java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:39:33,881 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:39:33,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:39:33,894 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:39:33,895 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:39:33,896 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:39:33,897 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:39:33,899 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:39:33,901 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:39:33,902 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:39:33,903 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:39:33,903 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:39:33,904 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:39:33,905 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:39:33,906 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:39:33,907 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:39:33,908 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:39:33,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:39:33,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:39:33,913 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:39:33,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:39:33,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:39:33,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 16:39:33,918 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 16:39:33,919 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 16:39:33,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 16:39:33,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 16:39:33,921 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 16:39:33,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 16:39:33,924 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 16:39:33,924 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 16:39:33,925 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-14 16:39:33,928 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-14 16:39:33,928 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-14 16:39:33,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-14 16:39:33,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-14 16:39:33,931 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 16:39:33,940 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:39:33,940 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:39:33,941 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:39:33,941 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:39:33,941 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:39:33,942 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:39:33,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:39:33,943 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:39:33,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:39:33,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:39:33,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:39:33,943 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:39:33,944 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:39:33,945 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:39:33,945 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:39:33,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:39:34,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:39:34,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:39:34,012 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:39:34,013 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:39:34,013 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-14 16:39:34,014 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-14 16:39:34,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:39:34,088 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:39:34,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:39:34,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:39:34,090 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:39:34,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/1) ... [2018-10-14 16:39:34,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:39:34,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:39:34,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:39:34,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:39:34,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (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 16:39:34,251 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:39:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:39:34,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:39:34,951 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:39:34,952 INFO L202 PluginConnector]: Adding new model cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:34 BoogieIcfgContainer [2018-10-14 16:39:34,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:39:34,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:39:34,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:39:34,957 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:39:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:39:34" (1/2) ... [2018-10-14 16:39:34,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f664ddb and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:34, skipping insertion in model container [2018-10-14 16:39:34,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:34" (2/2) ... [2018-10-14 16:39:34,961 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-14 16:39:34,971 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:39:34,980 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:39:34,997 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:39:35,021 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:39:35,022 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:39:35,022 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:39:35,022 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:39:35,022 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:39:35,022 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:39:35,022 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:39:35,023 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:39:35,023 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:39:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-10-14 16:39:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-14 16:39:35,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:35,051 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:39:35,053 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:35,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:35,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1572747597, now seen corresponding path program 1 times [2018-10-14 16:39:35,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:39:35,916 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 16:39:35,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:39:35,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-14 16:39:35,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:39:35,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:39:35,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:39:35,946 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 12 states. [2018-10-14 16:39:36,604 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:39:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:39:37,378 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-14 16:39:37,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 16:39:37,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-10-14 16:39:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:39:37,393 INFO L225 Difference]: With dead ends: 92 [2018-10-14 16:39:37,393 INFO L226 Difference]: Without dead ends: 92 [2018-10-14 16:39:37,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:39:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-14 16:39:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2018-10-14 16:39:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-14 16:39:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-14 16:39:37,442 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 67 [2018-10-14 16:39:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:39:37,443 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-14 16:39:37,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:39:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-14 16:39:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-14 16:39:37,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:37,447 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:39:37,447 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:37,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:37,448 INFO L82 PathProgramCache]: Analyzing trace with hash 950296764, now seen corresponding path program 1 times [2018-10-14 16:39:37,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:39:38,233 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 16:39:38,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:39:38,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 16:39:38,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 16:39:38,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 16:39:38,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:39:38,238 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 22 states. [2018-10-14 16:39:40,234 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-14 16:39:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:39:40,619 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-14 16:39:40,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:39:40,620 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2018-10-14 16:39:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:39:40,624 INFO L225 Difference]: With dead ends: 105 [2018-10-14 16:39:40,625 INFO L226 Difference]: Without dead ends: 105 [2018-10-14 16:39:40,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:39:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-14 16:39:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2018-10-14 16:39:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-14 16:39:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-14 16:39:40,638 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 80 [2018-10-14 16:39:40,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:39:40,638 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-14 16:39:40,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 16:39:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-14 16:39:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-14 16:39:40,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:40,641 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:39:40,641 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:40,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:40,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2086667693, now seen corresponding path program 2 times [2018-10-14 16:39:40,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:39:41,314 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2018-10-14 16:39:41,653 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2018-10-14 16:39:42,379 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 16:39:42,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:39:42,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-14 16:39:42,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-14 16:39:42,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-14 16:39:42,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:39:42,381 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 32 states. [2018-10-14 16:39:44,644 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-14 16:39:44,875 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-14 16:39:45,105 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-14 16:39:45,645 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:39:45,875 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-14 16:39:46,074 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-14 16:39:46,303 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-14 16:39:46,651 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-14 16:39:46,944 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-14 16:39:47,153 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-14 16:39:47,361 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-14 16:39:47,579 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2018-10-14 16:39:47,795 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:39:48,499 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-14 16:39:48,729 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-14 16:39:48,936 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:39:49,198 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-14 16:39:49,627 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-14 16:39:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:39:49,684 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-14 16:39:49,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:39:49,688 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 93 [2018-10-14 16:39:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:39:49,690 INFO L225 Difference]: With dead ends: 118 [2018-10-14 16:39:49,690 INFO L226 Difference]: Without dead ends: 118 [2018-10-14 16:39:49,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=732, Invalid=3824, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:39:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-14 16:39:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2018-10-14 16:39:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-14 16:39:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-14 16:39:49,702 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 93 [2018-10-14 16:39:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:39:49,705 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-14 16:39:49,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-14 16:39:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-14 16:39:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 16:39:49,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:39:49,707 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:39:49,709 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:39:49,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:39:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash 393850972, now seen corresponding path program 3 times [2018-10-14 16:39:49,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:39:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:39:51,316 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-14 16:39:52,118 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 16:39:52,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:39:52,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-14 16:39:52,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-14 16:39:52,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-14 16:39:52,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:39:52,120 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 40 states. [2018-10-14 16:39:54,286 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-14 16:39:54,629 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:39:54,865 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-14 16:39:55,436 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-14 16:39:55,647 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-14 16:39:55,887 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-14 16:39:56,264 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-14 16:39:56,680 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-14 16:39:57,017 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-14 16:39:57,278 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-14 16:39:57,570 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-14 16:39:57,868 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-14 16:39:58,105 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:39:58,393 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-10-14 16:39:58,790 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2018-10-14 16:39:59,150 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2018-10-14 16:39:59,445 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-14 16:39:59,767 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-14 16:40:00,019 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:40:00,223 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-14 16:40:00,626 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-14 16:40:00,877 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:40:01,089 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-14 16:40:01,332 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2018-10-14 16:40:01,908 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:40:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:40:01,945 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-14 16:40:01,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-14 16:40:01,946 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 106 [2018-10-14 16:40:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:40:01,949 INFO L225 Difference]: With dead ends: 131 [2018-10-14 16:40:01,949 INFO L226 Difference]: Without dead ends: 131 [2018-10-14 16:40:01,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1102, Invalid=5704, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:40:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-14 16:40:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2018-10-14 16:40:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-14 16:40:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-14 16:40:01,961 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 106 [2018-10-14 16:40:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:40:01,961 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-14 16:40:01,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-14 16:40:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-14 16:40:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-14 16:40:01,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:40:01,964 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:40:01,964 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:40:01,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:40:01,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1149167091, now seen corresponding path program 4 times [2018-10-14 16:40:01,965 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:40:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:40:04,749 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 16:40:04,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:40:04,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-14 16:40:04,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-14 16:40:04,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-14 16:40:04,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1878, Unknown=0, NotChecked=0, Total=1980 [2018-10-14 16:40:04,752 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 45 states. [2018-10-14 16:40:06,754 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:40:06,983 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2018-10-14 16:40:07,167 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-14 16:40:07,678 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-14 16:40:08,200 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-14 16:40:08,541 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2018-10-14 16:40:09,263 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2018-10-14 16:40:10,074 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 141 [2018-10-14 16:40:10,544 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 144 [2018-10-14 16:40:10,927 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-10-14 16:40:11,374 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 133 [2018-10-14 16:40:11,776 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2018-10-14 16:40:12,093 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2018-10-14 16:40:12,526 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-14 16:40:13,056 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-14 16:40:13,526 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-14 16:40:13,918 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2018-10-14 16:40:14,344 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 131 [2018-10-14 16:40:14,755 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-14 16:40:15,108 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2018-10-14 16:40:15,485 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-14 16:40:16,243 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-14 16:40:16,695 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-14 16:40:17,010 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-14 16:40:17,354 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-14 16:40:17,680 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-14 16:40:17,969 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-14 16:40:18,469 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-14 16:40:18,801 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-14 16:40:19,081 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-14 16:40:19,409 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-14 16:40:19,934 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-14 16:40:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:40:19,996 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-14 16:40:19,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-14 16:40:19,998 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 119 [2018-10-14 16:40:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:40:19,999 INFO L225 Difference]: With dead ends: 144 [2018-10-14 16:40:20,000 INFO L226 Difference]: Without dead ends: 144 [2018-10-14 16:40:20,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=1220, Invalid=7710, Unknown=0, NotChecked=0, Total=8930 [2018-10-14 16:40:20,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-14 16:40:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2018-10-14 16:40:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-14 16:40:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-14 16:40:20,011 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 119 [2018-10-14 16:40:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:40:20,012 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-14 16:40:20,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-14 16:40:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-14 16:40:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-14 16:40:20,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:40:20,014 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:40:20,014 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:40:20,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:40:20,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1021622268, now seen corresponding path program 5 times [2018-10-14 16:40:20,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:40:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:40:24,621 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 16:40:24,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:40:24,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:40:24,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:40:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:40:24,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:40:24,623 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 52 states. [2018-10-14 16:40:26,772 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-14 16:40:27,034 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-14 16:40:27,912 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 16:40:28,192 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-14 16:40:28,564 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:40:29,091 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-14 16:40:29,549 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:40:30,055 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2018-10-14 16:40:30,647 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2018-10-14 16:40:30,978 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 16:40:31,239 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 16:40:31,536 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-14 16:40:31,987 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 16:40:32,318 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 16:40:32,771 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2018-10-14 16:40:33,297 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2018-10-14 16:40:33,798 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-10-14 16:40:34,222 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2018-10-14 16:40:34,735 WARN L179 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-14 16:40:35,408 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2018-10-14 16:40:35,969 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2018-10-14 16:40:36,397 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-14 16:40:36,881 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-14 16:40:37,378 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2018-10-14 16:40:37,839 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-14 16:40:38,325 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-14 16:40:38,896 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-14 16:40:39,395 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2018-10-14 16:40:39,848 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-14 16:40:40,315 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2018-10-14 16:40:40,794 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-14 16:40:41,194 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-14 16:40:41,641 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-14 16:40:42,099 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-14 16:40:42,366 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 16:40:42,606 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 16:40:42,876 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 16:40:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:40:42,917 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-14 16:40:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-14 16:40:42,919 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 132 [2018-10-14 16:40:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:40:42,920 INFO L225 Difference]: With dead ends: 157 [2018-10-14 16:40:42,920 INFO L226 Difference]: Without dead ends: 157 [2018-10-14 16:40:42,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=1683, Invalid=10089, Unknown=0, NotChecked=0, Total=11772 [2018-10-14 16:40:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-14 16:40:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2018-10-14 16:40:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-14 16:40:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-14 16:40:42,934 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 132 [2018-10-14 16:40:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:40:42,935 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-14 16:40:42,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:40:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-14 16:40:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-14 16:40:42,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:40:42,937 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:40:42,937 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:40:42,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:40:42,938 INFO L82 PathProgramCache]: Analyzing trace with hash 924284525, now seen corresponding path program 6 times [2018-10-14 16:40:42,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:40:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:40:45,109 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-14 16:40:45,451 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 16:40:45,861 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-10-14 16:40:46,069 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-14 16:40:46,282 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-14 16:40:48,673 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 16:40:48,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:40:48,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:40:48,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:40:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:40:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:40:48,676 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 57 states. [2018-10-14 16:40:50,839 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2018-10-14 16:40:51,219 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-14 16:40:51,546 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:40:52,344 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 16:40:52,671 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 16:40:53,026 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:40:53,486 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 16:40:54,155 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-14 16:40:54,657 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 16:40:55,325 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2018-10-14 16:40:56,097 WARN L179 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2018-10-14 16:40:56,550 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 16:40:56,881 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:40:57,520 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-14 16:40:58,440 WARN L179 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2018-10-14 16:40:59,146 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2018-10-14 16:40:59,696 WARN L179 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 168 [2018-10-14 16:41:00,343 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2018-10-14 16:41:01,093 WARN L179 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2018-10-14 16:41:01,616 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-14 16:41:02,349 WARN L179 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2018-10-14 16:41:03,263 WARN L179 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 187 [2018-10-14 16:41:04,048 WARN L179 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2018-10-14 16:41:04,633 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-14 16:41:05,280 WARN L179 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2018-10-14 16:41:05,942 WARN L179 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 183 [2018-10-14 16:41:06,489 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2018-10-14 16:41:07,135 WARN L179 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 172 [2018-10-14 16:41:07,821 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 175 [2018-10-14 16:41:08,503 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 178 [2018-10-14 16:41:09,044 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-14 16:41:09,647 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 177 [2018-10-14 16:41:10,231 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-14 16:41:10,757 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-14 16:41:11,424 WARN L179 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 165 [2018-10-14 16:41:12,029 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 168 [2018-10-14 16:41:12,638 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-14 16:41:13,167 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-14 16:41:13,733 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2018-10-14 16:41:14,276 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2018-10-14 16:41:14,771 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-14 16:41:15,357 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2018-10-14 16:41:15,686 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 16:41:16,039 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 16:41:16,440 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-14 16:41:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:41:16,505 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-14 16:41:16,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:41:16,506 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 145 [2018-10-14 16:41:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:41:16,507 INFO L225 Difference]: With dead ends: 170 [2018-10-14 16:41:16,508 INFO L226 Difference]: Without dead ends: 170 [2018-10-14 16:41:16,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=2001, Invalid=12279, Unknown=0, NotChecked=0, Total=14280 [2018-10-14 16:41:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-14 16:41:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2018-10-14 16:41:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-14 16:41:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-14 16:41:16,517 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 145 [2018-10-14 16:41:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:41:16,518 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-14 16:41:16,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:41:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-14 16:41:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-14 16:41:16,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:41:16,520 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:41:16,520 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:41:16,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:41:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash 749696924, now seen corresponding path program 7 times [2018-10-14 16:41:16,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:41:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:41:17,616 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-14 16:41:17,878 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-14 16:41:18,143 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-14 16:41:18,407 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-14 16:41:18,652 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:41:18,882 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:41:19,122 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:41:19,402 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-10-14 16:41:19,700 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:41:19,947 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:41:20,194 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 16:41:20,450 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 16:41:20,754 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-14 16:41:21,081 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-14 16:41:21,446 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 16:41:21,770 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 16:41:22,047 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-14 16:41:22,298 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-14 16:41:22,575 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-14 16:41:22,752 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-14 16:41:25,835 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 16:41:25,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:41:25,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:41:25,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:41:25,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:41:25,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3635, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:41:25,838 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 62 states. [2018-10-14 16:41:28,598 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-14 16:41:28,984 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-10-14 16:41:29,225 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 16:41:29,905 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 16:41:30,306 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 16:41:30,736 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 16:41:31,267 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 16:41:32,133 WARN L179 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-14 16:41:32,744 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-14 16:41:33,481 WARN L179 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 187 [2018-10-14 16:41:34,385 WARN L179 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 216 [2018-10-14 16:41:34,909 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-14 16:41:35,303 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 16:41:36,080 WARN L179 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2018-10-14 16:41:37,183 WARN L179 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2018-10-14 16:41:37,994 WARN L179 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2018-10-14 16:41:38,713 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 193 [2018-10-14 16:41:39,569 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 226 [2018-10-14 16:41:40,072 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-14 16:41:40,460 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-14 16:41:40,947 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 16:41:41,681 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-14 16:41:42,285 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 16:41:42,706 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 16:41:43,187 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 16:41:43,659 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-14 16:41:44,035 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 16:41:44,808 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 198 [2018-10-14 16:41:45,805 WARN L179 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2018-10-14 16:41:46,604 WARN L179 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2018-10-14 16:41:47,103 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-14 16:41:47,568 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-14 16:41:48,015 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 16:41:48,370 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-14 16:41:48,779 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 16:41:49,429 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 16:41:49,874 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-14 16:41:50,271 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 16:41:50,702 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 16:41:51,132 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:41:51,481 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 16:41:52,191 WARN L179 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-14 16:41:53,136 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-14 16:41:53,564 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:41:53,947 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 16:41:54,366 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 16:41:54,756 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 16:41:55,093 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:41:55,816 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:41:56,208 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 16:41:56,542 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 16:41:56,925 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 16:41:57,691 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 16:41:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:41:57,787 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-14 16:41:57,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-14 16:41:57,788 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 158 [2018-10-14 16:41:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:41:57,789 INFO L225 Difference]: With dead ends: 183 [2018-10-14 16:41:57,789 INFO L226 Difference]: Without dead ends: 183 [2018-10-14 16:41:57,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2847 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=1846, Invalid=15710, Unknown=0, NotChecked=0, Total=17556 [2018-10-14 16:41:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-14 16:41:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2018-10-14 16:41:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-14 16:41:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-14 16:41:57,797 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 158 [2018-10-14 16:41:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:41:57,797 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-14 16:41:57,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:41:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-14 16:41:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-14 16:41:57,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:41:57,800 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:41:57,800 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:41:57,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:41:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1670978253, now seen corresponding path program 8 times [2018-10-14 16:41:57,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:41:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:41:59,277 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-14 16:41:59,638 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-14 16:42:00,002 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-14 16:42:00,382 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-14 16:42:00,707 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:42:00,998 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:42:01,350 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:42:01,772 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-14 16:42:02,218 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:42:02,640 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:42:02,988 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 16:42:03,358 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 16:42:03,754 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-14 16:42:04,185 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-14 16:42:04,577 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-14 16:42:04,985 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-14 16:42:05,395 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 16:42:05,724 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 16:42:06,146 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:42:06,452 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-14 16:42:06,759 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 16:42:07,064 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 16:42:07,397 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:42:07,704 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:42:08,007 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-14 16:42:08,203 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-14 16:42:11,863 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 16:42:11,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:42:11,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-14 16:42:11,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-14 16:42:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-14 16:42:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:42:11,865 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 68 states. [2018-10-14 16:42:14,902 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-14 16:42:15,348 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-14 16:42:15,639 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-14 16:42:16,492 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-14 16:42:16,969 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 16:42:17,492 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 16:42:18,166 WARN L179 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2018-10-14 16:42:19,103 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-14 16:42:19,830 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2018-10-14 16:42:20,719 WARN L179 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 211 [2018-10-14 16:42:21,758 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 245 [2018-10-14 16:42:22,364 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-14 16:42:22,933 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:42:23,887 WARN L179 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 226 [2018-10-14 16:42:25,108 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2018-10-14 16:42:26,141 WARN L179 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 232 [2018-10-14 16:42:27,023 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 218 [2018-10-14 16:42:28,143 WARN L179 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 257 [2018-10-14 16:42:28,782 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-14 16:42:29,272 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-14 16:42:30,252 WARN L179 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2018-10-14 16:42:31,115 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-14 16:42:31,762 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-10-14 16:42:32,272 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-14 16:42:32,875 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-14 16:42:33,525 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-14 16:42:33,985 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 16:42:34,542 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-14 16:42:35,377 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-14 16:42:36,002 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-14 16:42:36,503 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 16:42:37,080 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-14 16:42:37,637 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-14 16:42:38,105 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 16:42:39,018 WARN L179 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2018-10-14 16:42:39,869 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:42:40,458 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 16:42:40,954 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 16:42:41,527 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 16:42:42,071 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-14 16:42:42,505 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-14 16:42:43,013 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 16:42:43,816 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-14 16:42:44,346 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 16:42:44,813 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-14 16:42:45,372 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 16:42:45,895 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-14 16:42:46,327 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-14 16:42:47,081 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2018-10-14 16:42:47,853 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 16:42:48,408 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-14 16:42:48,898 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 16:42:49,371 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-14 16:42:49,836 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-14 16:42:50,238 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 16:42:51,123 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 16:42:51,600 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 16:42:52,008 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 16:42:52,483 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-14 16:42:53,374 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 16:42:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:42:53,504 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-14 16:42:53,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-14 16:42:53,505 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 171 [2018-10-14 16:42:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:42:53,506 INFO L225 Difference]: With dead ends: 196 [2018-10-14 16:42:53,506 INFO L226 Difference]: Without dead ends: 196 [2018-10-14 16:42:53,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=2069, Invalid=19101, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:42:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-14 16:42:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2018-10-14 16:42:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-14 16:42:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-14 16:42:53,512 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 171 [2018-10-14 16:42:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:42:53,512 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-14 16:42:53,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-14 16:42:53,513 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-14 16:42:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-14 16:42:53,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:42:53,515 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:42:53,515 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:42:53,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:42:53,516 INFO L82 PathProgramCache]: Analyzing trace with hash -500961476, now seen corresponding path program 9 times [2018-10-14 16:42:53,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:42:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:42:55,173 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-14 16:42:55,686 WARN L179 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-14 16:42:56,152 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-14 16:42:56,624 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2018-10-14 16:42:57,073 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 16:42:57,526 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 16:42:57,996 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 16:42:58,592 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2018-10-14 16:42:59,193 WARN L179 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 16:42:59,685 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 16:43:00,160 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-14 16:43:00,619 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-14 16:43:01,162 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-14 16:43:01,679 WARN L179 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2018-10-14 16:43:02,159 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 16:43:02,658 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 16:43:03,143 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 16:43:03,583 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 16:43:04,163 WARN L179 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 16:43:04,540 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-14 16:43:04,914 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 16:43:05,294 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 16:43:05,656 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:43:05,981 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 16:43:06,365 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 16:43:06,626 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 16:43:06,877 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:43:07,133 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:43:07,384 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:43:07,625 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:43:07,895 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 16:43:08,844 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-10-14 16:43:11,498 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 16:43:11,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:43:11,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 16:43:11,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 16:43:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 16:43:11,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:43:11,500 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 76 states. [2018-10-14 16:43:14,921 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-14 16:43:15,410 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2018-10-14 16:43:15,750 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-14 16:43:16,731 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-14 16:43:17,296 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-14 16:43:17,914 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-14 16:43:18,619 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2018-10-14 16:43:19,740 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2018-10-14 16:43:20,575 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2018-10-14 16:43:21,583 WARN L179 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 235 [2018-10-14 16:43:22,784 WARN L179 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 274 [2018-10-14 16:43:23,549 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-14 16:43:24,158 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-14 16:43:24,885 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-14 16:43:25,825 WARN L179 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-14 16:43:26,521 WARN L179 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2018-10-14 16:43:27,021 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-14 16:43:27,572 WARN L179 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-14 16:43:28,249 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2018-10-14 16:43:28,832 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-14 16:43:30,062 WARN L179 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 254 [2018-10-14 16:43:31,259 WARN L179 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 255 [2018-10-14 16:43:32,602 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 258 DAG size of output: 258 [2018-10-14 16:43:33,913 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2018-10-14 16:43:34,870 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 236 [2018-10-14 16:43:35,858 WARN L179 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 275 [2018-10-14 16:43:36,933 WARN L179 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 272 [2018-10-14 16:43:37,816 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-14 16:43:38,936 WARN L179 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 255 [2018-10-14 16:43:40,446 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-14 16:43:41,679 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-14 16:43:42,576 WARN L179 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-14 16:43:43,601 WARN L179 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 269 [2018-10-14 16:43:44,727 WARN L179 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 268 [2018-10-14 16:43:45,681 WARN L179 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 235 [2018-10-14 16:43:46,823 WARN L179 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-14 16:43:47,955 WARN L179 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2018-10-14 16:43:49,070 WARN L179 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 251 [2018-10-14 16:43:50,019 WARN L179 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-14 16:43:51,009 WARN L179 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-14 16:43:52,028 WARN L179 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2018-10-14 16:43:52,917 WARN L179 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 229 [2018-10-14 16:43:53,935 WARN L179 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-14 16:43:55,003 WARN L179 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 241 [2018-10-14 16:43:56,108 WARN L179 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 244 [2018-10-14 16:43:56,986 WARN L179 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-14 16:43:57,977 WARN L179 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2018-10-14 16:43:58,966 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 244 [2018-10-14 16:43:59,837 WARN L179 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2018-10-14 16:44:00,838 WARN L179 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-14 16:44:01,806 WARN L179 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2018-10-14 16:44:02,788 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-14 16:44:03,690 WARN L179 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 216 [2018-10-14 16:44:04,658 WARN L179 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2018-10-14 16:44:05,675 WARN L179 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-14 16:44:06,558 WARN L179 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-14 16:44:07,460 WARN L179 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-14 16:44:08,394 WARN L179 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 222 [2018-10-14 16:44:09,350 WARN L179 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 225 [2018-10-14 16:44:10,238 WARN L179 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-14 16:44:11,177 WARN L179 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 215 [2018-10-14 16:44:12,099 WARN L179 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 215 [2018-10-14 16:44:12,959 WARN L179 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 208 [2018-10-14 16:44:13,839 WARN L179 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 208 [2018-10-14 16:44:14,765 WARN L179 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2018-10-14 16:44:15,334 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-14 16:44:15,905 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 16:44:16,479 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 16:44:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:44:16,551 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-14 16:44:16,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-14 16:44:16,553 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 184 [2018-10-14 16:44:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:44:16,554 INFO L225 Difference]: With dead ends: 209 [2018-10-14 16:44:16,554 INFO L226 Difference]: Without dead ends: 209 [2018-10-14 16:44:16,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 76.6s TimeCoverageRelationStatistics Valid=3613, Invalid=22469, Unknown=0, NotChecked=0, Total=26082 [2018-10-14 16:44:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-14 16:44:16,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-14 16:44:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-14 16:44:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-14 16:44:16,560 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 184 [2018-10-14 16:44:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:44:16,560 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-14 16:44:16,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 16:44:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-14 16:44:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-14 16:44:16,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:44:16,563 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:44:16,563 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:44:16,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:44:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1845233453, now seen corresponding path program 10 times [2018-10-14 16:44:16,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:44:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:44:18,699 WARN L179 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-14 16:44:19,314 WARN L179 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-14 16:44:19,937 WARN L179 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-14 16:44:20,640 WARN L179 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2018-10-14 16:44:21,280 WARN L179 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:44:21,897 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:44:22,494 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:44:23,279 WARN L179 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2018-10-14 16:44:23,982 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:44:24,592 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:44:25,194 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-14 16:44:25,917 WARN L179 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-14 16:44:26,596 WARN L179 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-14 16:44:27,314 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2018-10-14 16:44:27,970 WARN L179 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-14 16:44:28,639 WARN L179 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-14 16:44:29,311 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 16:44:29,881 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 16:44:30,543 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:44:31,133 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-14 16:44:31,640 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 16:44:32,148 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 16:44:32,651 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 16:44:33,087 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 16:44:33,612 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 16:44:34,010 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-14 16:44:34,403 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 16:44:34,773 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 16:44:35,153 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 16:44:35,531 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 16:44:35,958 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-14 16:44:36,286 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 16:44:36,557 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:44:36,826 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:44:37,100 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:44:37,354 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:44:37,637 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 16:44:41,688 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 16:44:41,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:44:41,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-14 16:44:41,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-14 16:44:41,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-14 16:44:41,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2018-10-14 16:44:41,689 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 81 states. [2018-10-14 16:44:45,481 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-14 16:44:46,079 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-14 16:44:46,521 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 16:44:47,651 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 16:44:48,309 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 16:44:49,020 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-14 16:44:49,917 WARN L179 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2018-10-14 16:44:51,213 WARN L179 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-10-14 16:44:52,214 WARN L179 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2018-10-14 16:44:53,424 WARN L179 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 259 [2018-10-14 16:44:54,822 WARN L179 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 303 [2018-10-14 16:44:55,688 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2018-10-14 16:44:56,422 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-10-14 16:44:57,745 WARN L179 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 275 [2018-10-14 16:44:59,344 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 285 DAG size of output: 278 [2018-10-14 16:45:00,667 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 289 DAG size of output: 281 [2018-10-14 16:45:01,758 WARN L179 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 268 [2018-10-14 16:45:02,973 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 336 DAG size of output: 315 [2018-10-14 16:45:04,255 WARN L179 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 311 [2018-10-14 16:45:05,313 WARN L179 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-14 16:45:06,682 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 294 DAG size of output: 288 [2018-10-14 16:45:08,315 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 298 DAG size of output: 291 [2018-10-14 16:45:09,785 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 302 DAG size of output: 294 [2018-10-14 16:45:10,823 WARN L179 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 272 [2018-10-14 16:45:12,138 WARN L179 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 326 DAG size of output: 313 [2018-10-14 16:45:13,445 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 317 DAG size of output: 307 [2018-10-14 16:45:14,521 WARN L179 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2018-10-14 16:45:15,912 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 289 DAG size of output: 282 [2018-10-14 16:45:17,386 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 293 DAG size of output: 286 [2018-10-14 16:45:18,824 WARN L179 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 297 DAG size of output: 289 [2018-10-14 16:45:19,828 WARN L179 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 262 [2018-10-14 16:45:21,006 WARN L179 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 297 [2018-10-14 16:45:22,315 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 303 DAG size of output: 295 [2018-10-14 16:45:23,372 WARN L179 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2018-10-14 16:45:24,617 WARN L179 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 272 [2018-10-14 16:45:25,976 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 283 DAG size of output: 276 [2018-10-14 16:45:27,405 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 287 DAG size of output: 279 [2018-10-14 16:45:28,426 WARN L179 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 256 [2018-10-14 16:45:29,586 WARN L179 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-14 16:45:30,778 WARN L179 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 283 [2018-10-14 16:45:31,867 WARN L179 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 254 [2018-10-14 16:45:33,136 WARN L179 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 266 [2018-10-14 16:45:34,423 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 276 DAG size of output: 269 [2018-10-14 16:45:35,729 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 280 DAG size of output: 272 [2018-10-14 16:45:36,766 WARN L179 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-14 16:45:37,980 WARN L179 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 273 [2018-10-14 16:45:39,164 WARN L179 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 271 [2018-10-14 16:45:40,205 WARN L179 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 248 [2018-10-14 16:45:41,393 WARN L179 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 256 [2018-10-14 16:45:42,735 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 267 DAG size of output: 260 [2018-10-14 16:45:43,977 WARN L179 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 263 [2018-10-14 16:45:45,001 WARN L179 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2018-10-14 16:45:46,122 WARN L179 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 265 [2018-10-14 16:45:47,266 WARN L179 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 259 [2018-10-14 16:45:48,327 WARN L179 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 237 [2018-10-14 16:45:49,435 WARN L179 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 248 [2018-10-14 16:45:50,578 WARN L179 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 251 [2018-10-14 16:45:51,744 WARN L179 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 254 [2018-10-14 16:45:52,802 WARN L179 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 240 [2018-10-14 16:45:53,922 WARN L179 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 253 [2018-10-14 16:45:55,038 WARN L179 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2018-10-14 16:45:56,039 WARN L179 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2018-10-14 16:45:57,099 WARN L179 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 241 [2018-10-14 16:45:58,281 WARN L179 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 244 [2018-10-14 16:45:59,384 WARN L179 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 247 [2018-10-14 16:46:00,398 WARN L179 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 233 [2018-10-14 16:46:01,465 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 239 [2018-10-14 16:46:02,549 WARN L179 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 234 [2018-10-14 16:46:03,606 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-14 16:46:04,740 WARN L179 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-14 16:46:05,417 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-14 16:46:06,072 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-14 16:46:06,756 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 16:46:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:46:06,846 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-14 16:46:06,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:46:06,847 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 197 [2018-10-14 16:46:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:46:06,849 INFO L225 Difference]: With dead ends: 222 [2018-10-14 16:46:06,849 INFO L226 Difference]: Without dead ends: 222 [2018-10-14 16:46:06,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6186 ImplicationChecksByTransitivity, 103.3s TimeCoverageRelationStatistics Valid=4203, Invalid=25209, Unknown=0, NotChecked=0, Total=29412 [2018-10-14 16:46:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-14 16:46:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2018-10-14 16:46:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-14 16:46:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-14 16:46:06,855 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 197 [2018-10-14 16:46:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:46:06,855 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-14 16:46:06,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-14 16:46:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-14 16:46:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-14 16:46:06,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:46:06,858 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:46:06,858 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:46:06,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:46:06,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1879842524, now seen corresponding path program 11 times [2018-10-14 16:46:06,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:46:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:46:08,665 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-14 16:46:09,780 WARN L179 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-14 16:46:10,616 WARN L179 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-14 16:46:11,450 WARN L179 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-14 16:46:12,336 WARN L179 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 71 [2018-10-14 16:46:13,239 WARN L179 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-14 16:46:14,085 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-14 16:46:14,930 WARN L179 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-14 16:46:15,982 WARN L179 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 74 [2018-10-14 16:46:16,915 WARN L179 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-14 16:46:17,722 WARN L179 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-14 16:46:18,635 WARN L179 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2018-10-14 16:46:19,456 WARN L179 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2018-10-14 16:46:20,330 WARN L179 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2018-10-14 16:46:21,259 WARN L179 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 78 [2018-10-14 16:46:22,109 WARN L179 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-14 16:46:22,969 WARN L179 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-14 16:46:23,890 WARN L179 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-14 16:46:24,659 WARN L179 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-14 16:46:25,558 WARN L179 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-14 16:46:26,250 WARN L179 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-14 16:46:26,928 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-14 16:46:27,625 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-14 16:46:28,304 WARN L179 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 16:46:28,971 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 16:46:29,669 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 16:46:30,181 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-14 16:46:30,682 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-14 16:46:31,186 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-14 16:46:31,697 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-14 16:46:32,193 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-14 16:46:32,704 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 16:46:33,107 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-14 16:46:33,515 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 16:46:34,010 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 16:46:34,397 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 16:46:34,790 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 16:46:35,216 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-14 16:46:35,554 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 16:46:35,870 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:46:36,212 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 16:46:36,527 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:46:36,805 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 16:46:37,113 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 16:46:41,600 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 16:46:41,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:46:41,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-14 16:46:41,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-14 16:46:41,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-14 16:46:41,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=7052, Unknown=0, NotChecked=0, Total=7482 [2018-10-14 16:46:41,601 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 87 states. [2018-10-14 16:46:43,868 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-14 16:46:45,561 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-14 16:46:46,190 WARN L179 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2018-10-14 16:46:46,591 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-10-14 16:46:47,543 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 16:46:48,216 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-14 16:46:49,007 WARN L179 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-14 16:46:49,975 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2018-10-14 16:46:51,241 WARN L179 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2018-10-14 16:46:52,353 WARN L179 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2018-10-14 16:46:53,685 WARN L179 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 288 [2018-10-14 16:46:55,289 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 384 DAG size of output: 337 [2018-10-14 16:46:56,223 WARN L179 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2018-10-14 16:46:57,006 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2018-10-14 16:46:58,416 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 309 DAG size of output: 300 [2018-10-14 16:47:00,105 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 314 DAG size of output: 303 [2018-10-14 16:47:01,645 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 319 DAG size of output: 306 [2018-10-14 16:47:03,321 WARN L179 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 306 DAG size of output: 289 [2018-10-14 16:47:05,419 WARN L179 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 365 DAG size of output: 342 [2018-10-14 16:47:06,905 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 350 DAG size of output: 342 [2018-10-14 16:47:08,115 WARN L179 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 289 [2018-10-14 16:47:09,685 WARN L179 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 317 DAG size of output: 308 [2018-10-14 16:47:11,485 WARN L179 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 322 DAG size of output: 311 [2018-10-14 16:47:13,216 WARN L179 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 327 DAG size of output: 314 [2018-10-14 16:47:14,378 WARN L179 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 291 [2018-10-14 16:47:15,782 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 353 DAG size of output: 334 [2018-10-14 16:47:17,245 WARN L179 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 344 DAG size of output: 330 [2018-10-14 16:47:18,454 WARN L179 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 283 [2018-10-14 16:47:20,055 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 320 DAG size of output: 308 [2018-10-14 16:47:21,881 WARN L179 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 325 DAG size of output: 312 [2018-10-14 16:47:23,684 WARN L179 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 330 DAG size of output: 315 [2018-10-14 16:47:24,960 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 298 DAG size of output: 291 [2018-10-14 16:47:26,409 WARN L179 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 347 DAG size of output: 329 [2018-10-14 16:47:27,925 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 338 DAG size of output: 323 [2018-10-14 16:47:29,147 WARN L179 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 285 [2018-10-14 16:47:30,729 WARN L179 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 310 DAG size of output: 298 [2018-10-14 16:47:32,317 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 315 DAG size of output: 302 [2018-10-14 16:47:33,939 WARN L179 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 320 DAG size of output: 305 [2018-10-14 16:47:35,177 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 292 DAG size of output: 278 [2018-10-14 16:47:36,578 WARN L179 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 335 DAG size of output: 310 [2018-10-14 16:47:37,993 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 326 DAG size of output: 311 [2018-10-14 16:47:39,215 WARN L179 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 279 [2018-10-14 16:47:40,670 WARN L179 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 303 DAG size of output: 291 [2018-10-14 16:47:42,167 WARN L179 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 308 DAG size of output: 295 [2018-10-14 16:47:43,738 WARN L179 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 313 DAG size of output: 298 [2018-10-14 16:47:44,953 WARN L179 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 272 [2018-10-14 16:47:46,401 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 323 DAG size of output: 298 [2018-10-14 16:47:47,791 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 314 DAG size of output: 299 [2018-10-14 16:47:49,005 WARN L179 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 273 [2018-10-14 16:47:50,432 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 294 DAG size of output: 283 [2018-10-14 16:47:51,947 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 299 DAG size of output: 286 [2018-10-14 16:47:53,463 WARN L179 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 304 DAG size of output: 289 [2018-10-14 16:47:54,663 WARN L179 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 273 [2018-10-14 16:47:56,138 WARN L179 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 313 DAG size of output: 296 [2018-10-14 16:47:57,539 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 304 DAG size of output: 290 [2018-10-14 16:47:58,738 WARN L179 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 267 [2018-10-14 16:48:00,093 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 292 DAG size of output: 281 [2018-10-14 16:48:01,584 WARN L179 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 297 DAG size of output: 284 [2018-10-14 16:48:03,023 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 302 DAG size of output: 287 [2018-10-14 16:48:04,210 WARN L179 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 267 [2018-10-14 16:48:05,544 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 299 DAG size of output: 287 [2018-10-14 16:48:06,920 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 290 DAG size of output: 281 [2018-10-14 16:48:08,155 WARN L179 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 261 [2018-10-14 16:48:09,433 WARN L179 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-14 16:48:10,728 WARN L179 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 270 [2018-10-14 16:48:12,091 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 284 DAG size of output: 273 [2018-10-14 16:48:13,237 WARN L179 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 259 [2018-10-14 16:48:14,524 WARN L179 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 272 [2018-10-14 16:48:15,768 WARN L179 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 266 [2018-10-14 16:48:16,998 WARN L179 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 253 [2018-10-14 16:48:18,185 WARN L179 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-14 16:48:19,412 WARN L179 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 260 [2018-10-14 16:48:20,642 WARN L179 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 263 [2018-10-14 16:48:21,853 WARN L179 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 247 [2018-10-14 16:48:23,062 WARN L179 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 253 [2018-10-14 16:48:24,271 WARN L179 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 253 [2018-10-14 16:48:25,426 WARN L179 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2018-10-14 16:48:26,711 WARN L179 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 253 [2018-10-14 16:48:27,481 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-14 16:48:28,225 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-14 16:48:29,030 WARN L179 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-14 16:48:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:48:29,088 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-14 16:48:29,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-14 16:48:29,089 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 210 [2018-10-14 16:48:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:48:29,090 INFO L225 Difference]: With dead ends: 235 [2018-10-14 16:48:29,091 INFO L226 Difference]: Without dead ends: 235 [2018-10-14 16:48:29,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 135.9s TimeCoverageRelationStatistics Valid=4610, Invalid=29430, Unknown=0, NotChecked=0, Total=34040 [2018-10-14 16:48:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-14 16:48:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 224. [2018-10-14 16:48:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-14 16:48:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-14 16:48:29,097 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 210 [2018-10-14 16:48:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:48:29,098 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-14 16:48:29,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-14 16:48:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-14 16:48:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-14 16:48:29,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:48:29,099 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:48:29,100 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:48:29,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:48:29,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1682556019, now seen corresponding path program 12 times [2018-10-14 16:48:29,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:48:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:48:32,375 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 160 DAG size of output: 80