java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:27:14,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:27:14,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:27:14,494 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:27:14,494 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:27:14,496 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:27:14,497 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:27:14,499 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:27:14,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:27:14,501 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:27:14,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:27:14,502 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:27:14,503 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:27:14,504 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:27:14,506 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:27:14,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:27:14,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:27:14,509 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:27:14,511 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:27:14,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:27:14,521 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:27:14,522 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:27:14,524 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:27:14,533 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:27:14,543 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:27:14,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:27:14,544 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:27:14,544 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:27:14,544 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:27:14,545 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:27:14,545 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:27:14,546 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:27:14,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:27:14,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:27:14,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:27:14,546 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:27:14,547 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:27:14,548 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:27:14,548 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:27:14,594 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:27:14,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:27:14,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:27:14,612 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:27:14,613 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:27:14,613 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl [2018-10-10 15:27:14,614 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl' [2018-10-10 15:27:14,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:27:14,686 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:27:14,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:27:14,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:27:14,687 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:27:14,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:27:14,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:27:14,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:27:14,786 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:27:14,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:27:14,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:27:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:27:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:27:15,760 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:27:15,761 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:27:15 BoogieIcfgContainer [2018-10-10 15:27:15,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:27:15,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:27:15,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:27:15,766 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:27:15,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:14" (1/2) ... [2018-10-10 15:27:15,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d8b80 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:27:15, skipping insertion in model container [2018-10-10 15:27:15,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:27:15" (2/2) ... [2018-10-10 15:27:15,770 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl [2018-10-10 15:27:15,780 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:27:15,790 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:27:15,808 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:27:15,837 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:27:15,838 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:27:15,838 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:27:15,838 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:27:15,838 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:27:15,838 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:27:15,839 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:27:15,839 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:27:15,839 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:27:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-10-10 15:27:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-10 15:27:15,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:15,878 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:15,879 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:15,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2104295803, now seen corresponding path program 1 times [2018-10-10 15:27:15,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:16,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:16,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:27:16,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:27:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:27:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:27:16,526 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 9 states. [2018-10-10 15:27:17,224 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-10 15:27:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:18,321 INFO L93 Difference]: Finished difference Result 254 states and 261 transitions. [2018-10-10 15:27:18,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:27:18,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-10-10 15:27:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:18,339 INFO L225 Difference]: With dead ends: 254 [2018-10-10 15:27:18,340 INFO L226 Difference]: Without dead ends: 254 [2018-10-10 15:27:18,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:27:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-10 15:27:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 144. [2018-10-10 15:27:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-10 15:27:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2018-10-10 15:27:18,396 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 37 [2018-10-10 15:27:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:18,397 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2018-10-10 15:27:18,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:27:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2018-10-10 15:27:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 15:27:18,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:18,404 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] [2018-10-10 15:27:18,405 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:18,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1186914123, now seen corresponding path program 1 times [2018-10-10 15:27:18,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:18,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:18,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:27:18,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:27:18,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:27:18,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:18,523 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand 3 states. [2018-10-10 15:27:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:18,649 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2018-10-10 15:27:18,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:27:18,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-10 15:27:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:18,653 INFO L225 Difference]: With dead ends: 222 [2018-10-10 15:27:18,653 INFO L226 Difference]: Without dead ends: 222 [2018-10-10 15:27:18,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:18,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-10 15:27:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 199. [2018-10-10 15:27:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-10 15:27:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 205 transitions. [2018-10-10 15:27:18,670 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 205 transitions. Word has length 69 [2018-10-10 15:27:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:18,670 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 205 transitions. [2018-10-10 15:27:18,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:27:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 205 transitions. [2018-10-10 15:27:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 15:27:18,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:18,674 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] [2018-10-10 15:27:18,677 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:18,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash 564493707, now seen corresponding path program 1 times [2018-10-10 15:27:18,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:18,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:18,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:27:18,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:27:18,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:27:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:27:18,917 INFO L87 Difference]: Start difference. First operand 199 states and 205 transitions. Second operand 9 states. [2018-10-10 15:27:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:19,633 INFO L93 Difference]: Finished difference Result 290 states and 295 transitions. [2018-10-10 15:27:19,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:27:19,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-10-10 15:27:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:19,638 INFO L225 Difference]: With dead ends: 290 [2018-10-10 15:27:19,639 INFO L226 Difference]: Without dead ends: 258 [2018-10-10 15:27:19,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:27:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-10 15:27:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2018-10-10 15:27:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-10 15:27:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2018-10-10 15:27:19,652 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 69 [2018-10-10 15:27:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:19,653 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2018-10-10 15:27:19,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:27:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2018-10-10 15:27:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:27:19,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:19,656 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:19,657 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:19,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:19,657 INFO L82 PathProgramCache]: Analyzing trace with hash -2096144281, now seen corresponding path program 1 times [2018-10-10 15:27:19,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:19,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:19,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:27:19,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:27:19,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:27:19,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:27:19,928 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand 11 states. [2018-10-10 15:27:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:21,345 INFO L93 Difference]: Finished difference Result 405 states and 413 transitions. [2018-10-10 15:27:21,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 15:27:21,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2018-10-10 15:27:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:21,350 INFO L225 Difference]: With dead ends: 405 [2018-10-10 15:27:21,350 INFO L226 Difference]: Without dead ends: 405 [2018-10-10 15:27:21,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:27:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-10-10 15:27:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 242. [2018-10-10 15:27:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-10 15:27:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 248 transitions. [2018-10-10 15:27:21,367 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 248 transitions. Word has length 80 [2018-10-10 15:27:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:21,368 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 248 transitions. [2018-10-10 15:27:21,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:27:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 248 transitions. [2018-10-10 15:27:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-10 15:27:21,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:21,374 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:21,374 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:21,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:21,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1496394871, now seen corresponding path program 1 times [2018-10-10 15:27:21,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:22,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:22,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:27:22,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:27:22,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:27:22,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:27:22,996 INFO L87 Difference]: Start difference. First operand 242 states and 248 transitions. Second operand 29 states. [2018-10-10 15:27:24,583 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:27:24,790 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:27:25,069 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-10 15:27:25,356 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-10 15:27:25,730 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2018-10-10 15:27:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:28,549 INFO L93 Difference]: Finished difference Result 420 states and 430 transitions. [2018-10-10 15:27:28,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-10 15:27:28,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 112 [2018-10-10 15:27:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:28,558 INFO L225 Difference]: With dead ends: 420 [2018-10-10 15:27:28,558 INFO L226 Difference]: Without dead ends: 420 [2018-10-10 15:27:28,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=538, Invalid=3002, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:27:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-10-10 15:27:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 274. [2018-10-10 15:27:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-10 15:27:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 280 transitions. [2018-10-10 15:27:28,572 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 280 transitions. Word has length 112 [2018-10-10 15:27:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:28,572 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 280 transitions. [2018-10-10 15:27:28,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:27:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 280 transitions. [2018-10-10 15:27:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-10 15:27:28,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:28,578 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:28,579 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:28,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash -418991333, now seen corresponding path program 1 times [2018-10-10 15:27:28,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:29,310 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:27:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:29,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:29,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-10 15:27:29,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-10 15:27:29,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-10 15:27:29,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:27:29,498 INFO L87 Difference]: Start difference. First operand 274 states and 280 transitions. Second operand 16 states. [2018-10-10 15:27:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:31,119 INFO L93 Difference]: Finished difference Result 597 states and 611 transitions. [2018-10-10 15:27:31,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-10 15:27:31,121 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2018-10-10 15:27:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:31,125 INFO L225 Difference]: With dead ends: 597 [2018-10-10 15:27:31,125 INFO L226 Difference]: Without dead ends: 597 [2018-10-10 15:27:31,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2018-10-10 15:27:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2018-10-10 15:27:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 372. [2018-10-10 15:27:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-10-10 15:27:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 381 transitions. [2018-10-10 15:27:31,138 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 381 transitions. Word has length 123 [2018-10-10 15:27:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:31,138 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 381 transitions. [2018-10-10 15:27:31,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-10 15:27:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 381 transitions. [2018-10-10 15:27:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-10 15:27:31,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:31,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:31,143 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:31,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:31,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1471683143, now seen corresponding path program 1 times [2018-10-10 15:27:31,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:31,973 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-10 15:27:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:32,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:32,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-10 15:27:32,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-10 15:27:32,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-10 15:27:32,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:27:32,576 INFO L87 Difference]: Start difference. First operand 372 states and 381 transitions. Second operand 25 states. [2018-10-10 15:27:34,493 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-10-10 15:27:35,415 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-10-10 15:27:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:35,678 INFO L93 Difference]: Finished difference Result 411 states and 419 transitions. [2018-10-10 15:27:35,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-10 15:27:35,678 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2018-10-10 15:27:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:35,681 INFO L225 Difference]: With dead ends: 411 [2018-10-10 15:27:35,681 INFO L226 Difference]: Without dead ends: 359 [2018-10-10 15:27:35,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 15:27:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-10 15:27:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 326. [2018-10-10 15:27:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-10-10 15:27:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 334 transitions. [2018-10-10 15:27:35,689 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 334 transitions. Word has length 144 [2018-10-10 15:27:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:35,689 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 334 transitions. [2018-10-10 15:27:35,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-10 15:27:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 334 transitions. [2018-10-10 15:27:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-10 15:27:35,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:35,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:35,692 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:35,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:35,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1223643349, now seen corresponding path program 1 times [2018-10-10 15:27:35,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:37,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:37,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-10 15:27:37,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-10 15:27:37,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-10 15:27:37,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2018-10-10 15:27:37,185 INFO L87 Difference]: Start difference. First operand 326 states and 334 transitions. Second operand 40 states. [2018-10-10 15:27:39,341 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-10-10 15:27:39,598 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-10 15:27:39,952 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2018-10-10 15:27:40,224 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2018-10-10 15:27:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:45,894 INFO L93 Difference]: Finished difference Result 506 states and 518 transitions. [2018-10-10 15:27:45,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-10 15:27:45,901 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 155 [2018-10-10 15:27:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:45,903 INFO L225 Difference]: With dead ends: 506 [2018-10-10 15:27:45,903 INFO L226 Difference]: Without dead ends: 506 [2018-10-10 15:27:45,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=910, Invalid=7462, Unknown=0, NotChecked=0, Total=8372 [2018-10-10 15:27:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-10-10 15:27:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 358. [2018-10-10 15:27:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-10 15:27:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 366 transitions. [2018-10-10 15:27:45,915 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 366 transitions. Word has length 155 [2018-10-10 15:27:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:45,916 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 366 transitions. [2018-10-10 15:27:45,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-10 15:27:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 366 transitions. [2018-10-10 15:27:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-10 15:27:45,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:45,918 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:45,918 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:45,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:45,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1133319481, now seen corresponding path program 2 times [2018-10-10 15:27:45,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:46,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:46,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:27:46,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:27:46,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:27:46,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:27:46,515 INFO L87 Difference]: Start difference. First operand 358 states and 366 transitions. Second operand 22 states. [2018-10-10 15:27:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:49,041 INFO L93 Difference]: Finished difference Result 451 states and 459 transitions. [2018-10-10 15:27:49,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-10 15:27:49,043 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2018-10-10 15:27:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:49,046 INFO L225 Difference]: With dead ends: 451 [2018-10-10 15:27:49,046 INFO L226 Difference]: Without dead ends: 451 [2018-10-10 15:27:49,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2018-10-10 15:27:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-10-10 15:27:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 361. [2018-10-10 15:27:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-10 15:27:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 369 transitions. [2018-10-10 15:27:49,055 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 369 transitions. Word has length 166 [2018-10-10 15:27:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:49,056 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 369 transitions. [2018-10-10 15:27:49,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:27:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 369 transitions. [2018-10-10 15:27:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-10 15:27:49,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:49,060 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:49,061 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:49,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:49,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2101359365, now seen corresponding path program 1 times [2018-10-10 15:27:49,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:49,579 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:52,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:52,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-10 15:27:52,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-10 15:27:52,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-10 15:27:52,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2333, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 15:27:52,801 INFO L87 Difference]: Start difference. First operand 361 states and 369 transitions. Second operand 50 states. [2018-10-10 15:27:55,590 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-10 15:27:55,964 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2018-10-10 15:27:56,253 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2018-10-10 15:27:57,394 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-10 15:27:57,739 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-10 15:27:58,157 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:27:59,010 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:27:59,159 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-10 15:27:59,373 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2018-10-10 15:27:59,713 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-10 15:28:00,839 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2018-10-10 15:28:01,110 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2018-10-10 15:28:01,572 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-10 15:28:01,833 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2018-10-10 15:28:02,115 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-10 15:28:05,243 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-10 15:28:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:08,936 INFO L93 Difference]: Finished difference Result 573 states and 586 transitions. [2018-10-10 15:28:08,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-10 15:28:08,936 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 187 [2018-10-10 15:28:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:08,939 INFO L225 Difference]: With dead ends: 573 [2018-10-10 15:28:08,939 INFO L226 Difference]: Without dead ends: 573 [2018-10-10 15:28:08,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3913 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1141, Invalid=14609, Unknown=0, NotChecked=0, Total=15750 [2018-10-10 15:28:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2018-10-10 15:28:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 414. [2018-10-10 15:28:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-10-10 15:28:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 423 transitions. [2018-10-10 15:28:08,955 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 423 transitions. Word has length 187 [2018-10-10 15:28:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:08,956 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 423 transitions. [2018-10-10 15:28:08,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-10 15:28:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 423 transitions. [2018-10-10 15:28:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-10 15:28:08,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:08,959 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:08,959 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:08,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:08,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1026345257, now seen corresponding path program 2 times [2018-10-10 15:28:08,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:11,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:11,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-10 15:28:11,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-10 15:28:11,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-10 15:28:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2143, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:28:11,972 INFO L87 Difference]: Start difference. First operand 414 states and 423 transitions. Second operand 48 states. [2018-10-10 15:28:12,996 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 28 [2018-10-10 15:28:13,189 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 23 [2018-10-10 15:28:14,176 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 35 [2018-10-10 15:28:14,442 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 47 [2018-10-10 15:28:14,786 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 56 [2018-10-10 15:28:15,061 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 60 [2018-10-10 15:28:15,439 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 66 [2018-10-10 15:28:15,795 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 70 [2018-10-10 15:28:16,264 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 96 [2018-10-10 15:28:16,604 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2018-10-10 15:28:16,980 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 96 [2018-10-10 15:28:17,367 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 100 [2018-10-10 15:28:17,842 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-10 15:28:18,356 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 102 [2018-10-10 15:28:19,136 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 106 [2018-10-10 15:28:19,775 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 112 [2018-10-10 15:28:20,299 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 104 [2018-10-10 15:28:20,525 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:28:20,849 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-10 15:28:21,229 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-10 15:28:21,573 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-10 15:28:21,892 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-10 15:28:22,237 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-10 15:28:22,491 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-10 15:28:22,803 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2018-10-10 15:28:23,029 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-10-10 15:28:23,409 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-10 15:28:23,683 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-10 15:28:24,001 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2018-10-10 15:28:24,406 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-10 15:28:24,615 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2018-10-10 15:28:24,871 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-10 15:28:25,107 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2018-10-10 15:28:25,391 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-10 15:28:25,690 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-10 15:28:26,072 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2018-10-10 15:28:26,375 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2018-10-10 15:28:26,740 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-10 15:28:27,067 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2018-10-10 15:28:27,410 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-10 15:28:28,366 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 101 [2018-10-10 15:28:28,593 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-10 15:28:29,666 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-10 15:28:30,035 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 101 [2018-10-10 15:28:30,518 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2018-10-10 15:28:31,018 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2018-10-10 15:28:31,536 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 114 [2018-10-10 15:28:31,944 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2018-10-10 15:28:32,342 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2018-10-10 15:28:32,955 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2018-10-10 15:28:33,792 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 112 [2018-10-10 15:28:34,401 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2018-10-10 15:28:34,914 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 116 [2018-10-10 15:28:35,418 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 121 [2018-10-10 15:28:35,661 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-10 15:28:35,847 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-10 15:28:36,067 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-10 15:28:36,757 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 119 [2018-10-10 15:28:37,868 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2018-10-10 15:28:38,598 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2018-10-10 15:28:39,148 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2018-10-10 15:28:39,479 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:28:40,306 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2018-10-10 15:28:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:40,399 INFO L93 Difference]: Finished difference Result 754 states and 768 transitions. [2018-10-10 15:28:40,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-10 15:28:40,400 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 198 [2018-10-10 15:28:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:40,404 INFO L225 Difference]: With dead ends: 754 [2018-10-10 15:28:40,404 INFO L226 Difference]: Without dead ends: 754 [2018-10-10 15:28:40,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5279 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=2720, Invalid=17020, Unknown=0, NotChecked=0, Total=19740 [2018-10-10 15:28:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-10-10 15:28:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 481. [2018-10-10 15:28:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-10 15:28:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 492 transitions. [2018-10-10 15:28:40,420 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 492 transitions. Word has length 198 [2018-10-10 15:28:40,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:40,421 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 492 transitions. [2018-10-10 15:28:40,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-10 15:28:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 492 transitions. [2018-10-10 15:28:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-10 15:28:40,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:40,423 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:40,424 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:40,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1097218793, now seen corresponding path program 3 times [2018-10-10 15:28:40,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-10 15:28:40,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:28:40,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:28:40,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:28:40,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:28:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:28:40,519 INFO L87 Difference]: Start difference. First operand 481 states and 492 transitions. Second operand 3 states. [2018-10-10 15:28:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:40,650 INFO L93 Difference]: Finished difference Result 453 states and 457 transitions. [2018-10-10 15:28:40,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:28:40,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-10-10 15:28:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:40,652 INFO L225 Difference]: With dead ends: 453 [2018-10-10 15:28:40,652 INFO L226 Difference]: Without dead ends: 453 [2018-10-10 15:28:40,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:28:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-10 15:28:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 438. [2018-10-10 15:28:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2018-10-10 15:28:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 443 transitions. [2018-10-10 15:28:40,661 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 443 transitions. Word has length 198 [2018-10-10 15:28:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:40,662 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 443 transitions. [2018-10-10 15:28:40,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:28:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 443 transitions. [2018-10-10 15:28:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-10 15:28:40,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:40,665 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:40,665 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:40,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:40,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1558857995, now seen corresponding path program 2 times [2018-10-10 15:28:40,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 30 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:43,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:43,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 15:28:43,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 15:28:43,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 15:28:43,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2536, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:28:43,099 INFO L87 Difference]: Start difference. First operand 438 states and 443 transitions. Second operand 52 states. [2018-10-10 15:28:43,957 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:28:44,166 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-10 15:28:44,325 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:28:44,843 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:28:45,015 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:28:45,304 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:28:45,513 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:28:45,853 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-10 15:28:46,436 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:28:46,791 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:28:47,002 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:28:47,415 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-10 15:28:47,685 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:28:48,767 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-10 15:28:50,780 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-10 15:28:50,998 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-10 15:28:51,199 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-10 15:28:51,484 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:28:51,690 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-10 15:28:51,942 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:28:52,222 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2018-10-10 15:28:52,451 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:28:52,688 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2018-10-10 15:28:52,919 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:28:53,424 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-10 15:28:53,739 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-10 15:28:54,110 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2018-10-10 15:28:54,450 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:28:54,711 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:28:54,996 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-10 15:28:55,947 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2018-10-10 15:28:57,781 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:28:58,158 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2018-10-10 15:28:58,450 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-10 15:28:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:58,753 INFO L93 Difference]: Finished difference Result 459 states and 463 transitions. [2018-10-10 15:28:58,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-10 15:28:58,753 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 219 [2018-10-10 15:28:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:58,755 INFO L225 Difference]: With dead ends: 459 [2018-10-10 15:28:58,755 INFO L226 Difference]: Without dead ends: 363 [2018-10-10 15:28:58,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3362 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1252, Invalid=14498, Unknown=0, NotChecked=0, Total=15750 [2018-10-10 15:28:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-10 15:28:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-10 15:28:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-10 15:28:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2018-10-10 15:28:58,762 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 219 [2018-10-10 15:28:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:58,763 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 367 transitions. [2018-10-10 15:28:58,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 15:28:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 367 transitions. [2018-10-10 15:28:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-10 15:28:58,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:58,765 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, 2, 2, 2, 2, 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] [2018-10-10 15:28:58,765 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:58,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:58,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1469621415, now seen corresponding path program 3 times [2018-10-10 15:28:58,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:01,084 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-10 15:29:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:29:04,746 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:04,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-10 15:29:04,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-10 15:29:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-10 15:29:04,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3865, Unknown=0, NotChecked=0, Total=4032 [2018-10-10 15:29:04,748 INFO L87 Difference]: Start difference. First operand 363 states and 367 transitions. Second operand 64 states. [2018-10-10 15:29:05,809 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 25 [2018-10-10 15:29:06,073 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 28 [2018-10-10 15:29:06,347 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 32 [2018-10-10 15:29:06,594 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 27 [2018-10-10 15:29:06,828 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 19 [2018-10-10 15:29:07,050 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 22 [2018-10-10 15:29:07,312 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 27 [2018-10-10 15:29:07,568 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 29 [2018-10-10 15:29:07,879 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 32 [2018-10-10 15:29:08,192 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 39 [2018-10-10 15:29:08,513 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 46 [2018-10-10 15:29:08,953 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 60 [2018-10-10 15:29:09,593 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 71 [2018-10-10 15:29:10,076 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 77 [2018-10-10 15:29:10,680 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 81 [2018-10-10 15:29:11,292 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 85 [2018-10-10 15:29:11,677 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 46 [2018-10-10 15:29:11,971 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 42 [2018-10-10 15:29:12,358 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 46 [2018-10-10 15:29:12,698 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 48 [2018-10-10 15:29:13,226 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2018-10-10 15:29:13,434 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-10-10 15:29:13,627 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-10 15:29:14,156 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-10 15:29:14,456 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-10 15:29:14,788 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-10-10 15:29:15,126 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2018-10-10 15:29:15,494 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2018-10-10 15:29:15,929 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 112 [2018-10-10 15:29:16,216 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:29:16,542 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-10 15:29:16,972 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2018-10-10 15:29:17,402 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2018-10-10 15:29:17,893 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 109 [2018-10-10 15:29:18,353 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 112 [2018-10-10 15:29:18,601 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2018-10-10 15:29:18,811 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-10 15:29:19,090 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:29:19,461 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2018-10-10 15:29:19,814 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-10-10 15:29:20,278 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 50 [2018-10-10 15:29:20,607 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 57 [2018-10-10 15:29:20,879 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 52 [2018-10-10 15:29:21,138 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 34 [2018-10-10 15:29:21,434 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 42 [2018-10-10 15:29:21,720 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 46 [2018-10-10 15:29:22,009 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 48 [2018-10-10 15:29:22,365 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 51 [2018-10-10 15:29:22,763 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 66 [2018-10-10 15:29:23,167 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 68 [2018-10-10 15:29:23,572 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 71 [2018-10-10 15:29:23,972 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 45 [2018-10-10 15:29:24,344 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 60 [2018-10-10 15:29:24,870 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 51 [2018-10-10 15:29:25,666 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 66 [2018-10-10 15:29:26,929 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 80 [2018-10-10 15:29:27,522 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 90 [2018-10-10 15:29:28,010 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 100 [2018-10-10 15:29:28,505 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 95 [2018-10-10 15:29:28,928 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2018-10-10 15:29:29,381 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 87 [2018-10-10 15:29:29,894 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 11 [2018-10-10 15:29:30,644 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 11 [2018-10-10 15:29:30,928 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 15 [2018-10-10 15:29:31,242 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 17 [2018-10-10 15:29:33,180 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 77 [2018-10-10 15:29:33,823 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 68 [2018-10-10 15:29:34,317 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 63 [2018-10-10 15:29:34,673 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 58 [2018-10-10 15:29:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:34,916 INFO L93 Difference]: Finished difference Result 521 states and 524 transitions. [2018-10-10 15:29:34,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-10 15:29:34,917 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 230 [2018-10-10 15:29:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:34,919 INFO L225 Difference]: With dead ends: 521 [2018-10-10 15:29:34,919 INFO L226 Difference]: Without dead ends: 521 [2018-10-10 15:29:34,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5883 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=2811, Invalid=19839, Unknown=0, NotChecked=0, Total=22650 [2018-10-10 15:29:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2018-10-10 15:29:34,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 392. [2018-10-10 15:29:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-10-10 15:29:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 396 transitions. [2018-10-10 15:29:34,928 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 396 transitions. Word has length 230 [2018-10-10 15:29:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:34,929 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 396 transitions. [2018-10-10 15:29:34,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-10 15:29:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 396 transitions. [2018-10-10 15:29:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-10 15:29:34,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:34,931 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:29:34,931 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:34,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1326192437, now seen corresponding path program 4 times [2018-10-10 15:29:34,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:36,012 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-10 15:29:37,800 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2018-10-10 15:29:38,756 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-10 15:29:43,986 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-10-10 15:29:44,237 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-10-10 15:29:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:29:48,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:48,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-10 15:29:48,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-10 15:29:48,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-10 15:29:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=8197, Unknown=0, NotChecked=0, Total=8556 [2018-10-10 15:29:48,311 INFO L87 Difference]: Start difference. First operand 392 states and 396 transitions. Second operand 93 states. [2018-10-10 15:29:50,425 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 39 [2018-10-10 15:29:50,965 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 46 [2018-10-10 15:29:51,406 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 38 [2018-10-10 15:29:51,803 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 23 [2018-10-10 15:29:52,205 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 26 [2018-10-10 15:29:52,669 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 29 [2018-10-10 15:29:53,045 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 31 [2018-10-10 15:29:53,563 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 38 [2018-10-10 15:29:54,041 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 45 [2018-10-10 15:29:54,539 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 52 [2018-10-10 15:29:55,197 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 66 [2018-10-10 15:29:55,877 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 68 [2018-10-10 15:29:56,764 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 79 [2018-10-10 15:29:57,489 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 83 [2018-10-10 15:29:58,519 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 89 [2018-10-10 15:29:59,446 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 93 [2018-10-10 15:30:00,517 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 138 [2018-10-10 15:30:01,424 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 134 [2018-10-10 15:30:02,423 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 143 [2018-10-10 15:30:03,507 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 147 [2018-10-10 15:30:04,477 WARN L178 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 146 [2018-10-10 15:30:05,065 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2018-10-10 15:30:05,521 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2018-10-10 15:30:05,941 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-10-10 15:30:06,363 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-10-10 15:30:06,631 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-10-10 15:30:06,878 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-10 15:30:07,253 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:30:07,672 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-10 15:30:08,151 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2018-10-10 15:30:08,683 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2018-10-10 15:30:09,268 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 114 [2018-10-10 15:30:09,664 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-10 15:30:10,131 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2018-10-10 15:30:10,721 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 122 [2018-10-10 15:30:11,391 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-10-10 15:30:12,065 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 128 [2018-10-10 15:30:12,753 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 137 [2018-10-10 15:30:13,155 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2018-10-10 15:30:13,473 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-10 15:30:13,875 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-10-10 15:30:14,370 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2018-10-10 15:30:14,793 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2018-10-10 15:30:16,084 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 156 [2018-10-10 15:30:17,297 WARN L178 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 162 [2018-10-10 15:30:18,124 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 147 [2018-10-10 15:30:18,395 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-10-10 15:30:18,752 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 15:30:19,165 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2018-10-10 15:30:19,524 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2018-10-10 15:30:20,081 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2018-10-10 15:30:20,641 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2018-10-10 15:30:21,343 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2018-10-10 15:30:22,124 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 103 [2018-10-10 15:30:22,993 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 119 [2018-10-10 15:30:23,942 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 122 [2018-10-10 15:30:24,522 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2018-10-10 15:30:25,208 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 100 [2018-10-10 15:30:26,067 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 123 [2018-10-10 15:30:26,896 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 117 [2018-10-10 15:30:27,808 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 124 [2018-10-10 15:30:28,707 WARN L178 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 132 [2018-10-10 15:30:29,224 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2018-10-10 15:30:29,646 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2018-10-10 15:30:30,701 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 168 [2018-10-10 15:30:31,353 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 106 [2018-10-10 15:30:32,450 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 172 [2018-10-10 15:30:33,358 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-10-10 15:30:33,693 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2018-10-10 15:30:33,923 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-10 15:30:34,379 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 105 [2018-10-10 15:30:34,700 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2018-10-10 15:30:35,102 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2018-10-10 15:30:36,036 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-10-10 15:30:37,150 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 170 [2018-10-10 15:30:37,414 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2018-10-10 15:30:37,815 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2018-10-10 15:30:38,569 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2018-10-10 15:30:38,876 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2018-10-10 15:30:40,003 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 174 [2018-10-10 15:30:40,541 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-10-10 15:30:40,972 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-10 15:30:42,066 WARN L178 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 166 [2018-10-10 15:30:43,395 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 176 [2018-10-10 15:30:44,692 WARN L178 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 181 [2018-10-10 15:30:45,218 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 94 [2018-10-10 15:30:45,656 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 89 [2018-10-10 15:30:47,098 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-10 15:30:48,127 WARN L178 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 169 [2018-10-10 15:30:49,239 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 166 [2018-10-10 15:30:49,568 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-10 15:30:50,730 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 156 [2018-10-10 15:30:51,315 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-10 15:30:51,676 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2018-10-10 15:30:51,986 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2018-10-10 15:30:53,047 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 168 [2018-10-10 15:30:53,962 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-10 15:30:54,260 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2018-10-10 15:30:55,358 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 169 [2018-10-10 15:30:56,439 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 160 [2018-10-10 15:30:57,677 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 170 [2018-10-10 15:30:58,782 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 175 [2018-10-10 15:30:59,220 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2018-10-10 15:30:59,657 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2018-10-10 15:31:00,823 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 189 [2018-10-10 15:31:01,775 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 156 [2018-10-10 15:31:02,396 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-10 15:31:03,535 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 176 [2018-10-10 15:31:04,039 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2018-10-10 15:31:05,329 WARN L178 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 183 [2018-10-10 15:31:06,577 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 147 [2018-10-10 15:31:06,965 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-10 15:31:08,339 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 144 [2018-10-10 15:31:09,431 WARN L178 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 175 [2018-10-10 15:31:10,522 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 166 [2018-10-10 15:31:10,968 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2018-10-10 15:31:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:11,010 INFO L93 Difference]: Finished difference Result 673 states and 677 transitions. [2018-10-10 15:31:11,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-10 15:31:11,011 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 241 [2018-10-10 15:31:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:11,014 INFO L225 Difference]: With dead ends: 673 [2018-10-10 15:31:11,014 INFO L226 Difference]: Without dead ends: 673 [2018-10-10 15:31:11,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13489 ImplicationChecksByTransitivity, 83.4s TimeCoverageRelationStatistics Valid=5692, Invalid=46064, Unknown=0, NotChecked=0, Total=51756 [2018-10-10 15:31:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2018-10-10 15:31:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 481. [2018-10-10 15:31:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-10 15:31:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 486 transitions. [2018-10-10 15:31:11,025 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 486 transitions. Word has length 241 [2018-10-10 15:31:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:11,026 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 486 transitions. [2018-10-10 15:31:11,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-10 15:31:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 486 transitions. [2018-10-10 15:31:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-10 15:31:11,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:31:11,028 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:31:11,028 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:31:11,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:31:11,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1919323977, now seen corresponding path program 4 times [2018-10-10 15:31:11,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:31:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:31:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:31:15,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:31:15,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-10 15:31:15,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-10 15:31:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-10 15:31:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4116, Unknown=0, NotChecked=0, Total=4290 [2018-10-10 15:31:15,668 INFO L87 Difference]: Start difference. First operand 481 states and 486 transitions. Second operand 66 states. [2018-10-10 15:31:17,381 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 23 [2018-10-10 15:31:17,625 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 28 [2018-10-10 15:31:18,086 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 35 [2018-10-10 15:31:18,328 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 40 [2018-10-10 15:31:18,660 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 52 [2018-10-10 15:31:19,108 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 61 [2018-10-10 15:31:19,455 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 64 [2018-10-10 15:31:19,940 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 70 [2018-10-10 15:31:20,352 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 74 [2018-10-10 15:31:20,641 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 49 [2018-10-10 15:31:20,883 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 45 [2018-10-10 15:31:21,210 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 49 [2018-10-10 15:31:21,493 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 51 [2018-10-10 15:31:21,948 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2018-10-10 15:31:22,362 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2018-10-10 15:31:22,623 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-10-10 15:31:23,046 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-10 15:31:23,268 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-10 15:31:23,557 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-10 15:31:23,868 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:31:24,394 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-10 15:31:24,623 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2018-10-10 15:31:24,934 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2018-10-10 15:31:25,221 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 89 [2018-10-10 15:31:25,417 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-10 15:31:26,424 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 41 [2018-10-10 15:31:27,068 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 43 [2018-10-10 15:31:27,284 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 45 [2018-10-10 15:31:27,637 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 48 [2018-10-10 15:31:27,931 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 53 [2018-10-10 15:31:28,225 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 58 [2018-10-10 15:31:29,161 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 73 [2018-10-10 15:31:29,570 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 82 [2018-10-10 15:31:29,984 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 57 [2018-10-10 15:31:30,372 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 80 [2018-10-10 15:31:30,766 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 89 [2018-10-10 15:31:31,327 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 94 [2018-10-10 15:31:31,694 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 81 [2018-10-10 15:31:32,550 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 101 [2018-10-10 15:31:33,701 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 98 [2018-10-10 15:31:34,329 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 108 [2018-10-10 15:31:34,865 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 103 [2018-10-10 15:31:35,315 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 118 [2018-10-10 15:31:35,811 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 133 [2018-10-10 15:31:36,314 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 128 [2018-10-10 15:31:36,718 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 113 [2018-10-10 15:31:37,149 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 115 [2018-10-10 15:31:38,977 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 15:31:39,976 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 100 [2018-10-10 15:31:40,631 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 95 [2018-10-10 15:31:41,103 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 85 [2018-10-10 15:31:41,469 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 90 [2018-10-10 15:31:41,841 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 95 [2018-10-10 15:31:42,211 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 88 [2018-10-10 15:31:42,520 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 83 [2018-10-10 15:31:42,911 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 90 [2018-10-10 15:31:44,649 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 64 [2018-10-10 15:31:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:44,686 INFO L93 Difference]: Finished difference Result 614 states and 619 transitions. [2018-10-10 15:31:44,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-10 15:31:44,687 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 262 [2018-10-10 15:31:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:44,689 INFO L225 Difference]: With dead ends: 614 [2018-10-10 15:31:44,689 INFO L226 Difference]: Without dead ends: 614 [2018-10-10 15:31:44,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6220 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=2371, Invalid=21499, Unknown=0, NotChecked=0, Total=23870 [2018-10-10 15:31:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2018-10-10 15:31:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 481. [2018-10-10 15:31:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-10 15:31:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 486 transitions. [2018-10-10 15:31:44,697 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 486 transitions. Word has length 262 [2018-10-10 15:31:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:44,697 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 486 transitions. [2018-10-10 15:31:44,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-10 15:31:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 486 transitions. [2018-10-10 15:31:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-10 15:31:44,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:31:44,699 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:31:44,700 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:31:44,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:31:44,700 INFO L82 PathProgramCache]: Analyzing trace with hash -531331429, now seen corresponding path program 5 times [2018-10-10 15:31:44,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:31:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:31:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 257 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:31:51,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:31:51,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-10 15:31:51,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-10 15:31:51,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-10 15:31:51,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=4934, Unknown=0, NotChecked=0, Total=5112 [2018-10-10 15:31:51,297 INFO L87 Difference]: Start difference. First operand 481 states and 486 transitions. Second operand 72 states. [2018-10-10 15:31:54,216 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2018-10-10 15:31:54,486 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 35 [2018-10-10 15:31:54,864 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 47 [2018-10-10 15:31:55,395 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 56 [2018-10-10 15:31:55,775 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 60 [2018-10-10 15:31:56,328 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 66 [2018-10-10 15:31:56,751 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 70 [2018-10-10 15:31:57,077 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 42 [2018-10-10 15:31:57,340 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 38 [2018-10-10 15:31:57,720 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 42 [2018-10-10 15:31:58,030 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 44 [2018-10-10 15:31:58,530 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2018-10-10 15:31:58,762 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-10 15:31:59,467 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-10 15:31:59,716 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-10 15:31:59,962 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-10 15:32:00,268 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:32:00,597 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2018-10-10 15:32:00,829 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-10-10 15:32:01,079 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-10 15:32:01,347 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2018-10-10 15:32:01,707 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-10 15:32:02,051 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2018-10-10 15:32:02,285 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2018-10-10 15:32:02,474 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-10 15:32:02,743 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-10 15:32:03,050 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2018-10-10 15:32:03,665 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 42 [2018-10-10 15:32:03,998 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 49 [2018-10-10 15:32:04,249 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 44 [2018-10-10 15:32:04,496 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 35 [2018-10-10 15:32:04,752 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 41 [2018-10-10 15:32:05,040 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 51 [2018-10-10 15:32:05,339 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 53 [2018-10-10 15:32:05,755 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 58 [2018-10-10 15:32:06,117 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 63 [2018-10-10 15:32:06,560 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 80 [2018-10-10 15:32:07,059 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 90 [2018-10-10 15:32:07,561 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 93 [2018-10-10 15:32:08,044 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 53 [2018-10-10 15:32:08,527 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 80 [2018-10-10 15:32:09,051 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 94 [2018-10-10 15:32:09,579 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 96 [2018-10-10 15:32:10,175 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 101 [2018-10-10 15:32:10,729 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 104 [2018-10-10 15:32:11,141 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 81 [2018-10-10 15:32:11,485 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 76 [2018-10-10 15:32:12,453 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 86 [2018-10-10 15:32:15,530 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 87 [2018-10-10 15:32:16,093 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 79 [2018-10-10 15:32:16,612 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 89 [2018-10-10 15:32:17,057 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 99 [2018-10-10 15:32:17,497 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 94 [2018-10-10 15:32:17,851 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 84 [2018-10-10 15:32:18,241 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 86 [2018-10-10 15:32:19,462 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 50 [2018-10-10 15:32:20,016 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 43 [2018-10-10 15:32:21,321 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 65 [2018-10-10 15:32:23,283 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 76 [2018-10-10 15:32:24,187 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 67 [2018-10-10 15:32:24,655 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 62 [2018-10-10 15:32:25,033 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 57 [2018-10-10 15:32:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:25,421 INFO L93 Difference]: Finished difference Result 711 states and 717 transitions. [2018-10-10 15:32:25,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-10 15:32:25,422 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 273 [2018-10-10 15:32:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:25,426 INFO L225 Difference]: With dead ends: 711 [2018-10-10 15:32:25,426 INFO L226 Difference]: Without dead ends: 711 [2018-10-10 15:32:25,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6949 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=3042, Invalid=26370, Unknown=0, NotChecked=0, Total=29412 [2018-10-10 15:32:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-10-10 15:32:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 545. [2018-10-10 15:32:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2018-10-10 15:32:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 550 transitions. [2018-10-10 15:32:25,435 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 550 transitions. Word has length 273 [2018-10-10 15:32:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:25,436 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 550 transitions. [2018-10-10 15:32:25,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-10 15:32:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 550 transitions. [2018-10-10 15:32:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-10 15:32:25,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:25,438 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:32:25,439 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:25,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash 273168695, now seen corresponding path program 5 times [2018-10-10 15:32:25,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:26,272 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:32:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:37,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:37,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-10-10 15:32:37,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-10 15:32:37,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-10 15:32:37,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=10601, Unknown=0, NotChecked=0, Total=11130 [2018-10-10 15:32:37,532 INFO L87 Difference]: Start difference. First operand 545 states and 550 transitions. Second operand 106 states. [2018-10-10 15:32:39,681 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-10 15:32:40,141 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-10 15:32:40,452 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2018-10-10 15:32:40,940 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2018-10-10 15:32:41,303 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2018-10-10 15:32:41,654 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-10 15:32:41,925 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-10-10 15:32:42,340 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2018-10-10 15:32:42,674 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2018-10-10 15:32:43,168 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2018-10-10 15:32:43,521 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2018-10-10 15:32:43,817 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2018-10-10 15:32:44,458 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-10 15:32:44,910 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2018-10-10 15:32:45,169 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-10 15:32:45,462 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-10-10 15:32:45,791 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:32:46,141 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2018-10-10 15:32:46,513 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 88 [2018-10-10 15:32:46,815 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-10 15:32:47,137 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2018-10-10 15:32:47,511 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2018-10-10 15:32:48,097 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2018-10-10 15:32:48,578 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2018-10-10 15:32:49,062 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 95 [2018-10-10 15:32:49,472 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2018-10-10 15:32:50,097 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 92 [2018-10-10 15:32:50,521 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 94 [2018-10-10 15:32:51,159 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 93 [2018-10-10 15:32:51,649 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 108 [2018-10-10 15:32:52,102 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 103 [2018-10-10 15:32:52,975 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-10 15:32:53,235 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-10 15:32:53,542 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-10-10 15:32:53,882 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-10-10 15:32:54,285 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2018-10-10 15:32:54,803 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2018-10-10 15:32:55,018 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2018-10-10 15:32:55,285 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-10 15:32:55,612 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-10-10 15:32:56,009 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 101 [2018-10-10 15:32:56,410 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 109 [2018-10-10 15:32:56,749 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2018-10-10 15:32:57,065 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2018-10-10 15:32:57,528 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2018-10-10 15:32:57,934 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2018-10-10 15:32:58,551 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-10 15:32:58,938 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 97 [2018-10-10 15:32:59,353 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 92 [2018-10-10 15:32:59,742 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2018-10-10 15:33:00,333 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-10 15:33:00,563 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-10 15:33:00,830 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2018-10-10 15:33:01,150 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2018-10-10 15:33:01,533 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2018-10-10 15:33:01,932 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-10 15:33:02,503 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2018-10-10 15:33:02,817 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2018-10-10 15:33:03,488 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 90 [2018-10-10 15:33:03,899 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2018-10-10 15:33:04,495 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2018-10-10 15:33:05,147 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2018-10-10 15:33:06,186 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2018-10-10 15:33:06,680 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2018-10-10 15:33:07,632 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2018-10-10 15:33:08,157 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2018-10-10 15:33:09,103 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-10 15:33:09,345 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-10 15:33:09,743 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2018-10-10 15:33:10,306 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-10 15:33:10,813 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2018-10-10 15:33:11,293 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-10 15:33:11,620 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-10 15:33:12,036 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-10-10 15:33:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:13,345 INFO L93 Difference]: Finished difference Result 748 states and 755 transitions. [2018-10-10 15:33:13,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-10 15:33:13,345 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 284 [2018-10-10 15:33:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:13,350 INFO L225 Difference]: With dead ends: 748 [2018-10-10 15:33:13,350 INFO L226 Difference]: Without dead ends: 748 [2018-10-10 15:33:13,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 5 SyntacticMatches, 8 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16396 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=4301, Invalid=45651, Unknown=0, NotChecked=0, Total=49952 [2018-10-10 15:33:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-10 15:33:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 599. [2018-10-10 15:33:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2018-10-10 15:33:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 605 transitions. [2018-10-10 15:33:13,361 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 605 transitions. Word has length 284 [2018-10-10 15:33:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:13,362 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 605 transitions. [2018-10-10 15:33:13,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-10 15:33:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 605 transitions. [2018-10-10 15:33:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-10 15:33:13,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:13,364 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:33:13,365 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:13,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:13,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1342218617, now seen corresponding path program 6 times [2018-10-10 15:33:13,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:14,315 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:33:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 43 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:25,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:25,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-10 15:33:25,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-10 15:33:25,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-10 15:33:25,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=7971, Unknown=0, NotChecked=0, Total=8190 [2018-10-10 15:33:25,611 INFO L87 Difference]: Start difference. First operand 599 states and 605 transitions. Second operand 91 states. [2018-10-10 15:33:27,464 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 35 [2018-10-10 15:33:27,908 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 41 [2018-10-10 15:33:28,304 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 41 [2018-10-10 15:33:28,655 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 34 [2018-10-10 15:33:29,008 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 21 [2018-10-10 15:33:29,372 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 24 [2018-10-10 15:33:29,751 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 27 [2018-10-10 15:33:30,085 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 29 [2018-10-10 15:33:30,615 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 37 [2018-10-10 15:33:31,088 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 45 [2018-10-10 15:33:31,583 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 53 [2018-10-10 15:33:32,262 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 70 [2018-10-10 15:33:32,851 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 72 [2018-10-10 15:33:33,736 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 84 [2018-10-10 15:33:34,492 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 99 [2018-10-10 15:33:35,324 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 100 [2018-10-10 15:33:36,338 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 109 [2018-10-10 15:33:37,226 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 111 [2018-10-10 15:33:37,810 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 63 [2018-10-10 15:33:38,305 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 62 [2018-10-10 15:33:38,995 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 66 [2018-10-10 15:33:39,577 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 68 [2018-10-10 15:33:40,142 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-10 15:33:40,525 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-10 15:33:40,921 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-10 15:33:41,219 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2018-10-10 15:33:42,005 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-10 15:33:42,265 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-10 15:33:42,567 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:33:42,937 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2018-10-10 15:33:43,379 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2018-10-10 15:33:43,889 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2018-10-10 15:33:44,234 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-10 15:33:44,649 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2018-10-10 15:33:45,159 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 126 [2018-10-10 15:33:45,780 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 124 [2018-10-10 15:33:46,476 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 133 [2018-10-10 15:33:47,161 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 139 [2018-10-10 15:33:47,571 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2018-10-10 15:33:47,921 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2018-10-10 15:33:48,376 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2018-10-10 15:33:48,923 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2018-10-10 15:33:49,411 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2018-10-10 15:33:50,219 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 54 [2018-10-10 15:33:50,807 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 64 [2018-10-10 15:33:51,269 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 57 [2018-10-10 15:33:51,718 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 43 [2018-10-10 15:33:52,158 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 46 [2018-10-10 15:33:52,620 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 50 [2018-10-10 15:33:53,053 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 52 [2018-10-10 15:33:53,680 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 61 [2018-10-10 15:33:54,289 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 64 [2018-10-10 15:33:54,906 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 67 [2018-10-10 15:33:55,627 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 83 [2018-10-10 15:33:56,462 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 93 [2018-10-10 15:33:57,240 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 96 [2018-10-10 15:33:57,960 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 60 [2018-10-10 15:33:58,651 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 84 [2018-10-10 15:33:59,333 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 88 [2018-10-10 15:34:00,324 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 98 [2018-10-10 15:34:01,129 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 104 [2018-10-10 15:34:01,765 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 69 [2018-10-10 15:34:02,284 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 63 [2018-10-10 15:34:03,032 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 72 [2018-10-10 15:34:04,177 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 77 [2018-10-10 15:34:04,957 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 98 [2018-10-10 15:34:05,179 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-10 15:34:05,506 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2018-10-10 15:34:07,565 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 117 [2018-10-10 15:34:08,464 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 112 [2018-10-10 15:34:09,249 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 134 [2018-10-10 15:34:10,118 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 156 [2018-10-10 15:34:11,002 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 151 [2018-10-10 15:34:11,783 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 129 [2018-10-10 15:34:12,569 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 133 [2018-10-10 15:34:13,768 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 139 [2018-10-10 15:34:14,639 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 142 [2018-10-10 15:34:15,577 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 146 [2018-10-10 15:34:16,449 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 143 [2018-10-10 15:34:16,904 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 17 [2018-10-10 15:34:17,448 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 141 [2018-10-10 15:34:18,027 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 140 [2018-10-10 15:34:18,398 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 7 [2018-10-10 15:34:19,005 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 12 [2018-10-10 15:34:19,441 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 14 [2018-10-10 15:34:19,883 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-10 15:34:20,564 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 153 [2018-10-10 15:34:21,195 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 137 [2018-10-10 15:34:21,986 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 115 [2018-10-10 15:34:22,500 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 133 [2018-10-10 15:34:23,091 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 151 [2018-10-10 15:34:23,558 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2018-10-10 15:34:23,889 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2018-10-10 15:34:24,321 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 120 [2018-10-10 15:34:24,919 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2018-10-10 15:34:25,990 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 125 [2018-10-10 15:34:27,270 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 121 [2018-10-10 15:34:28,101 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 114 [2018-10-10 15:34:28,876 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 96 [2018-10-10 15:34:29,579 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 103 [2018-10-10 15:34:30,323 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 110 [2018-10-10 15:34:30,956 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 92 [2018-10-10 15:34:31,503 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 85 [2018-10-10 15:34:32,192 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 91 [2018-10-10 15:34:33,054 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 94 [2018-10-10 15:34:33,433 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2018-10-10 15:34:34,036 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2018-10-10 15:34:34,419 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2018-10-10 15:34:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:34,489 INFO L93 Difference]: Finished difference Result 665 states and 669 transitions. [2018-10-10 15:34:34,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-10 15:34:34,490 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 294 [2018-10-10 15:34:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:34,493 INFO L225 Difference]: With dead ends: 665 [2018-10-10 15:34:34,493 INFO L226 Difference]: Without dead ends: 537 [2018-10-10 15:34:34,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9370 ImplicationChecksByTransitivity, 66.4s TimeCoverageRelationStatistics Valid=4389, Invalid=38253, Unknown=0, NotChecked=0, Total=42642 [2018-10-10 15:34:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2018-10-10 15:34:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 524. [2018-10-10 15:34:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-10 15:34:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 529 transitions. [2018-10-10 15:34:34,511 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 529 transitions. Word has length 294 [2018-10-10 15:34:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:34,512 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 529 transitions. [2018-10-10 15:34:34,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-10 15:34:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 529 transitions. [2018-10-10 15:34:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-10 15:34:34,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:34,514 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:34:34,514 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:34,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash -131038549, now seen corresponding path program 7 times [2018-10-10 15:34:34,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:35,772 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-10 15:34:37,117 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-10 15:34:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:46,746 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:46,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-10 15:34:46,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-10 15:34:46,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-10 15:34:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=8219, Unknown=0, NotChecked=0, Total=8556 [2018-10-10 15:34:46,747 INFO L87 Difference]: Start difference. First operand 524 states and 529 transitions. Second operand 93 states. [2018-10-10 15:34:50,192 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 37 [2018-10-10 15:34:50,488 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2018-10-10 15:34:50,849 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 52 [2018-10-10 15:34:51,392 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 67 [2018-10-10 15:34:52,194 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 79 [2018-10-10 15:34:52,798 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2018-10-10 15:34:53,616 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 91 [2018-10-10 15:34:54,269 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 95 [2018-10-10 15:34:54,671 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 54 [2018-10-10 15:34:54,966 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 53 [2018-10-10 15:34:55,454 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 57 [2018-10-10 15:34:55,841 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 59 [2018-10-10 15:34:56,563 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-10 15:34:56,781 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2018-10-10 15:34:57,255 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 15:34:57,625 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-10 15:34:57,884 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-10 15:34:58,312 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-10-10 15:34:58,702 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-10 15:34:59,120 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-10 15:34:59,754 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2018-10-10 15:35:00,429 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 112 [2018-10-10 15:35:01,095 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2018-10-10 15:35:01,557 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:35:01,933 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2018-10-10 15:35:02,337 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2018-10-10 15:35:03,161 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2018-10-10 15:35:03,657 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 96 [2018-10-10 15:35:04,000 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:35:04,225 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-10 15:35:04,550 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:35:04,960 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-10 15:35:05,295 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-10 15:35:05,854 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-10 15:35:06,186 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-10 15:35:06,463 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2018-10-10 15:35:06,720 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 58 [2018-10-10 15:35:07,559 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2018-10-10 15:35:07,943 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2018-10-10 15:35:08,446 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2018-10-10 15:35:08,970 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2018-10-10 15:35:09,608 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 91 [2018-10-10 15:35:10,393 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 110 [2018-10-10 15:35:11,355 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 132 [2018-10-10 15:35:12,050 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 81 [2018-10-10 15:35:12,750 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 112 [2018-10-10 15:35:13,557 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 130 [2018-10-10 15:35:14,475 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 128 [2018-10-10 15:35:15,353 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 146 [2018-10-10 15:35:16,331 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 159 [2018-10-10 15:35:16,940 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 98 [2018-10-10 15:35:17,376 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2018-10-10 15:35:18,110 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2018-10-10 15:35:18,663 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 95 [2018-10-10 15:35:19,151 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-10 15:35:19,565 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-10-10 15:35:19,926 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2018-10-10 15:35:20,803 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-10 15:35:21,120 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2018-10-10 15:35:21,455 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-10 15:35:21,807 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2018-10-10 15:35:22,325 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-10 15:35:22,663 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2018-10-10 15:35:23,231 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-10 15:35:23,645 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2018-10-10 15:35:25,751 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 135 [2018-10-10 15:35:26,055 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2018-10-10 15:35:27,349 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 138 [2018-10-10 15:35:28,573 WARN L178 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 160 [2018-10-10 15:35:29,488 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 154 [2018-10-10 15:35:30,271 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 178 [2018-10-10 15:35:31,155 WARN L178 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 198 [2018-10-10 15:35:31,757 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 158 [2018-10-10 15:35:32,234 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2018-10-10 15:35:32,828 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 147 [2018-10-10 15:35:33,035 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-10-10 15:35:34,097 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-10 15:35:34,777 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-10 15:35:35,404 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 146 [2018-10-10 15:35:36,061 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 150 [2018-10-10 15:35:36,457 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2018-10-10 15:35:37,328 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2018-10-10 15:35:37,946 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2018-10-10 15:35:38,326 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-10 15:35:38,792 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2018-10-10 15:35:40,264 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 88 [2018-10-10 15:35:41,078 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 83 [2018-10-10 15:35:41,659 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2018-10-10 15:35:42,025 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2018-10-10 15:35:42,415 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 83 [2018-10-10 15:35:42,760 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2018-10-10 15:35:43,037 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2018-10-10 15:35:43,374 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2018-10-10 15:35:45,799 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-10-10 15:35:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:45,839 INFO L93 Difference]: Finished difference Result 655 states and 661 transitions. [2018-10-10 15:35:45,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-10 15:35:45,839 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 305 [2018-10-10 15:35:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:45,842 INFO L225 Difference]: With dead ends: 655 [2018-10-10 15:35:45,843 INFO L226 Difference]: Without dead ends: 655 [2018-10-10 15:35:45,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 2 SyntacticMatches, 11 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13268 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=3086, Invalid=45094, Unknown=0, NotChecked=0, Total=48180 [2018-10-10 15:35:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-10-10 15:35:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 524. [2018-10-10 15:35:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-10 15:35:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 529 transitions. [2018-10-10 15:35:45,852 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 529 transitions. Word has length 305 [2018-10-10 15:35:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:45,852 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 529 transitions. [2018-10-10 15:35:45,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-10 15:35:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 529 transitions. [2018-10-10 15:35:45,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-10 15:35:45,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:45,855 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-10 15:35:45,855 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:45,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:45,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1902913287, now seen corresponding path program 8 times [2018-10-10 15:35:45,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:48,694 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-10-10 15:35:48,883 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-10-10 15:35:49,275 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 15:35:49,542 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 15:35:49,812 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2018-10-10 15:35:50,016 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2018-10-10 15:35:50,205 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2018-10-10 15:35:54,946 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-10 15:35:55,295 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2018-10-10 15:35:55,648 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-10-10 15:35:55,952 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-10 15:35:56,226 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-10 15:35:56,533 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-10 15:35:56,858 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-10 15:35:57,334 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2018-10-10 15:35:57,755 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-10 15:35:58,188 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-10 15:35:58,659 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-10 15:35:59,029 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-10 15:35:59,494 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-10 15:35:59,920 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-10 15:36:00,345 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-10-10 15:36:01,053 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-10 15:36:01,498 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-10 15:36:01,886 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-10 15:36:02,270 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-10 15:36:02,761 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-10 15:36:03,467 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-10 15:36:04,196 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-10 15:36:04,768 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60