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_30.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:33:32,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:33:32,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:33:32,489 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:33:32,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:33:32,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:33:32,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:33:32,495 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:33:32,497 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:33:32,498 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:33:32,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:33:32,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:33:32,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:33:32,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:33:32,504 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:33:32,504 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:33:32,505 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:33:32,507 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:33:32,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:33:32,511 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:33:32,512 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:33:32,513 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:33:32,516 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:33:32,524 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 15:33:32,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:33:32,542 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:33:32,543 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:33:32,544 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:33:32,547 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:33:32,547 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:33:32,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:33:32,548 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:33:32,548 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:33:32,548 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:33:32,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:33:32,550 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:33:32,550 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:33:32,552 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:33:32,552 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:33:32,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:33:32,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:33:32,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:33:32,620 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:33:32,620 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:33:32,621 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_30.bpl [2018-10-10 15:33:32,621 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_30.bpl' [2018-10-10 15:33:32,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:33:32,696 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:33:32,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:33:32,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:33:32,698 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:33:32,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/1) ... [2018-10-10 15:33:32,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:33:32,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:33:32,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:33:32,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:33:32,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (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 15:33:32,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:33:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:33:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:33:33,701 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:33:33,702 INFO L202 PluginConnector]: Adding new model dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:33:33 BoogieIcfgContainer [2018-10-10 15:33:33,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:33:33,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:33:33,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:33:33,707 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:33:33,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:33:32" (1/2) ... [2018-10-10 15:33:33,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea8bdc9 and model type dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:33:33, skipping insertion in model container [2018-10-10 15:33:33,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dll_extends_pointer_true-valid-memsafety.i_30.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:33:33" (2/2) ... [2018-10-10 15:33:33,711 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_extends_pointer_true-valid-memsafety.i_30.bpl [2018-10-10 15:33:33,721 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:33:33,730 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:33:33,749 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:33:33,781 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:33:33,782 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:33:33,783 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:33:33,783 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:33:33,783 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:33:33,783 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:33:33,783 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:33:33,784 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:33:33,785 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:33:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2018-10-10 15:33:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-10 15:33:33,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:33,844 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] [2018-10-10 15:33:33,845 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:33,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:33,854 INFO L82 PathProgramCache]: Analyzing trace with hash 693763894, now seen corresponding path program 1 times [2018-10-10 15:33:33,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:34,586 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 15:33:34,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:33:34,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:33:34,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:33:34,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:33:34,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:33:34,616 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 9 states. [2018-10-10 15:33:35,283 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-10 15:33:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:35,900 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2018-10-10 15:33:35,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:33:35,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-10-10 15:33:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:35,920 INFO L225 Difference]: With dead ends: 184 [2018-10-10 15:33:35,921 INFO L226 Difference]: Without dead ends: 184 [2018-10-10 15:33:35,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:33:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-10 15:33:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 124. [2018-10-10 15:33:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-10 15:33:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-10-10 15:33:35,978 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 52 [2018-10-10 15:33:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:35,979 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-10-10 15:33:35,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:33:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-10-10 15:33:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:33:35,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:35,983 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:33:35,984 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:35,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:35,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1582986364, now seen corresponding path program 1 times [2018-10-10 15:33:35,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:36,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:36,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-10 15:33:36,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-10 15:33:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-10 15:33:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:33:36,764 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 14 states. [2018-10-10 15:33:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:37,927 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-10-10 15:33:37,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-10 15:33:37,928 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2018-10-10 15:33:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:37,933 INFO L225 Difference]: With dead ends: 169 [2018-10-10 15:33:37,934 INFO L226 Difference]: Without dead ends: 139 [2018-10-10 15:33:37,935 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 15:33:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-10 15:33:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 118. [2018-10-10 15:33:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-10 15:33:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2018-10-10 15:33:37,946 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 80 [2018-10-10 15:33:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:37,947 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2018-10-10 15:33:37,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-10 15:33:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2018-10-10 15:33:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-10 15:33:37,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:37,951 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] [2018-10-10 15:33:37,951 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:37,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash 124963323, now seen corresponding path program 1 times [2018-10-10 15:33:37,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:38,188 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 15:33:38,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:33:38,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:33:38,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:33:38,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:33:38,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:33:38,190 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 9 states. [2018-10-10 15:33:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:38,634 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-10-10 15:33:38,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:33:38,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2018-10-10 15:33:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:38,639 INFO L225 Difference]: With dead ends: 153 [2018-10-10 15:33:38,639 INFO L226 Difference]: Without dead ends: 153 [2018-10-10 15:33:38,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:33:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-10 15:33:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2018-10-10 15:33:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-10 15:33:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-10-10 15:33:38,650 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 94 [2018-10-10 15:33:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:38,651 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-10-10 15:33:38,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:33:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-10-10 15:33:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-10 15:33:38,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:38,654 INFO L375 BasicCegarLoop]: trace histogram [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 15:33:38,654 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:38,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1064948535, now seen corresponding path program 1 times [2018-10-10 15:33:38,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:40,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:40,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-10 15:33:40,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-10 15:33:40,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-10 15:33:40,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2018-10-10 15:33:40,249 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 28 states. [2018-10-10 15:33:43,008 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:33:43,660 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-10 15:33:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:45,405 INFO L93 Difference]: Finished difference Result 164 states and 165 transitions. [2018-10-10 15:33:45,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:33:45,406 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 122 [2018-10-10 15:33:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:45,408 INFO L225 Difference]: With dead ends: 164 [2018-10-10 15:33:45,409 INFO L226 Difference]: Without dead ends: 164 [2018-10-10 15:33:45,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=493, Invalid=3047, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:33:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-10 15:33:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2018-10-10 15:33:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-10 15:33:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-10-10 15:33:45,421 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 122 [2018-10-10 15:33:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:45,422 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-10-10 15:33:45,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-10 15:33:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-10-10 15:33:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-10 15:33:45,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:45,428 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:45,428 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:45,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1025741161, now seen corresponding path program 2 times [2018-10-10 15:33:45,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:47,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:47,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-10 15:33:47,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-10 15:33:47,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-10 15:33:47,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2018-10-10 15:33:47,164 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 34 states. [2018-10-10 15:33:49,271 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-10 15:33:49,601 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-10 15:33:49,922 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:33:50,106 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-10 15:33:50,448 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-10 15:33:51,305 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-10 15:33:53,130 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-10 15:33:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:54,908 INFO L93 Difference]: Finished difference Result 270 states and 271 transitions. [2018-10-10 15:33:54,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-10 15:33:54,910 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 150 [2018-10-10 15:33:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:54,912 INFO L225 Difference]: With dead ends: 270 [2018-10-10 15:33:54,912 INFO L226 Difference]: Without dead ends: 212 [2018-10-10 15:33:54,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=639, Invalid=6501, Unknown=0, NotChecked=0, Total=7140 [2018-10-10 15:33:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-10 15:33:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2018-10-10 15:33:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-10 15:33:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-10-10 15:33:54,926 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 150 [2018-10-10 15:33:54,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:54,926 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-10-10 15:33:54,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-10 15:33:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-10-10 15:33:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-10 15:33:54,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:54,930 INFO L375 BasicCegarLoop]: trace histogram [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 15:33:54,930 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:54,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:54,931 INFO L82 PathProgramCache]: Analyzing trace with hash -264265700, now seen corresponding path program 3 times [2018-10-10 15:33:54,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:58,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:58,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 15:33:58,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 15:33:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 15:33:58,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2528, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:33:58,204 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 52 states. [2018-10-10 15:34:01,988 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-10 15:34:02,194 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:34:02,392 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:34:02,592 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-10 15:34:03,140 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-10 15:34:03,437 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-10 15:34:03,687 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-10 15:34:03,931 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:34:05,291 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-10 15:34:05,758 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:34:06,382 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-10-10 15:34:06,612 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:34:07,085 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:34:09,994 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-10 15:34:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:12,093 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2018-10-10 15:34:12,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-10 15:34:12,093 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2018-10-10 15:34:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:12,096 INFO L225 Difference]: With dead ends: 310 [2018-10-10 15:34:12,097 INFO L226 Difference]: Without dead ends: 310 [2018-10-10 15:34:12,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2503 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1035, Invalid=12305, Unknown=0, NotChecked=0, Total=13340 [2018-10-10 15:34:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-10-10 15:34:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 264. [2018-10-10 15:34:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-10 15:34:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 266 transitions. [2018-10-10 15:34:12,113 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 266 transitions. Word has length 192 [2018-10-10 15:34:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:12,114 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 266 transitions. [2018-10-10 15:34:12,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 15:34:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 266 transitions. [2018-10-10 15:34:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-10 15:34:12,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:12,119 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:34:12,122 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:12,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:12,122 INFO L82 PathProgramCache]: Analyzing trace with hash -610109590, now seen corresponding path program 4 times [2018-10-10 15:34:12,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:13,674 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-10-10 15:34:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 12 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:16,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:16,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-10 15:34:16,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-10 15:34:16,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-10 15:34:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2819, Unknown=0, NotChecked=0, Total=2970 [2018-10-10 15:34:16,561 INFO L87 Difference]: Start difference. First operand 264 states and 266 transitions. Second operand 55 states. [2018-10-10 15:34:19,751 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-10 15:34:20,557 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:34:20,788 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-10-10 15:34:21,287 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2018-10-10 15:34:21,790 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-10 15:34:22,371 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:34:22,598 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:34:22,802 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:34:23,599 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-10 15:34:23,876 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2018-10-10 15:34:24,210 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2018-10-10 15:34:24,794 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2018-10-10 15:34:25,058 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-10 15:34:25,412 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 94 [2018-10-10 15:34:25,822 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-10 15:34:26,166 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:34:26,542 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-10 15:34:27,223 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-10 15:34:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:31,006 INFO L93 Difference]: Finished difference Result 340 states and 341 transitions. [2018-10-10 15:34:31,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-10 15:34:31,006 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 220 [2018-10-10 15:34:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:31,009 INFO L225 Difference]: With dead ends: 340 [2018-10-10 15:34:31,009 INFO L226 Difference]: Without dead ends: 254 [2018-10-10 15:34:31,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4284 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=972, Invalid=16058, Unknown=0, NotChecked=0, Total=17030 [2018-10-10 15:34:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-10 15:34:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2018-10-10 15:34:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-10 15:34:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-10-10 15:34:31,022 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 220 [2018-10-10 15:34:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:31,022 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-10-10 15:34:31,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-10 15:34:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-10-10 15:34:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-10 15:34:31,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:31,026 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, 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 15:34:31,027 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:31,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1393826657, now seen corresponding path program 5 times [2018-10-10 15:34:31,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:34,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:34,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 15:34:34,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 15:34:34,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 15:34:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2528, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:34:34,489 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 52 states. [2018-10-10 15:34:38,032 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:34:38,382 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-10 15:34:38,608 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-10 15:34:38,825 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-10 15:34:39,043 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2018-10-10 15:34:39,339 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2018-10-10 15:34:39,650 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-10-10 15:34:39,973 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-10 15:34:40,264 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-10 15:34:40,887 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-10 15:34:41,086 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-10 15:34:42,074 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-10-10 15:34:42,913 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:34:43,132 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-10 15:34:43,401 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-10 15:34:43,711 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:34:43,977 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2018-10-10 15:34:44,298 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2018-10-10 15:34:44,594 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2018-10-10 15:34:44,898 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2018-10-10 15:34:45,226 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2018-10-10 15:34:45,607 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2018-10-10 15:34:45,956 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-10 15:34:46,336 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2018-10-10 15:34:46,771 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2018-10-10 15:34:46,998 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:34:47,351 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2018-10-10 15:34:47,698 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2018-10-10 15:34:48,243 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-10 15:34:48,652 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2018-10-10 15:34:48,998 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 105 [2018-10-10 15:34:49,260 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2018-10-10 15:34:49,498 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-10 15:34:49,821 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-10-10 15:34:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:50,996 INFO L93 Difference]: Finished difference Result 276 states and 277 transitions. [2018-10-10 15:34:50,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-10 15:34:50,997 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 234 [2018-10-10 15:34:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:51,000 INFO L225 Difference]: With dead ends: 276 [2018-10-10 15:34:51,000 INFO L226 Difference]: Without dead ends: 276 [2018-10-10 15:34:51,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=1702, Invalid=11638, Unknown=0, NotChecked=0, Total=13340 [2018-10-10 15:34:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-10 15:34:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 263. [2018-10-10 15:34:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-10 15:34:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-10-10 15:34:51,010 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 234 [2018-10-10 15:34:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:51,011 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-10-10 15:34:51,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 15:34:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-10-10 15:34:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-10 15:34:51,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:51,015 INFO L375 BasicCegarLoop]: trace histogram [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 15:34:51,016 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:51,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash -37156561, now seen corresponding path program 6 times [2018-10-10 15:34:51,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:52,385 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:34:52,627 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:34:53,264 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-10 15:34:54,183 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-10-10 15:34:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:59,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:59,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-10 15:34:59,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-10 15:34:59,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-10 15:34:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=5361, Unknown=0, NotChecked=0, Total=5550 [2018-10-10 15:34:59,585 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 75 states. [2018-10-10 15:35:03,728 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-10 15:35:03,981 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:35:04,228 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:35:04,472 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-10 15:35:05,215 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-10 15:35:05,625 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-10 15:35:06,157 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:35:06,418 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:35:07,820 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:35:08,127 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:35:08,756 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:35:09,201 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-10 15:35:09,504 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-10-10 15:35:10,143 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-10 15:35:10,630 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-10-10 15:35:11,410 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-10 15:35:11,724 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2018-10-10 15:35:11,967 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2018-10-10 15:35:13,002 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2018-10-10 15:35:13,238 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:35:13,524 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:35:13,852 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-10 15:35:14,199 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2018-10-10 15:35:14,815 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-10 15:35:15,115 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2018-10-10 15:35:15,408 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-10 15:35:16,253 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2018-10-10 15:35:17,090 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2018-10-10 15:35:17,494 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2018-10-10 15:35:18,239 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2018-10-10 15:35:19,406 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-10 15:35:19,641 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2018-10-10 15:35:25,877 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-10-10 15:35:26,381 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-10 15:35:26,690 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2018-10-10 15:35:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:27,932 INFO L93 Difference]: Finished difference Result 507 states and 510 transitions. [2018-10-10 15:35:27,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-10 15:35:27,933 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 262 [2018-10-10 15:35:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:27,937 INFO L225 Difference]: With dead ends: 507 [2018-10-10 15:35:27,937 INFO L226 Difference]: Without dead ends: 507 [2018-10-10 15:35:27,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7607 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=1820, Invalid=31486, Unknown=0, NotChecked=0, Total=33306 [2018-10-10 15:35:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-10-10 15:35:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 376. [2018-10-10 15:35:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-10-10 15:35:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 379 transitions. [2018-10-10 15:35:27,948 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 379 transitions. Word has length 262 [2018-10-10 15:35:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:27,951 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 379 transitions. [2018-10-10 15:35:27,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-10 15:35:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 379 transitions. [2018-10-10 15:35:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-10 15:35:27,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:27,954 INFO L375 BasicCegarLoop]: trace histogram [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, 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 15:35:27,954 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:27,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:27,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2024647171, now seen corresponding path program 7 times [2018-10-10 15:35:27,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:36,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:36,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-10 15:35:36,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-10 15:35:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-10 15:35:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=6868, Unknown=0, NotChecked=0, Total=7140 [2018-10-10 15:35:36,461 INFO L87 Difference]: Start difference. First operand 376 states and 379 transitions. Second operand 85 states. [2018-10-10 15:35:43,064 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-10 15:35:43,348 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-10-10 15:35:43,631 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-10 15:35:43,891 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-10 15:35:44,858 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-10 15:35:45,123 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-10 15:35:45,428 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2018-10-10 15:35:45,854 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2018-10-10 15:35:46,685 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-10 15:35:46,989 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:35:47,337 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2018-10-10 15:35:47,725 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2018-10-10 15:35:48,160 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2018-10-10 15:35:48,533 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2018-10-10 15:35:48,908 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2018-10-10 15:35:49,240 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2018-10-10 15:35:50,139 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2018-10-10 15:35:50,500 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2018-10-10 15:35:50,791 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2018-10-10 15:35:51,356 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-10 15:35:51,673 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-10 15:35:51,928 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-10 15:35:52,234 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2018-10-10 15:35:52,642 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2018-10-10 15:35:53,107 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2018-10-10 15:35:53,640 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 91 [2018-10-10 15:35:54,442 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-10-10 15:35:54,833 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-10-10 15:35:55,156 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2018-10-10 15:35:56,135 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2018-10-10 15:35:56,638 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-10-10 15:35:57,055 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2018-10-10 15:35:57,768 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 95 [2018-10-10 15:36:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:04,934 INFO L93 Difference]: Finished difference Result 576 states and 580 transitions. [2018-10-10 15:36:04,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-10 15:36:04,935 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 290 [2018-10-10 15:36:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:04,938 INFO L225 Difference]: With dead ends: 576 [2018-10-10 15:36:04,938 INFO L226 Difference]: Without dead ends: 576 [2018-10-10 15:36:04,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9703 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=1531, Invalid=32509, Unknown=0, NotChecked=0, Total=34040 [2018-10-10 15:36:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2018-10-10 15:36:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 447. [2018-10-10 15:36:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-10-10 15:36:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 451 transitions. [2018-10-10 15:36:04,949 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 451 transitions. Word has length 290 [2018-10-10 15:36:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:04,950 INFO L481 AbstractCegarLoop]: Abstraction has 447 states and 451 transitions. [2018-10-10 15:36:04,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-10 15:36:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 451 transitions. [2018-10-10 15:36:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-10 15:36:04,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:04,952 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:04,953 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:04,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1954245452, now seen corresponding path program 8 times [2018-10-10 15:36:04,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:08,476 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-10-10 15:36:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 20 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:36:11,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:36:11,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-10 15:36:11,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-10 15:36:11,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-10 15:36:11,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=5222, Unknown=0, NotChecked=0, Total=5402 [2018-10-10 15:36:11,931 INFO L87 Difference]: Start difference. First operand 447 states and 451 transitions. Second operand 74 states. [2018-10-10 15:36:16,466 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-10 15:36:16,924 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-10 15:36:17,192 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-10 15:36:17,439 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-10 15:36:17,702 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2018-10-10 15:36:18,055 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2018-10-10 15:36:18,445 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-10-10 15:36:18,851 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-10 15:36:19,169 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-10 15:36:19,535 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-10 15:36:19,807 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-10 15:36:21,032 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:36:21,292 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-10 15:36:21,620 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-10 15:36:22,059 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-10 15:36:22,397 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2018-10-10 15:36:22,769 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 85 [2018-10-10 15:36:23,121 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2018-10-10 15:36:23,510 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 84 [2018-10-10 15:36:23,935 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2018-10-10 15:36:24,430 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2018-10-10 15:36:24,934 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-10 15:36:25,362 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-10-10 15:36:25,871 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-10 15:36:26,162 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2018-10-10 15:36:26,518 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2018-10-10 15:36:26,909 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-10 15:36:28,253 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2018-10-10 15:36:28,513 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-10 15:36:28,967 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2018-10-10 15:36:29,237 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:36:29,670 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2018-10-10 15:36:30,041 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-10 15:36:30,342 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2018-10-10 15:36:30,741 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2018-10-10 15:36:31,024 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2018-10-10 15:36:31,522 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2018-10-10 15:36:32,085 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-10 15:36:32,409 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-10 15:36:32,915 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 101 [2018-10-10 15:36:33,444 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 109 [2018-10-10 15:36:33,986 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 108 [2018-10-10 15:36:34,501 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 110 [2018-10-10 15:36:35,273 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2018-10-10 15:36:36,103 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 114 [2018-10-10 15:36:36,738 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 86 [2018-10-10 15:36:37,502 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 128 [2018-10-10 15:36:38,342 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 140 [2018-10-10 15:36:38,722 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-10 15:36:39,186 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2018-10-10 15:36:39,702 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 133 [2018-10-10 15:36:40,694 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2018-10-10 15:36:41,335 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 155 [2018-10-10 15:36:41,891 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 142 [2018-10-10 15:36:42,327 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2018-10-10 15:36:42,701 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-10-10 15:36:43,243 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-10 15:36:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:45,780 INFO L93 Difference]: Finished difference Result 638 states and 642 transitions. [2018-10-10 15:36:45,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-10 15:36:45,780 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 304 [2018-10-10 15:36:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:45,783 INFO L225 Difference]: With dead ends: 638 [2018-10-10 15:36:45,783 INFO L226 Difference]: Without dead ends: 638 [2018-10-10 15:36:45,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5868 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=3149, Invalid=26607, Unknown=0, NotChecked=0, Total=29756 [2018-10-10 15:36:45,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2018-10-10 15:36:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 362. [2018-10-10 15:36:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-10-10 15:36:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 364 transitions. [2018-10-10 15:36:45,792 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 364 transitions. Word has length 304 [2018-10-10 15:36:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:45,793 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 364 transitions. [2018-10-10 15:36:45,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-10 15:36:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 364 transitions. [2018-10-10 15:36:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-10 15:36:45,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:45,795 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:45,796 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:45,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash -813989429, now seen corresponding path program 9 times [2018-10-10 15:36:45,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:50,282 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2018-10-10 15:36:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:36:55,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:36:55,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-10 15:36:55,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-10 15:36:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-10 15:36:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=7861, Unknown=0, NotChecked=0, Total=8190 [2018-10-10 15:36:55,101 INFO L87 Difference]: Start difference. First operand 362 states and 364 transitions. Second operand 91 states. [2018-10-10 15:36:58,717 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:37:01,373 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2018-10-10 15:37:01,682 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-10 15:37:01,940 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-10 15:37:03,436 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-10 15:37:03,763 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-10 15:37:04,358 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-10 15:37:04,644 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:37:04,922 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-10-10 15:37:05,227 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-10 15:37:06,194 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-10 15:37:06,998 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-10-10 15:37:07,358 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2018-10-10 15:37:07,651 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2018-10-10 15:37:08,700 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:37:08,984 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2018-10-10 15:37:09,342 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 90 [2018-10-10 15:37:09,749 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 92 [2018-10-10 15:37:10,562 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 93 [2018-10-10 15:37:11,025 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 95 [2018-10-10 15:37:11,443 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2018-10-10 15:37:12,230 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2018-10-10 15:37:12,624 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2018-10-10 15:37:13,490 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2018-10-10 15:37:14,228 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2018-10-10 15:37:14,996 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 15:37:15,283 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 15:37:17,521 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 15:37:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:37:22,762 INFO L93 Difference]: Finished difference Result 492 states and 494 transitions. [2018-10-10 15:37:22,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-10 15:37:22,763 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 318 [2018-10-10 15:37:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:37:22,766 INFO L225 Difference]: With dead ends: 492 [2018-10-10 15:37:22,766 INFO L226 Difference]: Without dead ends: 492 [2018-10-10 15:37:22,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10502 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=1678, Invalid=36934, Unknown=0, NotChecked=0, Total=38612 [2018-10-10 15:37:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2018-10-10 15:37:22,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 390. [2018-10-10 15:37:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-10-10 15:37:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 392 transitions. [2018-10-10 15:37:22,777 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 392 transitions. Word has length 318 [2018-10-10 15:37:22,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:37:22,777 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 392 transitions. [2018-10-10 15:37:22,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-10 15:37:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 392 transitions. [2018-10-10 15:37:22,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-10 15:37:22,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:37:22,780 INFO L375 BasicCegarLoop]: trace histogram [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 15:37:22,780 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:37:22,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:37:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1445009410, now seen corresponding path program 10 times [2018-10-10 15:37:22,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:37:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:37:27,119 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-10 15:37:27,303 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-10 15:37:27,696 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-10-10 15:37:27,887 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-10 15:37:28,079 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-10 15:37:28,328 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 15:37:28,632 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-10 15:37:28,838 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-10 15:37:29,040 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-10-10 15:37:29,250 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2018-10-10 15:37:29,891 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-10-10 15:37:30,952 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2018-10-10 15:37:31,330 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2018-10-10 15:37:32,556 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2018-10-10 15:37:32,826 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2018-10-10 15:37:33,114 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2018-10-10 15:37:33,401 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2018-10-10 15:37:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 5 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:37:39,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:37:39,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-10-10 15:37:39,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-10 15:37:39,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-10 15:37:39,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=10362, Unknown=0, NotChecked=0, Total=10712 [2018-10-10 15:37:39,727 INFO L87 Difference]: Start difference. First operand 390 states and 392 transitions. Second operand 104 states. [2018-10-10 15:37:42,765 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-10-10 15:37:44,070 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-10 15:37:44,430 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:37:45,105 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-10 15:37:45,468 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:37:45,815 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-10 15:37:46,196 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:37:46,777 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-10-10 15:37:47,341 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-10-10 15:37:47,957 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-10 15:37:48,385 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2018-10-10 15:37:48,776 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-10 15:37:49,073 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2018-10-10 15:37:50,040 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-10 15:37:50,303 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-10 15:37:50,629 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-10 15:37:50,992 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2018-10-10 15:37:51,440 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-10-10 15:37:52,096 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-10 15:37:52,528 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2018-10-10 15:37:53,040 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2018-10-10 15:37:53,506 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2018-10-10 15:37:53,986 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2018-10-10 15:37:54,544 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-10 15:37:55,180 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 96 [2018-10-10 15:37:55,819 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2018-10-10 15:37:56,380 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2018-10-10 15:37:57,111 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2018-10-10 15:37:57,572 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2018-10-10 15:37:58,763 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:37:59,173 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2018-10-10 15:37:59,688 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-10-10 15:38:00,389 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 114 [2018-10-10 15:38:01,156 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 123 [2018-10-10 15:38:01,893 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2018-10-10 15:38:02,519 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 114 [2018-10-10 15:38:03,144 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 120 [2018-10-10 15:38:03,785 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 121 [2018-10-10 15:38:04,497 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 125 [2018-10-10 15:38:05,161 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2018-10-10 15:38:06,053 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 126 [2018-10-10 15:38:06,882 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 94 [2018-10-10 15:38:07,781 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 138 [2018-10-10 15:38:08,816 WARN L178 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 157 [2018-10-10 15:38:09,360 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 99 [2018-10-10 15:38:10,041 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2018-10-10 15:38:10,897 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 149 [2018-10-10 15:38:11,245 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-10 15:38:11,721 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-10-10 15:38:12,301 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-10-10 15:38:12,676 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2018-10-10 15:38:13,504 WARN L178 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 153 [2018-10-10 15:38:14,075 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2018-10-10 15:38:14,930 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 175 [2018-10-10 15:38:15,524 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 92 [2018-10-10 15:38:16,239 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 156 [2018-10-10 15:38:16,988 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 106 [2018-10-10 15:38:17,583 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 134 [2018-10-10 15:38:18,609 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 142 [2018-10-10 15:38:19,109 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 102 [2018-10-10 15:38:20,303 WARN L178 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 151 [2018-10-10 15:38:21,186 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2018-10-10 15:38:21,763 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2018-10-10 15:38:22,721 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 134 [2018-10-10 15:38:23,523 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 136 [2018-10-10 15:38:24,390 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 138 [2018-10-10 15:38:25,258 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 143 [2018-10-10 15:38:26,247 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 102 [2018-10-10 15:38:27,846 WARN L178 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 143 [2018-10-10 15:38:28,350 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2018-10-10 15:38:28,955 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 102 [2018-10-10 15:38:29,248 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2018-10-10 15:38:29,578 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-10-10 15:38:30,882 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 246 DAG size of output: 181 [2018-10-10 15:38:31,077 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2018-10-10 15:38:33,013 WARN L178 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 270 DAG size of output: 200 [2018-10-10 15:38:33,642 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2018-10-10 15:38:34,494 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 165 [2018-10-10 15:38:35,936 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 262 DAG size of output: 192 [2018-10-10 15:38:37,410 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 195 [2018-10-10 15:38:38,632 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 225 [2018-10-10 15:38:39,568 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 204 [2018-10-10 15:38:40,319 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 175 [2018-10-10 15:38:40,928 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 135 [2018-10-10 15:38:41,859 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 105 [2018-10-10 15:38:43,519 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-10-10 15:38:44,040 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2018-10-10 15:38:44,492 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2018-10-10 15:38:44,937 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 119 [2018-10-10 15:38:45,327 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 109 [2018-10-10 15:38:45,629 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 87 [2018-10-10 15:38:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:46,131 INFO L93 Difference]: Finished difference Result 520 states and 522 transitions. [2018-10-10 15:38:46,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-10 15:38:46,132 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 332 [2018-10-10 15:38:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:46,136 INFO L225 Difference]: With dead ends: 520 [2018-10-10 15:38:46,136 INFO L226 Difference]: Without dead ends: 520 [2018-10-10 15:38:46,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 5 SyntacticMatches, 10 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13786 ImplicationChecksByTransitivity, 66.3s TimeCoverageRelationStatistics Valid=4935, Invalid=47277, Unknown=0, NotChecked=0, Total=52212 [2018-10-10 15:38:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2018-10-10 15:38:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 390. [2018-10-10 15:38:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-10-10 15:38:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 392 transitions. [2018-10-10 15:38:46,146 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 392 transitions. Word has length 332 [2018-10-10 15:38:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:46,147 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 392 transitions. [2018-10-10 15:38:46,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-10 15:38:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 392 transitions. [2018-10-10 15:38:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-10 15:38:46,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:46,149 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:46,149 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:46,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1506806937, now seen corresponding path program 11 times [2018-10-10 15:38:46,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:52,004 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-10 15:38:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 236 proven. 316 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-10 15:38:55,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:38:55,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-10-10 15:38:55,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-10 15:38:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-10 15:38:55,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=10320, Unknown=0, NotChecked=0, Total=10712 [2018-10-10 15:38:55,638 INFO L87 Difference]: Start difference. First operand 390 states and 392 transitions. Second operand 104 states. [2018-10-10 15:39:02,870 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2018-10-10 15:39:03,215 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-10 15:39:03,507 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:39:04,755 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-10 15:39:05,084 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-10 15:39:06,022 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-10 15:39:06,301 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-10-10 15:39:06,584 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2018-10-10 15:39:07,430 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-10 15:39:08,327 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-10 15:39:08,739 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:39:09,008 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-10 15:39:10,019 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-10 15:39:10,326 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2018-10-10 15:39:10,671 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2018-10-10 15:39:11,058 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2018-10-10 15:39:11,736 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-10 15:39:12,007 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:39:12,287 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-10-10 15:39:12,565 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2018-10-10 15:39:13,425 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2018-10-10 15:39:14,333 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-10-10 15:39:17,982 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2018-10-10 15:39:18,256 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2018-10-10 15:39:18,498 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-10 15:39:18,709 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2018-10-10 15:39:20,983 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:39:21,242 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:39:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:39:24,794 INFO L93 Difference]: Finished difference Result 483 states and 484 transitions. [2018-10-10 15:39:24,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-10 15:39:24,795 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 346 [2018-10-10 15:39:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:39:24,798 INFO L225 Difference]: With dead ends: 483 [2018-10-10 15:39:24,798 INFO L226 Difference]: Without dead ends: 366 [2018-10-10 15:39:24,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15957 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=2538, Invalid=49674, Unknown=0, NotChecked=0, Total=52212 [2018-10-10 15:39:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-10-10 15:39:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 361. [2018-10-10 15:39:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-10 15:39:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-10-10 15:39:24,805 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 346 [2018-10-10 15:39:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:39:24,806 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-10-10 15:39:24,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-10 15:39:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-10-10 15:39:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-10 15:39:24,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:39:24,808 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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 15:39:24,809 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:39:24,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:39:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash -687687088, now seen corresponding path program 12 times [2018-10-10 15:39:24,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:39:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:39:25,925 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-10 15:39:26,377 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-10 15:39:30,196 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-10-10 15:39:30,409 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:39:30,658 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2018-10-10 15:39:30,904 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-10 15:39:31,168 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-10-10 15:39:31,435 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-10-10 15:39:31,702 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-10-10 15:39:32,038 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-10 15:39:32,287 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-10 15:39:32,603 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-10 15:39:32,853 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:39:33,126 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-10 15:39:33,405 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 15:39:33,688 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 15:39:34,076 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2018-10-10 15:39:34,538 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-10-10 15:39:35,200 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2018-10-10 15:39:35,464 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2018-10-10 15:39:35,736 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-10 15:39:36,001 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:39:36,285 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:39:36,559 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:39:36,846 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 15:39:37,279 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-10 15:39:37,610 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-10-10 15:39:37,950 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-10-10 15:39:38,297 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2018-10-10 15:39:38,823 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 15:39:39,260 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-10-10 15:39:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:39:45,054 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:39:45,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-10-10 15:39:45,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-10 15:39:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-10 15:39:45,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=10959, Unknown=0, NotChecked=0, Total=11342 [2018-10-10 15:39:45,055 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 107 states. [2018-10-10 15:39:53,518 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:39:53,852 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:39:54,100 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-10 15:39:54,375 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:39:55,449 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-10-10 15:39:55,798 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-10 15:39:56,232 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2018-10-10 15:39:56,695 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2018-10-10 15:39:57,557 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-10 15:39:57,912 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:39:58,275 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2018-10-10 15:39:58,656 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-10 15:39:59,846 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2018-10-10 15:40:00,491 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-10 15:40:01,043 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2018-10-10 15:40:01,539 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-10 15:40:01,995 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2018-10-10 15:40:02,435 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2018-10-10 15:40:03,557 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2018-10-10 15:40:03,917 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2018-10-10 15:40:04,540 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2018-10-10 15:40:05,344 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2018-10-10 15:40:06,144 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 114 [2018-10-10 15:40:07,145 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2018-10-10 15:40:07,586 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2018-10-10 15:40:08,015 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 85 [2018-10-10 15:40:08,584 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2018-10-10 15:40:09,175 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2018-10-10 15:40:10,071 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 99 [2018-10-10 15:40:10,781 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2018-10-10 15:40:11,467 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2018-10-10 15:40:12,121 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 134 [2018-10-10 15:40:12,662 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2018-10-10 15:40:13,382 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-10-10 15:40:13,749 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-10 15:40:14,031 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-10 15:40:14,434 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-10 15:40:15,043 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2018-10-10 15:40:15,761 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 114 [2018-10-10 15:40:16,562 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 116 [2018-10-10 15:40:17,182 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-10 15:40:17,680 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 96 [2018-10-10 15:40:18,176 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 104 [2018-10-10 15:40:18,644 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2018-10-10 15:40:19,305 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2018-10-10 15:40:20,052 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 105 [2018-10-10 15:40:20,766 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2018-10-10 15:40:21,483 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 141 [2018-10-10 15:40:22,002 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-10 15:40:22,425 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-10 15:40:22,923 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 136 [2018-10-10 15:40:23,817 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2018-10-10 15:40:24,492 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2018-10-10 15:40:25,173 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2018-10-10 15:40:25,677 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-10 15:40:26,132 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2018-10-10 15:40:26,718 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:40:27,424 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:40:28,081 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2018-10-10 15:40:28,769 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2018-10-10 15:40:29,315 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 129 [2018-10-10 15:40:29,643 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 15:40:29,851 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-10 15:40:31,945 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:40:32,258 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2018-10-10 15:40:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:34,914 INFO L93 Difference]: Finished difference Result 562 states and 564 transitions. [2018-10-10 15:40:34,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-10 15:40:34,915 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 360 [2018-10-10 15:40:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:34,918 INFO L225 Difference]: With dead ends: 562 [2018-10-10 15:40:34,918 INFO L226 Difference]: Without dead ends: 562 [2018-10-10 15:40:34,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15996 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=2163, Invalid=52359, Unknown=0, NotChecked=0, Total=54522 [2018-10-10 15:40:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2018-10-10 15:40:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 432. [2018-10-10 15:40:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-10 15:40:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 434 transitions. [2018-10-10 15:40:34,928 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 434 transitions. Word has length 360 [2018-10-10 15:40:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:34,928 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 434 transitions. [2018-10-10 15:40:34,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-10 15:40:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 434 transitions. [2018-10-10 15:40:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-10 15:40:34,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:34,931 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:34,931 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:34,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:34,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1364523934, now seen corresponding path program 13 times [2018-10-10 15:40:34,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:36,367 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-10 15:40:40,529 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-10-10 15:40:40,750 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-10-10 15:40:41,508 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-10 15:40:41,832 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-10 15:40:42,196 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-10 15:40:42,533 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 15:40:42,884 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-10-10 15:40:43,194 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2018-10-10 15:40:43,546 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-10 15:40:43,935 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2018-10-10 15:40:44,376 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2018-10-10 15:40:44,609 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2018-10-10 15:40:44,922 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-10-10 15:40:45,348 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-10 15:40:45,840 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-10 15:40:46,295 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-10 15:40:46,802 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:40:47,335 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-10 15:40:47,830 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-10 15:40:48,293 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-10 15:40:48,865 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-10-10 15:40:49,382 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-10 15:40:49,942 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-10 15:40:50,386 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2018-10-10 15:40:50,875 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-10 15:40:51,352 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-10 15:40:51,905 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2018-10-10 15:40:52,503 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2018-10-10 15:40:52,841 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2018-10-10 15:40:53,211 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2018-10-10 15:40:53,472 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2018-10-10 15:40:53,779 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2018-10-10 15:40:54,091 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2018-10-10 15:40:54,366 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-10-10 15:40:54,651 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2018-10-10 15:40:55,417 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-10-10 15:40:55,960 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2018-10-10 15:41:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:03,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:03,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-10-10 15:41:03,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-10 15:41:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-10 15:41:03,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=12508, Unknown=0, NotChecked=0, Total=12882 [2018-10-10 15:41:03,380 INFO L87 Difference]: Start difference. First operand 432 states and 434 transitions. Second operand 114 states. [2018-10-10 15:41:09,706 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-10 15:41:10,049 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-10 15:41:10,441 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-10 15:41:11,463 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-10 15:41:13,471 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:41:14,648 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2018-10-10 15:41:15,128 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2018-10-10 15:41:15,523 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2018-10-10 15:41:15,884 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-10 15:41:17,204 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:41:17,558 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:41:17,977 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2018-10-10 15:41:18,453 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2018-10-10 15:41:19,438 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-10 15:41:19,801 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-10 15:41:20,159 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-10 15:41:20,546 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2018-10-10 15:41:21,790 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-10 15:41:23,041 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-10-10 15:41:23,545 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2018-10-10 15:41:23,937 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2018-10-10 15:41:25,131 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-10 15:41:25,491 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:41:25,946 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-10 15:41:26,606 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2018-10-10 15:41:27,423 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2018-10-10 15:41:27,982 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2018-10-10 15:41:28,778 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2018-10-10 15:41:29,239 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2018-10-10 15:41:29,742 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2018-10-10 15:41:30,473 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2018-10-10 15:41:31,324 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 91 [2018-10-10 15:41:32,249 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-10 15:41:32,965 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2018-10-10 15:41:33,673 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 125 [2018-10-10 15:41:34,316 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 127 [2018-10-10 15:41:34,932 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 122 [2018-10-10 15:41:35,470 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2018-10-10 15:41:35,798 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2018-10-10 15:41:36,058 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2018-10-10 15:41:36,696 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:41:37,516 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 81 [2018-10-10 15:41:38,453 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 97 [2018-10-10 15:41:39,871 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 183 DAG size of output: 137 [2018-10-10 15:41:41,426 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 232 DAG size of output: 155 [2018-10-10 15:41:43,197 WARN L178 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 234 DAG size of output: 157 [2018-10-10 15:41:44,094 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2018-10-10 15:41:44,999 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 126 [2018-10-10 15:41:45,731 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 126 [2018-10-10 15:41:46,425 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 122 [2018-10-10 15:41:47,379 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2018-10-10 15:41:48,316 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 122 [2018-10-10 15:41:49,212 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2018-10-10 15:41:50,157 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 144 [2018-10-10 15:41:50,865 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2018-10-10 15:41:51,538 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2018-10-10 15:41:52,309 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 139 [2018-10-10 15:41:53,566 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 161 [2018-10-10 15:41:54,504 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2018-10-10 15:41:55,380 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 182 [2018-10-10 15:41:56,033 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 152 [2018-10-10 15:41:56,424 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-10-10 15:41:57,001 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-10 15:41:58,754 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 15:41:59,119 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:41:59,484 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 15:41:59,715 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 15:42:01,643 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 15:42:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:09,319 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2018-10-10 15:42:09,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-10 15:42:09,320 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 388 [2018-10-10 15:42:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:09,323 INFO L225 Difference]: With dead ends: 590 [2018-10-10 15:42:09,324 INFO L226 Difference]: Without dead ends: 590 [2018-10-10 15:42:09,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 3 SyntacticMatches, 13 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17767 ImplicationChecksByTransitivity, 67.4s TimeCoverageRelationStatistics Valid=1983, Invalid=58779, Unknown=0, NotChecked=0, Total=60762 [2018-10-10 15:42:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2018-10-10 15:42:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 460. [2018-10-10 15:42:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-10-10 15:42:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 462 transitions. [2018-10-10 15:42:09,336 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 462 transitions. Word has length 388 [2018-10-10 15:42:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:09,336 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 462 transitions. [2018-10-10 15:42:09,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-10 15:42:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 462 transitions. [2018-10-10 15:42:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-10 15:42:09,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:09,339 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:09,340 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:09,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash -251495275, now seen corresponding path program 14 times [2018-10-10 15:42:09,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:14,859 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-10 15:42:17,531 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-10 15:42:17,828 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2018-10-10 15:42:18,138 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-10 15:42:18,394 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-10 15:42:18,652 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-10 15:42:18,916 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-10 15:42:19,352 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-10 15:42:19,741 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54