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/dll_extends_pointer_true-valid-memsafety.i_36.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:34:46,416 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:34:46,418 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:34:46,429 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:34:46,430 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:34:46,431 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:34:46,432 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:34:46,434 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:34:46,436 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:34:46,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:34:46,437 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:34:46,438 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:34:46,439 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:34:46,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:34:46,441 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:34:46,441 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:34:46,442 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:34:46,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:34:46,446 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:34:46,448 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:34:46,449 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:34:46,450 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:34:46,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:34:46,453 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:34:46,454 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:34:46,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:34:46,456 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:34:46,456 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:34:46,457 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:34:46,458 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:34:46,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:34:46,460 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-10 15:34:46,463 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:34:46,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:34:46,473 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:34:46,474 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:34:46,474 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:34:46,474 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:34:46,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:34:46,475 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:34:46,475 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:34:46,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:34:46,476 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:34:46,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:34:46,476 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:34:46,477 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:34:46,477 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:34:46,478 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:34:46,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:34:46,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:34:46,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:34:46,570 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:34:46,570 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:34:46,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_36.bpl [2018-10-10 15:34:46,571 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_36.bpl' [2018-10-10 15:34:46,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:34:46,664 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:34:46,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:34:46,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:34:46,667 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:34:46,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... [2018-10-10 15:34:46,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:34:46,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:34:46,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:34:46,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:34:46,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:34:46,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:34:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:34:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:34:47,868 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:34:47,869 INFO L202 PluginConnector]: Adding new model dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:34:47 BoogieIcfgContainer [2018-10-10 15:34:47,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:34:47,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:34:47,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:34:47,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:34:47,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:34:46" (1/2) ... [2018-10-10 15:34:47,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729f26db and model type dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:34:47, skipping insertion in model container [2018-10-10 15:34:47,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dll_extends_pointer_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:34:47" (2/2) ... [2018-10-10 15:34:47,877 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_extends_pointer_true-valid-memsafety.i_36.bpl [2018-10-10 15:34:47,887 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:34:47,895 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:34:47,913 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:34:47,949 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:34:47,949 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:34:47,950 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:34:47,950 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:34:47,950 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:34:47,950 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:34:47,950 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:34:47,951 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:34:47,952 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:34:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-10-10 15:34:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-10 15:34:48,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:48,001 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] [2018-10-10 15:34:48,002 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:48,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:48,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1834122223, now seen corresponding path program 1 times [2018-10-10 15:34:48,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:48,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:34:48,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:34:48,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:34:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:34:48,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:34:48,790 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 9 states. [2018-10-10 15:34:49,231 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-10 15:34:49,765 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-10 15:34:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:50,125 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-10-10 15:34:50,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:34:50,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2018-10-10 15:34:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:50,156 INFO L225 Difference]: With dead ends: 195 [2018-10-10 15:34:50,156 INFO L226 Difference]: Without dead ends: 195 [2018-10-10 15:34:50,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:34:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-10 15:34:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2018-10-10 15:34:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-10 15:34:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2018-10-10 15:34:50,239 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 62 [2018-10-10 15:34:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:50,240 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2018-10-10 15:34:50,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:34:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2018-10-10 15:34:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-10 15:34:50,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:50,245 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:34:50,246 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:50,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:50,246 INFO L82 PathProgramCache]: Analyzing trace with hash 134671679, now seen corresponding path program 1 times [2018-10-10 15:34:50,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:50,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:50,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-10 15:34:50,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-10 15:34:50,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-10 15:34:50,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:34:50,938 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 14 states. [2018-10-10 15:34:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:52,155 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2018-10-10 15:34:52,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-10 15:34:52,156 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2018-10-10 15:34:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:52,159 INFO L225 Difference]: With dead ends: 179 [2018-10-10 15:34:52,159 INFO L226 Difference]: Without dead ends: 149 [2018-10-10 15:34:52,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=229, Invalid=893, Unknown=0, NotChecked=0, Total=1122 [2018-10-10 15:34:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-10 15:34:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 128. [2018-10-10 15:34:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-10 15:34:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2018-10-10 15:34:52,172 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 90 [2018-10-10 15:34:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:52,173 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2018-10-10 15:34:52,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-10 15:34:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2018-10-10 15:34:52,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-10 15:34:52,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:52,178 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:34:52,178 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:52,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:52,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1709637199, now seen corresponding path program 1 times [2018-10-10 15:34:52,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:52,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:34:52,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 15:34:52,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:34:52,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:34:52,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:34:52,587 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 12 states. [2018-10-10 15:34:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:53,857 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2018-10-10 15:34:53,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 15:34:53,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2018-10-10 15:34:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:53,862 INFO L225 Difference]: With dead ends: 171 [2018-10-10 15:34:53,862 INFO L226 Difference]: Without dead ends: 171 [2018-10-10 15:34:53,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:34:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-10 15:34:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 143. [2018-10-10 15:34:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-10 15:34:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-10-10 15:34:53,873 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 114 [2018-10-10 15:34:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:53,873 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-10-10 15:34:53,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:34:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-10-10 15:34:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-10 15:34:53,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:53,877 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:34:53,877 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:53,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:53,878 INFO L82 PathProgramCache]: Analyzing trace with hash -445400353, now seen corresponding path program 1 times [2018-10-10 15:34:53,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:54,908 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2018-10-10 15:34:56,208 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-10-10 15:34:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:57,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:57,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-10 15:34:57,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-10 15:34:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-10 15:34:57,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1170, Unknown=0, NotChecked=0, Total=1260 [2018-10-10 15:34:57,038 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 36 states. [2018-10-10 15:34:59,134 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-10 15:34:59,457 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:34:59,632 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-10 15:34:59,804 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-10 15:35:00,001 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-10-10 15:35:00,175 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-10-10 15:35:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:03,182 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-10-10 15:35:03,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-10 15:35:03,182 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 142 [2018-10-10 15:35:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:03,186 INFO L225 Difference]: With dead ends: 260 [2018-10-10 15:35:03,186 INFO L226 Difference]: Without dead ends: 260 [2018-10-10 15:35:03,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=700, Invalid=5780, Unknown=0, NotChecked=0, Total=6480 [2018-10-10 15:35:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-10 15:35:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2018-10-10 15:35:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-10 15:35:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2018-10-10 15:35:03,202 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 142 [2018-10-10 15:35:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:03,203 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2018-10-10 15:35:03,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-10 15:35:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2018-10-10 15:35:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-10 15:35:03,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:03,207 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:35:03,207 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:03,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash 776602381, now seen corresponding path program 2 times [2018-10-10 15:35:03,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:03,691 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:35:03,916 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:35:04,215 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-10-10 15:35:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:06,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:06,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-10 15:35:06,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-10 15:35:06,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-10 15:35:06,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2289, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 15:35:06,651 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 50 states. [2018-10-10 15:35:07,253 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-10 15:35:10,459 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-10 15:35:10,636 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-10 15:35:11,866 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-10 15:35:12,048 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2018-10-10 15:35:12,532 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2018-10-10 15:35:12,746 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-10 15:35:16,556 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-10 15:35:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:17,537 INFO L93 Difference]: Finished difference Result 280 states and 281 transitions. [2018-10-10 15:35:17,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-10 15:35:17,538 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 170 [2018-10-10 15:35:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:17,540 INFO L225 Difference]: With dead ends: 280 [2018-10-10 15:35:17,540 INFO L226 Difference]: Without dead ends: 219 [2018-10-10 15:35:17,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2985 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1235, Invalid=11421, Unknown=0, NotChecked=0, Total=12656 [2018-10-10 15:35:17,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-10 15:35:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2018-10-10 15:35:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-10 15:35:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-10-10 15:35:17,552 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 170 [2018-10-10 15:35:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:17,553 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-10-10 15:35:17,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-10 15:35:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-10-10 15:35:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-10 15:35:17,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:17,556 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:35:17,557 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:17,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1773336703, now seen corresponding path program 3 times [2018-10-10 15:35:17,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 47 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:19,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:19,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-10 15:35:19,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-10 15:35:19,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-10 15:35:19,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2018-10-10 15:35:19,618 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 37 states. [2018-10-10 15:35:23,124 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-10-10 15:35:23,340 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-10 15:35:24,400 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:35:25,305 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2018-10-10 15:35:25,476 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-10 15:35:25,640 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-10 15:35:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:27,191 INFO L93 Difference]: Finished difference Result 244 states and 245 transitions. [2018-10-10 15:35:27,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-10 15:35:27,192 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 194 [2018-10-10 15:35:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:27,194 INFO L225 Difference]: With dead ends: 244 [2018-10-10 15:35:27,195 INFO L226 Difference]: Without dead ends: 244 [2018-10-10 15:35:27,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1149, Invalid=6507, Unknown=0, NotChecked=0, Total=7656 [2018-10-10 15:35:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-10 15:35:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 223. [2018-10-10 15:35:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-10 15:35:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-10-10 15:35:27,205 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 194 [2018-10-10 15:35:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:27,205 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-10-10 15:35:27,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-10 15:35:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-10-10 15:35:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-10 15:35:27,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:27,211 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:35:27,211 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:27,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash -915763027, now seen corresponding path program 4 times [2018-10-10 15:35:27,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:32,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:32,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-10 15:35:32,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-10 15:35:32,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-10 15:35:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3990, Unknown=0, NotChecked=0, Total=4160 [2018-10-10 15:35:32,138 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 65 states. [2018-10-10 15:35:35,372 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:35:35,597 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2018-10-10 15:35:35,809 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-10 15:35:36,028 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2018-10-10 15:35:36,575 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-10 15:35:37,986 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-10 15:35:40,289 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-10 15:35:40,822 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:35:41,192 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:35:41,426 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-10 15:35:41,915 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:35:42,142 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-10 15:35:42,397 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2018-10-10 15:35:42,590 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-10 15:35:43,329 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:35:43,623 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-10-10 15:35:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:48,495 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-10-10 15:35:48,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-10 15:35:48,495 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 222 [2018-10-10 15:35:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:48,499 INFO L225 Difference]: With dead ends: 368 [2018-10-10 15:35:48,499 INFO L226 Difference]: Without dead ends: 368 [2018-10-10 15:35:48,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4362 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1224, Invalid=19082, Unknown=0, NotChecked=0, Total=20306 [2018-10-10 15:35:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-10-10 15:35:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 304. [2018-10-10 15:35:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-10 15:35:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 306 transitions. [2018-10-10 15:35:48,514 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 306 transitions. Word has length 222 [2018-10-10 15:35:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:48,515 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 306 transitions. [2018-10-10 15:35:48,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-10 15:35:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 306 transitions. [2018-10-10 15:35:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-10 15:35:48,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:48,526 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:35:48,526 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:48,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:48,527 INFO L82 PathProgramCache]: Analyzing trace with hash -592889893, now seen corresponding path program 5 times [2018-10-10 15:35:48,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:54,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:54,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-10 15:35:54,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-10 15:35:54,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-10 15:35:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=4112, Unknown=0, NotChecked=0, Total=4290 [2018-10-10 15:35:54,291 INFO L87 Difference]: Start difference. First operand 304 states and 306 transitions. Second operand 66 states. [2018-10-10 15:35:58,826 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-10 15:36:00,727 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2018-10-10 15:36:01,338 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-10 15:36:01,622 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-10 15:36:01,848 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:36:02,325 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-10 15:36:02,662 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:36:02,878 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-10 15:36:03,323 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-10 15:36:03,653 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2018-10-10 15:36:04,076 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2018-10-10 15:36:04,448 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2018-10-10 15:36:04,903 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 93 [2018-10-10 15:36:05,391 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 95 [2018-10-10 15:36:05,761 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-10 15:36:06,145 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2018-10-10 15:36:06,511 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2018-10-10 15:36:06,907 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 114 [2018-10-10 15:36:07,499 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 121 [2018-10-10 15:36:07,914 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-10 15:36:08,436 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 107 [2018-10-10 15:36:09,008 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 115 [2018-10-10 15:36:09,590 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 110 [2018-10-10 15:36:10,155 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-10-10 15:36:10,581 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-10-10 15:36:10,917 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-10 15:36:11,248 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2018-10-10 15:36:11,600 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2018-10-10 15:36:12,226 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-10 15:36:12,543 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2018-10-10 15:36:13,254 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2018-10-10 15:36:13,990 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:36:14,279 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 15:36:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:19,266 INFO L93 Difference]: Finished difference Result 396 states and 398 transitions. [2018-10-10 15:36:19,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-10 15:36:19,266 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 250 [2018-10-10 15:36:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:19,268 INFO L225 Difference]: With dead ends: 396 [2018-10-10 15:36:19,268 INFO L226 Difference]: Without dead ends: 396 [2018-10-10 15:36:19,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=1221, Invalid=22649, Unknown=0, NotChecked=0, Total=23870 [2018-10-10 15:36:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-10-10 15:36:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 332. [2018-10-10 15:36:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-10-10 15:36:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 334 transitions. [2018-10-10 15:36:19,282 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 334 transitions. Word has length 250 [2018-10-10 15:36:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:19,282 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 334 transitions. [2018-10-10 15:36:19,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-10 15:36:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 334 transitions. [2018-10-10 15:36:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-10 15:36:19,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:19,287 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:36:19,287 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:19,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1392669107, now seen corresponding path program 6 times [2018-10-10 15:36:19,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:20,054 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-10 15:36:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 92 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:36:24,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:36:24,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-10 15:36:24,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-10 15:36:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-10 15:36:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3830, Unknown=0, NotChecked=0, Total=4032 [2018-10-10 15:36:24,071 INFO L87 Difference]: Start difference. First operand 332 states and 334 transitions. Second operand 64 states. [2018-10-10 15:36:29,226 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:36:29,704 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-10 15:36:30,145 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2018-10-10 15:36:31,303 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2018-10-10 15:36:31,711 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2018-10-10 15:36:32,145 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-10 15:36:32,528 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:36:32,730 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-10 15:36:32,965 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-10 15:36:33,216 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-10 15:36:34,127 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2018-10-10 15:36:34,414 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2018-10-10 15:36:34,763 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2018-10-10 15:36:35,071 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2018-10-10 15:36:35,510 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-10 15:36:36,287 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2018-10-10 15:36:36,584 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2018-10-10 15:36:36,915 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2018-10-10 15:36:38,352 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:36:38,720 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2018-10-10 15:36:39,088 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2018-10-10 15:36:39,365 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-10 15:36:39,647 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-10 15:36:40,010 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2018-10-10 15:36:40,384 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2018-10-10 15:36:40,885 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2018-10-10 15:36:41,134 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2018-10-10 15:36:41,735 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 96 [2018-10-10 15:36:42,183 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 112 [2018-10-10 15:36:42,642 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 120 [2018-10-10 15:36:43,004 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2018-10-10 15:36:43,377 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2018-10-10 15:36:43,827 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2018-10-10 15:36:44,403 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-10 15:36:45,274 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2018-10-10 15:36:45,452 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2018-10-10 15:36:45,614 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-10 15:36:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:46,044 INFO L93 Difference]: Finished difference Result 424 states and 426 transitions. [2018-10-10 15:36:46,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-10 15:36:46,047 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 274 [2018-10-10 15:36:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:46,050 INFO L225 Difference]: With dead ends: 424 [2018-10-10 15:36:46,050 INFO L226 Difference]: Without dead ends: 424 [2018-10-10 15:36:46,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6512 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=2841, Invalid=24219, Unknown=0, NotChecked=0, Total=27060 [2018-10-10 15:36:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-10-10 15:36:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 332. [2018-10-10 15:36:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-10-10 15:36:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 334 transitions. [2018-10-10 15:36:46,061 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 334 transitions. Word has length 274 [2018-10-10 15:36:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:46,061 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 334 transitions. [2018-10-10 15:36:46,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-10 15:36:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 334 transitions. [2018-10-10 15:36:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-10 15:36:46,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:46,064 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:36:46,064 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:46,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:46,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1364356617, now seen corresponding path program 7 times [2018-10-10 15:36:46,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:36:51,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:36:51,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-10 15:36:51,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-10 15:36:51,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-10 15:36:51,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4630, Unknown=0, NotChecked=0, Total=4830 [2018-10-10 15:36:51,981 INFO L87 Difference]: Start difference. First operand 332 states and 334 transitions. Second operand 70 states. [2018-10-10 15:36:55,307 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:36:55,976 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-10 15:36:57,952 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-10 15:36:58,511 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:36:58,747 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:36:58,948 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:36:59,134 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-10 15:36:59,543 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-10-10 15:36:59,764 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-10 15:36:59,957 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2018-10-10 15:37:00,270 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-10 15:37:00,614 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-10 15:37:01,284 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2018-10-10 15:37:01,667 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-10 15:37:01,986 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2018-10-10 15:37:02,231 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-10-10 15:37:02,511 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2018-10-10 15:37:03,218 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 94 [2018-10-10 15:37:03,490 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 89 [2018-10-10 15:37:04,249 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-10 15:37:04,561 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-10-10 15:37:04,890 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2018-10-10 15:37:05,244 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2018-10-10 15:37:05,624 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2018-10-10 15:37:05,919 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2018-10-10 15:37:06,239 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-10 15:37:06,651 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 105 [2018-10-10 15:37:07,302 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2018-10-10 15:37:08,139 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 15:37:08,425 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:37:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:37:14,294 INFO L93 Difference]: Finished difference Result 459 states and 461 transitions. [2018-10-10 15:37:14,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-10 15:37:14,295 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 278 [2018-10-10 15:37:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:37:14,298 INFO L225 Difference]: With dead ends: 459 [2018-10-10 15:37:14,298 INFO L226 Difference]: Without dead ends: 459 [2018-10-10 15:37:14,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6672 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=1242, Invalid=25164, Unknown=0, NotChecked=0, Total=26406 [2018-10-10 15:37:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-10-10 15:37:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 360. [2018-10-10 15:37:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-10-10 15:37:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 362 transitions. [2018-10-10 15:37:14,307 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 362 transitions. Word has length 278 [2018-10-10 15:37:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:37:14,307 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 362 transitions. [2018-10-10 15:37:14,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-10 15:37:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 362 transitions. [2018-10-10 15:37:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-10 15:37:14,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:37:14,310 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:37:14,310 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:37:14,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:37:14,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1476232571, now seen corresponding path program 8 times [2018-10-10 15:37:14,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:37:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:37:15,579 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-10 15:37:21,490 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 15:37:21,978 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-10-10 15:37:24,450 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-10 15:37:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 5 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:37:28,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:37:28,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-10-10 15:37:28,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-10 15:37:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-10 15:37:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=8622, Unknown=0, NotChecked=0, Total=8930 [2018-10-10 15:37:28,313 INFO L87 Difference]: Start difference. First operand 360 states and 362 transitions. Second operand 95 states. [2018-10-10 15:37:31,063 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2018-10-10 15:37:31,396 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:37:33,130 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:37:33,771 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-10-10 15:37:34,130 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-10 15:37:34,460 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2018-10-10 15:37:34,823 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-10-10 15:37:35,327 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-10 15:37:35,801 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-10-10 15:37:36,103 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:37:36,403 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:37:37,636 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:37:37,940 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-10 15:37:39,110 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-10 15:37:39,408 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2018-10-10 15:37:40,176 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-10 15:37:40,405 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-10 15:37:40,850 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-10 15:37:41,272 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-10-10 15:37:41,672 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-10 15:37:42,030 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 15:37:42,452 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2018-10-10 15:37:43,026 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-10 15:37:43,452 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2018-10-10 15:37:43,923 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2018-10-10 15:37:44,378 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 92 [2018-10-10 15:37:44,861 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 94 [2018-10-10 15:37:45,431 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-10 15:37:46,074 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2018-10-10 15:37:46,578 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 101 [2018-10-10 15:37:47,041 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 92 [2018-10-10 15:37:48,288 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-10 15:37:48,733 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2018-10-10 15:37:49,207 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2018-10-10 15:37:49,989 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-10 15:37:50,311 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2018-10-10 15:37:50,783 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2018-10-10 15:37:51,263 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2018-10-10 15:37:51,657 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2018-10-10 15:37:52,364 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-10-10 15:37:52,811 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2018-10-10 15:37:53,161 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2018-10-10 15:37:53,647 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2018-10-10 15:37:54,129 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-10 15:37:54,639 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 107 [2018-10-10 15:37:55,144 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 91 [2018-10-10 15:37:55,667 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 115 [2018-10-10 15:37:56,087 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-10 15:37:56,462 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2018-10-10 15:37:57,016 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2018-10-10 15:37:57,435 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2018-10-10 15:37:58,043 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 108 [2018-10-10 15:37:58,865 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-10-10 15:37:59,306 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2018-10-10 15:38:00,034 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 112 [2018-10-10 15:38:00,760 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 120 [2018-10-10 15:38:01,503 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 117 [2018-10-10 15:38:02,287 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 120 [2018-10-10 15:38:03,187 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2018-10-10 15:38:03,440 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-10-10 15:38:04,826 WARN L178 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 129 [2018-10-10 15:38:05,622 WARN L178 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 135 [2018-10-10 15:38:06,420 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 125 [2018-10-10 15:38:06,765 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-10 15:38:07,234 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2018-10-10 15:38:07,638 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2018-10-10 15:38:08,645 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2018-10-10 15:38:09,546 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 127 [2018-10-10 15:38:10,629 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 153 [2018-10-10 15:38:11,767 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 155 [2018-10-10 15:38:12,512 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2018-10-10 15:38:13,096 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 109 [2018-10-10 15:38:13,720 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 109 [2018-10-10 15:38:14,683 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 123 [2018-10-10 15:38:15,670 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 126 [2018-10-10 15:38:16,497 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 120 [2018-10-10 15:38:18,227 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 145 [2018-10-10 15:38:19,491 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 170 [2018-10-10 15:38:20,787 WARN L178 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 187 [2018-10-10 15:38:21,786 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 162 [2018-10-10 15:38:22,660 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 157 [2018-10-10 15:38:23,607 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 132 [2018-10-10 15:38:24,618 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 123 [2018-10-10 15:38:25,558 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-10 15:38:25,837 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-10 15:38:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:27,127 INFO L93 Difference]: Finished difference Result 480 states and 482 transitions. [2018-10-10 15:38:27,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-10 15:38:27,128 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 302 [2018-10-10 15:38:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:27,130 INFO L225 Difference]: With dead ends: 480 [2018-10-10 15:38:27,130 INFO L226 Difference]: Without dead ends: 480 [2018-10-10 15:38:27,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13533 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=3821, Invalid=47481, Unknown=0, NotChecked=0, Total=51302 [2018-10-10 15:38:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-10-10 15:38:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 360. [2018-10-10 15:38:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-10-10 15:38:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 362 transitions. [2018-10-10 15:38:27,139 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 362 transitions. Word has length 302 [2018-10-10 15:38:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:27,140 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 362 transitions. [2018-10-10 15:38:27,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-10 15:38:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 362 transitions. [2018-10-10 15:38:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-10 15:38:27,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:27,142 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:38:27,142 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:27,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:27,143 INFO L82 PathProgramCache]: Analyzing trace with hash -452349129, now seen corresponding path program 9 times [2018-10-10 15:38:27,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:29,756 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-10-10 15:38:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:38:34,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:38:34,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-10 15:38:34,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-10 15:38:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-10 15:38:34,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=5618, Unknown=0, NotChecked=0, Total=5852 [2018-10-10 15:38:34,295 INFO L87 Difference]: Start difference. First operand 360 states and 362 transitions. Second operand 77 states. [2018-10-10 15:38:38,451 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:38:38,730 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-10-10 15:38:39,579 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-10 15:38:40,683 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2018-10-10 15:38:42,282 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2018-10-10 15:38:43,296 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-10 15:38:43,610 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-10 15:38:43,869 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:38:44,532 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-10 15:38:44,835 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:38:45,106 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:38:45,509 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:38:45,831 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2018-10-10 15:38:46,187 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2018-10-10 15:38:46,631 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-10 15:38:46,982 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2018-10-10 15:38:47,278 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-10-10 15:38:47,615 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 84 [2018-10-10 15:38:48,117 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 98 [2018-10-10 15:38:48,578 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-10-10 15:38:49,093 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 102 [2018-10-10 15:38:49,472 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 97 [2018-10-10 15:38:50,394 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-10-10 15:38:50,752 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-10 15:38:51,116 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2018-10-10 15:38:51,507 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 89 [2018-10-10 15:38:52,269 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-10 15:38:52,642 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 103 [2018-10-10 15:38:53,562 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-10 15:38:54,409 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-10-10 15:38:54,697 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-10 15:39:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:39:03,157 INFO L93 Difference]: Finished difference Result 508 states and 510 transitions. [2018-10-10 15:39:03,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-10 15:39:03,158 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 306 [2018-10-10 15:39:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:39:03,161 INFO L225 Difference]: With dead ends: 508 [2018-10-10 15:39:03,161 INFO L226 Difference]: Without dead ends: 508 [2018-10-10 15:39:03,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8257 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=1394, Invalid=31186, Unknown=0, NotChecked=0, Total=32580 [2018-10-10 15:39:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2018-10-10 15:39:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 388. [2018-10-10 15:39:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-10-10 15:39:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 390 transitions. [2018-10-10 15:39:03,171 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 390 transitions. Word has length 306 [2018-10-10 15:39:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:39:03,171 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 390 transitions. [2018-10-10 15:39:03,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-10 15:39:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 390 transitions. [2018-10-10 15:39:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-10 15:39:03,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:39:03,174 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:39:03,174 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:39:03,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:39:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash 542116777, now seen corresponding path program 10 times [2018-10-10 15:39:03,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:39:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:39:03,897 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-10 15:39:07,453 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:39:07,644 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 15:39:07,862 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-10 15:39:08,063 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-10 15:39:08,338 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-10-10 15:39:08,598 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-10-10 15:39:08,813 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-10 15:39:09,203 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-10 15:39:09,616 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-10-10 15:39:09,957 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-10-10 15:39:10,209 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2018-10-10 15:39:10,442 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:39:10,671 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2018-10-10 15:39:10,946 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2018-10-10 15:39:11,219 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-10 15:39:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:39:17,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:39:17,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-10-10 15:39:17,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-10 15:39:17,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-10 15:39:17,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=9164, Unknown=0, NotChecked=0, Total=9506 [2018-10-10 15:39:17,668 INFO L87 Difference]: Start difference. First operand 388 states and 390 transitions. Second operand 98 states. [2018-10-10 15:39:26,678 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:39:28,528 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2018-10-10 15:39:28,887 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 15:39:29,621 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-10 15:39:29,961 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2018-10-10 15:39:30,282 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-10 15:39:31,107 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2018-10-10 15:39:31,362 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:39:31,592 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-10 15:39:31,816 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2018-10-10 15:39:32,354 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2018-10-10 15:39:32,670 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2018-10-10 15:39:33,472 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-10 15:39:33,925 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-10 15:39:34,538 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2018-10-10 15:39:34,830 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 15:39:35,128 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2018-10-10 15:39:35,509 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-10-10 15:39:35,967 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2018-10-10 15:39:36,436 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2018-10-10 15:39:36,868 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2018-10-10 15:39:37,284 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 15:39:37,748 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2018-10-10 15:39:38,153 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:39:38,667 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2018-10-10 15:39:39,136 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:39:39,588 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-10 15:39:39,878 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 15:39:40,400 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2018-10-10 15:39:40,833 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2018-10-10 15:39:41,489 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 124 [2018-10-10 15:39:42,247 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 126 [2018-10-10 15:39:42,733 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2018-10-10 15:39:43,382 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-10 15:39:43,730 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2018-10-10 15:39:44,471 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 124 [2018-10-10 15:39:45,002 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 112 [2018-10-10 15:39:45,650 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 126 [2018-10-10 15:39:46,524 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-10 15:39:46,806 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:39:47,313 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2018-10-10 15:39:47,651 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-10-10 15:39:47,959 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-10-10 15:39:48,585 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2018-10-10 15:39:49,126 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2018-10-10 15:39:49,713 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 104 [2018-10-10 15:39:50,096 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-10-10 15:39:50,536 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 106 [2018-10-10 15:39:50,994 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2018-10-10 15:39:51,947 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-10-10 15:39:52,269 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-10 15:39:52,832 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2018-10-10 15:39:53,147 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-10 15:39:53,673 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 113 [2018-10-10 15:39:54,322 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 126 [2018-10-10 15:39:55,260 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2018-10-10 15:39:55,937 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 142 [2018-10-10 15:39:56,753 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 143 [2018-10-10 15:39:58,161 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 138 [2018-10-10 15:39:58,664 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2018-10-10 15:39:59,436 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2018-10-10 15:40:00,177 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 102 [2018-10-10 15:40:00,711 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-10 15:40:01,253 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 15:40:01,792 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 15:40:02,131 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-10 15:40:04,799 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2018-10-10 15:40:05,117 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-10-10 15:40:06,030 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2018-10-10 15:40:06,530 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-10 15:40:07,543 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-10 15:40:08,099 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-10 15:40:08,458 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:40:08,885 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-10-10 15:40:09,368 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-10 15:40:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:09,847 INFO L93 Difference]: Finished difference Result 655 states and 658 transitions. [2018-10-10 15:40:09,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-10 15:40:09,848 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 330 [2018-10-10 15:40:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:09,850 INFO L225 Difference]: With dead ends: 655 [2018-10-10 15:40:09,851 INFO L226 Difference]: Without dead ends: 655 [2018-10-10 15:40:09,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 2 SyntacticMatches, 9 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14741 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=2335, Invalid=53597, Unknown=0, NotChecked=0, Total=55932 [2018-10-10 15:40:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-10-10 15:40:09,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 441. [2018-10-10 15:40:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-10-10 15:40:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 444 transitions. [2018-10-10 15:40:09,861 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 444 transitions. Word has length 330 [2018-10-10 15:40:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:09,862 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 444 transitions. [2018-10-10 15:40:09,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-10 15:40:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 444 transitions. [2018-10-10 15:40:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-10 15:40:09,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:09,864 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:40:09,865 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:09,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1160939365, now seen corresponding path program 11 times [2018-10-10 15:40:09,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:12,240 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-10 15:40:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 0 proven. 566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:40:16,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:40:16,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-10 15:40:16,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-10 15:40:16,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-10 15:40:16,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=5775, Unknown=0, NotChecked=0, Total=6006 [2018-10-10 15:40:16,947 INFO L87 Difference]: Start difference. First operand 441 states and 444 transitions. Second operand 78 states. [2018-10-10 15:40:21,867 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-10 15:40:24,771 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:40:25,052 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:40:25,303 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:40:25,532 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-10 15:40:25,956 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-10-10 15:40:26,194 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-10 15:40:26,399 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2018-10-10 15:40:26,712 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-10 15:40:27,014 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-10 15:40:27,771 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2018-10-10 15:40:28,271 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:40:28,648 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2018-10-10 15:40:28,952 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-10-10 15:40:29,284 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2018-10-10 15:40:29,766 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2018-10-10 15:40:30,227 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2018-10-10 15:40:30,592 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2018-10-10 15:40:31,521 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-10 15:40:31,906 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2018-10-10 15:40:32,300 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2018-10-10 15:40:33,089 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2018-10-10 15:40:33,471 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-10 15:40:33,965 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 105 [2018-10-10 15:40:34,463 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2018-10-10 15:40:34,839 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2018-10-10 15:40:35,717 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-10 15:40:36,202 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2018-10-10 15:40:36,654 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-10 15:40:36,959 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2018-10-10 15:40:37,237 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2018-10-10 15:40:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:45,311 INFO L93 Difference]: Finished difference Result 639 states and 642 transitions. [2018-10-10 15:40:45,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-10 15:40:45,312 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 334 [2018-10-10 15:40:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:45,316 INFO L225 Difference]: With dead ends: 639 [2018-10-10 15:40:45,316 INFO L226 Difference]: Without dead ends: 639 [2018-10-10 15:40:45,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8764 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=1388, Invalid=31918, Unknown=0, NotChecked=0, Total=33306 [2018-10-10 15:40:45,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-10-10 15:40:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 469. [2018-10-10 15:40:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-10-10 15:40:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 472 transitions. [2018-10-10 15:40:45,326 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 472 transitions. Word has length 334 [2018-10-10 15:40:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:45,327 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 472 transitions. [2018-10-10 15:40:45,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-10 15:40:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 472 transitions. [2018-10-10 15:40:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-10 15:40:45,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:45,329 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:40:45,329 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:45,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1469620439, now seen corresponding path program 12 times [2018-10-10 15:40:45,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:46,169 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:40:46,406 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:40:50,867 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-10 15:41:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:08,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:08,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-10-10 15:41:08,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-10 15:41:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-10 15:41:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=18194, Unknown=0, NotChecked=0, Total=18632 [2018-10-10 15:41:08,531 INFO L87 Difference]: Start difference. First operand 469 states and 472 transitions. Second operand 137 states. [2018-10-10 15:41:17,414 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-10-10 15:41:18,749 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-10 15:41:24,321 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2018-10-10 15:41:24,850 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 78 [2018-10-10 15:41:25,238 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2018-10-10 15:41:26,596 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2018-10-10 15:41:27,080 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 61 [2018-10-10 15:41:27,565 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 66 [2018-10-10 15:41:28,268 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-10 15:41:28,686 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2018-10-10 15:41:29,190 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2018-10-10 15:41:30,233 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-10 15:41:30,680 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-10 15:41:31,170 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2018-10-10 15:41:31,743 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2018-10-10 15:41:32,505 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-10-10 15:41:33,239 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2018-10-10 15:41:33,696 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2018-10-10 15:41:35,439 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-10 15:41:36,001 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:41:36,566 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2018-10-10 15:41:37,215 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2018-10-10 15:41:37,827 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 92 [2018-10-10 15:41:38,486 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-10 15:41:39,102 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2018-10-10 15:41:40,025 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 118 [2018-10-10 15:41:41,306 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 139 [2018-10-10 15:41:42,047 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2018-10-10 15:41:42,879 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 111 [2018-10-10 15:41:43,851 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 134 [2018-10-10 15:41:44,346 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2018-10-10 15:41:44,874 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-10 15:41:45,456 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2018-10-10 15:41:45,962 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2018-10-10 15:41:46,486 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2018-10-10 15:41:47,551 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 142 [2018-10-10 15:41:48,183 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2018-10-10 15:41:49,357 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 173 [2018-10-10 15:41:50,059 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2018-10-10 15:41:50,906 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 172 [2018-10-10 15:41:51,463 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2018-10-10 15:41:52,097 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2018-10-10 15:41:52,817 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2018-10-10 15:41:53,440 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2018-10-10 15:41:54,220 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 119 [2018-10-10 15:41:55,116 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 118 [2018-10-10 15:41:56,180 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-10 15:41:56,575 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:41:57,283 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2018-10-10 15:41:58,025 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2018-10-10 15:41:58,706 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2018-10-10 15:41:59,472 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 116 [2018-10-10 15:42:00,437 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2018-10-10 15:42:01,056 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2018-10-10 15:42:01,468 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2018-10-10 15:42:01,785 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-10 15:42:02,254 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:42:02,731 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:42:03,227 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2018-10-10 15:42:03,833 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 121 [2018-10-10 15:42:04,740 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 127 [2018-10-10 15:42:05,431 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-10 15:42:06,254 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 129 [2018-10-10 15:42:07,141 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 124 [2018-10-10 15:42:07,594 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-10-10 15:42:08,105 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-10-10 15:42:08,633 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-10 15:42:09,404 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 145 [2018-10-10 15:42:09,853 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 15:42:10,753 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-10 15:42:11,307 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-10 15:42:11,853 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-10 15:42:12,510 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-10 15:42:12,972 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2018-10-10 15:42:14,217 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2018-10-10 15:42:15,238 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 113 [2018-10-10 15:42:16,468 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2018-10-10 15:42:17,669 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-10 15:42:18,291 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 95 [2018-10-10 15:42:19,090 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 126 [2018-10-10 15:42:20,686 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2018-10-10 15:42:21,544 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-10 15:42:22,180 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 121 [2018-10-10 15:42:23,625 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-10-10 15:42:24,673 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2018-10-10 15:42:25,598 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2018-10-10 15:42:26,456 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 161 [2018-10-10 15:42:27,012 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 133 [2018-10-10 15:42:27,393 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-10 15:42:27,975 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 105 [2018-10-10 15:42:28,461 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2018-10-10 15:42:30,042 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2018-10-10 15:42:31,527 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-10-10 15:42:32,005 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2018-10-10 15:42:32,383 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-10 15:42:32,819 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-10 15:42:33,525 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:42:34,215 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2018-10-10 15:42:34,996 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2018-10-10 15:42:37,235 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2018-10-10 15:42:38,155 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 176 [2018-10-10 15:42:38,791 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:42:39,099 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 15:42:41,580 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-10 15:42:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:44,811 INFO L93 Difference]: Finished difference Result 704 states and 707 transitions. [2018-10-10 15:42:44,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-10 15:42:44,811 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 358 [2018-10-10 15:42:44,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:44,815 INFO L225 Difference]: With dead ends: 704 [2018-10-10 15:42:44,815 INFO L226 Difference]: Without dead ends: 704 [2018-10-10 15:42:44,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30242 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=3709, Invalid=102241, Unknown=0, NotChecked=0, Total=105950 [2018-10-10 15:42:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-10-10 15:42:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 469. [2018-10-10 15:42:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-10-10 15:42:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 472 transitions. [2018-10-10 15:42:44,827 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 472 transitions. Word has length 358 [2018-10-10 15:42:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:44,827 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 472 transitions. [2018-10-10 15:42:44,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-10 15:42:44,828 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 472 transitions. [2018-10-10 15:42:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-10 15:42:44,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:44,830 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:44,830 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:44,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash -286233965, now seen corresponding path program 13 times [2018-10-10 15:42:44,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:53,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:53,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-10 15:42:53,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-10 15:42:53,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-10 15:42:53,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=6594, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:42:53,949 INFO L87 Difference]: Start difference. First operand 469 states and 472 transitions. Second operand 83 states. [2018-10-10 15:42:58,604 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:43:02,337 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2018-10-10 15:43:03,098 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-10 15:43:03,433 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-10 15:43:03,686 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:43:04,349 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-10 15:43:04,734 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:43:05,057 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-10 15:43:05,559 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-10 15:43:06,027 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2018-10-10 15:43:06,381 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2018-10-10 15:43:06,835 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-10 15:43:07,377 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2018-10-10 15:43:07,951 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2018-10-10 15:43:08,476 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-10 15:43:08,979 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2018-10-10 15:43:09,482 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2018-10-10 15:43:09,963 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 114 [2018-10-10 15:43:10,509 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 124 [2018-10-10 15:43:11,077 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-10 15:43:11,573 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 110 [2018-10-10 15:43:12,116 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 118 [2018-10-10 15:43:12,558 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 113 [2018-10-10 15:43:13,606 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-10 15:43:14,037 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-10-10 15:43:14,488 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2018-10-10 15:43:14,906 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2018-10-10 15:43:15,694 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-10 15:43:16,092 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 104 [2018-10-10 15:43:17,028 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 97 [2018-10-10 15:43:17,689 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-10 15:43:18,029 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-10-10 15:43:18,367 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:43:18,599 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-10 15:43:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:32,418 INFO L93 Difference]: Finished difference Result 695 states and 698 transitions. [2018-10-10 15:43:32,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-10 15:43:32,419 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2018-10-10 15:43:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:32,422 INFO L225 Difference]: With dead ends: 695 [2018-10-10 15:43:32,423 INFO L226 Difference]: Without dead ends: 695 [2018-10-10 15:43:32,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9092 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=1388, Invalid=36832, Unknown=0, NotChecked=0, Total=38220 [2018-10-10 15:43:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2018-10-10 15:43:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 497. [2018-10-10 15:43:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-10-10 15:43:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 500 transitions. [2018-10-10 15:43:32,433 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 500 transitions. Word has length 362 [2018-10-10 15:43:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:32,434 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 500 transitions. [2018-10-10 15:43:32,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-10 15:43:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 500 transitions. [2018-10-10 15:43:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-10 15:43:32,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:32,437 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:32,437 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:32,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:32,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1638393527, now seen corresponding path program 14 times [2018-10-10 15:43:32,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat