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/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:32:17,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:32:17,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:32:17,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:32:17,797 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:32:17,802 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:32:17,803 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:32:17,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:32:17,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:32:17,811 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:32:17,812 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:32:17,812 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:32:17,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:32:17,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:32:17,817 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:32:17,825 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:32:17,826 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:32:17,828 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:32:17,833 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:32:17,837 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:32:17,840 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:32:17,841 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:32:17,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:32:17,846 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:32:17,846 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:32:17,847 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:32:17,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:32:17,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:32:17,851 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:32:17,852 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:32:17,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:32:17,854 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 15:32:17,855 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 15:32:17,855 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 15:32:17,856 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 15:32:17,857 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 15:32:17,858 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:32:17,875 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:32:17,875 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:32:17,876 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:32:17,877 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:32:17,877 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:32:17,877 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:32:17,878 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:32:17,878 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:32:17,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:32:17,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:32:17,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:32:17,879 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:32:17,879 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:32:17,880 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:32:17,880 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:32:17,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:32:17,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:32:17,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:32:17,963 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:32:17,964 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:32:17,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 15:32:17,965 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-10 15:32:18,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:32:18,042 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:32:18,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:32:18,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:32:18,043 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:32:18,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... [2018-10-10 15:32:18,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:32:18,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:32:18,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:32:18,099 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:32:18,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:32:18,172 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:32:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:32:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:32:18,800 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:32:18,801 INFO L202 PluginConnector]: Adding new model cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:32:18 BoogieIcfgContainer [2018-10-10 15:32:18,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:32:18,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:32:18,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:32:18,805 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:32:18,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:18" (1/2) ... [2018-10-10 15:32:18,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d651112 and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:32:18, skipping insertion in model container [2018-10-10 15:32:18,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:32:18" (2/2) ... [2018-10-10 15:32:18,808 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 15:32:18,815 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:32:18,823 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:32:18,839 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:32:18,868 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:32:18,869 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:32:18,869 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:32:18,869 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:32:18,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:32:18,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:32:18,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:32:18,870 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:32:18,870 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:32:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-10-10 15:32:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-10 15:32:18,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:18,901 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] [2018-10-10 15:32:18,902 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:18,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1572747597, now seen corresponding path program 1 times [2018-10-10 15:32:18,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:19,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:32:19,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 15:32:19,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:32:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:32:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:32:19,763 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 12 states. [2018-10-10 15:32:20,452 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:32:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:20,971 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-10 15:32:20,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 15:32:20,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-10-10 15:32:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:20,985 INFO L225 Difference]: With dead ends: 92 [2018-10-10 15:32:20,986 INFO L226 Difference]: Without dead ends: 92 [2018-10-10 15:32:20,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:32:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-10 15:32:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2018-10-10 15:32:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-10 15:32:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-10 15:32:21,035 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 67 [2018-10-10 15:32:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:21,036 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-10 15:32:21,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:32:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-10 15:32:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:32:21,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:21,040 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] [2018-10-10 15:32:21,041 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:21,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:21,041 INFO L82 PathProgramCache]: Analyzing trace with hash 950296764, now seen corresponding path program 1 times [2018-10-10 15:32:21,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:21,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:21,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:32:21,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:32:21,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:32:21,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:32:21,846 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 22 states. [2018-10-10 15:32:24,244 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-10 15:32:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:24,627 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-10 15:32:24,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 15:32:24,628 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2018-10-10 15:32:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:24,631 INFO L225 Difference]: With dead ends: 105 [2018-10-10 15:32:24,632 INFO L226 Difference]: Without dead ends: 105 [2018-10-10 15:32:24,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:32:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-10 15:32:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2018-10-10 15:32:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-10 15:32:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-10 15:32:24,645 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 80 [2018-10-10 15:32:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:24,646 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-10 15:32:24,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:32:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-10 15:32:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-10 15:32:24,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:24,649 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] [2018-10-10 15:32:24,649 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:24,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:24,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2086667693, now seen corresponding path program 2 times [2018-10-10 15:32:24,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:25,306 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2018-10-10 15:32:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:26,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:26,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-10 15:32:26,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-10 15:32:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-10 15:32:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2018-10-10 15:32:26,411 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 32 states. [2018-10-10 15:32:28,543 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-10 15:32:28,774 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-10 15:32:29,062 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-10 15:32:29,249 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-10 15:32:29,631 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:32:29,855 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:32:30,063 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-10 15:32:30,289 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-10 15:32:30,634 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-10 15:32:30,936 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-10 15:32:31,174 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-10 15:32:31,394 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-10 15:32:31,616 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2018-10-10 15:32:31,840 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:32:32,535 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-10 15:32:32,745 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-10 15:32:32,929 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:32:33,147 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-10 15:32:33,549 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-10 15:32:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:33,580 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-10 15:32:33,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:32:33,588 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 93 [2018-10-10 15:32:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:33,595 INFO L225 Difference]: With dead ends: 118 [2018-10-10 15:32:33,595 INFO L226 Difference]: Without dead ends: 118 [2018-10-10 15:32:33,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=732, Invalid=3824, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:32:33,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-10 15:32:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2018-10-10 15:32:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-10 15:32:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-10 15:32:33,619 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 93 [2018-10-10 15:32:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:33,620 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-10 15:32:33,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-10 15:32:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-10 15:32:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 15:32:33,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:33,625 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] [2018-10-10 15:32:33,625 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:33,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:33,626 INFO L82 PathProgramCache]: Analyzing trace with hash 393850972, now seen corresponding path program 3 times [2018-10-10 15:32:33,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:35,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:35,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-10 15:32:35,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-10 15:32:35,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-10 15:32:35,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560 [2018-10-10 15:32:35,961 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 40 states. [2018-10-10 15:32:37,990 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-10 15:32:38,298 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:32:38,535 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:32:39,115 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:32:39,418 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-10 15:32:39,658 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-10 15:32:40,046 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-10 15:32:40,454 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-10 15:32:40,787 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-10 15:32:41,046 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-10 15:32:41,339 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-10 15:32:41,632 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-10 15:32:41,869 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:32:42,151 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-10-10 15:32:42,543 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2018-10-10 15:32:42,854 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2018-10-10 15:32:43,091 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-10 15:32:43,376 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-10 15:32:43,651 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:32:43,877 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-10 15:32:44,283 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-10 15:32:44,608 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:32:44,828 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-10 15:32:45,075 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2018-10-10 15:32:45,659 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:32:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:45,698 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-10 15:32:45,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-10 15:32:45,699 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 106 [2018-10-10 15:32:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:45,702 INFO L225 Difference]: With dead ends: 131 [2018-10-10 15:32:45,702 INFO L226 Difference]: Without dead ends: 131 [2018-10-10 15:32:45,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1102, Invalid=5704, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:32:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-10 15:32:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2018-10-10 15:32:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-10 15:32:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-10 15:32:45,718 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 106 [2018-10-10 15:32:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:45,719 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-10 15:32:45,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-10 15:32:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-10 15:32:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-10 15:32:45,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:45,722 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] [2018-10-10 15:32:45,722 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:45,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1149167091, now seen corresponding path program 4 times [2018-10-10 15:32:45,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:32:48,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:48,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-10 15:32:48,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-10 15:32:48,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-10 15:32:48,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1878, Unknown=0, NotChecked=0, Total=1980 [2018-10-10 15:32:48,686 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 45 states. [2018-10-10 15:32:50,860 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-10 15:32:51,088 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2018-10-10 15:32:51,284 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:32:51,804 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-10 15:32:52,323 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-10 15:32:52,652 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2018-10-10 15:32:53,331 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2018-10-10 15:32:54,095 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 141 [2018-10-10 15:32:54,625 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 144 [2018-10-10 15:32:55,041 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-10-10 15:32:55,485 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 133 [2018-10-10 15:32:55,901 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2018-10-10 15:32:56,237 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2018-10-10 15:32:56,708 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-10 15:32:57,234 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-10 15:32:57,664 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-10 15:32:58,037 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2018-10-10 15:32:58,499 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 131 [2018-10-10 15:32:58,876 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-10 15:32:59,188 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2018-10-10 15:32:59,553 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-10 15:33:00,609 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-10 15:33:01,088 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-10 15:33:01,400 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-10 15:33:01,755 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-10 15:33:02,096 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-10 15:33:02,394 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-10 15:33:02,904 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-10 15:33:03,236 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-10 15:33:03,537 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-10 15:33:03,869 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-10 15:33:04,376 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-10 15:33:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:04,427 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-10 15:33:04,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-10 15:33:04,428 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 119 [2018-10-10 15:33:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:04,429 INFO L225 Difference]: With dead ends: 144 [2018-10-10 15:33:04,430 INFO L226 Difference]: Without dead ends: 144 [2018-10-10 15:33:04,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=1220, Invalid=7710, Unknown=0, NotChecked=0, Total=8930 [2018-10-10 15:33:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-10 15:33:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2018-10-10 15:33:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-10 15:33:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-10 15:33:04,440 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 119 [2018-10-10 15:33:04,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:04,441 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-10 15:33:04,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-10 15:33:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-10 15:33:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-10 15:33:04,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:04,444 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] [2018-10-10 15:33:04,444 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:04,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:04,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1021622268, now seen corresponding path program 5 times [2018-10-10 15:33:04,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:08,197 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-10-10 15:33:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:10,220 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:10,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 15:33:10,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 15:33:10,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 15:33:10,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:33:10,222 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 52 states. [2018-10-10 15:33:11,987 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-10-10 15:33:12,297 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-10 15:33:12,558 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:33:13,460 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 15:33:13,729 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-10 15:33:14,098 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:33:14,607 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 15:33:15,053 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:33:15,535 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2018-10-10 15:33:16,105 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2018-10-10 15:33:16,444 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 15:33:16,706 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 15:33:17,000 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 15:33:17,423 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:33:17,728 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 15:33:18,165 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2018-10-10 15:33:18,666 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2018-10-10 15:33:19,169 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-10-10 15:33:19,579 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2018-10-10 15:33:20,092 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-10 15:33:20,781 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2018-10-10 15:33:21,317 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2018-10-10 15:33:21,750 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-10 15:33:22,214 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-10 15:33:22,703 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2018-10-10 15:33:23,115 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-10 15:33:23,584 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-10 15:33:24,140 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-10 15:33:24,628 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2018-10-10 15:33:25,065 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-10 15:33:25,625 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2018-10-10 15:33:26,051 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-10 15:33:26,453 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-10 15:33:26,864 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-10 15:33:27,315 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-10 15:33:27,584 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:33:27,818 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 15:33:28,093 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 15:33:28,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:28,133 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-10 15:33:28,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-10 15:33:28,135 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 132 [2018-10-10 15:33:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:28,136 INFO L225 Difference]: With dead ends: 157 [2018-10-10 15:33:28,137 INFO L226 Difference]: Without dead ends: 157 [2018-10-10 15:33:28,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=1683, Invalid=10089, Unknown=0, NotChecked=0, Total=11772 [2018-10-10 15:33:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-10 15:33:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2018-10-10 15:33:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-10 15:33:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-10 15:33:28,148 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 132 [2018-10-10 15:33:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:28,149 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-10 15:33:28,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 15:33:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-10 15:33:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-10 15:33:28,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:33:28,151 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] [2018-10-10 15:33:28,151 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:33:28,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:33:28,152 INFO L82 PathProgramCache]: Analyzing trace with hash 924284525, now seen corresponding path program 6 times [2018-10-10 15:33:28,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:33:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:33:29,804 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-10 15:33:30,406 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-10-10 15:33:30,695 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:33:30,891 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-10 15:33:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:33:33,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:33:33,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:33:33,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:33:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:33:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:33:33,284 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 57 states. [2018-10-10 15:33:35,769 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-10 15:33:36,115 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-10 15:33:36,928 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 15:33:37,255 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 15:33:37,615 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:33:38,040 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:33:38,680 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 15:33:39,162 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:33:39,808 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2018-10-10 15:33:40,531 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2018-10-10 15:33:41,021 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 15:33:41,353 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:33:41,985 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-10 15:33:42,863 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2018-10-10 15:33:43,562 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2018-10-10 15:33:44,125 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 168 [2018-10-10 15:33:44,760 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2018-10-10 15:33:45,388 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2018-10-10 15:33:45,976 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-10 15:33:46,687 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2018-10-10 15:33:47,583 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 187 [2018-10-10 15:33:48,359 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2018-10-10 15:33:48,930 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-10 15:33:49,591 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2018-10-10 15:33:50,245 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 183 [2018-10-10 15:33:50,777 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2018-10-10 15:33:51,476 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 172 [2018-10-10 15:33:52,121 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 175 [2018-10-10 15:33:52,790 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 178 [2018-10-10 15:33:53,331 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-10 15:33:53,935 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 177 [2018-10-10 15:33:54,514 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-10 15:33:55,030 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-10 15:33:55,618 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 165 [2018-10-10 15:33:56,300 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 168 [2018-10-10 15:33:56,903 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-10 15:33:57,437 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-10 15:33:58,009 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2018-10-10 15:33:58,543 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2018-10-10 15:33:59,041 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-10 15:33:59,620 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2018-10-10 15:33:59,943 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 15:34:00,301 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 15:34:00,641 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-10 15:34:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:00,686 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-10 15:34:00,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-10 15:34:00,687 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 145 [2018-10-10 15:34:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:00,688 INFO L225 Difference]: With dead ends: 170 [2018-10-10 15:34:00,689 INFO L226 Difference]: Without dead ends: 170 [2018-10-10 15:34:00,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=2001, Invalid=12279, Unknown=0, NotChecked=0, Total=14280 [2018-10-10 15:34:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-10 15:34:00,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2018-10-10 15:34:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-10 15:34:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-10 15:34:00,700 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 145 [2018-10-10 15:34:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:00,701 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-10 15:34:00,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:34:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-10 15:34:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-10 15:34:00,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:00,704 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] [2018-10-10 15:34:00,704 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:00,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 749696924, now seen corresponding path program 7 times [2018-10-10 15:34:00,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:01,838 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-10 15:34:02,096 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-10 15:34:02,362 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-10 15:34:02,620 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-10 15:34:02,856 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:34:03,055 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:34:03,314 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:34:03,586 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-10-10 15:34:03,888 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:34:04,129 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:34:04,372 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 15:34:04,620 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 15:34:04,914 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-10 15:34:05,254 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 15:34:05,539 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 15:34:05,826 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 15:34:06,105 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-10 15:34:06,441 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-10 15:34:06,738 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-10 15:34:06,922 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-10 15:34:07,109 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 15:34:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:10,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:10,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-10 15:34:10,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-10 15:34:10,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-10 15:34:10,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3635, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:34:10,104 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 62 states. [2018-10-10 15:34:12,943 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-10 15:34:13,329 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-10-10 15:34:13,567 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:34:14,254 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 15:34:14,654 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:34:15,089 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:34:15,594 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 15:34:16,414 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 15:34:17,078 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-10 15:34:17,819 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 187 [2018-10-10 15:34:18,685 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 216 [2018-10-10 15:34:19,203 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-10 15:34:19,612 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 15:34:20,406 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2018-10-10 15:34:21,467 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2018-10-10 15:34:22,370 WARN L178 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2018-10-10 15:34:23,110 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 193 [2018-10-10 15:34:23,967 WARN L178 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 226 [2018-10-10 15:34:24,493 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-10 15:34:24,891 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:34:25,390 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:34:26,132 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-10 15:34:26,675 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:34:27,134 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 15:34:27,639 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:34:28,128 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-10 15:34:28,519 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:34:29,273 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 198 [2018-10-10 15:34:30,270 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2018-10-10 15:34:31,107 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2018-10-10 15:34:31,535 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-10 15:34:32,048 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 15:34:32,504 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:34:32,869 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-10 15:34:33,288 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:34:33,943 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 15:34:34,388 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:34:34,776 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:34:35,197 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:34:35,622 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:34:35,987 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 15:34:36,649 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-10 15:34:37,595 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-10 15:34:38,029 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:34:38,412 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 15:34:38,822 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 15:34:39,220 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 15:34:39,547 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:34:40,271 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:34:40,675 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 15:34:41,011 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:34:41,391 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 15:34:42,162 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 15:34:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:34:42,275 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-10 15:34:42,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-10 15:34:42,275 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 158 [2018-10-10 15:34:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:34:42,278 INFO L225 Difference]: With dead ends: 183 [2018-10-10 15:34:42,278 INFO L226 Difference]: Without dead ends: 183 [2018-10-10 15:34:42,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2847 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=1846, Invalid=15710, Unknown=0, NotChecked=0, Total=17556 [2018-10-10 15:34:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-10 15:34:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2018-10-10 15:34:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-10 15:34:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-10 15:34:42,286 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 158 [2018-10-10 15:34:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:34:42,286 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-10 15:34:42,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-10 15:34:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-10 15:34:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-10 15:34:42,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:34:42,289 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] [2018-10-10 15:34:42,289 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:34:42,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:34:42,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1670978253, now seen corresponding path program 8 times [2018-10-10 15:34:42,290 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:34:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:34:43,628 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-10 15:34:43,990 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-10 15:34:44,365 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-10 15:34:44,741 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 15:34:45,072 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:34:45,372 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:34:45,727 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:34:46,163 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-10 15:34:46,601 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:34:46,965 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:34:47,423 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 15:34:47,811 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 15:34:48,216 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-10 15:34:48,655 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-10 15:34:49,051 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 15:34:49,459 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 15:34:49,862 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 15:34:50,187 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 15:34:50,621 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:34:50,928 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-10 15:34:51,237 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 15:34:51,572 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 15:34:51,865 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:34:52,122 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:34:52,493 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-10 15:34:52,699 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-10 15:34:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:34:56,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:34:56,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-10 15:34:56,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-10 15:34:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-10 15:34:56,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:34:56,232 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 68 states. [2018-10-10 15:34:59,440 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-10 15:34:59,892 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-10 15:35:00,172 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-10 15:35:01,011 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-10 15:35:01,488 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 15:35:02,000 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 15:35:02,682 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2018-10-10 15:35:03,645 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-10 15:35:04,383 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2018-10-10 15:35:05,281 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 211 [2018-10-10 15:35:06,343 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 245 [2018-10-10 15:35:06,966 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-10 15:35:07,461 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:35:08,476 WARN L178 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 226 [2018-10-10 15:35:09,710 WARN L178 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2018-10-10 15:35:10,728 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 232 [2018-10-10 15:35:11,623 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 218 [2018-10-10 15:35:12,646 WARN L178 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 257 [2018-10-10 15:35:13,319 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-10 15:35:13,786 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-10 15:35:14,765 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2018-10-10 15:35:15,628 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-10 15:35:16,252 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-10-10 15:35:16,771 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-10 15:35:17,367 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-10 15:35:18,000 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-10 15:35:18,510 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:35:19,086 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-10 15:35:19,928 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-10 15:35:20,553 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-10 15:35:21,059 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 15:35:21,639 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-10 15:35:22,208 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-10 15:35:22,659 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:35:23,620 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2018-10-10 15:35:24,449 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:35:25,030 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 15:35:25,526 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 15:35:26,086 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 15:35:26,626 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-10 15:35:27,079 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 15:35:27,591 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:35:28,430 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-10 15:35:28,966 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:35:29,431 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:35:29,940 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:35:30,442 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-10 15:35:30,853 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-10 15:35:31,607 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2018-10-10 15:35:32,370 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 15:35:32,896 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-10 15:35:33,394 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 15:35:33,885 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-10 15:35:34,345 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-10 15:35:34,772 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 15:35:35,658 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:35:36,129 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:35:36,540 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 15:35:37,005 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 15:35:37,863 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 15:35:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:35:37,979 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-10 15:35:37,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-10 15:35:37,980 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 171 [2018-10-10 15:35:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:35:37,981 INFO L225 Difference]: With dead ends: 196 [2018-10-10 15:35:37,981 INFO L226 Difference]: Without dead ends: 196 [2018-10-10 15:35:37,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=2069, Invalid=19101, Unknown=0, NotChecked=0, Total=21170 [2018-10-10 15:35:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-10 15:35:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2018-10-10 15:35:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-10 15:35:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-10 15:35:37,988 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 171 [2018-10-10 15:35:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:35:37,990 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-10 15:35:37,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-10 15:35:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-10 15:35:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-10 15:35:37,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:35:37,993 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] [2018-10-10 15:35:37,994 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:35:37,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:35:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash -500961476, now seen corresponding path program 9 times [2018-10-10 15:35:37,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:35:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:35:39,708 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-10 15:35:40,235 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-10 15:35:40,713 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-10 15:35:41,201 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2018-10-10 15:35:41,657 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 15:35:42,121 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 15:35:42,596 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 15:35:43,168 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2018-10-10 15:35:43,843 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 15:35:44,323 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 15:35:44,800 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-10 15:35:45,265 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-10 15:35:45,777 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-10 15:35:46,313 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2018-10-10 15:35:46,805 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 15:35:47,301 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 15:35:47,785 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 15:35:48,218 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 15:35:48,811 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 15:35:49,206 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 15:35:49,578 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 15:35:49,982 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 15:35:50,358 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:35:50,688 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 15:35:51,074 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 15:35:51,330 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 15:35:51,581 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:35:51,839 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:35:52,093 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:35:52,339 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:35:52,612 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 15:35:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:35:56,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:35:56,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-10 15:35:56,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-10 15:35:56,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-10 15:35:56,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-10 15:35:56,181 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 76 states. [2018-10-10 15:35:59,702 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-10 15:36:00,201 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2018-10-10 15:36:00,547 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-10 15:36:01,556 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 15:36:02,132 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-10 15:36:02,758 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-10 15:36:03,478 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2018-10-10 15:36:04,605 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2018-10-10 15:36:05,423 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2018-10-10 15:36:06,429 WARN L178 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 235 [2018-10-10 15:36:07,602 WARN L178 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 274 [2018-10-10 15:36:08,341 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-10 15:36:08,922 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-10 15:36:09,662 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-10 15:36:10,607 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-10 15:36:11,296 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2018-10-10 15:36:11,809 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-10 15:36:12,368 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-10 15:36:13,028 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2018-10-10 15:36:13,591 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-10 15:36:14,804 WARN L178 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 254 [2018-10-10 15:36:16,044 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 255 [2018-10-10 15:36:17,426 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 258 DAG size of output: 258 [2018-10-10 15:36:18,745 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2018-10-10 15:36:19,694 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 236 [2018-10-10 15:36:20,708 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 275 [2018-10-10 15:36:21,788 WARN L178 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 272 [2018-10-10 15:36:22,683 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-10 15:36:23,799 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 255 [2018-10-10 15:36:25,321 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-10 15:36:26,562 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-10 15:36:27,474 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-10 15:36:28,509 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 269 [2018-10-10 15:36:29,631 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 268 [2018-10-10 15:36:30,656 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 235 [2018-10-10 15:36:31,850 WARN L178 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-10 15:36:33,043 WARN L178 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2018-10-10 15:36:34,225 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 251 [2018-10-10 15:36:35,191 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-10 15:36:36,186 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-10 15:36:37,233 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2018-10-10 15:36:38,141 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 229 [2018-10-10 15:36:39,172 WARN L178 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-10 15:36:40,299 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 241 [2018-10-10 15:36:41,367 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 244 [2018-10-10 15:36:42,276 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-10 15:36:43,335 WARN L178 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2018-10-10 15:36:44,393 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 244 [2018-10-10 15:36:45,396 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2018-10-10 15:36:46,381 WARN L178 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-10 15:36:47,389 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2018-10-10 15:36:48,384 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-10 15:36:49,281 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 216 [2018-10-10 15:36:50,378 WARN L178 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2018-10-10 15:36:51,401 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-10 15:36:52,318 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-10 15:36:53,246 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-10 15:36:54,197 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 222 [2018-10-10 15:36:55,211 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 225 [2018-10-10 15:36:56,136 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-10 15:36:57,074 WARN L178 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 215 [2018-10-10 15:36:58,031 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 215 [2018-10-10 15:36:58,912 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 208 [2018-10-10 15:36:59,791 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 208 [2018-10-10 15:37:00,807 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2018-10-10 15:37:01,394 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-10 15:37:01,950 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:37:02,559 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 15:37:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:37:02,640 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-10 15:37:02,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-10 15:37:02,641 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 184 [2018-10-10 15:37:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:37:02,643 INFO L225 Difference]: With dead ends: 209 [2018-10-10 15:37:02,643 INFO L226 Difference]: Without dead ends: 209 [2018-10-10 15:37:02,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 78.0s TimeCoverageRelationStatistics Valid=3613, Invalid=22469, Unknown=0, NotChecked=0, Total=26082 [2018-10-10 15:37:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-10 15:37:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-10 15:37:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-10 15:37:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-10 15:37:02,650 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 184 [2018-10-10 15:37:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:37:02,650 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-10 15:37:02,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-10 15:37:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-10 15:37:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-10 15:37:02,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:37:02,652 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] [2018-10-10 15:37:02,652 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:37:02,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:37:02,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1845233453, now seen corresponding path program 10 times [2018-10-10 15:37:02,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:37:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:37:04,296 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-10 15:37:04,927 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-10 15:37:05,642 WARN L178 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-10 15:37:06,320 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2018-10-10 15:37:06,965 WARN L178 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:37:07,580 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:37:08,199 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:37:08,992 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2018-10-10 15:37:09,736 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:37:10,362 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:37:11,070 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-10 15:37:11,698 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-10 15:37:12,408 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-10 15:37:13,134 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2018-10-10 15:37:13,802 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-10 15:37:14,480 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-10 15:37:15,134 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 15:37:15,768 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 15:37:16,483 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:37:17,008 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-10 15:37:17,509 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 15:37:18,025 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 15:37:18,525 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 15:37:18,969 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 15:37:19,493 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 15:37:19,884 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 15:37:20,275 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 15:37:20,659 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 15:37:21,148 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 15:37:21,538 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 15:37:21,912 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-10 15:37:22,195 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 15:37:22,472 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:37:22,731 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:37:23,002 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:37:23,257 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:37:23,549 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 15:37:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:37:27,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:37:27,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-10 15:37:27,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-10 15:37:27,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-10 15:37:27,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2018-10-10 15:37:27,585 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 81 states. [2018-10-10 15:37:31,361 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:37:31,934 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-10 15:37:32,324 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 15:37:33,449 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 15:37:34,108 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 15:37:34,847 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-10 15:37:35,746 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2018-10-10 15:37:37,123 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-10-10 15:37:38,116 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2018-10-10 15:37:39,307 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 259 [2018-10-10 15:37:40,752 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 350 DAG size of output: 303 [2018-10-10 15:37:41,694 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2018-10-10 15:37:42,373 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-10-10 15:37:43,656 WARN L178 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 275 [2018-10-10 15:37:45,248 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 285 DAG size of output: 278 [2018-10-10 15:37:46,660 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 289 DAG size of output: 281 [2018-10-10 15:37:47,775 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 268 [2018-10-10 15:37:49,049 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 336 DAG size of output: 315 [2018-10-10 15:37:50,415 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 321 DAG size of output: 311 [2018-10-10 15:37:51,520 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-10 15:37:52,913 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 294 DAG size of output: 288 [2018-10-10 15:37:54,561 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 298 DAG size of output: 291 [2018-10-10 15:37:56,074 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 302 DAG size of output: 294 [2018-10-10 15:37:57,228 WARN L178 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 272 [2018-10-10 15:37:58,482 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 326 DAG size of output: 313 [2018-10-10 15:37:59,844 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 317 DAG size of output: 307 [2018-10-10 15:38:00,945 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2018-10-10 15:38:02,399 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 289 DAG size of output: 282 [2018-10-10 15:38:03,820 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 293 DAG size of output: 286 [2018-10-10 15:38:05,282 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 297 DAG size of output: 289 [2018-10-10 15:38:06,318 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 262 [2018-10-10 15:38:07,590 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 312 DAG size of output: 297 [2018-10-10 15:38:08,833 WARN L178 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 295 [2018-10-10 15:38:09,895 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2018-10-10 15:38:11,152 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 279 DAG size of output: 272 [2018-10-10 15:38:12,559 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 283 DAG size of output: 276 [2018-10-10 15:38:13,959 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 279 [2018-10-10 15:38:14,987 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 256 [2018-10-10 15:38:16,177 WARN L178 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-10 15:38:17,462 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 291 DAG size of output: 283 [2018-10-10 15:38:18,541 WARN L178 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 254 [2018-10-10 15:38:19,750 WARN L178 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 266 [2018-10-10 15:38:21,027 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 276 DAG size of output: 269 [2018-10-10 15:38:22,369 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 280 DAG size of output: 272 [2018-10-10 15:38:23,435 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-10 15:38:24,597 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 273 [2018-10-10 15:38:25,785 WARN L178 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 271 [2018-10-10 15:38:26,845 WARN L178 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 248 [2018-10-10 15:38:28,124 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 263 DAG size of output: 256 [2018-10-10 15:38:29,433 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 267 DAG size of output: 260 [2018-10-10 15:38:30,686 WARN L178 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 263 [2018-10-10 15:38:31,737 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2018-10-10 15:38:32,920 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 265 [2018-10-10 15:38:34,095 WARN L178 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 259 [2018-10-10 15:38:35,096 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 237 [2018-10-10 15:38:36,222 WARN L178 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 248 [2018-10-10 15:38:37,369 WARN L178 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 251 [2018-10-10 15:38:38,608 WARN L178 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 254 [2018-10-10 15:38:39,634 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 240 [2018-10-10 15:38:40,743 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 253 [2018-10-10 15:38:41,850 WARN L178 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2018-10-10 15:38:42,907 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2018-10-10 15:38:43,964 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 241 [2018-10-10 15:38:45,071 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 244 [2018-10-10 15:38:46,208 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 247 [2018-10-10 15:38:47,235 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 233 [2018-10-10 15:38:48,363 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 239 [2018-10-10 15:38:49,420 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 234 [2018-10-10 15:38:50,440 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-10 15:38:51,620 WARN L178 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-10 15:38:52,290 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-10 15:38:52,978 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-10 15:38:53,681 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 15:38:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:53,774 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-10 15:38:53,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-10 15:38:53,775 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 197 [2018-10-10 15:38:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:53,776 INFO L225 Difference]: With dead ends: 222 [2018-10-10 15:38:53,776 INFO L226 Difference]: Without dead ends: 222 [2018-10-10 15:38:53,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6186 ImplicationChecksByTransitivity, 104.2s TimeCoverageRelationStatistics Valid=4203, Invalid=25209, Unknown=0, NotChecked=0, Total=29412 [2018-10-10 15:38:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-10 15:38:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2018-10-10 15:38:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-10 15:38:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-10 15:38:53,782 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 197 [2018-10-10 15:38:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:53,782 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-10 15:38:53,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-10 15:38:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-10 15:38:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-10 15:38:53,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:53,784 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] [2018-10-10 15:38:53,784 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:53,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1879842524, now seen corresponding path program 11 times [2018-10-10 15:38:53,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:55,622 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-10 15:38:55,887 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-10 15:38:57,019 WARN L178 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-10 15:38:57,857 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-10 15:38:58,781 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-10 15:38:59,637 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 71 [2018-10-10 15:39:00,486 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-10 15:39:01,277 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-10 15:39:02,085 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-10 15:39:03,176 WARN L178 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 74 [2018-10-10 15:39:04,159 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-10 15:39:04,976 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-10 15:39:05,796 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2018-10-10 15:39:06,644 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2018-10-10 15:39:07,543 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2018-10-10 15:39:08,556 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 78 [2018-10-10 15:39:09,429 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-10 15:39:10,323 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-10 15:39:11,180 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-10 15:39:11,957 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-10 15:39:12,860 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-10 15:39:13,650 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-10 15:39:14,358 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-10 15:39:15,054 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-10 15:39:15,743 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 15:39:16,334 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 15:39:17,029 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 15:39:17,548 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-10 15:39:18,055 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-10 15:39:18,617 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-10 15:39:19,184 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-10 15:39:19,686 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-10 15:39:20,212 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 15:39:20,631 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 15:39:21,031 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 15:39:21,441 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 15:39:21,834 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 15:39:22,236 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 15:39:22,623 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-10 15:39:22,912 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 15:39:23,195 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:39:23,473 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:39:23,812 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:39:24,116 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 15:39:24,415 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 15:39:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:39:28,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:39:28,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-10 15:39:28,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-10 15:39:28,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-10 15:39:28,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=7052, Unknown=0, NotChecked=0, Total=7482 [2018-10-10 15:39:28,656 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 87 states. [2018-10-10 15:39:31,029 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-10 15:39:32,686 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-10 15:39:33,316 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2018-10-10 15:39:33,710 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-10-10 15:39:34,183 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-10 15:39:34,720 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 15:39:35,387 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-10 15:39:36,179 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-10 15:39:37,135 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2018-10-10 15:39:38,414 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2018-10-10 15:39:39,604 WARN L178 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2018-10-10 15:39:40,923 WARN L178 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 288 [2018-10-10 15:39:42,498 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 384 DAG size of output: 337 [2018-10-10 15:39:43,426 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2018-10-10 15:39:44,228 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2018-10-10 15:39:45,675 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 309 DAG size of output: 300 [2018-10-10 15:39:47,356 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 314 DAG size of output: 303 [2018-10-10 15:39:48,913 WARN L178 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 319 DAG size of output: 306 [2018-10-10 15:39:50,660 WARN L178 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 306 DAG size of output: 289 [2018-10-10 15:39:52,648 WARN L178 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 365 DAG size of output: 342 [2018-10-10 15:39:54,144 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 350 DAG size of output: 342 [2018-10-10 15:39:55,377 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 289 [2018-10-10 15:39:56,889 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 317 DAG size of output: 308 [2018-10-10 15:39:58,732 WARN L178 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 322 DAG size of output: 311 [2018-10-10 15:40:00,561 WARN L178 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 327 DAG size of output: 314 [2018-10-10 15:40:01,759 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 291 [2018-10-10 15:40:03,157 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 353 DAG size of output: 334 [2018-10-10 15:40:04,659 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 344 DAG size of output: 330 [2018-10-10 15:40:05,876 WARN L178 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 283 [2018-10-10 15:40:07,421 WARN L178 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 320 DAG size of output: 308 [2018-10-10 15:40:09,282 WARN L178 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 325 DAG size of output: 312 [2018-10-10 15:40:11,150 WARN L178 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 330 DAG size of output: 315 [2018-10-10 15:40:12,365 WARN L178 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 291 [2018-10-10 15:40:13,837 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 347 DAG size of output: 329 [2018-10-10 15:40:15,420 WARN L178 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 338 DAG size of output: 323 [2018-10-10 15:40:16,659 WARN L178 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 285 [2018-10-10 15:40:18,206 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 310 DAG size of output: 298 [2018-10-10 15:40:19,806 WARN L178 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 315 DAG size of output: 302 [2018-10-10 15:40:21,485 WARN L178 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 320 DAG size of output: 305 [2018-10-10 15:40:22,668 WARN L178 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 278 [2018-10-10 15:40:24,107 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 335 DAG size of output: 310 [2018-10-10 15:40:25,603 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 326 DAG size of output: 311 [2018-10-10 15:40:26,822 WARN L178 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 279 [2018-10-10 15:40:28,253 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 303 DAG size of output: 291 [2018-10-10 15:40:29,794 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 308 DAG size of output: 295 [2018-10-10 15:40:31,403 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 313 DAG size of output: 298 [2018-10-10 15:40:32,618 WARN L178 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 272 [2018-10-10 15:40:33,998 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 323 DAG size of output: 298 [2018-10-10 15:40:35,449 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 314 DAG size of output: 299 [2018-10-10 15:40:36,674 WARN L178 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 273 [2018-10-10 15:40:38,087 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 294 DAG size of output: 283 [2018-10-10 15:40:39,571 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 299 DAG size of output: 286 [2018-10-10 15:40:41,152 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 304 DAG size of output: 289 [2018-10-10 15:40:42,360 WARN L178 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 273 [2018-10-10 15:40:43,744 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 313 DAG size of output: 296 [2018-10-10 15:40:45,130 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 304 DAG size of output: 290 [2018-10-10 15:40:46,396 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 267 [2018-10-10 15:40:47,748 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 292 DAG size of output: 281 [2018-10-10 15:40:49,196 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 297 DAG size of output: 284 [2018-10-10 15:40:50,677 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 302 DAG size of output: 287 [2018-10-10 15:40:51,891 WARN L178 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 267 [2018-10-10 15:40:53,237 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 299 DAG size of output: 287 [2018-10-10 15:40:54,558 WARN L178 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 281 [2018-10-10 15:40:55,763 WARN L178 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 261 [2018-10-10 15:40:57,076 WARN L178 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-10 15:40:58,381 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 270 [2018-10-10 15:40:59,723 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 284 DAG size of output: 273 [2018-10-10 15:41:00,911 WARN L178 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 259 [2018-10-10 15:41:02,214 WARN L178 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 272 [2018-10-10 15:41:03,488 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 266 [2018-10-10 15:41:04,649 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 253 [2018-10-10 15:41:05,865 WARN L178 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-10 15:41:07,118 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 260 [2018-10-10 15:41:08,358 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 263 [2018-10-10 15:41:09,463 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 247 [2018-10-10 15:41:10,656 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 253 [2018-10-10 15:41:11,921 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 253 [2018-10-10 15:41:13,067 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2018-10-10 15:41:14,289 WARN L178 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 253 [2018-10-10 15:41:15,056 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-10 15:41:15,805 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-10 15:41:16,665 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-10 15:41:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:16,719 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-10 15:41:16,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-10 15:41:16,720 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 210 [2018-10-10 15:41:16,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:16,722 INFO L225 Difference]: With dead ends: 235 [2018-10-10 15:41:16,722 INFO L226 Difference]: Without dead ends: 235 [2018-10-10 15:41:16,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 136.6s TimeCoverageRelationStatistics Valid=4610, Invalid=29430, Unknown=0, NotChecked=0, Total=34040 [2018-10-10 15:41:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-10 15:41:16,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 224. [2018-10-10 15:41:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-10 15:41:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-10 15:41:16,729 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 210 [2018-10-10 15:41:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:16,729 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-10 15:41:16,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-10 15:41:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-10 15:41:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-10 15:41:16,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:16,731 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] [2018-10-10 15:41:16,731 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:16,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1682556019, now seen corresponding path program 12 times [2018-10-10 15:41:16,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat