,686 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 153 [2018-10-14 16:18:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:26,687 INFO L225 Difference]: With dead ends: 159 [2018-10-14 16:18:26,687 INFO L226 Difference]: Without dead ends: 159 [2018-10-14 16:18:26,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=494, Invalid=766, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:18:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-14 16:18:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2018-10-14 16:18:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-14 16:18:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-14 16:18:26,691 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 153 [2018-10-14 16:18:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:26,691 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-14 16:18:26,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-14 16:18:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-14 16:18:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-14 16:18:26,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:26,693 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:26,693 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:26,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1540632711, now seen corresponding path program 17 times [2018-10-14 16:18:26,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:26,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:26,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 16:18:26,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:18:26,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:18:26,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:18:26,988 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 21 states. [2018-10-14 16:18:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:27,446 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-14 16:18:27,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-14 16:18:27,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 156 [2018-10-14 16:18:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:27,448 INFO L225 Difference]: With dead ends: 162 [2018-10-14 16:18:27,448 INFO L226 Difference]: Without dead ends: 162 [2018-10-14 16:18:27,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=550, Invalid=856, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:18:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-14 16:18:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2018-10-14 16:18:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-14 16:18:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-14 16:18:27,451 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 156 [2018-10-14 16:18:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:27,451 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-14 16:18:27,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:18:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-14 16:18:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-14 16:18:27,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:27,453 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:27,453 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:27,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:27,453 INFO L82 PathProgramCache]: Analyzing trace with hash 793679387, now seen corresponding path program 18 times [2018-10-14 16:18:27,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:28,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:28,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 16:18:28,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 16:18:28,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 16:18:28,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:18:28,057 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 22 states. [2018-10-14 16:18:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:28,509 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-14 16:18:28,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-14 16:18:28,509 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 159 [2018-10-14 16:18:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:28,510 INFO L225 Difference]: With dead ends: 165 [2018-10-14 16:18:28,510 INFO L226 Difference]: Without dead ends: 165 [2018-10-14 16:18:28,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:18:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-14 16:18:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2018-10-14 16:18:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-14 16:18:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-14 16:18:28,514 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 159 [2018-10-14 16:18:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:28,514 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-14 16:18:28,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 16:18:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-14 16:18:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-14 16:18:28,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:28,516 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:28,516 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:28,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:28,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1825065927, now seen corresponding path program 19 times [2018-10-14 16:18:28,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:29,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:29,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-14 16:18:29,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:18:29,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:18:29,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:18:29,444 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 23 states. [2018-10-14 16:18:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:29,969 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-14 16:18:29,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-14 16:18:29,970 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 162 [2018-10-14 16:18:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:29,971 INFO L225 Difference]: With dead ends: 168 [2018-10-14 16:18:29,971 INFO L226 Difference]: Without dead ends: 168 [2018-10-14 16:18:29,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=671, Invalid=1051, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:18:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-14 16:18:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2018-10-14 16:18:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-14 16:18:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-14 16:18:29,975 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 162 [2018-10-14 16:18:29,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:29,976 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-14 16:18:29,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:18:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-14 16:18:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-14 16:18:29,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:29,977 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:29,977 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:29,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:29,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1214216539, now seen corresponding path program 20 times [2018-10-14 16:18:29,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:30,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:30,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-14 16:18:30,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-14 16:18:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-14 16:18:30,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:18:30,712 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 24 states. [2018-10-14 16:18:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:31,368 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-14 16:18:31,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-14 16:18:31,375 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 165 [2018-10-14 16:18:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:31,376 INFO L225 Difference]: With dead ends: 171 [2018-10-14 16:18:31,376 INFO L226 Difference]: Without dead ends: 171 [2018-10-14 16:18:31,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=736, Invalid=1156, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:18:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-14 16:18:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2018-10-14 16:18:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-14 16:18:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-14 16:18:31,381 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 165 [2018-10-14 16:18:31,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:31,381 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-14 16:18:31,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-14 16:18:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-14 16:18:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-14 16:18:31,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:31,382 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:31,383 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:31,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2022373127, now seen corresponding path program 21 times [2018-10-14 16:18:31,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:32,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:32,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-14 16:18:32,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-14 16:18:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-14 16:18:32,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:18:32,545 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 25 states. [2018-10-14 16:18:33,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:33,047 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-14 16:18:33,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:18:33,049 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 168 [2018-10-14 16:18:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:33,050 INFO L225 Difference]: With dead ends: 174 [2018-10-14 16:18:33,050 INFO L226 Difference]: Without dead ends: 174 [2018-10-14 16:18:33,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=804, Invalid=1266, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:18:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-14 16:18:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2018-10-14 16:18:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-14 16:18:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-14 16:18:33,054 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 168 [2018-10-14 16:18:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:33,054 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-14 16:18:33,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-14 16:18:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-14 16:18:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-14 16:18:33,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:33,056 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:33,056 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:33,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:33,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1249317733, now seen corresponding path program 22 times [2018-10-14 16:18:33,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:34,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:34,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-14 16:18:34,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-14 16:18:34,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-14 16:18:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:18:34,708 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 26 states. [2018-10-14 16:18:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:35,230 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-14 16:18:35,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:18:35,231 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 171 [2018-10-14 16:18:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:35,232 INFO L225 Difference]: With dead ends: 177 [2018-10-14 16:18:35,232 INFO L226 Difference]: Without dead ends: 177 [2018-10-14 16:18:35,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=875, Invalid=1381, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:18:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-14 16:18:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2018-10-14 16:18:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-14 16:18:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-14 16:18:35,235 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 171 [2018-10-14 16:18:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:35,236 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-14 16:18:35,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-14 16:18:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-14 16:18:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-14 16:18:35,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:35,237 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:35,237 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:35,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:35,237 INFO L82 PathProgramCache]: Analyzing trace with hash -770716231, now seen corresponding path program 23 times [2018-10-14 16:18:35,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:36,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:36,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 16:18:36,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 16:18:36,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 16:18:36,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:18:36,621 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 27 states. [2018-10-14 16:18:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:38,664 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-14 16:18:38,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-14 16:18:38,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 174 [2018-10-14 16:18:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:38,666 INFO L225 Difference]: With dead ends: 180 [2018-10-14 16:18:38,666 INFO L226 Difference]: Without dead ends: 180 [2018-10-14 16:18:38,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=949, Invalid=1501, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:18:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-14 16:18:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2018-10-14 16:18:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-14 16:18:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-14 16:18:38,670 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 174 [2018-10-14 16:18:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:38,670 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-14 16:18:38,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 16:18:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-14 16:18:38,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-14 16:18:38,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:38,672 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:38,672 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:38,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2044792869, now seen corresponding path program 24 times [2018-10-14 16:18:38,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:39,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:39,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-14 16:18:39,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-14 16:18:39,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-14 16:18:39,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:18:39,302 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 28 states. [2018-10-14 16:18:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:40,084 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-14 16:18:40,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-14 16:18:40,085 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 177 [2018-10-14 16:18:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:40,086 INFO L225 Difference]: With dead ends: 183 [2018-10-14 16:18:40,086 INFO L226 Difference]: Without dead ends: 183 [2018-10-14 16:18:40,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1026, Invalid=1626, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:18:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-14 16:18:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2018-10-14 16:18:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-14 16:18:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-14 16:18:40,090 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 177 [2018-10-14 16:18:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:40,090 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-14 16:18:40,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-14 16:18:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-14 16:18:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-14 16:18:40,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:40,092 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:40,092 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:40,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:40,092 INFO L82 PathProgramCache]: Analyzing trace with hash 859046521, now seen corresponding path program 25 times [2018-10-14 16:18:40,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:40,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:40,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-14 16:18:40,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-14 16:18:40,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-14 16:18:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2018-10-14 16:18:40,679 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 29 states. [2018-10-14 16:18:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:41,379 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-14 16:18:41,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:18:41,386 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 180 [2018-10-14 16:18:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:41,387 INFO L225 Difference]: With dead ends: 186 [2018-10-14 16:18:41,387 INFO L226 Difference]: Without dead ends: 186 [2018-10-14 16:18:41,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1106, Invalid=1756, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:18:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-14 16:18:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2018-10-14 16:18:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 16:18:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-14 16:18:41,391 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 180 [2018-10-14 16:18:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:41,391 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-14 16:18:41,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-14 16:18:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-14 16:18:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-14 16:18:41,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:41,393 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:41,393 INFO L424 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:41,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash -92962021, now seen corresponding path program 26 times [2018-10-14 16:18:41,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:41,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:41,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-14 16:18:41,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-14 16:18:41,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-14 16:18:41,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2018-10-14 16:18:41,928 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 30 states. [2018-10-14 16:18:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:42,766 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-14 16:18:42,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-14 16:18:42,766 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 183 [2018-10-14 16:18:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:42,767 INFO L225 Difference]: With dead ends: 189 [2018-10-14 16:18:42,768 INFO L226 Difference]: Without dead ends: 189 [2018-10-14 16:18:42,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1189, Invalid=1891, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:18:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-14 16:18:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2018-10-14 16:18:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-14 16:18:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-14 16:18:42,772 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 183 [2018-10-14 16:18:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:42,772 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-14 16:18:42,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-14 16:18:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-14 16:18:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 16:18:42,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:42,774 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:42,774 INFO L424 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:42,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1710381255, now seen corresponding path program 27 times [2018-10-14 16:18:42,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:44,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:44,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:18:44,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:18:44,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:18:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:18:44,364 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 31 states. [2018-10-14 16:18:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:45,240 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-14 16:18:45,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-14 16:18:45,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 186 [2018-10-14 16:18:45,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:45,242 INFO L225 Difference]: With dead ends: 192 [2018-10-14 16:18:45,242 INFO L226 Difference]: Without dead ends: 192 [2018-10-14 16:18:45,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1275, Invalid=2031, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:18:45,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-14 16:18:45,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2018-10-14 16:18:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-14 16:18:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-14 16:18:45,246 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 186 [2018-10-14 16:18:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:45,246 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-14 16:18:45,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:18:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-14 16:18:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-14 16:18:45,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:45,248 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:45,248 INFO L424 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:45,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:45,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1008687525, now seen corresponding path program 28 times [2018-10-14 16:18:45,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:45,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:45,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-14 16:18:45,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-14 16:18:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-14 16:18:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:18:45,898 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 32 states. [2018-10-14 16:18:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:46,803 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-14 16:18:46,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-14 16:18:46,804 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 189 [2018-10-14 16:18:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:46,805 INFO L225 Difference]: With dead ends: 195 [2018-10-14 16:18:46,805 INFO L226 Difference]: Without dead ends: 195 [2018-10-14 16:18:46,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1364, Invalid=2176, Unknown=0, NotChecked=0, Total=3540 [2018-10-14 16:18:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-14 16:18:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2018-10-14 16:18:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-14 16:18:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-14 16:18:46,809 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 189 [2018-10-14 16:18:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:46,810 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-14 16:18:46,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-14 16:18:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-14 16:18:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-14 16:18:46,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:46,813 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:46,813 INFO L424 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:46,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:46,813 INFO L82 PathProgramCache]: Analyzing trace with hash -456606727, now seen corresponding path program 29 times [2018-10-14 16:18:46,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:47,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:47,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:18:47,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:18:47,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:18:47,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:18:47,468 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 33 states. [2018-10-14 16:18:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:48,292 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-14 16:18:48,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-14 16:18:48,293 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 192 [2018-10-14 16:18:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:48,294 INFO L225 Difference]: With dead ends: 198 [2018-10-14 16:18:48,294 INFO L226 Difference]: Without dead ends: 198 [2018-10-14 16:18:48,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1456, Invalid=2326, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:18:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-14 16:18:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2018-10-14 16:18:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-14 16:18:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-14 16:18:48,300 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 192 [2018-10-14 16:18:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:48,300 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-14 16:18:48,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:18:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-14 16:18:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-14 16:18:48,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:48,301 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:48,302 INFO L424 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:48,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1152670107, now seen corresponding path program 30 times [2018-10-14 16:18:48,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:49,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:49,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 16:18:49,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 16:18:49,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 16:18:49,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:18:49,085 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 34 states. [2018-10-14 16:18:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:50,207 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-14 16:18:50,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-14 16:18:50,208 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 195 [2018-10-14 16:18:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:50,209 INFO L225 Difference]: With dead ends: 201 [2018-10-14 16:18:50,209 INFO L226 Difference]: Without dead ends: 201 [2018-10-14 16:18:50,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1551, Invalid=2481, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:18:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-14 16:18:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2018-10-14 16:18:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-14 16:18:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-14 16:18:50,213 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 195 [2018-10-14 16:18:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:50,214 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-14 16:18:50,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 16:18:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-14 16:18:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-14 16:18:50,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:50,216 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:50,216 INFO L424 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:50,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1601093447, now seen corresponding path program 31 times [2018-10-14 16:18:50,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:51,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:51,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-14 16:18:51,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-14 16:18:51,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-14 16:18:51,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2018-10-14 16:18:51,176 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 35 states. [2018-10-14 16:18:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:52,033 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-14 16:18:52,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-14 16:18:52,033 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 198 [2018-10-14 16:18:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:52,035 INFO L225 Difference]: With dead ends: 204 [2018-10-14 16:18:52,035 INFO L226 Difference]: Without dead ends: 204 [2018-10-14 16:18:52,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1649, Invalid=2641, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:18:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-14 16:18:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2018-10-14 16:18:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-14 16:18:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-14 16:18:52,039 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 198 [2018-10-14 16:18:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:52,040 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-14 16:18:52,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-14 16:18:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-14 16:18:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-14 16:18:52,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:52,041 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:52,041 INFO L424 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:52,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:52,042 INFO L82 PathProgramCache]: Analyzing trace with hash -800809765, now seen corresponding path program 32 times [2018-10-14 16:18:52,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:52,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:52,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 16:18:52,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 16:18:52,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 16:18:52,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:18:52,758 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 36 states. [2018-10-14 16:18:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:53,647 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-14 16:18:53,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-14 16:18:53,647 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 201 [2018-10-14 16:18:53,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:53,648 INFO L225 Difference]: With dead ends: 207 [2018-10-14 16:18:53,648 INFO L226 Difference]: Without dead ends: 207 [2018-10-14 16:18:53,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1750, Invalid=2806, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:18:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-14 16:18:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2018-10-14 16:18:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-14 16:18:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-14 16:18:53,653 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 201 [2018-10-14 16:18:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:53,654 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-14 16:18:53,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 16:18:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-14 16:18:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-14 16:18:53,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:53,655 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:53,655 INFO L424 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:53,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash -913099399, now seen corresponding path program 33 times [2018-10-14 16:18:53,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:54,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:54,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-14 16:18:54,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-14 16:18:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-14 16:18:54,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2018-10-14 16:18:54,415 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 37 states. [2018-10-14 16:18:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:55,681 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-14 16:18:55,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-14 16:18:55,681 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 204 [2018-10-14 16:18:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:55,682 INFO L225 Difference]: With dead ends: 210 [2018-10-14 16:18:55,682 INFO L226 Difference]: Without dead ends: 210 [2018-10-14 16:18:55,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1854, Invalid=2976, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:18:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-14 16:18:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2018-10-14 16:18:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-14 16:18:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-14 16:18:55,686 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 204 [2018-10-14 16:18:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:55,686 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-14 16:18:55,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-14 16:18:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-14 16:18:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-14 16:18:55,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:55,687 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:55,687 INFO L424 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:55,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:55,688 INFO L82 PathProgramCache]: Analyzing trace with hash -354062309, now seen corresponding path program 34 times [2018-10-14 16:18:55,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:56,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:56,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-14 16:18:56,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-14 16:18:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-14 16:18:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=737, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:18:56,564 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 38 states. [2018-10-14 16:18:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:57,660 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-14 16:18:57,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-14 16:18:57,660 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 207 [2018-10-14 16:18:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:57,661 INFO L225 Difference]: With dead ends: 213 [2018-10-14 16:18:57,661 INFO L226 Difference]: Without dead ends: 213 [2018-10-14 16:18:57,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1961, Invalid=3151, Unknown=0, NotChecked=0, Total=5112 [2018-10-14 16:18:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-14 16:18:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2018-10-14 16:18:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-14 16:18:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-14 16:18:57,665 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 207 [2018-10-14 16:18:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:57,666 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-14 16:18:57,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-14 16:18:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-14 16:18:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-14 16:18:57,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:57,667 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:57,667 INFO L424 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:57,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1963288007, now seen corresponding path program 35 times [2018-10-14 16:18:57,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:58,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:58,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 16:18:58,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 16:18:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 16:18:58,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=776, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 16:18:58,531 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 39 states. [2018-10-14 16:18:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:59,721 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-14 16:18:59,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:18:59,722 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 210 [2018-10-14 16:18:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:59,723 INFO L225 Difference]: With dead ends: 216 [2018-10-14 16:18:59,723 INFO L226 Difference]: Without dead ends: 216 [2018-10-14 16:18:59,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2071, Invalid=3331, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 16:18:59,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-14 16:18:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2018-10-14 16:18:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-14 16:18:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-14 16:18:59,727 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 210 [2018-10-14 16:18:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:59,727 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-14 16:18:59,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 16:18:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-14 16:18:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-14 16:18:59,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:59,728 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:59,729 INFO L424 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:59,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1981099173, now seen corresponding path program 36 times [2018-10-14 16:18:59,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:01,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:01,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-14 16:19:01,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-14 16:19:01,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-14 16:19:01,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=816, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:19:01,122 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 40 states. [2018-10-14 16:19:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:03,333 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-14 16:19:03,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-14 16:19:03,333 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 213 [2018-10-14 16:19:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:03,334 INFO L225 Difference]: With dead ends: 219 [2018-10-14 16:19:03,334 INFO L226 Difference]: Without dead ends: 219 [2018-10-14 16:19:03,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2184, Invalid=3516, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:19:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-14 16:19:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2018-10-14 16:19:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-14 16:19:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-14 16:19:03,337 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 213 [2018-10-14 16:19:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:03,337 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-14 16:19:03,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-14 16:19:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-14 16:19:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-14 16:19:03,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:03,339 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:03,339 INFO L424 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:03,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash -17600775, now seen corresponding path program 37 times [2018-10-14 16:19:03,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:04,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:04,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:19:04,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:19:04,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:19:04,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=857, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:19:04,310 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 41 states. [2018-10-14 16:19:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:05,753 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-14 16:19:05,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:19:05,754 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 216 [2018-10-14 16:19:05,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:05,755 INFO L225 Difference]: With dead ends: 222 [2018-10-14 16:19:05,755 INFO L226 Difference]: Without dead ends: 222 [2018-10-14 16:19:05,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2300, Invalid=3706, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:19:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-14 16:19:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2018-10-14 16:19:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-14 16:19:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-14 16:19:05,758 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 216 [2018-10-14 16:19:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:05,759 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-14 16:19:05,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:19:05,759 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-14 16:19:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-14 16:19:05,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:05,760 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:05,760 INFO L424 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:05,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:05,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1403569819, now seen corresponding path program 38 times [2018-10-14 16:19:05,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:06,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:06,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-14 16:19:06,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-14 16:19:06,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-14 16:19:06,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=899, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:19:06,684 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 42 states. [2018-10-14 16:19:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:07,873 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-14 16:19:07,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-14 16:19:07,873 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 219 [2018-10-14 16:19:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:07,874 INFO L225 Difference]: With dead ends: 225 [2018-10-14 16:19:07,874 INFO L226 Difference]: Without dead ends: 225 [2018-10-14 16:19:07,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2419, Invalid=3901, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:19:07,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-14 16:19:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2018-10-14 16:19:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-14 16:19:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-14 16:19:07,878 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 219 [2018-10-14 16:19:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:07,878 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-14 16:19:07,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-14 16:19:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-14 16:19:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-14 16:19:07,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:07,880 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:07,880 INFO L424 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:07,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:07,880 INFO L82 PathProgramCache]: Analyzing trace with hash -290868295, now seen corresponding path program 39 times [2018-10-14 16:19:07,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:08,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:08,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:19:08,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:19:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:19:08,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=942, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:19:08,977 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 43 states. [2018-10-14 16:19:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:10,590 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-14 16:19:10,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-14 16:19:10,591 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 222 [2018-10-14 16:19:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:10,592 INFO L225 Difference]: With dead ends: 228 [2018-10-14 16:19:10,592 INFO L226 Difference]: Without dead ends: 228 [2018-10-14 16:19:10,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2541, Invalid=4101, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 16:19:10,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-14 16:19:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2018-10-14 16:19:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-14 16:19:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-14 16:19:10,596 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 222 [2018-10-14 16:19:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:10,597 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-14 16:19:10,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:19:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-14 16:19:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-14 16:19:10,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:10,598 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:10,598 INFO L424 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:10,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash -546092581, now seen corresponding path program 40 times [2018-10-14 16:19:10,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:11,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:11,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-14 16:19:11,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-14 16:19:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-14 16:19:11,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=986, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:19:11,660 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 44 states. [2018-10-14 16:19:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:12,962 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-14 16:19:12,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:19:12,962 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 225 [2018-10-14 16:19:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:12,963 INFO L225 Difference]: With dead ends: 231 [2018-10-14 16:19:12,964 INFO L226 Difference]: Without dead ends: 231 [2018-10-14 16:19:12,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2666, Invalid=4306, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:19:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-14 16:19:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2018-10-14 16:19:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-14 16:19:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-14 16:19:12,968 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 225 [2018-10-14 16:19:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:12,968 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-14 16:19:12,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-14 16:19:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-14 16:19:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-14 16:19:12,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:12,970 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:12,970 INFO L424 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:12,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:12,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1840682887, now seen corresponding path program 41 times [2018-10-14 16:19:12,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:14,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:14,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-14 16:19:14,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-14 16:19:14,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-14 16:19:14,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=1031, Unknown=0, NotChecked=0, Total=1980 [2018-10-14 16:19:14,089 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 45 states. [2018-10-14 16:19:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:15,838 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-14 16:19:15,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-14 16:19:15,838 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 228 [2018-10-14 16:19:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:15,839 INFO L225 Difference]: With dead ends: 234 [2018-10-14 16:19:15,839 INFO L226 Difference]: Without dead ends: 234 [2018-10-14 16:19:15,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2794, Invalid=4516, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:19:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-14 16:19:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2018-10-14 16:19:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-14 16:19:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-14 16:19:15,843 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 228 [2018-10-14 16:19:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:15,843 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-14 16:19:15,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-14 16:19:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-14 16:19:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-14 16:19:15,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:15,845 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:15,845 INFO L424 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:15,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash -174170853, now seen corresponding path program 42 times [2018-10-14 16:19:15,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:16,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:16,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-14 16:19:16,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-14 16:19:16,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-14 16:19:16,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=1077, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:19:16,934 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 46 states. [2018-10-14 16:19:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:18,447 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-14 16:19:18,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 16:19:18,447 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 231 [2018-10-14 16:19:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:18,448 INFO L225 Difference]: With dead ends: 237 [2018-10-14 16:19:18,448 INFO L226 Difference]: Without dead ends: 237 [2018-10-14 16:19:18,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2925, Invalid=4731, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:19:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-14 16:19:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2018-10-14 16:19:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-14 16:19:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-14 16:19:18,453 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 231 [2018-10-14 16:19:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:18,453 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-14 16:19:18,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-14 16:19:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-14 16:19:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-14 16:19:18,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:18,455 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:18,455 INFO L424 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:18,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:18,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1358859577, now seen corresponding path program 43 times [2018-10-14 16:19:18,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:19,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:19,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 16:19:19,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 16:19:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 16:19:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=1124, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 16:19:19,621 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 47 states. [2018-10-14 16:19:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:21,320 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-14 16:19:21,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-14 16:19:21,321 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 234 [2018-10-14 16:19:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:21,322 INFO L225 Difference]: With dead ends: 240 [2018-10-14 16:19:21,322 INFO L226 Difference]: Without dead ends: 240 [2018-10-14 16:19:21,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3059, Invalid=4951, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:19:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-14 16:19:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2018-10-14 16:19:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-14 16:19:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-14 16:19:21,326 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 234 [2018-10-14 16:19:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:21,326 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-14 16:19:21,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 16:19:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-14 16:19:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-14 16:19:21,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:21,327 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:21,328 INFO L424 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:21,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:21,328 INFO L82 PathProgramCache]: Analyzing trace with hash -813825957, now seen corresponding path program 44 times [2018-10-14 16:19:21,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:22,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:22,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-14 16:19:22,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-14 16:19:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-14 16:19:22,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=1172, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:19:22,411 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 48 states. [2018-10-14 16:19:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:23,965 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-14 16:19:23,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-14 16:19:23,966 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 237 [2018-10-14 16:19:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:23,967 INFO L225 Difference]: With dead ends: 243 [2018-10-14 16:19:23,967 INFO L226 Difference]: Without dead ends: 243 [2018-10-14 16:19:23,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3196, Invalid=5176, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:19:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-14 16:19:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2018-10-14 16:19:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-14 16:19:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-14 16:19:23,970 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 237 [2018-10-14 16:19:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:23,971 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-14 16:19:23,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-14 16:19:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-14 16:19:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-14 16:19:23,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:23,972 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:23,973 INFO L424 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:23,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:23,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2131418631, now seen corresponding path program 45 times [2018-10-14 16:19:23,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:25,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:25,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-14 16:19:25,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-14 16:19:25,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-14 16:19:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=1221, Unknown=0, NotChecked=0, Total=2352 [2018-10-14 16:19:25,080 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 49 states. [2018-10-14 16:19:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:26,912 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-14 16:19:26,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-14 16:19:26,912 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 240 [2018-10-14 16:19:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:26,913 INFO L225 Difference]: With dead ends: 246 [2018-10-14 16:19:26,913 INFO L226 Difference]: Without dead ends: 246 [2018-10-14 16:19:26,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3336, Invalid=5406, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:19:26,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-14 16:19:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2018-10-14 16:19:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-14 16:19:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-14 16:19:26,916 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 240 [2018-10-14 16:19:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:26,917 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-14 16:19:26,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-14 16:19:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-14 16:19:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-14 16:19:26,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:26,918 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:26,918 INFO L424 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:26,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1466315675, now seen corresponding path program 46 times [2018-10-14 16:19:26,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:28,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:28,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-14 16:19:28,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-14 16:19:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-14 16:19:28,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:19:28,048 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 50 states. [2018-10-14 16:19:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:29,645 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-14 16:19:29,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-14 16:19:29,646 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 243 [2018-10-14 16:19:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:29,647 INFO L225 Difference]: With dead ends: 249 [2018-10-14 16:19:29,647 INFO L226 Difference]: Without dead ends: 249 [2018-10-14 16:19:29,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3479, Invalid=5641, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:19:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-14 16:19:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2018-10-14 16:19:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-14 16:19:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-14 16:19:29,650 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 243 [2018-10-14 16:19:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:29,650 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-14 16:19:29,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-14 16:19:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-14 16:19:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-14 16:19:29,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:29,651 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:29,651 INFO L424 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:29,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:29,652 INFO L82 PathProgramCache]: Analyzing trace with hash 660154041, now seen corresponding path program 47 times [2018-10-14 16:19:29,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:31,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:31,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-14 16:19:31,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-14 16:19:31,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-14 16:19:31,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=1322, Unknown=0, NotChecked=0, Total=2550 [2018-10-14 16:19:31,260 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 51 states. [2018-10-14 16:19:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:33,036 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-14 16:19:33,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-14 16:19:33,037 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 246 [2018-10-14 16:19:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:33,038 INFO L225 Difference]: With dead ends: 252 [2018-10-14 16:19:33,038 INFO L226 Difference]: Without dead ends: 252 [2018-10-14 16:19:33,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3625, Invalid=5881, Unknown=0, NotChecked=0, Total=9506 [2018-10-14 16:19:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-14 16:19:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2018-10-14 16:19:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-14 16:19:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-14 16:19:33,042 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 246 [2018-10-14 16:19:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:33,042 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-14 16:19:33,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-14 16:19:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-14 16:19:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-14 16:19:33,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:33,044 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:33,044 INFO L424 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:33,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1756034779, now seen corresponding path program 48 times [2018-10-14 16:19:33,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:34,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:34,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:19:34,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:19:34,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:19:34,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=1374, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:19:34,233 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 52 states. [2018-10-14 16:19:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:36,324 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-14 16:19:36,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-14 16:19:36,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 249 [2018-10-14 16:19:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:36,325 INFO L225 Difference]: With dead ends: 255 [2018-10-14 16:19:36,325 INFO L226 Difference]: Without dead ends: 255 [2018-10-14 16:19:36,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3774, Invalid=6126, Unknown=0, NotChecked=0, Total=9900 [2018-10-14 16:19:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-14 16:19:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2018-10-14 16:19:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-14 16:19:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-14 16:19:36,330 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 249 [2018-10-14 16:19:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:36,330 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-14 16:19:36,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:19:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-14 16:19:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-14 16:19:36,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:36,332 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:36,332 INFO L424 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:36,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1202283655, now seen corresponding path program 49 times [2018-10-14 16:19:36,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:37,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:37,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-14 16:19:37,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-14 16:19:37,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-14 16:19:37,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=1427, Unknown=0, NotChecked=0, Total=2756 [2018-10-14 16:19:37,664 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 53 states. [2018-10-14 16:19:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:39,670 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-14 16:19:39,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-14 16:19:39,671 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 252 [2018-10-14 16:19:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:39,672 INFO L225 Difference]: With dead ends: 258 [2018-10-14 16:19:39,672 INFO L226 Difference]: Without dead ends: 258 [2018-10-14 16:19:39,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3926, Invalid=6376, Unknown=0, NotChecked=0, Total=10302 [2018-10-14 16:19:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-14 16:19:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2018-10-14 16:19:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-14 16:19:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-14 16:19:39,682 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 252 [2018-10-14 16:19:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:39,682 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-14 16:19:39,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-14 16:19:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-14 16:19:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-14 16:19:39,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:39,684 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:39,684 INFO L424 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:39,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash 262162971, now seen corresponding path program 50 times [2018-10-14 16:19:39,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:41,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:41,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-14 16:19:41,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-14 16:19:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-14 16:19:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:19:41,398 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 54 states. [2018-10-14 16:19:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:43,459 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-14 16:19:43,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-14 16:19:43,459 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 255 [2018-10-14 16:19:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:43,461 INFO L225 Difference]: With dead ends: 261 [2018-10-14 16:19:43,461 INFO L226 Difference]: Without dead ends: 261 [2018-10-14 16:19:43,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4081, Invalid=6631, Unknown=0, NotChecked=0, Total=10712 [2018-10-14 16:19:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-14 16:19:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2018-10-14 16:19:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-14 16:19:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-14 16:19:43,465 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 255 [2018-10-14 16:19:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:43,465 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-14 16:19:43,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-14 16:19:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-14 16:19:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-14 16:19:43,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:43,468 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:43,468 INFO L424 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:43,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash -686194631, now seen corresponding path program 51 times [2018-10-14 16:19:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:44,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:44,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-14 16:19:44,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-14 16:19:44,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-14 16:19:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1434, Invalid=1536, Unknown=0, NotChecked=0, Total=2970 [2018-10-14 16:19:44,893 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 55 states. [2018-10-14 16:19:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:47,141 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2018-10-14 16:19:47,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:19:47,141 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 258 [2018-10-14 16:19:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:47,142 INFO L225 Difference]: With dead ends: 264 [2018-10-14 16:19:47,142 INFO L226 Difference]: Without dead ends: 264 [2018-10-14 16:19:47,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4239, Invalid=6891, Unknown=0, NotChecked=0, Total=11130 [2018-10-14 16:19:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-14 16:19:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2018-10-14 16:19:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-14 16:19:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-10-14 16:19:47,145 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 258 [2018-10-14 16:19:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:47,146 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-10-14 16:19:47,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-14 16:19:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-10-14 16:19:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-14 16:19:47,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:47,147 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:47,147 INFO L424 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:47,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash -912642725, now seen corresponding path program 52 times [2018-10-14 16:19:47,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:48,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:48,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 16:19:48,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 16:19:48,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 16:19:48,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=1592, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:19:48,501 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 56 states. [2018-10-14 16:19:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:50,646 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-14 16:19:50,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:19:50,646 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 261 [2018-10-14 16:19:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:50,647 INFO L225 Difference]: With dead ends: 267 [2018-10-14 16:19:50,647 INFO L226 Difference]: Without dead ends: 267 [2018-10-14 16:19:50,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4400, Invalid=7156, Unknown=0, NotChecked=0, Total=11556 [2018-10-14 16:19:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-14 16:19:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2018-10-14 16:19:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-14 16:19:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-10-14 16:19:50,651 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 261 [2018-10-14 16:19:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:50,652 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-10-14 16:19:50,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 16:19:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-10-14 16:19:50,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-14 16:19:50,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:50,653 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:50,653 INFO L424 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:50,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:50,654 INFO L82 PathProgramCache]: Analyzing trace with hash 365810937, now seen corresponding path program 53 times [2018-10-14 16:19:50,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:52,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:52,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:19:52,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:19:52,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:19:52,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=1649, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:19:52,468 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 57 states. [2018-10-14 16:19:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:54,690 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2018-10-14 16:19:54,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-14 16:19:54,691 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 264 [2018-10-14 16:19:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:54,692 INFO L225 Difference]: With dead ends: 270 [2018-10-14 16:19:54,692 INFO L226 Difference]: Without dead ends: 270 [2018-10-14 16:19:54,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4564, Invalid=7426, Unknown=0, NotChecked=0, Total=11990 [2018-10-14 16:19:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-14 16:19:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2018-10-14 16:19:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-10-14 16:19:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-10-14 16:19:54,695 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 264 [2018-10-14 16:19:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:54,696 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-10-14 16:19:54,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:19:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-10-14 16:19:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-14 16:19:54,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:54,697 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:54,698 INFO L424 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:54,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash -991125349, now seen corresponding path program 54 times [2018-10-14 16:19:54,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:56,244 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:56,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-14 16:19:56,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-14 16:19:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-14 16:19:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=1707, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:19:56,246 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 58 states. [2018-10-14 16:19:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:58,612 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-14 16:19:58,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-14 16:19:58,612 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 267 [2018-10-14 16:19:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:58,613 INFO L225 Difference]: With dead ends: 273 [2018-10-14 16:19:58,614 INFO L226 Difference]: Without dead ends: 273 [2018-10-14 16:19:58,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4731, Invalid=7701, Unknown=0, NotChecked=0, Total=12432 [2018-10-14 16:19:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-14 16:19:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2018-10-14 16:19:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-14 16:19:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-14 16:19:58,617 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 267 [2018-10-14 16:19:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:58,617 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-14 16:19:58,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-14 16:19:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-14 16:19:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-14 16:19:58,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:58,618 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:58,619 INFO L424 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:58,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:58,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1247831623, now seen corresponding path program 55 times [2018-10-14 16:19:58,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:00,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:00,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-14 16:20:00,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-14 16:20:00,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-14 16:20:00,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=1766, Unknown=0, NotChecked=0, Total=3422 [2018-10-14 16:20:00,170 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 59 states. [2018-10-14 16:20:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:02,590 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2018-10-14 16:20:02,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-14 16:20:02,591 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 270 [2018-10-14 16:20:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:02,592 INFO L225 Difference]: With dead ends: 276 [2018-10-14 16:20:02,592 INFO L226 Difference]: Without dead ends: 276 [2018-10-14 16:20:02,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4901, Invalid=7981, Unknown=0, NotChecked=0, Total=12882 [2018-10-14 16:20:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-14 16:20:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2018-10-14 16:20:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-14 16:20:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-10-14 16:20:02,595 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 270 [2018-10-14 16:20:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:02,595 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-10-14 16:20:02,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-14 16:20:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-10-14 16:20:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-14 16:20:02,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:02,597 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:02,597 INFO L424 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:02,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash 552313819, now seen corresponding path program 56 times [2018-10-14 16:20:02,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:04,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:04,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-14 16:20:04,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-14 16:20:04,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-14 16:20:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1714, Invalid=1826, Unknown=0, NotChecked=0, Total=3540 [2018-10-14 16:20:04,263 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 60 states. [2018-10-14 16:20:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:06,931 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-14 16:20:06,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-14 16:20:06,931 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 273 [2018-10-14 16:20:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:06,932 INFO L225 Difference]: With dead ends: 279 [2018-10-14 16:20:06,932 INFO L226 Difference]: Without dead ends: 279 [2018-10-14 16:20:06,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5074, Invalid=8266, Unknown=0, NotChecked=0, Total=13340 [2018-10-14 16:20:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-14 16:20:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2018-10-14 16:20:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-14 16:20:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-10-14 16:20:06,936 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 273 [2018-10-14 16:20:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:06,936 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-10-14 16:20:06,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-14 16:20:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-10-14 16:20:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-14 16:20:06,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:06,938 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:06,938 INFO L424 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:06,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1723518585, now seen corresponding path program 57 times [2018-10-14 16:20:06,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:08,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:08,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-14 16:20:08,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-14 16:20:08,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-14 16:20:08,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=1887, Unknown=0, NotChecked=0, Total=3660 [2018-10-14 16:20:08,974 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 61 states. [2018-10-14 16:20:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:11,561 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2018-10-14 16:20:11,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 16:20:11,561 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 276 [2018-10-14 16:20:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:11,562 INFO L225 Difference]: With dead ends: 282 [2018-10-14 16:20:11,562 INFO L226 Difference]: Without dead ends: 282 [2018-10-14 16:20:11,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5250, Invalid=8556, Unknown=0, NotChecked=0, Total=13806 [2018-10-14 16:20:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-14 16:20:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2018-10-14 16:20:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-14 16:20:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-10-14 16:20:11,566 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 276 [2018-10-14 16:20:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:11,566 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-10-14 16:20:11,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-14 16:20:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-10-14 16:20:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-14 16:20:11,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:11,568 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:11,568 INFO L424 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:11,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 770389787, now seen corresponding path program 58 times [2018-10-14 16:20:11,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:13,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:13,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:20:13,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:20:13,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:20:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1833, Invalid=1949, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:20:13,363 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 62 states. [2018-10-14 16:20:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:15,946 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-14 16:20:15,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-14 16:20:15,947 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 279 [2018-10-14 16:20:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:15,948 INFO L225 Difference]: With dead ends: 285 [2018-10-14 16:20:15,948 INFO L226 Difference]: Without dead ends: 285 [2018-10-14 16:20:15,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5429, Invalid=8851, Unknown=0, NotChecked=0, Total=14280 [2018-10-14 16:20:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-10-14 16:20:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2018-10-14 16:20:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-14 16:20:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-14 16:20:15,951 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 279 [2018-10-14 16:20:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:15,951 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-14 16:20:15,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:20:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-14 16:20:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-14 16:20:15,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:15,953 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:15,953 INFO L424 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:15,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash 139162425, now seen corresponding path program 59 times [2018-10-14 16:20:15,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:17,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:17,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 16:20:17,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 16:20:17,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 16:20:17,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2012, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 16:20:17,863 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 63 states. [2018-10-14 16:20:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:20,482 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2018-10-14 16:20:20,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-14 16:20:20,482 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 282 [2018-10-14 16:20:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:20,484 INFO L225 Difference]: With dead ends: 288 [2018-10-14 16:20:20,484 INFO L226 Difference]: Without dead ends: 288 [2018-10-14 16:20:20,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5611, Invalid=9151, Unknown=0, NotChecked=0, Total=14762 [2018-10-14 16:20:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-14 16:20:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2018-10-14 16:20:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-14 16:20:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-10-14 16:20:20,488 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 282 [2018-10-14 16:20:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:20,489 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-10-14 16:20:20,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 16:20:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-10-14 16:20:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-14 16:20:20,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:20,490 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:20,490 INFO L424 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:20,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1388357029, now seen corresponding path program 60 times [2018-10-14 16:20:20,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:22,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:22,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-14 16:20:22,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-14 16:20:22,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-14 16:20:22,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1956, Invalid=2076, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:20:22,549 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 64 states. [2018-10-14 16:20:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:25,197 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-10-14 16:20:25,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-14 16:20:25,198 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 285 [2018-10-14 16:20:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:25,199 INFO L225 Difference]: With dead ends: 291 [2018-10-14 16:20:25,199 INFO L226 Difference]: Without dead ends: 291 [2018-10-14 16:20:25,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5796, Invalid=9456, Unknown=0, NotChecked=0, Total=15252 [2018-10-14 16:20:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-14 16:20:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2018-10-14 16:20:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-14 16:20:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-10-14 16:20:25,203 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 285 [2018-10-14 16:20:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:25,204 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-10-14 16:20:25,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-14 16:20:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-10-14 16:20:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-14 16:20:25,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:25,205 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:25,205 INFO L424 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:25,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:25,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1753057273, now seen corresponding path program 61 times [2018-10-14 16:20:25,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 0 proven. 5551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:27,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:27,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-14 16:20:27,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-14 16:20:27,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-14 16:20:27,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2019, Invalid=2141, Unknown=0, NotChecked=0, Total=4160 [2018-10-14 16:20:27,386 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 65 states. [2018-10-14 16:20:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:30,193 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2018-10-14 16:20:30,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-14 16:20:30,193 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 288 [2018-10-14 16:20:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:30,194 INFO L225 Difference]: With dead ends: 294 [2018-10-14 16:20:30,194 INFO L226 Difference]: Without dead ends: 294 [2018-10-14 16:20:30,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5984, Invalid=9766, Unknown=0, NotChecked=0, Total=15750 [2018-10-14 16:20:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-14 16:20:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2018-10-14 16:20:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-10-14 16:20:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-10-14 16:20:30,198 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 288 [2018-10-14 16:20:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:30,198 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-10-14 16:20:30,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-14 16:20:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-10-14 16:20:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-14 16:20:30,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:30,199 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:30,199 INFO L424 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:30,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:30,200 INFO L82 PathProgramCache]: Analyzing trace with hash 289148315, now seen corresponding path program 62 times [2018-10-14 16:20:30,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:32,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:32,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-14 16:20:32,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-14 16:20:32,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-14 16:20:32,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:20:32,260 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 66 states. [2018-10-14 16:20:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:35,135 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-14 16:20:35,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:20:35,135 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 291 [2018-10-14 16:20:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:35,136 INFO L225 Difference]: With dead ends: 297 [2018-10-14 16:20:35,136 INFO L226 Difference]: Without dead ends: 297 [2018-10-14 16:20:35,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6175, Invalid=10081, Unknown=0, NotChecked=0, Total=16256 [2018-10-14 16:20:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-10-14 16:20:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2018-10-14 16:20:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-14 16:20:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-14 16:20:35,139 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 291 [2018-10-14 16:20:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:35,139 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-14 16:20:35,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-14 16:20:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-14 16:20:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-14 16:20:35,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:35,141 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:35,141 INFO L424 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:35,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:35,141 INFO L82 PathProgramCache]: Analyzing trace with hash 75304121, now seen corresponding path program 63 times [2018-10-14 16:20:35,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:37,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:37,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 16:20:37,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 16:20:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 16:20:37,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2148, Invalid=2274, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:20:37,074 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 67 states. [2018-10-14 16:20:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:40,103 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2018-10-14 16:20:40,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-14 16:20:40,103 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 294 [2018-10-14 16:20:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:40,104 INFO L225 Difference]: With dead ends: 300 [2018-10-14 16:20:40,105 INFO L226 Difference]: Without dead ends: 300 [2018-10-14 16:20:40,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6369, Invalid=10401, Unknown=0, NotChecked=0, Total=16770 [2018-10-14 16:20:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-10-14 16:20:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2018-10-14 16:20:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-10-14 16:20:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-10-14 16:20:40,108 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 294 [2018-10-14 16:20:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:40,109 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-10-14 16:20:40,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 16:20:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-10-14 16:20:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-14 16:20:40,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:40,110 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:40,110 INFO L424 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:40,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1120579365, now seen corresponding path program 64 times [2018-10-14 16:20:40,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 0 proven. 6112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:42,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:42,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-14 16:20:42,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-14 16:20:42,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-14 16:20:42,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=2342, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:20:42,144 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 68 states. [2018-10-14 16:20:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:45,202 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-10-14 16:20:45,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-14 16:20:45,202 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 297 [2018-10-14 16:20:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:45,203 INFO L225 Difference]: With dead ends: 303 [2018-10-14 16:20:45,203 INFO L226 Difference]: Without dead ends: 303 [2018-10-14 16:20:45,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6566, Invalid=10726, Unknown=0, NotChecked=0, Total=17292 [2018-10-14 16:20:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-14 16:20:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2018-10-14 16:20:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-10-14 16:20:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-10-14 16:20:45,207 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 297 [2018-10-14 16:20:45,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:45,208 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-10-14 16:20:45,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-14 16:20:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-10-14 16:20:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-14 16:20:45,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:45,209 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:45,209 INFO L424 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:45,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash -931790471, now seen corresponding path program 65 times [2018-10-14 16:20:45,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:47,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:47,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-14 16:20:47,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-14 16:20:47,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-14 16:20:47,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=2411, Unknown=0, NotChecked=0, Total=4692 [2018-10-14 16:20:47,271 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 69 states. [2018-10-14 16:20:50,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:50,481 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2018-10-14 16:20:50,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-14 16:20:50,481 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 300 [2018-10-14 16:20:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:50,482 INFO L225 Difference]: With dead ends: 306 [2018-10-14 16:20:50,482 INFO L226 Difference]: Without dead ends: 306 [2018-10-14 16:20:50,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6766, Invalid=11056, Unknown=0, NotChecked=0, Total=17822 [2018-10-14 16:20:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-14 16:20:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2018-10-14 16:20:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-14 16:20:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-10-14 16:20:50,486 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 300 [2018-10-14 16:20:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:50,486 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-10-14 16:20:50,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-14 16:20:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-10-14 16:20:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-14 16:20:50,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:50,488 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:50,488 INFO L424 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:50,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:50,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1165960219, now seen corresponding path program 66 times [2018-10-14 16:20:50,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:52,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:52,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-14 16:20:52,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-14 16:20:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-14 16:20:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=2481, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:20:52,708 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 70 states. [2018-10-14 16:20:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:55,884 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-14 16:20:55,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-14 16:20:55,884 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 303 [2018-10-14 16:20:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:55,886 INFO L225 Difference]: With dead ends: 309 [2018-10-14 16:20:55,886 INFO L226 Difference]: Without dead ends: 309 [2018-10-14 16:20:55,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6969, Invalid=11391, Unknown=0, NotChecked=0, Total=18360 [2018-10-14 16:20:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-14 16:20:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2018-10-14 16:20:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-14 16:20:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-14 16:20:55,889 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 303 [2018-10-14 16:20:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:55,889 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-14 16:20:55,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-14 16:20:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-14 16:20:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-14 16:20:55,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:55,891 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:55,891 INFO L424 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:55,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:55,891 INFO L82 PathProgramCache]: Analyzing trace with hash -812358087, now seen corresponding path program 67 times [2018-10-14 16:20:55,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 0 proven. 6700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:58,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:58,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-14 16:20:58,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-14 16:20:58,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-14 16:20:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=2552, Unknown=0, NotChecked=0, Total=4970 [2018-10-14 16:20:58,363 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 71 states. [2018-10-14 16:21:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:01,432 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2018-10-14 16:21:01,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 16:21:01,432 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 306 [2018-10-14 16:21:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:01,433 INFO L225 Difference]: With dead ends: 312 [2018-10-14 16:21:01,433 INFO L226 Difference]: Without dead ends: 312 [2018-10-14 16:21:01,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7175, Invalid=11731, Unknown=0, NotChecked=0, Total=18906 [2018-10-14 16:21:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-14 16:21:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2018-10-14 16:21:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-10-14 16:21:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-10-14 16:21:01,437 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 306 [2018-10-14 16:21:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:01,437 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-10-14 16:21:01,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-14 16:21:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-10-14 16:21:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-14 16:21:01,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:01,439 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:01,439 INFO L424 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:01,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:01,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1351776421, now seen corresponding path program 68 times [2018-10-14 16:21:01,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:04,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:04,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-14 16:21:04,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-14 16:21:04,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-14 16:21:04,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2488, Invalid=2624, Unknown=0, NotChecked=0, Total=5112 [2018-10-14 16:21:04,117 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 72 states. [2018-10-14 16:21:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:07,418 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-14 16:21:07,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-14 16:21:07,418 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 309 [2018-10-14 16:21:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:07,419 INFO L225 Difference]: With dead ends: 315 [2018-10-14 16:21:07,419 INFO L226 Difference]: Without dead ends: 315 [2018-10-14 16:21:07,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7384, Invalid=12076, Unknown=0, NotChecked=0, Total=19460 [2018-10-14 16:21:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-14 16:21:07,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2018-10-14 16:21:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-10-14 16:21:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-10-14 16:21:07,423 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 309 [2018-10-14 16:21:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:07,423 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-10-14 16:21:07,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-14 16:21:07,423 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-10-14 16:21:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-14 16:21:07,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:07,424 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:07,424 INFO L424 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:07,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:07,425 INFO L82 PathProgramCache]: Analyzing trace with hash 604257017, now seen corresponding path program 69 times [2018-10-14 16:21:07,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:09,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:09,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 16:21:09,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 16:21:09,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 16:21:09,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=2697, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:21:09,990 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 73 states. [2018-10-14 16:21:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:13,487 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2018-10-14 16:21:13,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-14 16:21:13,488 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 312 [2018-10-14 16:21:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:13,489 INFO L225 Difference]: With dead ends: 318 [2018-10-14 16:21:13,489 INFO L226 Difference]: Without dead ends: 318 [2018-10-14 16:21:13,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7596, Invalid=12426, Unknown=0, NotChecked=0, Total=20022 [2018-10-14 16:21:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-14 16:21:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2018-10-14 16:21:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-10-14 16:21:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-10-14 16:21:13,492 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 312 [2018-10-14 16:21:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:13,492 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-10-14 16:21:13,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 16:21:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-10-14 16:21:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-14 16:21:13,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:13,494 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:13,494 INFO L424 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:13,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:13,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1319863653, now seen corresponding path program 70 times [2018-10-14 16:21:13,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 0 proven. 7315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:15,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:15,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-14 16:21:15,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-14 16:21:15,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-14 16:21:15,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2631, Invalid=2771, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 16:21:15,884 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 74 states. [2018-10-14 16:21:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:19,574 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-14 16:21:19,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-14 16:21:19,574 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 315 [2018-10-14 16:21:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:19,575 INFO L225 Difference]: With dead ends: 321 [2018-10-14 16:21:19,575 INFO L226 Difference]: Without dead ends: 321 [2018-10-14 16:21:19,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7811, Invalid=12781, Unknown=0, NotChecked=0, Total=20592 [2018-10-14 16:21:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-10-14 16:21:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2018-10-14 16:21:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-14 16:21:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-14 16:21:19,578 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 315 [2018-10-14 16:21:19,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:19,579 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-14 16:21:19,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-14 16:21:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-14 16:21:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-14 16:21:19,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:19,580 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:19,580 INFO L424 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:19,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2129756089, now seen corresponding path program 71 times [2018-10-14 16:21:19,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 0 proven. 7526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:22,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:22,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-14 16:21:22,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-14 16:21:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-14 16:21:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2704, Invalid=2846, Unknown=0, NotChecked=0, Total=5550 [2018-10-14 16:21:22,061 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 75 states. [2018-10-14 16:21:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:25,980 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2018-10-14 16:21:25,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-14 16:21:25,980 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 318 [2018-10-14 16:21:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:25,981 INFO L225 Difference]: With dead ends: 324 [2018-10-14 16:21:25,981 INFO L226 Difference]: Without dead ends: 324 [2018-10-14 16:21:25,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8029, Invalid=13141, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:21:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-14 16:21:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2018-10-14 16:21:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-14 16:21:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-10-14 16:21:25,984 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 318 [2018-10-14 16:21:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:25,985 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-10-14 16:21:25,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-14 16:21:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-10-14 16:21:25,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-14 16:21:25,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:25,986 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:25,986 INFO L424 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:25,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:25,987 INFO L82 PathProgramCache]: Analyzing trace with hash -225968677, now seen corresponding path program 72 times [2018-10-14 16:21:25,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 0 proven. 7740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:28,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:28,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 16:21:28,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 16:21:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 16:21:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2778, Invalid=2922, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:21:28,586 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 76 states. [2018-10-14 16:21:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:32,223 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-10-14 16:21:32,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-14 16:21:32,223 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 321 [2018-10-14 16:21:32,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:32,224 INFO L225 Difference]: With dead ends: 327 [2018-10-14 16:21:32,224 INFO L226 Difference]: Without dead ends: 327 [2018-10-14 16:21:32,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8250, Invalid=13506, Unknown=0, NotChecked=0, Total=21756 [2018-10-14 16:21:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-14 16:21:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2018-10-14 16:21:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-10-14 16:21:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-10-14 16:21:32,227 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 321 [2018-10-14 16:21:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:32,228 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-10-14 16:21:32,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 16:21:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-10-14 16:21:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-10-14 16:21:32,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:32,229 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:32,229 INFO L424 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:32,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:32,229 INFO L82 PathProgramCache]: Analyzing trace with hash 143144057, now seen corresponding path program 73 times [2018-10-14 16:21:32,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 0 proven. 7957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:35,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:35,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-14 16:21:35,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-14 16:21:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-14 16:21:35,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2853, Invalid=2999, Unknown=0, NotChecked=0, Total=5852 [2018-10-14 16:21:35,100 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 77 states. [2018-10-14 16:21:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:38,779 INFO L93 Difference]: Finished difference Result 330 states and 330 transitions. [2018-10-14 16:21:38,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-14 16:21:38,780 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 324 [2018-10-14 16:21:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:38,781 INFO L225 Difference]: With dead ends: 330 [2018-10-14 16:21:38,781 INFO L226 Difference]: Without dead ends: 330 [2018-10-14 16:21:38,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8474, Invalid=13876, Unknown=0, NotChecked=0, Total=22350 [2018-10-14 16:21:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-10-14 16:21:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2018-10-14 16:21:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-10-14 16:21:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-10-14 16:21:38,785 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 324 [2018-10-14 16:21:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:38,785 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-10-14 16:21:38,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-14 16:21:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-10-14 16:21:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-14 16:21:38,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:38,786 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:38,786 INFO L424 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:38,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1264324891, now seen corresponding path program 74 times [2018-10-14 16:21:38,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 0 proven. 8177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:41,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:41,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-14 16:21:41,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-14 16:21:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-14 16:21:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=3077, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:21:41,399 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 78 states. [2018-10-14 16:21:45,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:45,387 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-14 16:21:45,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-14 16:21:45,388 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 327 [2018-10-14 16:21:45,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:45,389 INFO L225 Difference]: With dead ends: 333 [2018-10-14 16:21:45,389 INFO L226 Difference]: Without dead ends: 333 [2018-10-14 16:21:45,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8701, Invalid=14251, Unknown=0, NotChecked=0, Total=22952 [2018-10-14 16:21:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-14 16:21:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2018-10-14 16:21:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-14 16:21:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-14 16:21:45,392 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 327 [2018-10-14 16:21:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:45,393 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-14 16:21:45,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-14 16:21:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-14 16:21:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-14 16:21:45,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:45,394 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:45,394 INFO L424 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:45,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 401889593, now seen corresponding path program 75 times [2018-10-14 16:21:45,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 0 proven. 8400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:48,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:48,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-14 16:21:48,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-14 16:21:48,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-14 16:21:48,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=3156, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:21:48,033 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 79 states. [2018-10-14 16:21:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:52,129 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2018-10-14 16:21:52,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-14 16:21:52,129 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 330 [2018-10-14 16:21:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:52,130 INFO L225 Difference]: With dead ends: 336 [2018-10-14 16:21:52,131 INFO L226 Difference]: Without dead ends: 336 [2018-10-14 16:21:52,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8931, Invalid=14631, Unknown=0, NotChecked=0, Total=23562 [2018-10-14 16:21:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-10-14 16:21:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2018-10-14 16:21:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-14 16:21:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-10-14 16:21:52,134 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 330 [2018-10-14 16:21:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:52,134 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-10-14 16:21:52,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-14 16:21:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-10-14 16:21:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-14 16:21:52,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:52,136 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:52,136 INFO L424 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:52,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash 86291547, now seen corresponding path program 76 times [2018-10-14 16:21:52,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 0 proven. 8626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:55,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:55,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-10-14 16:21:55,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-14 16:21:55,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-14 16:21:55,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3084, Invalid=3236, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:21:55,094 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 80 states. [2018-10-14 16:21:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:59,268 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-10-14 16:21:59,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-14 16:21:59,268 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 333 [2018-10-14 16:21:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:59,269 INFO L225 Difference]: With dead ends: 339 [2018-10-14 16:21:59,269 INFO L226 Difference]: Without dead ends: 339 [2018-10-14 16:21:59,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9164, Invalid=15016, Unknown=0, NotChecked=0, Total=24180 [2018-10-14 16:21:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-14 16:21:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2018-10-14 16:21:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-14 16:21:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-10-14 16:21:59,273 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 333 [2018-10-14 16:21:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:59,273 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-10-14 16:21:59,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-14 16:21:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-10-14 16:21:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-14 16:21:59,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:59,275 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:59,275 INFO L424 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:59,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:59,275 INFO L82 PathProgramCache]: Analyzing trace with hash -211685895, now seen corresponding path program 77 times [2018-10-14 16:21:59,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 0 proven. 8855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:02,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:02,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-14 16:22:02,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-14 16:22:02,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-14 16:22:02,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=3317, Unknown=0, NotChecked=0, Total=6480 [2018-10-14 16:22:02,051 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 81 states. [2018-10-14 16:22:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:06,385 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2018-10-14 16:22:06,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-14 16:22:06,385 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 336 [2018-10-14 16:22:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:06,386 INFO L225 Difference]: With dead ends: 342 [2018-10-14 16:22:06,386 INFO L226 Difference]: Without dead ends: 342 [2018-10-14 16:22:06,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9400, Invalid=15406, Unknown=0, NotChecked=0, Total=24806 [2018-10-14 16:22:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-14 16:22:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2018-10-14 16:22:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-14 16:22:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-14 16:22:06,390 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 336 [2018-10-14 16:22:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:06,390 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-14 16:22:06,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-14 16:22:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-14 16:22:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-14 16:22:06,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:06,392 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:06,392 INFO L424 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:06,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash 439740315, now seen corresponding path program 78 times [2018-10-14 16:22:06,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 0 proven. 9087 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:09,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:09,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-14 16:22:09,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-14 16:22:09,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-14 16:22:09,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3243, Invalid=3399, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 16:22:09,249 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 82 states. [2018-10-14 16:22:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:13,431 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-14 16:22:13,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-14 16:22:13,431 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 339 [2018-10-14 16:22:13,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:13,432 INFO L225 Difference]: With dead ends: 345 [2018-10-14 16:22:13,432 INFO L226 Difference]: Without dead ends: 345 [2018-10-14 16:22:13,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3081 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9639, Invalid=15801, Unknown=0, NotChecked=0, Total=25440 [2018-10-14 16:22:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-10-14 16:22:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2018-10-14 16:22:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-14 16:22:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-14 16:22:13,436 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 339 [2018-10-14 16:22:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:13,436 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-14 16:22:13,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-14 16:22:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-14 16:22:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-14 16:22:13,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:13,438 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:13,438 INFO L424 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:13,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1879248199, now seen corresponding path program 79 times [2018-10-14 16:22:13,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 0 proven. 9322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:16,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:16,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-14 16:22:16,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-14 16:22:16,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-14 16:22:16,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3324, Invalid=3482, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:22:16,654 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 83 states. [2018-10-14 16:22:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:21,020 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2018-10-14 16:22:21,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-14 16:22:21,020 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 342 [2018-10-14 16:22:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:21,021 INFO L225 Difference]: With dead ends: 348 [2018-10-14 16:22:21,021 INFO L226 Difference]: Without dead ends: 348 [2018-10-14 16:22:21,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9881, Invalid=16201, Unknown=0, NotChecked=0, Total=26082 [2018-10-14 16:22:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-14 16:22:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 346. [2018-10-14 16:22:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-10-14 16:22:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-10-14 16:22:21,025 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 342 [2018-10-14 16:22:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:21,025 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-10-14 16:22:21,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-14 16:22:21,025 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-10-14 16:22:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-14 16:22:21,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:21,027 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:21,027 INFO L424 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:21,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:21,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1977854683, now seen corresponding path program 80 times [2018-10-14 16:22:21,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 0 proven. 9560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:24,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:24,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-10-14 16:22:24,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-14 16:22:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-14 16:22:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3406, Invalid=3566, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:22:24,071 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 84 states. [2018-10-14 16:22:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:28,679 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-10-14 16:22:28,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-14 16:22:28,679 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 345 [2018-10-14 16:22:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:28,680 INFO L225 Difference]: With dead ends: 351 [2018-10-14 16:22:28,681 INFO L226 Difference]: Without dead ends: 351 [2018-10-14 16:22:28,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3240 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10126, Invalid=16606, Unknown=0, NotChecked=0, Total=26732 [2018-10-14 16:22:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-14 16:22:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2018-10-14 16:22:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-10-14 16:22:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-10-14 16:22:28,684 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 345 [2018-10-14 16:22:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:28,684 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-10-14 16:22:28,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-14 16:22:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-10-14 16:22:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-14 16:22:28,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:28,686 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:28,686 INFO L424 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:28,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:28,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1374775161, now seen corresponding path program 81 times [2018-10-14 16:22:28,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:31,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:31,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-14 16:22:31,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-14 16:22:31,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-14 16:22:31,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3489, Invalid=3651, Unknown=0, NotChecked=0, Total=7140 [2018-10-14 16:22:31,929 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 85 states. [2018-10-14 16:22:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:36,326 INFO L93 Difference]: Finished difference Result 354 states and 354 transitions. [2018-10-14 16:22:36,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-14 16:22:36,326 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 348 [2018-10-14 16:22:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:36,328 INFO L225 Difference]: With dead ends: 354 [2018-10-14 16:22:36,328 INFO L226 Difference]: Without dead ends: 354 [2018-10-14 16:22:36,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=10374, Invalid=17016, Unknown=0, NotChecked=0, Total=27390 [2018-10-14 16:22:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-14 16:22:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2018-10-14 16:22:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-10-14 16:22:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-10-14 16:22:36,332 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 348 [2018-10-14 16:22:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:36,332 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-10-14 16:22:36,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-14 16:22:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-10-14 16:22:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-10-14 16:22:36,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:36,334 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:36,334 INFO L424 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:36,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:36,334 INFO L82 PathProgramCache]: Analyzing trace with hash 880934427, now seen corresponding path program 82 times [2018-10-14 16:22:36,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10045 backedges. 0 proven. 10045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:39,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:39,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-10-14 16:22:39,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-14 16:22:39,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-14 16:22:39,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3573, Invalid=3737, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:22:39,498 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 86 states. [2018-10-14 16:22:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:44,170 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-14 16:22:44,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-14 16:22:44,170 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 351 [2018-10-14 16:22:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:44,171 INFO L225 Difference]: With dead ends: 357 [2018-10-14 16:22:44,171 INFO L226 Difference]: Without dead ends: 357 [2018-10-14 16:22:44,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3403 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=10625, Invalid=17431, Unknown=0, NotChecked=0, Total=28056 [2018-10-14 16:22:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-10-14 16:22:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 355. [2018-10-14 16:22:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-14 16:22:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-14 16:22:44,176 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 351 [2018-10-14 16:22:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:44,176 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-14 16:22:44,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-14 16:22:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-14 16:22:44,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-14 16:22:44,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:44,177 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:44,178 INFO L424 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:44,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:44,178 INFO L82 PathProgramCache]: Analyzing trace with hash -865383367, now seen corresponding path program 83 times [2018-10-14 16:22:44,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 0 proven. 10292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:47,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:47,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-14 16:22:47,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-14 16:22:47,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-14 16:22:47,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3658, Invalid=3824, Unknown=0, NotChecked=0, Total=7482 [2018-10-14 16:22:47,705 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 87 states. [2018-10-14 16:22:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:52,434 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2018-10-14 16:22:52,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-14 16:22:52,434 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 354 [2018-10-14 16:22:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:52,435 INFO L225 Difference]: With dead ends: 360 [2018-10-14 16:22:52,435 INFO L226 Difference]: Without dead ends: 360 [2018-10-14 16:22:52,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=10879, Invalid=17851, Unknown=0, NotChecked=0, Total=28730 [2018-10-14 16:22:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-10-14 16:22:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2018-10-14 16:22:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-14 16:22:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-10-14 16:22:52,439 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 354 [2018-10-14 16:22:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:52,440 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-10-14 16:22:52,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-14 16:22:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-10-14 16:22:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-14 16:22:52,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:52,441 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:52,441 INFO L424 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:52,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash -479927973, now seen corresponding path program 84 times [2018-10-14 16:22:52,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 0 proven. 10542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:56,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:56,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-14 16:22:56,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-14 16:22:56,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-14 16:22:56,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3744, Invalid=3912, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:22:56,008 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 88 states. [2018-10-14 16:23:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:00,999 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-10-14 16:23:01,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-14 16:23:01,000 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 357 [2018-10-14 16:23:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:01,001 INFO L225 Difference]: With dead ends: 363 [2018-10-14 16:23:01,001 INFO L226 Difference]: Without dead ends: 363 [2018-10-14 16:23:01,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=11136, Invalid=18276, Unknown=0, NotChecked=0, Total=29412 [2018-10-14 16:23:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-14 16:23:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 361. [2018-10-14 16:23:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-14 16:23:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-10-14 16:23:01,005 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 357 [2018-10-14 16:23:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:01,006 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-10-14 16:23:01,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-14 16:23:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-10-14 16:23:01,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-14 16:23:01,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:01,008 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:01,008 INFO L424 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:01,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2120834823, now seen corresponding path program 85 times [2018-10-14 16:23:01,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10795 backedges. 0 proven. 10795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:04,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:04,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-10-14 16:23:04,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-14 16:23:04,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-14 16:23:04,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3831, Invalid=4001, Unknown=0, NotChecked=0, Total=7832 [2018-10-14 16:23:04,432 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 89 states. [2018-10-14 16:23:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:09,421 INFO L93 Difference]: Finished difference Result 366 states and 366 transitions. [2018-10-14 16:23:09,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-14 16:23:09,421 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 360 [2018-10-14 16:23:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:09,423 INFO L225 Difference]: With dead ends: 366 [2018-10-14 16:23:09,423 INFO L226 Difference]: Without dead ends: 366 [2018-10-14 16:23:09,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=11396, Invalid=18706, Unknown=0, NotChecked=0, Total=30102 [2018-10-14 16:23:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-10-14 16:23:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2018-10-14 16:23:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-10-14 16:23:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-10-14 16:23:09,427 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 360 [2018-10-14 16:23:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:09,428 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-10-14 16:23:09,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-14 16:23:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-10-14 16:23:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-14 16:23:09,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:09,430 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:09,430 INFO L424 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:09,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1059040101, now seen corresponding path program 86 times [2018-10-14 16:23:09,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 0 proven. 11051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:13,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:13,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-10-14 16:23:13,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-14 16:23:13,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-14 16:23:13,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3919, Invalid=4091, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:23:13,051 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 90 states. [2018-10-14 16:23:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:18,044 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-14 16:23:18,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-14 16:23:18,045 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 363 [2018-10-14 16:23:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:18,046 INFO L225 Difference]: With dead ends: 369 [2018-10-14 16:23:18,046 INFO L226 Difference]: Without dead ends: 369 [2018-10-14 16:23:18,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=11659, Invalid=19141, Unknown=0, NotChecked=0, Total=30800 [2018-10-14 16:23:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-10-14 16:23:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2018-10-14 16:23:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-14 16:23:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-14 16:23:18,050 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 363 [2018-10-14 16:23:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:18,050 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-14 16:23:18,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-14 16:23:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-14 16:23:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-14 16:23:18,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:18,051 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:18,052 INFO L424 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:18,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:18,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1566612039, now seen corresponding path program 87 times [2018-10-14 16:23:18,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 0 proven. 11310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:21,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:21,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-14 16:23:21,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-14 16:23:21,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-14 16:23:21,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=4182, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:23:21,781 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 91 states. [2018-10-14 16:23:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:27,108 INFO L93 Difference]: Finished difference Result 372 states and 372 transitions. [2018-10-14 16:23:27,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-14 16:23:27,108 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 366 [2018-10-14 16:23:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:27,110 INFO L225 Difference]: With dead ends: 372 [2018-10-14 16:23:27,110 INFO L226 Difference]: Without dead ends: 372 [2018-10-14 16:23:27,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=11925, Invalid=19581, Unknown=0, NotChecked=0, Total=31506 [2018-10-14 16:23:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-10-14 16:23:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 370. [2018-10-14 16:23:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-10-14 16:23:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-10-14 16:23:27,114 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 366 [2018-10-14 16:23:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:27,114 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-10-14 16:23:27,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-14 16:23:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-10-14 16:23:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-10-14 16:23:27,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:27,116 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:27,116 INFO L424 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:27,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:27,116 INFO L82 PathProgramCache]: Analyzing trace with hash -62367781, now seen corresponding path program 88 times [2018-10-14 16:23:27,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11572 backedges. 0 proven. 11572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:30,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:30,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-10-14 16:23:30,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-14 16:23:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-14 16:23:30,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4098, Invalid=4274, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:23:30,639 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 92 states. [2018-10-14 16:23:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:36,033 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-10-14 16:23:36,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-14 16:23:36,034 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 369 [2018-10-14 16:23:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:36,035 INFO L225 Difference]: With dead ends: 375 [2018-10-14 16:23:36,035 INFO L226 Difference]: Without dead ends: 375 [2018-10-14 16:23:36,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=12194, Invalid=20026, Unknown=0, NotChecked=0, Total=32220 [2018-10-14 16:23:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-14 16:23:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2018-10-14 16:23:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-10-14 16:23:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-10-14 16:23:36,041 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 369 [2018-10-14 16:23:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:36,041 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-10-14 16:23:36,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-14 16:23:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-10-14 16:23:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-10-14 16:23:36,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:36,043 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:36,043 INFO L424 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:36,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:36,043 INFO L82 PathProgramCache]: Analyzing trace with hash -810444167, now seen corresponding path program 89 times [2018-10-14 16:23:36,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11837 backedges. 0 proven. 11837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:39,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:39,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-14 16:23:39,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-14 16:23:39,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-14 16:23:39,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4189, Invalid=4367, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:23:39,993 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 93 states. [2018-10-14 16:23:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:45,563 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2018-10-14 16:23:45,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-14 16:23:45,563 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 372 [2018-10-14 16:23:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:45,564 INFO L225 Difference]: With dead ends: 378 [2018-10-14 16:23:45,564 INFO L226 Difference]: Without dead ends: 378 [2018-10-14 16:23:45,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=12466, Invalid=20476, Unknown=0, NotChecked=0, Total=32942 [2018-10-14 16:23:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-10-14 16:23:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2018-10-14 16:23:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-10-14 16:23:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-10-14 16:23:45,568 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 372 [2018-10-14 16:23:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:45,569 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-10-14 16:23:45,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-14 16:23:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-10-14 16:23:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-14 16:23:45,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:45,570 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:45,570 INFO L424 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:45,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:45,571 INFO L82 PathProgramCache]: Analyzing trace with hash -168760549, now seen corresponding path program 90 times [2018-10-14 16:23:45,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 0 proven. 12105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:49,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:49,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-10-14 16:23:49,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-14 16:23:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-14 16:23:49,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4281, Invalid=4461, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:23:49,609 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 94 states. [2018-10-14 16:23:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:55,288 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-14 16:23:55,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:23:55,289 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 375 [2018-10-14 16:23:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:55,290 INFO L225 Difference]: With dead ends: 381 [2018-10-14 16:23:55,290 INFO L226 Difference]: Without dead ends: 381 [2018-10-14 16:23:55,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=12741, Invalid=20931, Unknown=0, NotChecked=0, Total=33672 [2018-10-14 16:23:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-14 16:23:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2018-10-14 16:23:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-14 16:23:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-14 16:23:55,294 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 375 [2018-10-14 16:23:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:55,294 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-14 16:23:55,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-14 16:23:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-14 16:23:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-14 16:23:55,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:55,296 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:55,296 INFO L424 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:55,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash -671531207, now seen corresponding path program 91 times [2018-10-14 16:23:55,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 0 proven. 12376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:59,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:59,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-10-14 16:23:59,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-14 16:23:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-14 16:23:59,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4374, Invalid=4556, Unknown=0, NotChecked=0, Total=8930 [2018-10-14 16:23:59,298 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 95 states. [2018-10-14 16:24:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:05,082 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-14 16:24:05,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-14 16:24:05,083 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 378 [2018-10-14 16:24:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:05,084 INFO L225 Difference]: With dead ends: 384 [2018-10-14 16:24:05,084 INFO L226 Difference]: Without dead ends: 384 [2018-10-14 16:24:05,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4186 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=13019, Invalid=21391, Unknown=0, NotChecked=0, Total=34410 [2018-10-14 16:24:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-14 16:24:05,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-10-14 16:24:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-14 16:24:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-10-14 16:24:05,088 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 378 [2018-10-14 16:24:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:05,088 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-10-14 16:24:05,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-14 16:24:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-10-14 16:24:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-10-14 16:24:05,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:05,090 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:05,090 INFO L424 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:05,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2133724763, now seen corresponding path program 92 times [2018-10-14 16:24:05,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 0 proven. 12650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:24:09,268 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:24:09,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-10-14 16:24:09,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-14 16:24:09,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-14 16:24:09,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4468, Invalid=4652, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:24:09,269 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 96 states. [2018-10-14 16:24:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:15,145 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-10-14 16:24:15,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-14 16:24:15,146 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 381 [2018-10-14 16:24:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:15,147 INFO L225 Difference]: With dead ends: 387 [2018-10-14 16:24:15,147 INFO L226 Difference]: Without dead ends: 387 [2018-10-14 16:24:15,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4278 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=13300, Invalid=21856, Unknown=0, NotChecked=0, Total=35156 [2018-10-14 16:24:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-14 16:24:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2018-10-14 16:24:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-10-14 16:24:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-10-14 16:24:15,152 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 381 [2018-10-14 16:24:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:15,152 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-10-14 16:24:15,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-14 16:24:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-10-14 16:24:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-10-14 16:24:15,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:15,153 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:15,154 INFO L424 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:15,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:15,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2040681465, now seen corresponding path program 93 times [2018-10-14 16:24:15,154 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 0 proven. 12927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:24:19,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:24:19,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-10-14 16:24:19,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-14 16:24:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-14 16:24:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4563, Invalid=4749, Unknown=0, NotChecked=0, Total=9312 [2018-10-14 16:24:19,437 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 97 states. [2018-10-14 16:24:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:25,552 INFO L93 Difference]: Finished difference Result 388 states and 388 transitions. [2018-10-14 16:24:25,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-14 16:24:25,552 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 384 [2018-10-14 16:24:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:25,553 INFO L225 Difference]: With dead ends: 388 [2018-10-14 16:24:25,554 INFO L226 Difference]: Without dead ends: 388 [2018-10-14 16:24:25,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=13584, Invalid=22326, Unknown=0, NotChecked=0, Total=35910 [2018-10-14 16:24:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-14 16:24:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-10-14 16:24:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-10-14 16:24:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-10-14 16:24:25,558 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 384 [2018-10-14 16:24:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:25,558 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-10-14 16:24:25,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-14 16:24:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-10-14 16:24:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-14 16:24:25,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:25,560 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:25,560 INFO L424 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:25,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash 441696667, now seen corresponding path program 94 times [2018-10-14 16:24:25,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13207 trivial. 0 not checked. [2018-10-14 16:24:27,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:24:27,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-10-14 16:24:27,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:24:27,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:24:27,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:24:27,810 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 19 states. [2018-10-14 16:24:29,263 WARN L179 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-10-14 16:24:30,957 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-10-14 16:24:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:31,583 INFO L93 Difference]: Finished difference Result 386 states and 386 transitions. [2018-10-14 16:24:31,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-14 16:24:31,584 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 387 [2018-10-14 16:24:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:31,585 INFO L225 Difference]: With dead ends: 386 [2018-10-14 16:24:31,585 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:24:31,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:24:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:24:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:24:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:24:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:24:31,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 387 [2018-10-14 16:24:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:31,586 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:24:31,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:24:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:24:31,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:24:31,592 INFO L202 PluginConnector]: Adding new model 20051113-1.c_false-valid-memtrack.i_22.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:24:31 BoogieIcfgContainer [2018-10-14 16:24:31,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:24:31,593 INFO L168 Benchmark]: Toolchain (without parser) took 378754.72 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 4.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.4 MB). Peak memory consumption was 134.2 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:31,594 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:24:31,594 INFO L168 Benchmark]: Boogie Preprocessor took 64.96 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:24:31,595 INFO L168 Benchmark]: RCFGBuilder took 911.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:31,595 INFO L168 Benchmark]: TraceAbstraction took 377772.61 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 4.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.7 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:31,598 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.96 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 911.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 377772.61 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 4.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.7 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 178]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 1 error locations. SAFE Result, 377.7s OverallTime, 95 OverallIterations, 94 TraceHistogramMax, 217.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9628 SDtfs, 26404 SDslu, 316835 SDs, 0 SdLazy, 30565 SolverSat, 4694 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9170 GetRequests, 190 SyntacticMatches, 16 SemanticMatches, 8964 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138528 ImplicationChecksByTransitivity, 322.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 95 MinimizatonAttempts, 186 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 151.1s InterpolantComputationTime, 23370 NumberOfCodeBlocks, 23370 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 23275 ConstructedInterpolants, 0 QuantifiedInterpolants, 23648133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 95 InterpolantComputations, 2 PerfectInterpolantSequences, 13207/419710 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/20051113-1.c_false-valid-memtrack.i_22.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-24-31-606.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/20051113-1.c_false-valid-memtrack.i_22.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-24-31-606.csv Received shutdown request...