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/merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:05:11,631 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:05:11,633 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:05:11,649 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:05:11,650 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:05:11,651 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:05:11,652 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:05:11,654 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:05:11,656 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:05:11,656 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:05:11,657 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 21:05:11,698 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:05:11,708 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:05:11,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:05:11,712 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:05:11,712 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:05:11,712 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:05:11,713 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:05:11,713 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:05:11,714 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:05:11,714 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:05:11,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:05:11,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:05:11,714 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:05:11,715 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:05:11,716 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:05:11,716 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:05:11,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:05:11,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:05:11,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:05:11,785 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:05:11,785 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:05:11,786 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl [2018-10-12 21:05:11,787 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl' [2018-10-12 21:05:11,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:05:11,878 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:05:11,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:05:11,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:05:11,879 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:05:11,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/1) ... [2018-10-12 21:05:11,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:05:11,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:05:11,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:05:11,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:05:11,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (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 [2018-10-12 21:05:12,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:05:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:05:12,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:05:13,018 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:05:13,019 INFO L202 PluginConnector]: Adding new model merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:05:13 BoogieIcfgContainer [2018-10-12 21:05:13,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:05:13,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:05:13,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:05:13,024 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:05:13,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:05:11" (1/2) ... [2018-10-12 21:05:13,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21afa24b and model type merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:05:13, skipping insertion in model container [2018-10-12 21:05:13,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:05:13" (2/2) ... [2018-10-12 21:05:13,028 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl [2018-10-12 21:05:13,038 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:05:13,049 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:05:13,067 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:05:13,096 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:05:13,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:05:13,097 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:05:13,098 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:05:13,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:05:13,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:05:13,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:05:13,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:05:13,098 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:05:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2018-10-12 21:05:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-12 21:05:13,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:13,132 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:05:13,133 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:13,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:13,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1440752284, now seen corresponding path program 1 times [2018-10-12 21:05:13,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:05:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:05:13,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:05:13,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 21:05:13,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 21:05:13,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 21:05:13,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 21:05:13,424 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2018-10-12 21:05:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:05:13,533 INFO L93 Difference]: Finished difference Result 200 states and 201 transitions. [2018-10-12 21:05:13,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 21:05:13,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-12 21:05:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:05:13,550 INFO L225 Difference]: With dead ends: 200 [2018-10-12 21:05:13,550 INFO L226 Difference]: Without dead ends: 198 [2018-10-12 21:05:13,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 21:05:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-12 21:05:13,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 138. [2018-10-12 21:05:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-12 21:05:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-10-12 21:05:13,614 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 17 [2018-10-12 21:05:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:05:13,615 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-10-12 21:05:13,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 21:05:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-10-12 21:05:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-12 21:05:13,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:13,618 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:05:13,618 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:13,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1358240742, now seen corresponding path program 1 times [2018-10-12 21:05:13,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:05:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:05:14,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:05:14,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 21:05:14,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 21:05:14,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 21:05:14,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 21:05:14,051 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 9 states. [2018-10-12 21:05:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:05:15,307 INFO L93 Difference]: Finished difference Result 202 states and 203 transitions. [2018-10-12 21:05:15,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 21:05:15,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2018-10-12 21:05:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:05:15,311 INFO L225 Difference]: With dead ends: 202 [2018-10-12 21:05:15,311 INFO L226 Difference]: Without dead ends: 202 [2018-10-12 21:05:15,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-10-12 21:05:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-12 21:05:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2018-10-12 21:05:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-12 21:05:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2018-10-12 21:05:15,329 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 79 [2018-10-12 21:05:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:05:15,330 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2018-10-12 21:05:15,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 21:05:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2018-10-12 21:05:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-12 21:05:15,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:15,336 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:05:15,336 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:15,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:15,337 INFO L82 PathProgramCache]: Analyzing trace with hash 467065079, now seen corresponding path program 1 times [2018-10-12 21:05:15,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:05:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:05:16,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:05:16,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-12 21:05:16,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-12 21:05:16,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-12 21:05:16,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2018-10-12 21:05:16,618 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand 19 states. [2018-10-12 21:05:17,815 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-12 21:05:18,030 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-10-12 21:05:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:05:18,494 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-10-12 21:05:18,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-12 21:05:18,495 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 139 [2018-10-12 21:05:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:05:18,499 INFO L225 Difference]: With dead ends: 237 [2018-10-12 21:05:18,499 INFO L226 Difference]: Without dead ends: 222 [2018-10-12 21:05:18,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2018-10-12 21:05:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-12 21:05:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 202. [2018-10-12 21:05:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-12 21:05:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2018-10-12 21:05:18,534 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 139 [2018-10-12 21:05:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:05:18,537 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2018-10-12 21:05:18,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-12 21:05:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2018-10-12 21:05:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-12 21:05:18,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:18,547 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:05:18,547 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:18,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1690746835, now seen corresponding path program 2 times [2018-10-12 21:05:18,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:05:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:05:20,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:05:20,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-12 21:05:20,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-12 21:05:20,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-12 21:05:20,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2018-10-12 21:05:20,037 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 28 states. [2018-10-12 21:05:23,475 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-12 21:05:23,661 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 21:05:23,854 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-12 21:05:24,108 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 21:05:24,346 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-12 21:05:24,576 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-12 21:05:24,761 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 21:05:24,925 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-12 21:05:25,254 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-12 21:05:25,448 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-12 21:05:25,616 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:05:25,827 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 21:05:26,022 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 21:05:26,845 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 21:05:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:05:26,876 INFO L93 Difference]: Finished difference Result 324 states and 325 transitions. [2018-10-12 21:05:26,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-12 21:05:26,880 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 201 [2018-10-12 21:05:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:05:26,883 INFO L225 Difference]: With dead ends: 324 [2018-10-12 21:05:26,883 INFO L226 Difference]: Without dead ends: 324 [2018-10-12 21:05:26,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2018-10-12 21:05:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-12 21:05:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 262. [2018-10-12 21:05:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-12 21:05:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2018-10-12 21:05:26,897 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 201 [2018-10-12 21:05:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:05:26,898 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2018-10-12 21:05:26,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-12 21:05:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2018-10-12 21:05:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-12 21:05:26,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:26,903 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-12 21:05:26,903 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:26,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash -76669302, now seen corresponding path program 3 times [2018-10-12 21:05:26,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:05:27,892 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-12 21:05:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 30 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:05:31,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:05:31,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-12 21:05:31,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-12 21:05:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-12 21:05:31,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1940, Unknown=0, NotChecked=0, Total=2070 [2018-10-12 21:05:31,267 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 46 states. [2018-10-12 21:05:33,865 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2018-10-12 21:05:35,693 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 21:05:38,097 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-12 21:05:38,607 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2018-10-12 21:05:38,865 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2018-10-12 21:05:39,068 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-12 21:05:39,293 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2018-10-12 21:05:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:05:39,359 INFO L93 Difference]: Finished difference Result 419 states and 420 transitions. [2018-10-12 21:05:39,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-12 21:05:39,360 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 261 [2018-10-12 21:05:39,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:05:39,364 INFO L225 Difference]: With dead ends: 419 [2018-10-12 21:05:39,364 INFO L226 Difference]: Without dead ends: 344 [2018-10-12 21:05:39,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 4 SyntacticMatches, 13 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=702, Invalid=7670, Unknown=0, NotChecked=0, Total=8372 [2018-10-12 21:05:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-10-12 21:05:39,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 324. [2018-10-12 21:05:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-12 21:05:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 325 transitions. [2018-10-12 21:05:39,377 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 325 transitions. Word has length 261 [2018-10-12 21:05:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:05:39,378 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 325 transitions. [2018-10-12 21:05:39,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-12 21:05:39,378 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 325 transitions. [2018-10-12 21:05:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-12 21:05:39,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:39,385 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-12 21:05:39,385 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:39,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:39,386 INFO L82 PathProgramCache]: Analyzing trace with hash -68008384, now seen corresponding path program 4 times [2018-10-12 21:05:39,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:05:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 97 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:05:45,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:05:45,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-12 21:05:45,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-12 21:05:45,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-12 21:05:45,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=4101, Unknown=0, NotChecked=0, Total=4290 [2018-10-12 21:05:45,399 INFO L87 Difference]: Start difference. First operand 324 states and 325 transitions. Second operand 66 states. [2018-10-12 21:05:51,336 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-12 21:05:51,773 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-12 21:05:53,349 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-12 21:05:54,611 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-12 21:05:55,668 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-12 21:05:55,938 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-12 21:05:56,236 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-12 21:05:56,685 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-12 21:05:56,976 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-12 21:05:57,251 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-12 21:05:57,587 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2018-10-12 21:05:58,006 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-12 21:05:58,413 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2018-10-12 21:05:58,695 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2018-10-12 21:05:59,017 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2018-10-12 21:05:59,388 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2018-10-12 21:05:59,656 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-12 21:06:00,114 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2018-10-12 21:06:00,610 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2018-10-12 21:06:01,596 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 121 [2018-10-12 21:06:02,072 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 123 [2018-10-12 21:06:02,687 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2018-10-12 21:06:03,213 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 124 [2018-10-12 21:06:03,957 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 129 [2018-10-12 21:06:04,486 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 124 [2018-10-12 21:06:04,902 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2018-10-12 21:06:05,491 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2018-10-12 21:06:05,936 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2018-10-12 21:06:06,529 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 137 [2018-10-12 21:06:07,111 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2018-10-12 21:06:07,612 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 141 [2018-10-12 21:06:08,032 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 132 [2018-10-12 21:06:08,489 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 124 [2018-10-12 21:06:08,943 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 124 [2018-10-12 21:06:09,433 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 115 [2018-10-12 21:06:09,850 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 118 [2018-10-12 21:06:10,570 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 115 [2018-10-12 21:06:11,071 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 112 [2018-10-12 21:06:11,749 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2018-10-12 21:06:12,713 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 121 [2018-10-12 21:06:13,115 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2018-10-12 21:06:13,459 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2018-10-12 21:06:13,881 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2018-10-12 21:06:14,382 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2018-10-12 21:06:14,929 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-12 21:06:15,348 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-12 21:06:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:06:15,405 INFO L93 Difference]: Finished difference Result 446 states and 447 transitions. [2018-10-12 21:06:15,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-12 21:06:15,407 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 323 [2018-10-12 21:06:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:06:15,410 INFO L225 Difference]: With dead ends: 446 [2018-10-12 21:06:15,410 INFO L226 Difference]: Without dead ends: 446 [2018-10-12 21:06:15,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 12 SyntacticMatches, 17 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=3153, Invalid=19197, Unknown=0, NotChecked=0, Total=22350 [2018-10-12 21:06:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2018-10-12 21:06:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 384. [2018-10-12 21:06:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-10-12 21:06:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2018-10-12 21:06:15,425 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 323 [2018-10-12 21:06:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:06:15,426 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2018-10-12 21:06:15,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-12 21:06:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2018-10-12 21:06:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-12 21:06:15,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:06:15,431 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-12 21:06:15,431 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:06:15,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:06:15,432 INFO L82 PathProgramCache]: Analyzing trace with hash -249229795, now seen corresponding path program 5 times [2018-10-12 21:06:15,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:06:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:21,390 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-10-12 21:06:22,112 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2018-10-12 21:06:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 66 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:06:28,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:06:28,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-10-12 21:06:28,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-12 21:06:28,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-12 21:06:28,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=7756, Unknown=0, NotChecked=0, Total=8010 [2018-10-12 21:06:28,563 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand 90 states. [2018-10-12 21:06:32,403 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-12 21:06:36,656 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-12 21:06:37,681 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-12 21:06:38,451 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-12 21:06:38,719 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-12 21:06:39,004 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-12 21:06:39,642 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2018-10-12 21:06:40,071 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2018-10-12 21:06:40,382 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-12 21:06:40,828 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2018-10-12 21:06:41,322 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 88 [2018-10-12 21:06:42,030 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-12 21:06:42,424 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-12 21:06:43,120 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2018-10-12 21:06:43,379 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2018-10-12 21:06:43,668 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-12 21:06:43,924 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 21:06:44,385 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-12 21:06:44,882 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-10-12 21:06:45,561 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2018-10-12 21:06:46,269 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 114 [2018-10-12 21:06:47,100 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2018-10-12 21:06:47,427 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-12 21:06:47,941 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 109 [2018-10-12 21:06:48,510 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-12 21:06:49,070 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 134 [2018-10-12 21:06:49,493 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-12 21:06:49,954 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-12 21:06:50,402 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:06:51,043 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:06:51,925 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 21:06:53,743 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 189 [2018-10-12 21:06:54,596 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 168 [2018-10-12 21:06:55,237 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 171 [2018-10-12 21:06:56,434 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 174 [2018-10-12 21:06:57,098 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 170 [2018-10-12 21:06:58,041 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2018-10-12 21:06:58,669 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2018-10-12 21:06:59,728 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-12 21:07:00,587 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 220 [2018-10-12 21:07:01,321 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 199 [2018-10-12 21:07:02,023 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 180 [2018-10-12 21:07:02,649 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 21:07:03,370 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 175 [2018-10-12 21:07:04,077 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 177 [2018-10-12 21:07:05,622 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 174 [2018-10-12 21:07:06,595 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2018-10-12 21:07:07,431 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-12 21:07:08,838 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 191 [2018-10-12 21:07:09,327 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 21:07:09,707 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 21:07:10,331 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 174 [2018-10-12 21:07:11,119 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 158 [2018-10-12 21:07:11,742 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 164 [2018-10-12 21:07:12,351 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 170 [2018-10-12 21:07:12,704 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 21:07:13,413 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-12 21:07:14,072 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:07:14,478 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 21:07:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:07:14,500 INFO L93 Difference]: Finished difference Result 622 states and 623 transitions. [2018-10-12 21:07:14,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-12 21:07:14,502 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 383 [2018-10-12 21:07:14,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:07:14,505 INFO L225 Difference]: With dead ends: 622 [2018-10-12 21:07:14,505 INFO L226 Difference]: Without dead ends: 466 [2018-10-12 21:07:14,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 2 SyntacticMatches, 15 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8954 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=1553, Invalid=32487, Unknown=0, NotChecked=0, Total=34040 [2018-10-12 21:07:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-10-12 21:07:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 446. [2018-10-12 21:07:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-10-12 21:07:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 447 transitions. [2018-10-12 21:07:14,520 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 447 transitions. Word has length 383 [2018-10-12 21:07:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:07:14,521 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 447 transitions. [2018-10-12 21:07:14,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-12 21:07:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 447 transitions. [2018-10-12 21:07:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-10-12 21:07:14,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:07:14,524 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, 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, 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] [2018-10-12 21:07:14,525 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:07:14,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:07:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1522357843, now seen corresponding path program 6 times [2018-10-12 21:07:14,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:07:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:07:20,528 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2018-10-12 21:07:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 108 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:07:28,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:07:28,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-10-12 21:07:28,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-12 21:07:28,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-12 21:07:28,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=10814, Unknown=0, NotChecked=0, Total=11130 [2018-10-12 21:07:28,745 INFO L87 Difference]: Start difference. First operand 446 states and 447 transitions. Second operand 106 states. [2018-10-12 21:07:37,738 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-12 21:07:38,052 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2018-10-12 21:07:38,271 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-12 21:07:40,216 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-12 21:07:43,558 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-12 21:07:43,956 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-12 21:07:44,553 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-10-12 21:07:44,917 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 21:07:45,255 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-12 21:07:45,672 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-12 21:07:46,314 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:07:46,811 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-12 21:07:47,230 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2018-10-12 21:07:47,688 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2018-10-12 21:07:48,070 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 91 [2018-10-12 21:07:48,714 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-10-12 21:07:48,984 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2018-10-12 21:07:49,493 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:07:49,862 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2018-10-12 21:07:50,350 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2018-10-12 21:07:50,928 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2018-10-12 21:07:51,513 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-12 21:07:52,006 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 79 [2018-10-12 21:07:52,602 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2018-10-12 21:07:53,536 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2018-10-12 21:07:53,950 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2018-10-12 21:07:54,701 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2018-10-12 21:07:55,139 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 63 [2018-10-12 21:07:56,045 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 108 [2018-10-12 21:07:56,944 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 126 [2018-10-12 21:07:57,753 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2018-10-12 21:07:58,530 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 136 [2018-10-12 21:07:59,077 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 109 [2018-10-12 21:07:59,832 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 147 [2018-10-12 21:08:00,667 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2018-10-12 21:08:01,554 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 171 [2018-10-12 21:08:02,237 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 151 [2018-10-12 21:08:03,004 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 159 [2018-10-12 21:08:03,912 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 183 [2018-10-12 21:08:04,655 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 154 [2018-10-12 21:08:05,772 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 215 [2018-10-12 21:08:06,956 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 218 [2018-10-12 21:08:09,083 WARN L178 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 229 [2018-10-12 21:08:10,295 WARN L178 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 231 [2018-10-12 21:08:11,782 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 242 [2018-10-12 21:08:13,110 WARN L178 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 240 [2018-10-12 21:08:14,927 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 287 DAG size of output: 253 [2018-10-12 21:08:16,258 WARN L178 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 248 [2018-10-12 21:08:17,491 WARN L178 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 228 [2018-10-12 21:08:18,830 WARN L178 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 224 [2018-10-12 21:08:20,052 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 220 [2018-10-12 21:08:21,278 WARN L178 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 242 [2018-10-12 21:08:22,525 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 244 [2018-10-12 21:08:24,178 WARN L178 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 267 [2018-10-12 21:08:25,735 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 331 DAG size of output: 290 [2018-10-12 21:08:27,099 WARN L178 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 281 [2018-10-12 21:08:28,267 WARN L178 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 258 [2018-10-12 21:08:29,410 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 235 [2018-10-12 21:08:30,640 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2018-10-12 21:08:31,829 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 215 [2018-10-12 21:08:32,921 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 219 [2018-10-12 21:08:34,000 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 219 [2018-10-12 21:08:35,904 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 218 [2018-10-12 21:08:37,214 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 216 [2018-10-12 21:08:38,299 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 219 [2018-10-12 21:08:40,072 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 222 [2018-10-12 21:08:41,279 WARN L178 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 217 [2018-10-12 21:08:42,241 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 209 [2018-10-12 21:08:43,663 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 211 [2018-10-12 21:08:45,138 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 228 [2018-10-12 21:08:46,423 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 243 [2018-10-12 21:08:47,588 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 249 [2018-10-12 21:08:48,588 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 234 [2018-10-12 21:08:49,646 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 223 [2018-10-12 21:08:50,707 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 219 [2018-10-12 21:08:51,807 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 204 [2018-10-12 21:08:52,935 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 201 [2018-10-12 21:08:54,313 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 208 [2018-10-12 21:08:55,284 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 210 [2018-10-12 21:08:56,562 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 216 [2018-10-12 21:08:57,629 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 222 [2018-10-12 21:08:58,510 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 194 [2018-10-12 21:08:59,402 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 191 [2018-10-12 21:09:01,215 WARN L178 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 199 [2018-10-12 21:09:02,184 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 201 [2018-10-12 21:09:03,386 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 204 [2018-10-12 21:09:04,369 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 207 [2018-10-12 21:09:05,311 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 200 [2018-10-12 21:09:06,196 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 197 [2018-10-12 21:09:07,089 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 192 [2018-10-12 21:09:08,235 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 189 [2018-10-12 21:09:09,250 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 186 [2018-10-12 21:09:10,299 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 186 [2018-10-12 21:09:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:10,406 INFO L93 Difference]: Finished difference Result 568 states and 569 transitions. [2018-10-12 21:09:10,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-12 21:09:10,407 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 445 [2018-10-12 21:09:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:10,410 INFO L225 Difference]: With dead ends: 568 [2018-10-12 21:09:10,411 INFO L226 Difference]: Without dead ends: 568 [2018-10-12 21:09:10,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 16 SyntacticMatches, 14 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13834 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=6633, Invalid=50727, Unknown=0, NotChecked=0, Total=57360 [2018-10-12 21:09:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-12 21:09:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 506. [2018-10-12 21:09:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2018-10-12 21:09:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2018-10-12 21:09:10,424 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 445 [2018-10-12 21:09:10,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:10,424 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2018-10-12 21:09:10,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-12 21:09:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2018-10-12 21:09:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-10-12 21:09:10,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:10,429 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-12 21:09:10,429 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:10,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:10,430 INFO L82 PathProgramCache]: Analyzing trace with hash -969734224, now seen corresponding path program 7 times [2018-10-12 21:09:10,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:12,430 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-12 21:09:12,661 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:09:12,926 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:09:18,931 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2018-10-12 21:09:19,192 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-12 21:09:19,494 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-12 21:09:19,765 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-12 21:09:20,052 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 21:09:20,333 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 21:09:20,638 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-12 21:09:20,941 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-12 21:09:21,324 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 21:09:21,859 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:09:22,230 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-12 21:09:22,573 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 21:09:22,935 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-12 21:09:23,373 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-12 21:09:23,728 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-10-12 21:09:24,053 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-12 21:09:24,397 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-12 21:09:24,772 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:09:25,320 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-12 21:09:25,647 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-12 21:09:25,989 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-12 21:09:26,378 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-12 21:09:28,383 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-10-12 21:09:28,793 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-12 21:09:29,163 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-12 21:09:29,558 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-12 21:09:30,571 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-12 21:09:31,578 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-10-12 21:09:35,167 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-12 21:09:35,586 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-10-12 21:09:36,019 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-10-12 21:09:36,501 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-10-12 21:09:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:46,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:46,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-10-12 21:09:46,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-12 21:09:46,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-12 21:09:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=19069, Unknown=0, NotChecked=0, Total=19460 [2018-10-12 21:09:46,993 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand 140 states. [2018-10-12 21:10:01,673 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-12 21:10:02,997 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 21:10:03,462 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:10:03,926 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-12 21:10:05,690 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-12 21:10:06,265 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-12 21:10:06,767 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-12 21:10:08,065 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-12 21:10:09,138 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:10:10,444 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2018-10-12 21:10:11,095 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2018-10-12 21:10:11,738 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 95 [2018-10-12 21:10:12,755 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-12 21:10:13,386 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2018-10-12 21:10:13,962 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-10-12 21:10:14,641 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 122 [2018-10-12 21:10:15,643 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2018-10-12 21:10:16,506 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2018-10-12 21:10:17,204 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-12 21:10:18,027 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-12 21:10:18,524 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 21:10:18,994 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 21:10:19,338 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 21:10:19,819 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:10:20,471 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 21:10:21,080 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2018-10-12 21:10:21,974 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2018-10-12 21:10:23,057 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 144 [2018-10-12 21:10:24,651 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2018-10-12 21:10:25,405 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2018-10-12 21:10:26,338 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 106 [2018-10-12 21:10:28,001 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 113 [2018-10-12 21:10:28,535 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-12 21:10:29,029 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-10-12 21:10:29,508 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-12 21:10:30,392 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2018-10-12 21:10:31,140 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 91 [2018-10-12 21:10:32,281 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 136 [2018-10-12 21:10:33,792 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 194 DAG size of output: 163 [2018-10-12 21:10:34,922 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2018-10-12 21:10:35,988 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-12 21:10:37,041 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 152 [2018-10-12 21:10:38,508 WARN L178 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2018-10-12 21:10:39,965 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2018-10-12 21:10:41,635 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 255 DAG size of output: 253 [2018-10-12 21:10:42,403 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-12 21:10:43,638 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-12 21:10:44,922 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2018-10-12 21:10:46,471 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2018-10-12 21:10:47,708 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2018-10-12 21:10:49,787 WARN L178 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2018-10-12 21:10:50,331 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-12 21:10:52,459 WARN L178 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2018-10-12 21:10:55,931 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 353 DAG size of output: 352 [2018-10-12 21:10:58,050 WARN L178 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 357 DAG size of output: 356 [2018-10-12 21:11:00,296 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 315 DAG size of output: 314 [2018-10-12 21:11:02,332 WARN L178 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 333 DAG size of output: 332 [2018-10-12 21:11:04,590 WARN L178 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 329 DAG size of output: 328 [2018-10-12 21:11:07,609 WARN L178 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 347 DAG size of output: 346 [2018-10-12 21:11:09,866 WARN L178 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 335 DAG size of output: 334 [2018-10-12 21:11:12,067 WARN L178 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 339 DAG size of output: 338 [2018-10-12 21:11:14,487 WARN L178 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2018-10-12 21:11:16,414 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 311 DAG size of output: 310 [2018-10-12 21:11:18,921 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 424 [2018-10-12 21:11:20,411 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2018-10-12 21:11:21,582 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2018-10-12 21:11:23,383 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 369 DAG size of output: 324 [2018-10-12 21:11:25,335 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 417 DAG size of output: 329 [2018-10-12 21:11:27,338 WARN L178 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 287 [2018-10-12 21:11:29,014 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 377 DAG size of output: 289 [2018-10-12 21:11:31,276 WARN L178 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 382 DAG size of output: 301 [2018-10-12 21:11:35,086 WARN L178 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 341 DAG size of output: 321 [2018-10-12 21:11:37,766 WARN L178 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 328 DAG size of output: 319 [2018-10-12 21:11:39,607 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 337 DAG size of output: 328 [2018-10-12 21:11:42,626 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 346 DAG size of output: 336 [2018-10-12 21:11:44,472 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 340 DAG size of output: 330 [2018-10-12 21:11:46,341 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 342 DAG size of output: 332 [2018-10-12 21:11:48,461 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 333 DAG size of output: 324 [2018-10-12 21:11:50,409 WARN L178 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 341 DAG size of output: 331 [2018-10-12 21:11:52,379 WARN L178 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 349 DAG size of output: 338 [2018-10-12 21:11:54,040 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 316 DAG size of output: 310 [2018-10-12 21:11:55,910 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 378 DAG size of output: 316 [2018-10-12 21:11:59,111 WARN L178 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 420 DAG size of output: 347 [2018-10-12 21:12:01,999 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 451 DAG size of output: 378 [2018-10-12 21:12:03,309 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2018-10-12 21:12:04,355 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2018-10-12 21:12:06,062 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 330 DAG size of output: 305 [2018-10-12 21:12:07,763 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 353 DAG size of output: 308 [2018-10-12 21:12:09,583 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 275 [2018-10-12 21:12:11,179 WARN L178 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 278 [2018-10-12 21:12:12,769 WARN L178 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 282 [2018-10-12 21:12:14,611 WARN L178 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 277 [2018-10-12 21:12:17,233 WARN L178 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 289 [2018-10-12 21:12:18,840 WARN L178 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 291 [2018-10-12 21:12:20,795 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 300 DAG size of output: 280 [2018-10-12 21:12:22,410 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 306 DAG size of output: 286 [2018-10-12 21:12:24,099 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 312 DAG size of output: 292 [2018-10-12 21:12:25,600 WARN L178 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 271 [2018-10-12 21:12:27,060 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 268 [2018-10-12 21:12:30,342 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 325 DAG size of output: 296 [2018-10-12 21:12:32,011 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 327 DAG size of output: 295 [2018-10-12 21:12:34,341 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 359 DAG size of output: 316 [2018-10-12 21:12:36,414 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 379 DAG size of output: 336 [2018-10-12 21:12:37,555 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-12 21:12:38,516 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2018-10-12 21:12:40,031 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 286 [2018-10-12 21:12:41,591 WARN L178 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 288 [2018-10-12 21:12:43,356 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 268 [2018-10-12 21:12:44,829 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 274 [2018-10-12 21:12:46,449 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 286 DAG size of output: 281 [2018-10-12 21:12:47,819 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 253 [2018-10-12 21:12:49,308 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-12 21:12:51,616 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 266 [2018-10-12 21:12:53,076 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 268 [2018-10-12 21:12:55,074 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 274 [2018-10-12 21:12:56,707 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 289 DAG size of output: 280 [2018-10-12 21:12:58,116 WARN L178 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 248 [2018-10-12 21:12:59,470 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 245 [2018-10-12 21:13:01,028 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-12 21:13:01,979 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-12 21:13:03,531 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-10-12 21:13:04,468 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2018-10-12 21:13:05,869 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2018-10-12 21:13:06,906 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-12 21:13:07,827 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-12 21:13:08,611 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-10-12 21:13:09,539 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-12 21:13:11,013 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-12 21:13:12,144 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-12 21:13:13,303 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-12 21:13:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:13:13,421 INFO L93 Difference]: Finished difference Result 955 states and 957 transitions. [2018-10-12 21:13:13,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-12 21:13:13,422 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 505 [2018-10-12 21:13:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:13:13,426 INFO L225 Difference]: With dead ends: 955 [2018-10-12 21:13:13,426 INFO L226 Difference]: Without dead ends: 955 [2018-10-12 21:13:13,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 6 SyntacticMatches, 12 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23679 ImplicationChecksByTransitivity, 183.1s TimeCoverageRelationStatistics Valid=3011, Invalid=90319, Unknown=0, NotChecked=0, Total=93330 [2018-10-12 21:13:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2018-10-12 21:13:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 634. [2018-10-12 21:13:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2018-10-12 21:13:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 636 transitions. [2018-10-12 21:13:13,443 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 636 transitions. Word has length 505 [2018-10-12 21:13:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:13:13,444 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 636 transitions. [2018-10-12 21:13:13,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-12 21:13:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 636 transitions. [2018-10-12 21:13:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-12 21:13:13,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:13:13,448 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-12 21:13:13,449 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:13:13,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:13:13,449 INFO L82 PathProgramCache]: Analyzing trace with hash 484214669, now seen corresponding path program 8 times [2018-10-12 21:13:13,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:13:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:13:18,237 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-10-12 21:13:18,616 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-12 21:13:18,825 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-12 21:13:19,058 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2018-10-12 21:13:19,400 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-12 21:13:19,636 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-12 21:13:19,960 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-12 21:13:20,187 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-12 21:13:20,453 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-10-12 21:13:21,267 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-10-12 21:13:21,562 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-12 21:13:21,885 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-12 21:13:22,210 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:13:22,488 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:13:22,781 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:13:23,168 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-12 21:13:23,478 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-12 21:13:23,819 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-12 21:13:24,319 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 21:13:24,665 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-12 21:13:24,975 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-12 21:13:25,308 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:13:25,676 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2018-10-12 21:13:26,042 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-12 21:13:26,636 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-12 21:13:27,161 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-12 21:13:27,536 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-12 21:13:27,924 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-12 21:13:28,394 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:13:28,722 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-12 21:13:29,026 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-12 21:13:29,334 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-12 21:13:29,689 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-12 21:13:30,289 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-12 21:13:30,654 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-12 21:13:31,024 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-12 21:13:31,624 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-12 21:13:32,014 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-12 21:13:32,475 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-12 21:13:32,835 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-12 21:13:33,192 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-10-12 21:13:34,102 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-12 21:13:34,788 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-12 21:13:35,159 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-12 21:13:35,520 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-12 21:13:35,874 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-12 21:13:37,309 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-12 21:13:37,988 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-10-12 21:13:38,333 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-10-12 21:13:38,691 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-10-12 21:13:39,054 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-10-12 21:13:39,431 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-10-12 21:13:39,786 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-10-12 21:13:42,449 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-12 21:13:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 318 proven. 640 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-12 21:13:51,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:51,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-10-12 21:13:51,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-12 21:13:51,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-12 21:13:51,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=18527, Unknown=0, NotChecked=0, Total=18906 [2018-10-12 21:13:51,799 INFO L87 Difference]: Start difference. First operand 634 states and 636 transitions. Second operand 138 states. [2018-10-12 21:13:57,816 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-12 21:14:04,244 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-12 21:14:06,962 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-12 21:14:07,341 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-12 21:14:07,740 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-12 21:14:08,769 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2018-10-12 21:14:09,392 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2018-10-12 21:14:09,816 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2018-10-12 21:14:10,424 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-12 21:14:10,984 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2018-10-12 21:14:12,101 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 21:14:13,186 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-12 21:14:13,724 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 21:14:13,990 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52