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/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:09:47,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:09:47,689 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:09:47,701 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:09:47,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:09:47,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:09:47,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:09:47,706 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:09:47,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:09:47,709 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:09:47,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:09:47,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:09:47,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:09:47,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:09:47,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:09:47,714 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:09:47,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:09:47,717 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:09:47,719 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:09:47,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:09:47,722 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:09:47,723 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:09:47,726 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 21:09:47,736 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:09:47,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:09:47,747 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:09:47,747 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:09:47,748 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:09:47,749 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:09:47,749 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:09:47,749 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:09:47,750 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:09:47,750 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:09:47,750 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:09:47,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:09:47,750 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:09:47,751 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:09:47,752 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:09:47,752 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:09:47,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:09:47,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:09:47,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:09:47,848 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:09:47,848 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:09:47,849 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-12 21:09:47,849 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl' [2018-10-12 21:09:47,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:09:47,936 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:09:47,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:09:47,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:09:47,937 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:09:47,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:47,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:47,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:47,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:47,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:48,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:48,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... [2018-10-12 21:09:48,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:09:48,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:09:48,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:09:48,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:09:48,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 21:09:48,093 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:09:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:09:48,722 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:09:48,723 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:48 BoogieIcfgContainer [2018-10-12 21:09:48,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:09:48,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:09:48,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:09:48,730 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:09:48,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:47" (1/2) ... [2018-10-12 21:09:48,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b56c50b and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:09:48, skipping insertion in model container [2018-10-12 21:09:48,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:48" (2/2) ... [2018-10-12 21:09:48,734 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-12 21:09:48,745 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:09:48,754 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:09:48,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:09:48,805 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:09:48,806 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:09:48,806 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:09:48,807 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:09:48,807 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:09:48,807 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:09:48,807 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:09:48,807 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:09:48,808 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:09:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-10-12 21:09:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-12 21:09:48,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:48,856 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:48,858 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:48,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:48,867 INFO L82 PathProgramCache]: Analyzing trace with hash -447702610, now seen corresponding path program 1 times [2018-10-12 21:09:48,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:49,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:09:49,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-12 21:09:49,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 21:09:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 21:09:49,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-12 21:09:49,655 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 12 states. [2018-10-12 21:09:50,470 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:09:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:51,028 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-12 21:09:51,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-12 21:09:51,029 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-10-12 21:09:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:51,042 INFO L225 Difference]: With dead ends: 94 [2018-10-12 21:09:51,043 INFO L226 Difference]: Without dead ends: 94 [2018-10-12 21:09:51,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-12 21:09:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-12 21:09:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2018-10-12 21:09:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-12 21:09:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-12 21:09:51,092 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 69 [2018-10-12 21:09:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:51,093 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-12 21:09:51,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 21:09:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-12 21:09:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-12 21:09:51,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:51,097 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:51,097 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:51,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash 861635709, now seen corresponding path program 1 times [2018-10-12 21:09:51,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:52,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:52,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 21:09:52,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 21:09:52,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 21:09:52,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:09:52,287 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-12 21:09:54,169 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-12 21:09:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:54,522 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-12 21:09:54,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-12 21:09:54,523 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-12 21:09:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:54,527 INFO L225 Difference]: With dead ends: 107 [2018-10-12 21:09:54,527 INFO L226 Difference]: Without dead ends: 107 [2018-10-12 21:09:54,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 21:09:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-12 21:09:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2018-10-12 21:09:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-12 21:09:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-12 21:09:54,539 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 82 [2018-10-12 21:09:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:54,540 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-12 21:09:54,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 21:09:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-12 21:09:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-12 21:09:54,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:54,544 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-10-12 21:09:54,544 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:54,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:54,545 INFO L82 PathProgramCache]: Analyzing trace with hash -499981810, now seen corresponding path program 2 times [2018-10-12 21:09:54,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:55,181 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:09:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:56,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:56,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-12 21:09:56,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-12 21:09:56,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-12 21:09:56,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2018-10-12 21:09:56,279 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 32 states. [2018-10-12 21:09:58,552 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-12 21:09:58,939 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-12 21:09:59,464 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 21:09:59,659 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 21:09:59,856 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-12 21:10:00,096 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-12 21:10:00,459 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-12 21:10:00,772 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-12 21:10:00,970 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-12 21:10:01,225 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-12 21:10:01,469 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2018-10-12 21:10:02,027 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:10:02,448 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-12 21:10:02,675 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-12 21:10:02,849 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:10:03,150 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-12 21:10:03,436 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-12 21:10:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:03,514 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-12 21:10:03,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-12 21:10:03,515 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 95 [2018-10-12 21:10:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:03,517 INFO L225 Difference]: With dead ends: 120 [2018-10-12 21:10:03,517 INFO L226 Difference]: Without dead ends: 120 [2018-10-12 21:10:03,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=732, Invalid=3824, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 21:10:03,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-12 21:10:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2018-10-12 21:10:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-12 21:10:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-12 21:10:03,529 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 95 [2018-10-12 21:10:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:03,529 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-12 21:10:03,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-12 21:10:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-12 21:10:03,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-12 21:10:03,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:03,532 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:03,532 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:03,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash -912664547, now seen corresponding path program 3 times [2018-10-12 21:10:03,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:05,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:05,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-12 21:10:05,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-12 21:10:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-12 21:10:05,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1469, Unknown=0, NotChecked=0, Total=1560 [2018-10-12 21:10:05,472 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 40 states. [2018-10-12 21:10:06,782 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-12 21:10:07,328 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-12 21:10:07,573 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-12 21:10:07,816 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:10:08,021 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-12 21:10:08,523 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 21:10:08,724 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-12 21:10:09,046 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-12 21:10:09,310 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2018-10-12 21:10:09,680 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-12 21:10:09,986 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-12 21:10:10,215 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2018-10-12 21:10:10,476 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2018-10-12 21:10:10,729 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2018-10-12 21:10:10,934 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 21:10:11,180 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-12 21:10:11,563 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-12 21:10:11,864 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-12 21:10:12,135 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-12 21:10:12,452 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 21:10:12,721 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-12 21:10:12,908 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-12 21:10:13,252 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 21:10:13,484 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-12 21:10:13,678 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-12 21:10:13,914 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-12 21:10:14,256 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-12 21:10:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:14,294 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-12 21:10:14,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-12 21:10:14,294 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 108 [2018-10-12 21:10:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:14,297 INFO L225 Difference]: With dead ends: 133 [2018-10-12 21:10:14,297 INFO L226 Difference]: Without dead ends: 133 [2018-10-12 21:10:14,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=998, Invalid=5808, Unknown=0, NotChecked=0, Total=6806 [2018-10-12 21:10:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-12 21:10:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2018-10-12 21:10:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-12 21:10:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-12 21:10:14,308 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 108 [2018-10-12 21:10:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:14,309 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-12 21:10:14,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-12 21:10:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-12 21:10:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-12 21:10:14,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:14,311 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:14,312 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:14,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:14,312 INFO L82 PathProgramCache]: Analyzing trace with hash -206474642, now seen corresponding path program 4 times [2018-10-12 21:10:14,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:15,537 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2018-10-12 21:10:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:17,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:17,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-12 21:10:17,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-12 21:10:17,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-12 21:10:17,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2054, Unknown=0, NotChecked=0, Total=2162 [2018-10-12 21:10:17,979 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 47 states. [2018-10-12 21:10:19,785 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-12 21:10:20,080 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-12 21:10:20,337 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-12 21:10:21,272 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 21:10:21,820 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-12 21:10:22,176 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-12 21:10:22,428 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-10-12 21:10:22,788 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-12 21:10:23,146 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2018-10-12 21:10:23,385 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 21:10:23,562 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-12 21:10:23,787 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-12 21:10:24,191 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-12 21:10:24,494 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-12 21:10:24,847 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-12 21:10:25,211 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2018-10-12 21:10:25,428 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 21:10:25,892 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 21:10:26,147 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-12 21:10:26,534 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-10-12 21:10:26,784 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 21:10:27,000 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 21:10:27,271 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 21:10:27,477 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-12 21:10:27,646 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 21:10:27,902 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 21:10:28,424 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 21:10:28,618 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 21:10:28,954 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-12 21:10:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:29,364 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-12 21:10:29,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-12 21:10:29,366 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 121 [2018-10-12 21:10:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:29,367 INFO L225 Difference]: With dead ends: 146 [2018-10-12 21:10:29,368 INFO L226 Difference]: Without dead ends: 146 [2018-10-12 21:10:29,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1251, Invalid=8451, Unknown=0, NotChecked=0, Total=9702 [2018-10-12 21:10:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-12 21:10:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2018-10-12 21:10:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-12 21:10:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-12 21:10:29,380 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 121 [2018-10-12 21:10:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:29,380 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-12 21:10:29,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-12 21:10:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-12 21:10:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-12 21:10:29,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:29,383 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:29,383 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:29,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash 158393277, now seen corresponding path program 5 times [2018-10-12 21:10:29,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:30,008 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:10:31,208 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-12 21:10:31,774 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2018-10-12 21:10:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:33,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:33,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-12 21:10:33,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-12 21:10:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-12 21:10:33,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2018-10-12 21:10:33,668 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 52 states. [2018-10-12 21:10:34,869 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-12 21:10:36,171 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 21:10:36,429 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-12 21:10:37,287 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 21:10:37,549 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-12 21:10:37,951 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:10:38,512 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-12 21:10:38,879 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:10:39,327 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2018-10-12 21:10:39,851 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2018-10-12 21:10:40,168 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 21:10:40,418 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 21:10:40,707 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-12 21:10:41,131 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:10:41,439 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 21:10:41,881 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2018-10-12 21:10:42,410 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2018-10-12 21:10:42,903 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-10-12 21:10:43,383 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-12 21:10:44,038 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-12 21:10:44,660 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2018-10-12 21:10:45,183 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2018-10-12 21:10:45,606 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-12 21:10:46,084 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-12 21:10:46,563 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2018-10-12 21:10:46,974 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-12 21:10:47,436 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-12 21:10:47,928 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-12 21:10:48,495 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2018-10-12 21:10:48,889 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-12 21:10:49,377 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2018-10-12 21:10:49,804 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-12 21:10:50,222 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-12 21:10:50,632 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-12 21:10:51,086 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-12 21:10:51,342 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 21:10:51,582 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 21:10:51,849 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-12 21:10:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:51,886 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-12 21:10:51,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-12 21:10:51,895 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 134 [2018-10-12 21:10:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:51,896 INFO L225 Difference]: With dead ends: 159 [2018-10-12 21:10:51,896 INFO L226 Difference]: Without dead ends: 159 [2018-10-12 21:10:51,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=1683, Invalid=10089, Unknown=0, NotChecked=0, Total=11772 [2018-10-12 21:10:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-12 21:10:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2018-10-12 21:10:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-12 21:10:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-12 21:10:51,908 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 134 [2018-10-12 21:10:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:51,909 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-12 21:10:51,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-12 21:10:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-12 21:10:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-12 21:10:51,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:51,915 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:51,916 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:51,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash 461523662, now seen corresponding path program 6 times [2018-10-12 21:10:51,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:52,621 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:10:53,291 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-12 21:10:53,429 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-12 21:10:53,947 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-12 21:10:54,126 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-12 21:10:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:57,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:57,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-12 21:10:57,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-12 21:10:57,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-12 21:10:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:10:57,483 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 57 states. [2018-10-12 21:11:00,011 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-12 21:11:00,325 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-12 21:11:01,094 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-12 21:11:01,425 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 21:11:01,767 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:11:02,182 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 21:11:02,811 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-12 21:11:03,300 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 21:11:03,967 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2018-10-12 21:11:04,666 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2018-10-12 21:11:05,087 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 21:11:05,492 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:11:06,137 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-12 21:11:06,984 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2018-10-12 21:11:07,661 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2018-10-12 21:11:08,395 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 164 [2018-10-12 21:11:09,300 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 187 [2018-10-12 21:11:09,929 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2018-10-12 21:11:10,437 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-12 21:11:11,110 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2018-10-12 21:11:11,995 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 189 [2018-10-12 21:11:12,758 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 192 [2018-10-12 21:11:13,307 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-12 21:11:14,001 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 191 [2018-10-12 21:11:14,643 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2018-10-12 21:11:15,205 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2018-10-12 21:11:15,822 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-12 21:11:16,463 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-12 21:11:17,139 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 178 [2018-10-12 21:11:17,682 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-12 21:11:18,271 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 177 [2018-10-12 21:11:18,834 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-12 21:11:19,414 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2018-10-12 21:11:19,964 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-12 21:11:20,557 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-12 21:11:21,146 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-12 21:11:21,658 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-12 21:11:22,220 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2018-10-12 21:11:22,748 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2018-10-12 21:11:23,239 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-12 21:11:23,847 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2018-10-12 21:11:24,230 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 21:11:24,551 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-12 21:11:24,889 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-12 21:11:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:24,938 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-12 21:11:24,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-12 21:11:24,939 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 147 [2018-10-12 21:11:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:24,940 INFO L225 Difference]: With dead ends: 172 [2018-10-12 21:11:24,941 INFO L226 Difference]: Without dead ends: 172 [2018-10-12 21:11:24,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=2001, Invalid=12279, Unknown=0, NotChecked=0, Total=14280 [2018-10-12 21:11:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-12 21:11:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2018-10-12 21:11:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-12 21:11:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-12 21:11:24,951 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 147 [2018-10-12 21:11:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:24,951 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-12 21:11:24,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-12 21:11:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-12 21:11:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-12 21:11:24,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:24,954 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:24,954 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:24,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash -387274915, now seen corresponding path program 7 times [2018-10-12 21:11:24,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:25,785 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 21:11:25,943 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 21:11:26,097 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-12 21:11:26,246 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-12 21:11:26,878 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-12 21:11:27,754 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-12 21:11:27,956 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-12 21:11:28,225 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-12 21:11:28,404 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-12 21:11:28,941 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-12 21:11:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:32,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:32,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-12 21:11:32,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-12 21:11:32,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-12 21:11:32,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3635, Unknown=0, NotChecked=0, Total=3782 [2018-10-12 21:11:32,046 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 62 states. [2018-10-12 21:11:34,685 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-12 21:11:35,072 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-12 21:11:35,306 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-12 21:11:35,989 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 21:11:36,390 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-12 21:11:36,813 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 21:11:37,313 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 21:11:38,065 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-12 21:11:38,631 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-12 21:11:39,376 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 179 [2018-10-12 21:11:40,256 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 206 [2018-10-12 21:11:40,768 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-12 21:11:41,168 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-12 21:11:41,936 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 193 [2018-10-12 21:11:42,657 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-12 21:11:43,173 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 21:11:43,903 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 185 [2018-10-12 21:11:44,815 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-12 21:11:45,317 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-12 21:11:45,693 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 21:11:46,137 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:11:46,806 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-12 21:11:47,291 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-12 21:11:47,708 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-12 21:11:48,189 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-12 21:11:48,670 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-12 21:11:49,053 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:11:49,807 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2018-10-12 21:11:50,752 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2018-10-12 21:11:51,515 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2018-10-12 21:11:51,927 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-12 21:11:52,390 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 21:11:52,840 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-12 21:11:53,205 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 21:11:53,619 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:11:54,247 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 21:11:54,703 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:11:55,138 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:11:55,561 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:11:55,982 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:11:56,345 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:11:57,045 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2018-10-12 21:11:57,660 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-12 21:11:58,091 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:11:58,470 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 21:11:58,866 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:11:59,263 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:11:59,597 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 21:12:00,365 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:12:00,753 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:12:01,089 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 21:12:01,491 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 21:12:02,210 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 21:12:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:02,311 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-12 21:12:02,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-12 21:12:02,312 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 160 [2018-10-12 21:12:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:02,314 INFO L225 Difference]: With dead ends: 185 [2018-10-12 21:12:02,314 INFO L226 Difference]: Without dead ends: 185 [2018-10-12 21:12:02,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2847 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=1846, Invalid=15710, Unknown=0, NotChecked=0, Total=17556 [2018-10-12 21:12:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-12 21:12:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2018-10-12 21:12:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-12 21:12:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-12 21:12:02,329 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 160 [2018-10-12 21:12:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:02,335 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-12 21:12:02,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-12 21:12:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-12 21:12:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-12 21:12:02,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:02,340 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:02,340 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:02,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash 64711470, now seen corresponding path program 8 times [2018-10-12 21:12:02,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:03,721 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-12 21:12:03,992 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-12 21:12:04,265 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-12 21:12:04,540 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-12 21:12:04,785 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-12 21:12:05,127 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-12 21:12:05,380 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-12 21:12:05,700 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2018-10-12 21:12:06,024 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-12 21:12:06,247 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-12 21:12:06,462 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-12 21:12:06,725 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-12 21:12:07,054 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-12 21:12:07,444 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-12 21:12:07,772 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:12:08,092 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:12:08,396 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-12 21:12:08,716 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-12 21:12:09,016 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-12 21:12:09,275 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-12 21:12:09,530 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-12 21:12:09,806 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-12 21:12:10,091 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-12 21:12:10,409 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-12 21:12:10,612 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-12 21:12:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:14,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:14,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-12 21:12:14,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-12 21:12:14,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-12 21:12:14,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 21:12:14,284 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 68 states. [2018-10-12 21:12:17,370 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-12 21:12:17,800 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-12 21:12:18,151 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 21:12:18,956 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-10-12 21:12:19,441 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 21:12:19,933 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-12 21:12:20,601 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-12 21:12:21,500 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-12 21:12:22,202 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-12 21:12:23,042 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 204 [2018-10-12 21:12:24,054 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 236 [2018-10-12 21:12:24,655 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-12 21:12:25,128 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 21:12:26,120 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 219 [2018-10-12 21:12:26,946 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-12 21:12:27,542 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-12 21:12:28,388 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-12 21:12:29,397 WARN L178 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 249 [2018-10-12 21:12:30,002 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-12 21:12:30,462 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-10-12 21:12:31,380 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2018-10-12 21:12:32,175 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:12:32,738 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-12 21:12:33,233 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-12 21:12:33,813 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-10-12 21:12:34,370 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-12 21:12:34,812 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 21:12:35,647 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2018-10-12 21:12:36,498 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-12 21:12:37,064 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-12 21:12:37,571 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-12 21:12:38,137 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 21:12:38,679 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-12 21:12:39,110 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 21:12:39,957 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2018-10-12 21:12:40,790 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-12 21:12:41,406 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:12:41,885 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-12 21:12:42,419 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-12 21:12:42,956 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 21:12:43,382 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-12 21:12:44,135 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2018-10-12 21:12:44,874 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 21:12:45,393 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-12 21:12:45,844 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:12:46,381 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 21:12:46,855 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-12 21:12:47,256 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:12:47,981 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2018-10-12 21:12:48,692 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 21:12:49,178 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-12 21:12:49,601 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:12:50,059 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:12:50,509 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:12:50,895 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:12:51,796 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:12:52,239 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:12:52,622 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:12:53,063 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 21:12:53,891 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-12 21:12:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:54,010 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-12 21:12:54,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-12 21:12:54,011 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 173 [2018-10-12 21:12:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:54,013 INFO L225 Difference]: With dead ends: 198 [2018-10-12 21:12:54,013 INFO L226 Difference]: Without dead ends: 198 [2018-10-12 21:12:54,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=2069, Invalid=19101, Unknown=0, NotChecked=0, Total=21170 [2018-10-12 21:12:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-12 21:12:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2018-10-12 21:12:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-12 21:12:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-12 21:12:54,022 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 173 [2018-10-12 21:12:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:54,022 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-12 21:12:54,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-12 21:12:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-12 21:12:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-12 21:12:54,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:54,024 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:54,025 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:54,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2054085891, now seen corresponding path program 9 times [2018-10-12 21:12:54,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:55,660 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-12 21:12:56,298 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-12 21:12:56,751 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-12 21:12:57,202 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2018-10-12 21:12:57,607 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-12 21:12:58,058 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-12 21:12:58,455 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-12 21:12:58,972 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-12 21:12:59,479 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-12 21:12:59,895 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-12 21:13:00,319 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-12 21:13:00,748 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-12 21:13:01,194 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2018-10-12 21:13:01,719 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 66 [2018-10-12 21:13:02,164 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-12 21:13:02,622 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-12 21:13:03,056 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2018-10-12 21:13:03,552 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2018-10-12 21:13:04,039 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 57 [2018-10-12 21:13:04,346 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2018-10-12 21:13:04,646 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-12 21:13:04,945 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-12 21:13:05,242 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-12 21:13:05,596 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-12 21:13:05,944 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-12 21:13:06,516 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-10-12 21:13:06,762 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-12 21:13:06,991 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-12 21:13:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:10,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:10,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-12 21:13:10,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-12 21:13:10,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-12 21:13:10,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-12 21:13:10,545 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 76 states. [2018-10-12 21:13:13,822 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2018-10-12 21:13:14,289 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2018-10-12 21:13:14,607 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-12 21:13:15,544 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 21:13:16,106 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 21:13:16,740 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-12 21:13:17,467 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2018-10-12 21:13:18,537 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-12 21:13:19,341 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-12 21:13:20,303 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 239 [2018-10-12 21:13:21,509 WARN L178 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 278 [2018-10-12 21:13:22,340 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2018-10-12 21:13:22,935 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-12 21:13:23,641 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2018-10-12 21:13:24,590 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-12 21:13:25,271 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2018-10-12 21:13:25,792 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-12 21:13:26,377 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2018-10-12 21:13:27,096 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-12 21:13:27,650 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-12 21:13:28,804 WARN L178 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 260 [2018-10-12 21:13:30,005 WARN L178 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2018-10-12 21:13:31,414 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 264 DAG size of output: 264 [2018-10-12 21:13:32,747 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 267 DAG size of output: 267 [2018-10-12 21:13:33,610 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 240 [2018-10-12 21:13:34,615 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 279 [2018-10-12 21:13:35,640 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 276 [2018-10-12 21:13:36,542 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 237 [2018-10-12 21:13:37,737 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-12 21:13:39,187 WARN L178 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-12 21:13:40,413 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-12 21:13:41,313 WARN L178 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-12 21:13:42,372 WARN L178 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 271 [2018-10-12 21:13:43,459 WARN L178 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 270 [2018-10-12 21:13:44,335 WARN L178 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 238 [2018-10-12 21:13:45,365 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 242 [2018-10-12 21:13:46,428 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-12 21:13:47,490 WARN L178 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2018-10-12 21:13:48,350 WARN L178 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 234 [2018-10-12 21:13:49,302 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 261 [2018-10-12 21:13:50,268 WARN L178 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 260 [2018-10-12 21:13:51,154 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 233 [2018-10-12 21:13:52,079 WARN L178 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2018-10-12 21:13:53,116 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-12 21:13:54,097 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-12 21:13:54,951 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-12 21:13:55,913 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 249 [2018-10-12 21:13:56,892 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 248 [2018-10-12 21:13:57,813 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-12 21:13:58,808 WARN L178 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 233 [2018-10-12 21:13:59,801 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-12 21:14:00,802 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-12 21:14:01,618 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2018-10-12 21:14:02,516 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-12 21:14:03,513 WARN L178 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 233 [2018-10-12 21:14:04,367 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-12 21:14:05,249 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-12 21:14:06,145 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-12 21:14:07,032 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-12 21:14:07,837 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 213 [2018-10-12 21:14:08,757 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-12 21:14:09,652 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 219 [2018-10-12 21:14:10,481 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2018-10-12 21:14:11,308 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 212 [2018-10-12 21:14:12,201 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2018-10-12 21:14:12,753 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:14:13,350 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-12 21:14:13,908 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-12 21:14:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:14:13,984 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-12 21:14:13,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-12 21:14:13,985 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 186 [2018-10-12 21:14:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:14:13,986 INFO L225 Difference]: With dead ends: 211 [2018-10-12 21:14:13,986 INFO L226 Difference]: Without dead ends: 211 [2018-10-12 21:14:13,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 73.5s TimeCoverageRelationStatistics Valid=3613, Invalid=22469, Unknown=0, NotChecked=0, Total=26082 [2018-10-12 21:14:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-12 21:14:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2018-10-12 21:14:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-12 21:14:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-12 21:14:13,992 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 186 [2018-10-12 21:14:13,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:14:13,993 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-12 21:14:13,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-12 21:14:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-12 21:14:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-12 21:14:13,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:14:13,994 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:14:13,994 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:14:13,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:14:13,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1601360782, now seen corresponding path program 10 times [2018-10-12 21:14:13,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:14:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:14:15,591 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-12 21:14:16,126 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-12 21:14:16,640 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-12 21:14:17,147 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 64 [2018-10-12 21:14:17,623 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-12 21:14:18,099 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-12 21:14:18,610 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-12 21:14:19,191 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 67 [2018-10-12 21:14:19,791 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-12 21:14:20,264 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-12 21:14:20,735 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-12 21:14:21,200 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-12 21:14:21,757 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-12 21:14:22,381 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2018-10-12 21:14:22,961 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-12 21:14:23,575 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-12 21:14:24,126 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-12 21:14:24,690 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-12 21:14:25,290 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2018-10-12 21:14:25,726 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-12 21:14:26,152 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-12 21:14:26,593 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-12 21:14:27,008 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-12 21:14:27,415 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-12 21:14:27,889 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-12 21:14:28,207 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:14:28,581 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-12 21:14:28,901 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-12 21:14:29,224 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-12 21:14:29,547 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-12 21:14:29,868 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-12 21:14:30,126 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-12 21:14:30,382 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-12 21:14:30,635 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-12 21:14:30,885 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-12 21:14:31,136 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-12 21:14:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:14:35,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:14:35,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-12 21:14:35,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-12 21:14:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-12 21:14:35,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2018-10-12 21:14:35,088 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 81 states. [2018-10-12 21:14:38,418 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-12 21:14:39,036 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-12 21:14:39,387 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-12 21:14:40,331 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:14:40,922 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-12 21:14:41,572 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-12 21:14:42,352 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2018-10-12 21:14:43,473 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2018-10-12 21:14:44,432 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-12 21:14:45,544 WARN L178 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 251 [2018-10-12 21:14:46,881 WARN L178 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 291 [2018-10-12 21:14:47,667 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-12 21:14:48,307 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-12 21:14:49,499 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 264 [2018-10-12 21:14:50,856 WARN L178 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 267 [2018-10-12 21:14:52,050 WARN L178 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-12 21:14:53,397 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 270 DAG size of output: 253 [2018-10-12 21:14:55,077 WARN L178 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 322 DAG size of output: 303 [2018-10-12 21:14:56,281 WARN L178 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 301 [2018-10-12 21:14:57,246 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 251 [2018-10-12 21:14:58,482 WARN L178 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 267 [2018-10-12 21:15:00,018 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 279 DAG size of output: 272 [2018-10-12 21:15:01,366 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 283 DAG size of output: 275 [2018-10-12 21:15:02,400 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 258 [2018-10-12 21:15:03,532 WARN L178 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 299 [2018-10-12 21:15:04,832 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 297 [2018-10-12 21:15:05,825 WARN L178 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 256 [2018-10-12 21:15:06,965 WARN L178 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 268 [2018-10-12 21:15:08,148 WARN L178 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 271 [2018-10-12 21:15:09,420 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 282 DAG size of output: 274 [2018-10-12 21:15:10,375 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 251 [2018-10-12 21:15:11,465 WARN L178 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-12 21:15:12,639 WARN L178 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 283 [2018-10-12 21:15:13,630 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 249 [2018-10-12 21:15:14,825 WARN L178 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2018-10-12 21:15:15,967 WARN L178 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 258 [2018-10-12 21:15:17,130 WARN L178 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 261 [2018-10-12 21:15:18,082 WARN L178 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 246 [2018-10-12 21:15:19,172 WARN L178 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 275 [2018-10-12 21:15:20,366 WARN L178 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 273 [2018-10-12 21:15:21,347 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 244 [2018-10-12 21:15:22,458 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 250 [2018-10-12 21:15:23,627 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 253 [2018-10-12 21:15:24,828 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 256 [2018-10-12 21:15:25,796 WARN L178 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 240 [2018-10-12 21:15:26,847 WARN L178 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 263 [2018-10-12 21:15:27,928 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 261 [2018-10-12 21:15:28,882 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-12 21:15:30,058 WARN L178 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 252 [2018-10-12 21:15:31,213 WARN L178 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 255 [2018-10-12 21:15:32,407 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 258 [2018-10-12 21:15:33,363 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-12 21:15:34,457 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 257 [2018-10-12 21:15:35,624 WARN L178 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2018-10-12 21:15:36,607 WARN L178 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 232 [2018-10-12 21:15:37,638 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 238 [2018-10-12 21:15:38,709 WARN L178 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 241 [2018-10-12 21:15:39,790 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 244 [2018-10-12 21:15:40,798 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-12 21:15:41,808 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 243 [2018-10-12 21:15:42,811 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-12 21:15:43,735 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-12 21:15:44,711 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-12 21:15:45,836 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-12 21:15:46,891 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 238 [2018-10-12 21:15:47,861 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 223 [2018-10-12 21:15:48,865 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 229 [2018-10-12 21:15:49,834 WARN L178 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 224 [2018-10-12 21:15:50,822 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-12 21:15:51,844 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-12 21:15:52,475 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 21:15:53,088 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:15:53,718 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-12 21:15:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:53,787 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-12 21:15:53,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-12 21:15:53,787 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 199 [2018-10-12 21:15:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:53,789 INFO L225 Difference]: With dead ends: 224 [2018-10-12 21:15:53,789 INFO L226 Difference]: Without dead ends: 224 [2018-10-12 21:15:53,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6186 ImplicationChecksByTransitivity, 94.0s TimeCoverageRelationStatistics Valid=4203, Invalid=25209, Unknown=0, NotChecked=0, Total=29412 [2018-10-12 21:15:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-12 21:15:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2018-10-12 21:15:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-12 21:15:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-12 21:15:53,794 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 199 [2018-10-12 21:15:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:53,795 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-12 21:15:53,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-12 21:15:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-12 21:15:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-12 21:15:53,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:15:53,796 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:15:53,796 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:15:53,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:15:53,797 INFO L82 PathProgramCache]: Analyzing trace with hash -999401827, now seen corresponding path program 11 times [2018-10-12 21:15:53,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:15:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:15:55,739 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-12 21:15:56,382 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-12 21:15:57,043 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-12 21:15:57,667 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 69 [2018-10-12 21:15:58,306 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-12 21:15:58,932 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-12 21:15:59,598 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-12 21:16:00,493 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 72 [2018-10-12 21:16:01,347 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-12 21:16:02,001 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-12 21:16:02,635 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 64 [2018-10-12 21:16:03,262 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 64 [2018-10-12 21:16:03,971 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 75 [2018-10-12 21:16:04,720 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 77 [2018-10-12 21:16:05,404 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 72 [2018-10-12 21:16:06,189 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 72 [2018-10-12 21:16:06,881 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2018-10-12 21:16:07,579 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2018-10-12 21:16:08,257 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2018-10-12 21:16:08,804 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 69 [2018-10-12 21:16:09,346 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2018-10-12 21:16:09,887 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2018-10-12 21:16:10,435 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2018-10-12 21:16:11,102 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2018-10-12 21:16:11,669 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 62 [2018-10-12 21:16:12,028 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-12 21:16:12,373 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-12 21:16:12,733 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-12 21:16:13,103 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-12 21:16:13,474 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-12 21:16:13,896 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:16:14,203 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-12 21:16:14,503 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-12 21:16:14,804 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-12 21:16:15,097 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-12 21:16:15,379 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-12 21:16:15,698 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-12 21:16:15,958 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-12 21:16:16,227 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-12 21:16:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:16:21,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:16:21,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-12 21:16:21,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-12 21:16:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-12 21:16:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=7052, Unknown=0, NotChecked=0, Total=7482 [2018-10-12 21:16:21,203 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 87 states. [2018-10-12 21:16:23,213 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-12 21:16:25,795 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2018-10-12 21:16:26,461 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 137 [2018-10-12 21:16:26,871 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 21:16:28,122 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-12 21:16:28,830 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:16:29,588 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-12 21:16:30,484 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-10-12 21:16:31,949 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2018-10-12 21:16:32,998 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2018-10-12 21:16:34,217 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 268 [2018-10-12 21:16:35,655 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 352 DAG size of output: 311 [2018-10-12 21:16:36,632 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-12 21:16:37,346 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2018-10-12 21:16:38,672 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 284 [2018-10-12 21:16:40,428 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 296 DAG size of output: 287 [2018-10-12 21:16:42,017 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 301 DAG size of output: 290 [2018-10-12 21:16:43,595 WARN L178 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 290 DAG size of output: 273 [2018-10-12 21:16:45,465 WARN L178 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 348 DAG size of output: 325 [2018-10-12 21:16:46,849 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 333 DAG size of output: 325 [2018-10-12 21:16:47,923 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2018-10-12 21:16:49,152 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 280 [2018-10-12 21:16:50,745 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 293 DAG size of output: 283 [2018-10-12 21:16:52,231 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 298 DAG size of output: 286 [2018-10-12 21:16:53,278 WARN L178 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 267 [2018-10-12 21:16:54,529 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 336 DAG size of output: 314 [2018-10-12 21:16:55,850 WARN L178 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 315 [2018-10-12 21:16:57,012 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 268 [2018-10-12 21:16:58,402 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 305 DAG size of output: 296 [2018-10-12 21:17:00,178 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 310 DAG size of output: 297 [2018-10-12 21:17:01,710 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 315 DAG size of output: 300 [2018-10-12 21:17:02,856 WARN L178 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 266 [2018-10-12 21:17:04,147 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 330 DAG size of output: 306 [2018-10-12 21:17:05,515 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 321 DAG size of output: 309 [2018-10-12 21:17:06,618 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 269 [2018-10-12 21:17:08,020 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 284 DAG size of output: 273 [2018-10-12 21:17:09,301 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 289 DAG size of output: 276 [2018-10-12 21:17:10,609 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 294 DAG size of output: 279 [2018-10-12 21:17:11,648 WARN L178 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 261 [2018-10-12 21:17:12,943 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 320 DAG size of output: 296 [2018-10-12 21:17:14,286 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 311 DAG size of output: 295 [2018-10-12 21:17:15,399 WARN L178 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 260 [2018-10-12 21:17:16,620 WARN L178 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 273 [2018-10-12 21:17:17,955 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 290 DAG size of output: 276 [2018-10-12 21:17:19,280 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 295 DAG size of output: 279 [2018-10-12 21:17:20,313 WARN L178 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 254 [2018-10-12 21:17:21,531 WARN L178 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 282 [2018-10-12 21:17:22,764 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 285 [2018-10-12 21:17:23,815 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 257 [2018-10-12 21:17:24,970 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 261 [2018-10-12 21:17:26,176 WARN L178 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 264 [2018-10-12 21:17:27,438 WARN L178 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 267 [2018-10-12 21:17:28,477 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-12 21:17:29,647 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 272 [2018-10-12 21:17:30,860 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 275 [2018-10-12 21:17:31,943 WARN L178 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 252 [2018-10-12 21:17:33,142 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 256 [2018-10-12 21:17:34,357 WARN L178 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 259 [2018-10-12 21:17:35,613 WARN L178 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 262 [2018-10-12 21:17:36,645 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 243 [2018-10-12 21:17:37,812 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 260 [2018-10-12 21:17:39,009 WARN L178 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 263 [2018-10-12 21:17:40,048 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 246 [2018-10-12 21:17:41,150 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-12 21:17:42,309 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 253 [2018-10-12 21:17:43,517 WARN L178 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 256 [2018-10-12 21:17:44,543 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 239 [2018-10-12 21:17:45,640 WARN L178 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 252 [2018-10-12 21:17:46,763 WARN L178 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 252 [2018-10-12 21:17:47,772 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-12 21:17:48,835 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 243 [2018-10-12 21:17:49,960 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 246 [2018-10-12 21:17:51,102 WARN L178 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 249 [2018-10-12 21:17:52,114 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-12 21:17:53,170 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 238 [2018-10-12 21:17:54,214 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 238 [2018-10-12 21:17:55,222 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 232 [2018-10-12 21:17:56,341 WARN L178 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-12 21:17:57,019 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-12 21:17:57,683 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-12 21:17:58,394 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-12 21:17:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:17:58,493 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-12 21:17:58,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-12 21:17:58,493 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 212 [2018-10-12 21:17:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:17:58,495 INFO L225 Difference]: With dead ends: 237 [2018-10-12 21:17:58,495 INFO L226 Difference]: Without dead ends: 237 [2018-10-12 21:17:58,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 115.8s TimeCoverageRelationStatistics Valid=4610, Invalid=29430, Unknown=0, NotChecked=0, Total=34040 [2018-10-12 21:17:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-12 21:17:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 226. [2018-10-12 21:17:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-12 21:17:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-12 21:17:58,501 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 212 [2018-10-12 21:17:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:17:58,502 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-12 21:17:58,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-12 21:17:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-12 21:17:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-12 21:17:58,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:17:58,503 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:17:58,504 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:17:58,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:17:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1233028078, now seen corresponding path program 12 times [2018-10-12 21:17:58,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:17:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:18:01,131 WARN L178 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-12 21:18:02,196 WARN L178 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-12 21:18:03,265 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-12 21:18:04,306 WARN L178 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 75 [2018-10-12 21:18:05,192 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-12 21:18:06,214 WARN L178 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-12 21:18:07,258 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-12 21:18:08,563 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 301 DAG size of output: 78 [2018-10-12 21:18:09,845 WARN L178 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-12 21:18:10,940 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-12 21:18:12,036 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-12 21:18:13,101 WARN L178 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-12 21:18:14,284 WARN L178 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 81 [2018-10-12 21:18:15,509 WARN L178 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 83 [2018-10-12 21:18:16,654 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-12 21:18:17,792 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-12 21:18:18,950 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-12 21:18:20,014 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-12 21:18:21,099 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 77 [2018-10-12 21:18:21,933 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 78 [2018-10-12 21:18:22,755 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 75 [2018-10-12 21:18:23,586 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 75 [2018-10-12 21:18:24,403 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 73 [2018-10-12 21:18:25,292 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-12 21:18:26,163 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 68 [2018-10-12 21:18:26,759 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-12 21:18:27,347 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-12 21:18:27,974 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-12 21:18:28,563 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-12 21:18:29,145 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-12 21:18:29,802 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2018-10-12 21:18:30,283 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-12 21:18:30,757 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-12 21:18:31,242 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-12 21:18:31,728 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-12 21:18:32,196 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-12 21:18:32,721 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-12 21:18:33,087 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:18:33,439 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-12 21:18:33,794 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-12 21:18:34,162 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-12 21:18:34,523 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-12 21:18:34,855 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-12 21:18:35,139 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-12 21:18:35,423 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-12 21:18:35,710 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-12 21:18:35,983 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-12 21:18:36,249 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-12 21:18:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:18:41,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:18:41,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-12 21:18:41,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-12 21:18:41,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-12 21:18:41,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=8110, Unknown=0, NotChecked=0, Total=8556 [2018-10-12 21:18:41,185 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 93 states. [2018-10-12 21:18:45,433 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-12 21:18:46,112 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 144 [2018-10-12 21:18:46,558 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-10-12 21:18:47,878 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 185