java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:49:54,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:49:54,928 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:49:54,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:49:54,946 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:49:54,947 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:49:54,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:49:54,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:49:54,953 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:49:54,961 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:49:54,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:49:54,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:49:54,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:49:54,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:49:54,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:49:54,971 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:49:54,973 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:49:54,974 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:49:54,978 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:49:54,983 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:49:54,984 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:49:54,985 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:49:54,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 16:49:54,988 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 16:49:54,988 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 16:49:54,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 16:49:54,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 16:49:54,991 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 16:49:54,992 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 16:49:54,995 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 16:49:54,995 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 16:49:54,996 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-14 16:49:54,996 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-14 16:49:54,997 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-14 16:49:54,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-14 16:49:55,001 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-14 16:49:55,001 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:49:55,018 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:49:55,019 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:49:55,019 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:49:55,020 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:49:55,020 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:49:55,020 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:49:55,021 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:49:55,021 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:49:55,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:49:55,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:49:55,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:49:55,022 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:49:55,022 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:49:55,024 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:49:55,025 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:49:55,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:49:55,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:49:55,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:49:55,113 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:49:55,114 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:49:55,115 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-14 16:49:55,115 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl' [2018-10-14 16:49:55,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:49:55,203 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:49:55,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:49:55,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:49:55,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:49:55,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/1) ... [2018-10-14 16:49:55,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:49:55,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:49:55,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:49:55,264 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:49:55,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (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 [2018-10-14 16:49:55,338 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:49:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:49:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:49:55,985 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:49:55,986 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:55 BoogieIcfgContainer [2018-10-14 16:49:55,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:49:55,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:49:55,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:49:55,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:49:55,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:49:55" (1/2) ... [2018-10-14 16:49:55,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b4fa16 and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:55, skipping insertion in model container [2018-10-14 16:49:55,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:55" (2/2) ... [2018-10-14 16:49:55,994 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-14 16:49:56,004 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:49:56,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:49:56,034 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:49:56,068 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:49:56,069 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:49:56,069 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:49:56,069 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:49:56,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:49:56,070 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:49:56,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:49:56,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:49:56,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:49:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-10-14 16:49:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-14 16:49:56,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:56,119 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:49:56,120 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:56,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:56,128 INFO L82 PathProgramCache]: Analyzing trace with hash -447702610, now seen corresponding path program 1 times [2018-10-14 16:49:56,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:57,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:49:57,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-14 16:49:57,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:49:57,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:49:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:49:57,098 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 12 states. [2018-10-14 16:49:57,684 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:49:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:58,269 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-14 16:49:58,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 16:49:58,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-10-14 16:49:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:58,283 INFO L225 Difference]: With dead ends: 94 [2018-10-14 16:49:58,284 INFO L226 Difference]: Without dead ends: 94 [2018-10-14 16:49:58,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:49:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-14 16:49:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2018-10-14 16:49:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-14 16:49:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-14 16:49:58,333 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 69 [2018-10-14 16:49:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:58,334 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-14 16:49:58,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:49:58,334 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-14 16:49:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-14 16:49:58,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:58,337 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:49:58,338 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:58,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:58,338 INFO L82 PathProgramCache]: Analyzing trace with hash 861635709, now seen corresponding path program 1 times [2018-10-14 16:49:58,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:59,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:59,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 16:49:59,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 16:49:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 16:49:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:49:59,317 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-14 16:50:01,566 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-14 16:50:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:01,928 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-14 16:50:01,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:50:01,928 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-14 16:50:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:01,932 INFO L225 Difference]: With dead ends: 107 [2018-10-14 16:50:01,932 INFO L226 Difference]: Without dead ends: 107 [2018-10-14 16:50:01,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:50:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-14 16:50:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2018-10-14 16:50:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-14 16:50:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-14 16:50:01,947 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 82 [2018-10-14 16:50:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:01,948 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-14 16:50:01,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 16:50:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-14 16:50:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-14 16:50:01,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:01,951 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:01,951 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:01,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash -499981810, now seen corresponding path program 2 times [2018-10-14 16:50:01,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:04,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:04,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-14 16:50:04,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-14 16:50:04,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-14 16:50:04,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:50:04,093 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 32 states. [2018-10-14 16:50:06,271 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-14 16:50:06,489 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-14 16:50:06,669 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-14 16:50:07,202 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:50:07,394 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-14 16:50:07,587 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-14 16:50:07,824 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-14 16:50:08,192 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-14 16:50:08,519 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-14 16:50:08,771 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-14 16:50:09,084 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-14 16:50:09,337 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2018-10-14 16:50:10,271 WARN L179 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:50:10,590 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-14 16:50:10,814 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-14 16:50:11,003 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:50:11,316 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-14 16:50:11,603 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-14 16:50:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:11,682 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-14 16:50:11,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:50:11,683 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 95 [2018-10-14 16:50:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:11,685 INFO L225 Difference]: With dead ends: 120 [2018-10-14 16:50:11,685 INFO L226 Difference]: Without dead ends: 120 [2018-10-14 16:50:11,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=732, Invalid=3824, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:50:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-14 16:50:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2018-10-14 16:50:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-14 16:50:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-14 16:50:11,697 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 95 [2018-10-14 16:50:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:11,698 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-14 16:50:11,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-14 16:50:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-14 16:50:11,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-14 16:50:11,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:11,700 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:11,700 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:11,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:11,701 INFO L82 PathProgramCache]: Analyzing trace with hash -912664547, now seen corresponding path program 3 times [2018-10-14 16:50:11,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:13,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:13,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-14 16:50:13,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-14 16:50:13,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-14 16:50:13,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1469, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:50:13,741 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 40 states. [2018-10-14 16:50:15,070 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-14 16:50:15,620 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-14 16:50:15,804 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-14 16:50:16,050 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:50:16,261 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-14 16:50:16,768 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:50:16,988 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-14 16:50:17,307 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-14 16:50:17,563 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2018-10-14 16:50:17,932 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-14 16:50:18,233 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-14 16:50:18,474 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2018-10-14 16:50:18,731 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2018-10-14 16:50:19,066 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2018-10-14 16:50:19,326 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:50:19,593 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-14 16:50:19,959 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-14 16:50:20,247 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-14 16:50:20,527 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-14 16:50:20,803 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:50:21,055 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-14 16:50:21,262 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-14 16:50:21,605 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:50:21,836 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-14 16:50:22,030 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-14 16:50:22,269 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-14 16:50:22,613 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-14 16:50:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:22,652 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-14 16:50:22,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 16:50:22,653 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 108 [2018-10-14 16:50:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:22,656 INFO L225 Difference]: With dead ends: 133 [2018-10-14 16:50:22,656 INFO L226 Difference]: Without dead ends: 133 [2018-10-14 16:50:22,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=998, Invalid=5808, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:50:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-14 16:50:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2018-10-14 16:50:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-14 16:50:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-14 16:50:22,667 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 108 [2018-10-14 16:50:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:22,668 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-14 16:50:22,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-14 16:50:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-14 16:50:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-14 16:50:22,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:22,670 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:22,671 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:22,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash -206474642, now seen corresponding path program 4 times [2018-10-14 16:50:22,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:23,037 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 3 [2018-10-14 16:50:23,422 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2018-10-14 16:50:24,042 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2018-10-14 16:50:24,236 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2018-10-14 16:50:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:26,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:26,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 16:50:26,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 16:50:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 16:50:26,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2054, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 16:50:26,395 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 47 states. [2018-10-14 16:50:27,874 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:50:28,056 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-14 16:50:28,257 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-14 16:50:28,559 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-14 16:50:28,838 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-14 16:50:29,955 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 16:50:30,522 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-14 16:50:30,892 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-14 16:50:31,144 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-10-14 16:50:31,449 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-14 16:50:31,790 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2018-10-14 16:50:32,035 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 16:50:32,218 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-14 16:50:32,454 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-14 16:50:32,896 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-14 16:50:33,218 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-14 16:50:33,535 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-14 16:50:33,888 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2018-10-14 16:50:34,103 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 16:50:34,744 WARN L179 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 16:50:34,988 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-14 16:50:35,361 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-10-14 16:50:35,649 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 16:50:35,877 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 16:50:36,141 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 16:50:36,348 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-14 16:50:36,514 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-14 16:50:36,724 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 16:50:37,224 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 16:50:37,764 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-14 16:50:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:38,191 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-14 16:50:38,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:50:38,193 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 121 [2018-10-14 16:50:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:38,194 INFO L225 Difference]: With dead ends: 146 [2018-10-14 16:50:38,194 INFO L226 Difference]: Without dead ends: 146 [2018-10-14 16:50:38,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1251, Invalid=8451, Unknown=0, NotChecked=0, Total=9702 [2018-10-14 16:50:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-14 16:50:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2018-10-14 16:50:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-14 16:50:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-14 16:50:38,208 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 121 [2018-10-14 16:50:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:38,209 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-14 16:50:38,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 16:50:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-14 16:50:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-14 16:50:38,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:38,211 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:38,212 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:38,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash 158393277, now seen corresponding path program 5 times [2018-10-14 16:50:38,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:39,727 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-14 16:50:40,568 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2018-10-14 16:50:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:42,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:42,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:50:42,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:50:42,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:50:42,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:50:42,235 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 52 states. [2018-10-14 16:50:43,487 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-14 16:50:45,119 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-14 16:50:45,376 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-14 16:50:46,236 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 16:50:46,508 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-14 16:50:46,864 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:50:47,351 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-14 16:50:47,714 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:50:48,162 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2018-10-14 16:50:48,690 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2018-10-14 16:50:49,016 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 16:50:49,280 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 16:50:49,602 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-14 16:50:50,059 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 16:50:50,372 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 16:50:50,805 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2018-10-14 16:50:51,328 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2018-10-14 16:50:51,836 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-10-14 16:50:52,252 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-14 16:50:52,913 WARN L179 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-14 16:50:53,527 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2018-10-14 16:50:54,041 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2018-10-14 16:50:54,463 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-14 16:50:55,029 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-14 16:50:55,498 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2018-10-14 16:50:55,917 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-14 16:50:56,403 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-14 16:50:56,952 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-14 16:50:57,445 WARN L179 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2018-10-14 16:50:57,859 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-14 16:50:58,371 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2018-10-14 16:50:58,826 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-14 16:50:59,239 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-14 16:50:59,682 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-14 16:51:00,225 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-14 16:51:00,501 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 16:51:00,757 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 16:51:01,037 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 16:51:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:01,076 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-14 16:51:01,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-14 16:51:01,078 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 134 [2018-10-14 16:51:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:01,079 INFO L225 Difference]: With dead ends: 159 [2018-10-14 16:51:01,079 INFO L226 Difference]: Without dead ends: 159 [2018-10-14 16:51:01,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1683, Invalid=10089, Unknown=0, NotChecked=0, Total=11772 [2018-10-14 16:51:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-14 16:51:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2018-10-14 16:51:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-14 16:51:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-14 16:51:01,090 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 134 [2018-10-14 16:51:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:01,091 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-14 16:51:01,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:51:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-14 16:51:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-14 16:51:01,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:01,094 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:01,094 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:01,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:01,094 INFO L82 PathProgramCache]: Analyzing trace with hash 461523662, now seen corresponding path program 6 times [2018-10-14 16:51:01,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:02,845 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 16:51:03,021 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-14 16:51:03,213 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 16:51:03,362 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 16:51:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:06,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:06,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:51:06,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:51:06,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:51:06,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:51:06,501 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 57 states. [2018-10-14 16:51:08,951 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-14 16:51:09,272 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:51:10,069 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 16:51:10,440 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 16:51:10,791 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:51:11,219 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 16:51:11,840 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-14 16:51:12,322 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 16:51:12,904 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2018-10-14 16:51:13,604 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2018-10-14 16:51:14,026 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 16:51:14,482 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:51:15,118 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-14 16:51:16,035 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2018-10-14 16:51:16,729 WARN L179 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2018-10-14 16:51:17,468 WARN L179 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 164 [2018-10-14 16:51:18,313 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 187 [2018-10-14 16:51:18,927 WARN L179 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2018-10-14 16:51:19,433 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-14 16:51:20,110 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2018-10-14 16:51:21,078 WARN L179 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 189 [2018-10-14 16:51:21,842 WARN L179 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 192 [2018-10-14 16:51:22,425 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-14 16:51:23,053 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 191 [2018-10-14 16:51:23,703 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2018-10-14 16:51:24,259 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2018-10-14 16:51:24,869 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-14 16:51:25,543 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-14 16:51:26,237 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 178 [2018-10-14 16:51:26,765 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-14 16:51:27,337 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 177 [2018-10-14 16:51:27,914 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-14 16:51:28,416 WARN L179 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2018-10-14 16:51:28,975 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-14 16:51:29,559 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-14 16:51:30,154 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-14 16:51:30,709 WARN L179 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-14 16:51:31,276 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2018-10-14 16:51:31,802 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2018-10-14 16:51:32,293 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-14 16:51:32,935 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2018-10-14 16:51:33,280 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 16:51:33,626 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 16:51:33,969 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-14 16:51:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:34,017 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-14 16:51:34,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:51:34,017 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 147 [2018-10-14 16:51:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:34,019 INFO L225 Difference]: With dead ends: 172 [2018-10-14 16:51:34,019 INFO L226 Difference]: Without dead ends: 172 [2018-10-14 16:51:34,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=2001, Invalid=12279, Unknown=0, NotChecked=0, Total=14280 [2018-10-14 16:51:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-14 16:51:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2018-10-14 16:51:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-14 16:51:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-14 16:51:34,032 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 147 [2018-10-14 16:51:34,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:34,032 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-14 16:51:34,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:51:34,033 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-14 16:51:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-14 16:51:34,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:34,040 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:34,040 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:34,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash -387274915, now seen corresponding path program 7 times [2018-10-14 16:51:34,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:34,887 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:51:35,040 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:51:35,194 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-14 16:51:35,340 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-14 16:51:35,639 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 16:51:35,849 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 16:51:36,077 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 16:51:37,008 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-14 16:51:37,210 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-14 16:51:37,480 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-14 16:51:37,658 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-14 16:51:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:41,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:41,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:51:41,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:51:41,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:51:41,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3635, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:51:41,347 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 62 states. [2018-10-14 16:51:43,922 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-14 16:51:44,298 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-14 16:51:44,553 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-14 16:51:45,237 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 16:51:45,628 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 16:51:46,105 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 16:51:46,641 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 16:51:47,392 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-14 16:51:47,955 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-14 16:51:48,685 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 179 [2018-10-14 16:51:49,542 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 206 [2018-10-14 16:51:50,050 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-14 16:51:50,438 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-14 16:51:51,263 WARN L179 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 193 [2018-10-14 16:51:51,972 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 16:51:52,486 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 16:51:53,228 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 185 [2018-10-14 16:51:54,095 WARN L179 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-14 16:51:54,596 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 16:51:54,990 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 16:51:55,439 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 16:51:56,106 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-14 16:51:56,655 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 16:51:57,061 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-14 16:51:57,540 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-14 16:51:58,012 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 16:51:58,408 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:51:59,098 WARN L179 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2018-10-14 16:52:00,039 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2018-10-14 16:52:00,792 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2018-10-14 16:52:01,200 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-14 16:52:01,719 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 16:52:02,191 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-14 16:52:02,555 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 16:52:02,973 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:52:03,592 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 16:52:04,021 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:52:04,409 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:52:04,828 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:52:05,243 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:52:05,589 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:52:06,297 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2018-10-14 16:52:06,981 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 16:52:07,411 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:52:07,786 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 16:52:08,185 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:52:08,576 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:52:08,915 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 16:52:09,634 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:52:10,025 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:52:10,362 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 16:52:10,759 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 16:52:11,483 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 16:52:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:11,610 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-14 16:52:11,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-14 16:52:11,610 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 160 [2018-10-14 16:52:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:11,612 INFO L225 Difference]: With dead ends: 185 [2018-10-14 16:52:11,612 INFO L226 Difference]: Without dead ends: 185 [2018-10-14 16:52:11,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2847 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=1846, Invalid=15710, Unknown=0, NotChecked=0, Total=17556 [2018-10-14 16:52:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-14 16:52:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2018-10-14 16:52:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-14 16:52:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-14 16:52:11,621 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 160 [2018-10-14 16:52:11,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:11,621 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-14 16:52:11,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:52:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-14 16:52:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-14 16:52:11,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:11,624 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:11,625 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:11,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash 64711470, now seen corresponding path program 8 times [2018-10-14 16:52:11,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:13,093 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:52:13,378 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:52:13,657 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:52:13,936 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-14 16:52:14,188 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 16:52:14,456 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 16:52:14,666 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 16:52:14,971 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2018-10-14 16:52:15,438 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 16:52:15,656 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 16:52:15,867 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-14 16:52:16,107 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-14 16:52:16,415 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-14 16:52:16,839 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-14 16:52:17,154 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:52:17,468 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:52:17,766 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 16:52:18,063 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 16:52:18,353 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 16:52:18,606 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-14 16:52:18,852 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 16:52:19,099 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 16:52:19,351 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:52:19,593 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:52:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:23,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:23,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-14 16:52:23,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-14 16:52:23,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-14 16:52:23,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:52:23,443 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 68 states. [2018-10-14 16:52:26,401 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-14 16:52:26,844 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-14 16:52:27,245 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 16:52:28,058 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-10-14 16:52:28,506 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 16:52:28,998 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-14 16:52:29,597 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-14 16:52:30,498 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-14 16:52:31,157 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-14 16:52:31,996 WARN L179 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 204 [2018-10-14 16:52:33,019 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 236 [2018-10-14 16:52:33,606 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-14 16:52:34,067 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 16:52:34,977 WARN L179 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 219 [2018-10-14 16:52:35,803 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-14 16:52:36,427 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-14 16:52:37,368 WARN L179 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-14 16:52:38,385 WARN L179 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 249 [2018-10-14 16:52:38,977 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-14 16:52:39,444 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-10-14 16:52:40,271 WARN L179 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2018-10-14 16:52:41,062 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:52:41,631 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 16:52:42,110 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 16:52:42,726 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-10-14 16:52:43,300 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-14 16:52:43,738 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 16:52:44,549 WARN L179 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2018-10-14 16:52:45,317 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 16:52:45,871 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-14 16:52:46,346 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 16:52:46,894 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-14 16:52:47,471 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-14 16:52:47,921 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-14 16:52:48,777 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2018-10-14 16:52:49,576 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-14 16:52:50,124 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:52:50,582 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-14 16:52:51,096 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-14 16:52:51,594 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 16:52:52,008 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-14 16:52:52,852 WARN L179 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2018-10-14 16:52:53,586 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 16:52:54,101 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 16:52:54,542 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 16:52:55,043 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-14 16:52:55,515 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-14 16:52:55,909 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:52:56,617 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2018-10-14 16:52:57,329 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 16:52:57,880 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-14 16:52:58,330 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:52:58,787 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:52:59,216 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:52:59,596 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:53:00,422 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:53:00,866 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:53:01,246 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 16:53:01,690 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 16:53:02,549 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-14 16:53:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:02,679 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-14 16:53:02,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-14 16:53:02,688 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 173 [2018-10-14 16:53:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:02,689 INFO L225 Difference]: With dead ends: 198 [2018-10-14 16:53:02,690 INFO L226 Difference]: Without dead ends: 198 [2018-10-14 16:53:02,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=2069, Invalid=19101, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:53:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-14 16:53:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2018-10-14 16:53:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-14 16:53:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-14 16:53:02,697 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 173 [2018-10-14 16:53:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:02,697 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-14 16:53:02,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-14 16:53:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-14 16:53:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 16:53:02,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:02,700 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:53:02,701 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:02,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2054085891, now seen corresponding path program 9 times [2018-10-14 16:53:02,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:03,599 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 16:53:03,997 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-14 16:53:04,781 WARN L179 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-14 16:53:05,193 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-14 16:53:05,610 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2018-10-14 16:53:06,071 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2018-10-14 16:53:06,461 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-14 16:53:06,923 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-14 16:53:07,327 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-14 16:53:07,863 WARN L179 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-14 16:53:08,415 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-14 16:53:08,815 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-14 16:53:09,213 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-14 16:53:09,628 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-14 16:53:10,067 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2018-10-14 16:53:10,524 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 66 [2018-10-14 16:53:10,947 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-14 16:53:11,412 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-14 16:53:11,838 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2018-10-14 16:53:12,318 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2018-10-14 16:53:12,793 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 57 [2018-10-14 16:53:13,198 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2018-10-14 16:53:13,519 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-14 16:53:13,817 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-14 16:53:14,113 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-14 16:53:14,464 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-14 16:53:14,814 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-14 16:53:15,740 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-14 16:53:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:19,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:19,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 16:53:19,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 16:53:19,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 16:53:19,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:53:19,432 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 76 states. [2018-10-14 16:53:22,673 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2018-10-14 16:53:23,165 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2018-10-14 16:53:23,550 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-14 16:53:24,513 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 16:53:25,060 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 16:53:25,669 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-14 16:53:26,399 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2018-10-14 16:53:27,464 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-14 16:53:28,265 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-14 16:53:29,284 WARN L179 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 239 [2018-10-14 16:53:30,424 WARN L179 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 278 [2018-10-14 16:53:31,151 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2018-10-14 16:53:31,727 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-14 16:53:32,395 WARN L179 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2018-10-14 16:53:33,311 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-14 16:53:34,025 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2018-10-14 16:53:34,514 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-14 16:53:35,082 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2018-10-14 16:53:35,725 WARN L179 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-14 16:53:36,238 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-14 16:53:37,331 WARN L179 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 260 [2018-10-14 16:53:38,483 WARN L179 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2018-10-14 16:53:39,867 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 264 DAG size of output: 264 [2018-10-14 16:53:41,128 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 267 DAG size of output: 267 [2018-10-14 16:53:41,987 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 240 [2018-10-14 16:53:42,976 WARN L179 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 279 [2018-10-14 16:53:44,095 WARN L179 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 276 [2018-10-14 16:53:44,948 WARN L179 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 237 [2018-10-14 16:53:46,069 WARN L179 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-14 16:53:47,484 WARN L179 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-14 16:53:48,732 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-14 16:53:49,676 WARN L179 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-14 16:53:50,693 WARN L179 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 271 [2018-10-14 16:53:51,751 WARN L179 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 270 [2018-10-14 16:53:52,624 WARN L179 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 238 [2018-10-14 16:53:53,645 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 242 [2018-10-14 16:53:54,781 WARN L179 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-14 16:53:55,812 WARN L179 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2018-10-14 16:53:56,644 WARN L179 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 234 [2018-10-14 16:53:57,610 WARN L179 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 261 [2018-10-14 16:53:58,561 WARN L179 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 260 [2018-10-14 16:53:59,480 WARN L179 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 233 [2018-10-14 16:54:00,393 WARN L179 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2018-10-14 16:54:01,355 WARN L179 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-14 16:54:02,321 WARN L179 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-14 16:54:03,145 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-14 16:54:04,066 WARN L179 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 249 [2018-10-14 16:54:05,094 WARN L179 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 248 [2018-10-14 16:54:05,949 WARN L179 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-14 16:54:06,889 WARN L179 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 233 [2018-10-14 16:54:07,880 WARN L179 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-14 16:54:08,891 WARN L179 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-14 16:54:09,783 WARN L179 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2018-10-14 16:54:10,694 WARN L179 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-14 16:54:11,609 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 233 [2018-10-14 16:54:12,436 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-14 16:54:13,317 WARN L179 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-14 16:54:14,233 WARN L179 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-14 16:54:15,196 WARN L179 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-14 16:54:16,013 WARN L179 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 213 [2018-10-14 16:54:16,872 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-14 16:54:17,738 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 219 [2018-10-14 16:54:18,536 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2018-10-14 16:54:19,341 WARN L179 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 212 [2018-10-14 16:54:20,290 WARN L179 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2018-10-14 16:54:20,822 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:54:21,342 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-14 16:54:21,900 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-14 16:54:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:21,976 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-14 16:54:21,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-14 16:54:21,976 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 186 [2018-10-14 16:54:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:21,978 INFO L225 Difference]: With dead ends: 211 [2018-10-14 16:54:21,979 INFO L226 Difference]: Without dead ends: 211 [2018-10-14 16:54:21,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=3613, Invalid=22469, Unknown=0, NotChecked=0, Total=26082 [2018-10-14 16:54:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-14 16:54:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2018-10-14 16:54:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-14 16:54:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-14 16:54:21,984 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 186 [2018-10-14 16:54:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:21,985 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-14 16:54:21,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 16:54:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-14 16:54:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-14 16:54:21,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:21,988 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:54:21,988 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:21,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:21,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1601360782, now seen corresponding path program 10 times [2018-10-14 16:54:21,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:23,547 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-14 16:54:24,026 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-14 16:54:24,533 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-14 16:54:25,140 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 64 [2018-10-14 16:54:25,623 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 16:54:26,089 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 16:54:26,542 WARN L179 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 16:54:27,123 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 67 [2018-10-14 16:54:27,708 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 16:54:28,186 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 16:54:28,648 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-14 16:54:29,113 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-14 16:54:29,666 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-14 16:54:30,326 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2018-10-14 16:54:30,887 WARN L179 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 16:54:31,444 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 16:54:31,978 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 16:54:32,505 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 16:54:33,101 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2018-10-14 16:54:33,529 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-14 16:54:33,958 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 16:54:34,375 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 16:54:34,810 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 16:54:35,288 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 16:54:35,756 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-14 16:54:36,085 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:54:36,407 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 16:54:36,724 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 16:54:37,038 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 16:54:37,344 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 16:54:37,638 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-14 16:54:37,887 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 16:54:38,143 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:54:38,390 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:54:38,638 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 16:54:38,875 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 16:54:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:42,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:42,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-14 16:54:42,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-14 16:54:42,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-14 16:54:42,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2018-10-14 16:54:42,800 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 81 states. [2018-10-14 16:54:46,218 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-14 16:54:46,766 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-14 16:54:47,118 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-14 16:54:48,082 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:54:48,653 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-14 16:54:49,302 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-14 16:54:50,067 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2018-10-14 16:54:51,344 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2018-10-14 16:54:52,342 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-14 16:54:53,550 WARN L179 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 251 [2018-10-14 16:54:54,876 WARN L179 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 291 [2018-10-14 16:54:55,717 WARN L179 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-14 16:54:56,343 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-14 16:54:57,496 WARN L179 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 264 [2018-10-14 16:54:58,863 WARN L179 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 267 [2018-10-14 16:55:00,059 WARN L179 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-14 16:55:01,473 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 270 DAG size of output: 253 [2018-10-14 16:55:03,042 WARN L179 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 322 DAG size of output: 303 [2018-10-14 16:55:04,250 WARN L179 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 301 [2018-10-14 16:55:05,195 WARN L179 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 251 [2018-10-14 16:55:06,477 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 275 DAG size of output: 267 [2018-10-14 16:55:07,955 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 279 DAG size of output: 272 [2018-10-14 16:55:09,303 WARN L179 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 283 DAG size of output: 275 [2018-10-14 16:55:10,294 WARN L179 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 258 [2018-10-14 16:55:11,457 WARN L179 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 299 [2018-10-14 16:55:12,661 WARN L179 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 297 [2018-10-14 16:55:13,676 WARN L179 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 256 [2018-10-14 16:55:14,822 WARN L179 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 268 [2018-10-14 16:55:16,092 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 278 DAG size of output: 271 [2018-10-14 16:55:17,322 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 282 DAG size of output: 274 [2018-10-14 16:55:18,292 WARN L179 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 251 [2018-10-14 16:55:19,384 WARN L179 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-14 16:55:20,546 WARN L179 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 283 [2018-10-14 16:55:21,613 WARN L179 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 249 [2018-10-14 16:55:22,756 WARN L179 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2018-10-14 16:55:23,943 WARN L179 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 258 [2018-10-14 16:55:25,111 WARN L179 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 261 [2018-10-14 16:55:26,065 WARN L179 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 246 [2018-10-14 16:55:27,176 WARN L179 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 275 [2018-10-14 16:55:28,251 WARN L179 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 273 [2018-10-14 16:55:29,220 WARN L179 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 244 [2018-10-14 16:55:30,288 WARN L179 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 250 [2018-10-14 16:55:31,483 WARN L179 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 253 [2018-10-14 16:55:32,623 WARN L179 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 256 [2018-10-14 16:55:33,560 WARN L179 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 240 [2018-10-14 16:55:34,619 WARN L179 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 263 [2018-10-14 16:55:35,703 WARN L179 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 261 [2018-10-14 16:55:36,747 WARN L179 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-14 16:55:37,846 WARN L179 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 252 [2018-10-14 16:55:38,993 WARN L179 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 255 [2018-10-14 16:55:40,184 WARN L179 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 258 [2018-10-14 16:55:41,128 WARN L179 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-14 16:55:42,246 WARN L179 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 257 [2018-10-14 16:55:43,281 WARN L179 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2018-10-14 16:55:44,214 WARN L179 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 232 [2018-10-14 16:55:45,226 WARN L179 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 238 [2018-10-14 16:55:46,297 WARN L179 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 241 [2018-10-14 16:55:47,441 WARN L179 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 244 [2018-10-14 16:55:48,369 WARN L179 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-14 16:55:49,371 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 243 [2018-10-14 16:55:50,370 WARN L179 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-14 16:55:51,340 WARN L179 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-14 16:55:52,409 WARN L179 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-14 16:55:53,426 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-14 16:55:54,479 WARN L179 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 238 [2018-10-14 16:55:55,470 WARN L179 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 223 [2018-10-14 16:55:56,518 WARN L179 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 229 [2018-10-14 16:55:57,621 WARN L179 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 224 [2018-10-14 16:55:58,612 WARN L179 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-14 16:55:59,667 WARN L179 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-14 16:56:00,336 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-14 16:56:00,969 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:56:01,632 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-14 16:56:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:56:01,709 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-14 16:56:01,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:56:01,709 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 199 [2018-10-14 16:56:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:56:01,711 INFO L225 Difference]: With dead ends: 224 [2018-10-14 16:56:01,711 INFO L226 Difference]: Without dead ends: 224 [2018-10-14 16:56:01,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6186 ImplicationChecksByTransitivity, 93.9s TimeCoverageRelationStatistics Valid=4203, Invalid=25209, Unknown=0, NotChecked=0, Total=29412 [2018-10-14 16:56:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-14 16:56:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2018-10-14 16:56:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-14 16:56:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-14 16:56:01,717 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 199 [2018-10-14 16:56:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:56:01,717 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-14 16:56:01,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-14 16:56:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-14 16:56:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-14 16:56:01,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:56:01,720 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:56:01,721 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:56:01,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:56:01,721 INFO L82 PathProgramCache]: Analyzing trace with hash -999401827, now seen corresponding path program 11 times [2018-10-14 16:56:01,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:56:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:56:04,292 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-14 16:56:04,979 WARN L179 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-14 16:56:05,682 WARN L179 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 72 [2018-10-14 16:56:06,345 WARN L179 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 69 [2018-10-14 16:56:06,985 WARN L179 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-14 16:56:07,719 WARN L179 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-14 16:56:08,385 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-14 16:56:09,243 WARN L179 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 72 [2018-10-14 16:56:10,072 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-14 16:56:10,743 WARN L179 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 66 [2018-10-14 16:56:11,411 WARN L179 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 64 [2018-10-14 16:56:12,063 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 64 [2018-10-14 16:56:12,856 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 75 [2018-10-14 16:56:13,637 WARN L179 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 77 [2018-10-14 16:56:14,347 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 72 [2018-10-14 16:56:15,044 WARN L179 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 72 [2018-10-14 16:56:15,731 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2018-10-14 16:56:16,448 WARN L179 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2018-10-14 16:56:17,144 WARN L179 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2018-10-14 16:56:17,764 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 69 [2018-10-14 16:56:18,321 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2018-10-14 16:56:18,857 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2018-10-14 16:56:19,389 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2018-10-14 16:56:19,954 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2018-10-14 16:56:20,518 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 62 [2018-10-14 16:56:20,860 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-14 16:56:21,201 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-14 16:56:21,558 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-14 16:56:21,894 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-14 16:56:22,255 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-14 16:56:22,759 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 16:56:23,067 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:56:23,366 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-14 16:56:23,674 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-14 16:56:23,975 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-14 16:56:24,289 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-14 16:56:24,628 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-14 16:56:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:56:30,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:56:30,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-14 16:56:30,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-14 16:56:30,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-14 16:56:30,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=7052, Unknown=0, NotChecked=0, Total=7482 [2018-10-14 16:56:30,256 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 87 states. [2018-10-14 16:56:32,334 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-14 16:56:35,020 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2018-10-14 16:56:35,612 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 137 [2018-10-14 16:56:35,999 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 16:56:37,191 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 16:56:37,964 WARN L179 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:56:38,730 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-14 16:56:39,620 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-10-14 16:56:40,988 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2018-10-14 16:56:42,089 WARN L179 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2018-10-14 16:56:43,488 WARN L179 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 268 [2018-10-14 16:56:45,024 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 352 DAG size of output: 311 [2018-10-14 16:56:45,958 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-14 16:56:46,700 WARN L179 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2018-10-14 16:56:48,102 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 291 DAG size of output: 284 [2018-10-14 16:56:49,877 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 296 DAG size of output: 287 [2018-10-14 16:56:51,357 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 301 DAG size of output: 290 [2018-10-14 16:56:52,878 WARN L179 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 290 DAG size of output: 273 [2018-10-14 16:56:54,736 WARN L179 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 348 DAG size of output: 325 [2018-10-14 16:56:56,035 WARN L179 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 325 [2018-10-14 16:56:57,086 WARN L179 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2018-10-14 16:56:58,376 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 288 DAG size of output: 280 [2018-10-14 16:56:59,960 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 293 DAG size of output: 283 [2018-10-14 16:57:01,330 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 298 DAG size of output: 286 [2018-10-14 16:57:02,379 WARN L179 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 267 [2018-10-14 16:57:03,678 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 336 DAG size of output: 314 [2018-10-14 16:57:05,002 WARN L179 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 315 [2018-10-14 16:57:06,063 WARN L179 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 268 [2018-10-14 16:57:07,411 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 305 DAG size of output: 296 [2018-10-14 16:57:09,195 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 310 DAG size of output: 297 [2018-10-14 16:57:10,655 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 315 DAG size of output: 300 [2018-10-14 16:57:11,744 WARN L179 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 266 [2018-10-14 16:57:13,018 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 330 DAG size of output: 306 [2018-10-14 16:57:14,422 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 321 DAG size of output: 309 [2018-10-14 16:57:15,492 WARN L179 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 269 [2018-10-14 16:57:16,767 WARN L179 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 273 [2018-10-14 16:57:18,033 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 289 DAG size of output: 276 [2018-10-14 16:57:19,340 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 294 DAG size of output: 279 [2018-10-14 16:57:20,366 WARN L179 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 261 [2018-10-14 16:57:21,586 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 320 DAG size of output: 296 [2018-10-14 16:57:22,883 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 311 DAG size of output: 295 [2018-10-14 16:57:23,998 WARN L179 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 260 [2018-10-14 16:57:25,168 WARN L179 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 273 [2018-10-14 16:57:26,423 WARN L179 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 276 [2018-10-14 16:57:27,732 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 295 DAG size of output: 279 [2018-10-14 16:57:28,760 WARN L179 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 254 [2018-10-14 16:57:29,971 WARN L179 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 282 [2018-10-14 16:57:31,176 WARN L179 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 285 [2018-10-14 16:57:32,200 WARN L179 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 257 [2018-10-14 16:57:33,334 WARN L179 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 261 [2018-10-14 16:57:34,523 WARN L179 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 264 [2018-10-14 16:57:35,752 WARN L179 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 267 [2018-10-14 16:57:36,765 WARN L179 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-14 16:57:37,918 WARN L179 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 272 [2018-10-14 16:57:39,078 WARN L179 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 275 [2018-10-14 16:57:40,163 WARN L179 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 252 [2018-10-14 16:57:41,255 WARN L179 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 256 [2018-10-14 16:57:42,441 WARN L179 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 259 [2018-10-14 16:57:43,659 WARN L179 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 262 [2018-10-14 16:57:44,712 WARN L179 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 243 [2018-10-14 16:57:45,852 WARN L179 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 260 [2018-10-14 16:57:47,021 WARN L179 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 263 [2018-10-14 16:57:48,061 WARN L179 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 246 [2018-10-14 16:57:49,159 WARN L179 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-14 16:57:50,333 WARN L179 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 253 [2018-10-14 16:57:51,503 WARN L179 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 256 [2018-10-14 16:57:52,513 WARN L179 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 239 [2018-10-14 16:57:53,604 WARN L179 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 252 [2018-10-14 16:57:54,681 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 252 [2018-10-14 16:57:55,686 WARN L179 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 239 [2018-10-14 16:57:56,712 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 243 [2018-10-14 16:57:57,774 WARN L179 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 246 [2018-10-14 16:57:58,848 WARN L179 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 249 [2018-10-14 16:57:59,813 WARN L179 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-14 16:58:00,839 WARN L179 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 238 [2018-10-14 16:58:01,879 WARN L179 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 238 [2018-10-14 16:58:02,866 WARN L179 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 232 [2018-10-14 16:58:03,976 WARN L179 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-14 16:58:04,658 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-14 16:58:05,323 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-14 16:58:06,024 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-14 16:58:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:58:06,126 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-14 16:58:06,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-14 16:58:06,127 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 212 [2018-10-14 16:58:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:58:06,128 INFO L225 Difference]: With dead ends: 237 [2018-10-14 16:58:06,128 INFO L226 Difference]: Without dead ends: 237 [2018-10-14 16:58:06,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 115.5s TimeCoverageRelationStatistics Valid=4610, Invalid=29430, Unknown=0, NotChecked=0, Total=34040 [2018-10-14 16:58:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-14 16:58:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 226. [2018-10-14 16:58:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-14 16:58:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-14 16:58:06,134 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 212 [2018-10-14 16:58:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:58:06,135 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-14 16:58:06,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-14 16:58:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-14 16:58:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-14 16:58:06,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:58:06,136 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:58:06,137 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:58:06,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:58:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1233028078, now seen corresponding path program 12 times [2018-10-14 16:58:06,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:58:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:58:08,944 WARN L179 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-14 16:58:10,019 WARN L179 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-14 16:58:11,093 WARN L179 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 78 [2018-10-14 16:58:12,123 WARN L179 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 75 [2018-10-14 16:58:12,998 WARN L179 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 16:58:14,011 WARN L179 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 16:58:15,043 WARN L179 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 16:58:16,270 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 301 DAG size of output: 78 [2018-10-14 16:58:17,488 WARN L179 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 16:58:18,529 WARN L179 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 16:58:19,568 WARN L179 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-14 16:58:20,568 WARN L179 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-14 16:58:21,725 WARN L179 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 81 [2018-10-14 16:58:22,945 WARN L179 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 83 [2018-10-14 16:58:24,087 WARN L179 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-14 16:58:25,217 WARN L179 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-14 16:58:26,352 WARN L179 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-14 16:58:27,412 WARN L179 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-14 16:58:28,496 WARN L179 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 77 [2018-10-14 16:58:29,326 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 78 [2018-10-14 16:58:30,149 WARN L179 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 75 [2018-10-14 16:58:30,967 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 75 [2018-10-14 16:58:31,775 WARN L179 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 73 [2018-10-14 16:58:32,639 WARN L179 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-14 16:58:33,515 WARN L179 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 68 [2018-10-14 16:58:34,103 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-14 16:58:34,696 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 16:58:35,274 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 16:58:35,857 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 16:58:36,412 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 16:58:37,037 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2018-10-14 16:58:37,502 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-14 16:58:37,963 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 16:58:38,432 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 16:58:38,888 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 16:58:39,332 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 16:58:39,828 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-14 16:58:40,184 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:58:40,532 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 16:58:40,881 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 16:58:41,216 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 16:58:41,560 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 16:58:41,884 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-14 16:58:42,158 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 16:58:42,433 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:58:42,705 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 16:58:42,974 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 16:58:43,239 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 16:58:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:58:48,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:58:48,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-14 16:58:48,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-14 16:58:48,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-14 16:58:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=8110, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:58:48,086 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 93 states. [2018-10-14 16:58:52,327 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109