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 0.1.23-502d2f4 [2018-10-12 20:59:26,862 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:59:26,863 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:59:26,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:59:26,874 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:59:26,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:59:26,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:59:26,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:59:26,880 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:59:26,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:59:26,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:59:26,882 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:59:26,883 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:59:26,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:59:26,885 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:59:26,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:59:26,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:59:26,889 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:59:26,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:59:26,893 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:59:26,894 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:59:26,895 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:59:26,897 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 20:59:26,898 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 20:59:26,898 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 20:59:26,899 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 20:59:26,900 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 20:59:26,901 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 20:59:26,901 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 20:59:26,903 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 20:59:26,903 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 20:59:26,904 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-12 20:59:26,906 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:59:26,922 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:59:26,922 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:59:26,923 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:59:26,923 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:59:26,923 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:59:26,923 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:59:26,924 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:59:26,924 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:59:26,924 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:59:26,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:59:26,927 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:59:26,927 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:59:26,927 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:59:26,928 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:59:26,928 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:59:26,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:59:26,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:59:27,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:59:27,004 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:59:27,004 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:59:27,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 20:59:27,005 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-12 20:59:27,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:59:27,108 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:59:27,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:59:27,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:59:27,109 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:59:27,137 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,141 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,161 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,161 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,168 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,177 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,182 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 12.10 08:59:27" (1/1) ... [2018-10-12 20:59:27,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:59:27,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:59:27,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:59:27,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:59:27,192 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 12.10 08:59:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 20:59:27,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:59:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:59:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:59:27,830 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:59:27,831 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 12.10 08:59:27 BoogieIcfgContainer [2018-10-12 20:59:27,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:59:27,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:59:27,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:59:27,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:59:27,836 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 12.10 08:59:27" (1/2) ... [2018-10-12 20:59:27,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530e9856 and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:59:27, skipping insertion in model container [2018-10-12 20:59:27,837 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 12.10 08:59:27" (2/2) ... [2018-10-12 20:59:27,839 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 20:59:27,849 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:59:27,859 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:59:27,876 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:59:27,905 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:59:27,906 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:59:27,906 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:59:27,906 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:59:27,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:59:27,907 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:59:27,907 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:59:27,907 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:59:27,907 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:59:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-10-12 20:59:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-12 20:59:27,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:27,950 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] [2018-10-12 20:59:27,952 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:27,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1572747597, now seen corresponding path program 1 times [2018-10-12 20:59:28,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:28,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:59:28,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-12 20:59:28,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 20:59:28,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 20:59:28,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:59:28,823 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 12 states. [2018-10-12 20:59:29,542 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:59:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:29,999 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-12 20:59:30,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-12 20:59:30,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-10-12 20:59:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:30,014 INFO L225 Difference]: With dead ends: 92 [2018-10-12 20:59:30,014 INFO L226 Difference]: Without dead ends: 92 [2018-10-12 20:59:30,017 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 [2018-10-12 20:59:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-12 20:59:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2018-10-12 20:59:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-12 20:59:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-12 20:59:30,062 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 67 [2018-10-12 20:59:30,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:30,063 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-12 20:59:30,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 20:59:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-12 20:59:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-12 20:59:30,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:30,067 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] [2018-10-12 20:59:30,068 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:30,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 950296764, now seen corresponding path program 1 times [2018-10-12 20:59:30,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:30,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:30,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 20:59:30,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 20:59:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 20:59:30,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-12 20:59:30,809 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 22 states. [2018-10-12 20:59:32,821 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-12 20:59:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:33,188 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-12 20:59:33,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-12 20:59:33,190 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2018-10-12 20:59:33,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:33,192 INFO L225 Difference]: With dead ends: 105 [2018-10-12 20:59:33,192 INFO L226 Difference]: Without dead ends: 105 [2018-10-12 20:59:33,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 20:59:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-12 20:59:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2018-10-12 20:59:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-12 20:59:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-12 20:59:33,205 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 80 [2018-10-12 20:59:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:33,206 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-12 20:59:33,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 20:59:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-12 20:59:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-12 20:59:33,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:33,210 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] [2018-10-12 20:59:33,210 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:33,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:33,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2086667693, now seen corresponding path program 2 times [2018-10-12 20:59:33,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:33,898 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2018-10-12 20:59:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:34,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:34,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-12 20:59:34,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-12 20:59:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-12 20:59:34,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2018-10-12 20:59:34,894 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 32 states. [2018-10-12 20:59:36,969 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-12 20:59:37,230 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-12 20:59:37,511 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-12 20:59:37,701 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:59:38,076 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 20:59:38,310 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 20:59:38,512 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-12 20:59:38,744 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-12 20:59:39,087 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-12 20:59:39,386 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-10-12 20:59:39,624 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-12 20:59:39,851 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-12 20:59:40,074 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2018-10-12 20:59:40,299 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:59:41,053 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-12 20:59:41,274 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-12 20:59:41,479 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:59:41,701 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-12 20:59:42,096 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-12 20:59:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:42,142 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-12 20:59:42,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-12 20:59:42,146 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 93 [2018-10-12 20:59:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:42,152 INFO L225 Difference]: With dead ends: 118 [2018-10-12 20:59:42,152 INFO L226 Difference]: Without dead ends: 118 [2018-10-12 20:59:42,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=732, Invalid=3824, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 20:59:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-12 20:59:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2018-10-12 20:59:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-12 20:59:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-12 20:59:42,175 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 93 [2018-10-12 20:59:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:42,181 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-12 20:59:42,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-12 20:59:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-12 20:59:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-12 20:59:42,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:42,185 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] [2018-10-12 20:59:42,185 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:42,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:42,186 INFO L82 PathProgramCache]: Analyzing trace with hash 393850972, now seen corresponding path program 3 times [2018-10-12 20:59:42,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:44,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:44,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-12 20:59:44,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-12 20:59:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-12 20:59:44,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560 [2018-10-12 20:59:44,574 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 40 states. [2018-10-12 20:59:46,670 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-12 20:59:46,991 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 20:59:47,226 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-12 20:59:47,849 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 20:59:48,091 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-12 20:59:48,324 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-10-12 20:59:48,709 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-10-12 20:59:49,109 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-12 20:59:49,444 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-12 20:59:49,708 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-12 20:59:50,002 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2018-10-12 20:59:50,307 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-12 20:59:50,557 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-12 20:59:50,837 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-10-12 20:59:51,238 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2018-10-12 20:59:51,551 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2018-10-12 20:59:51,790 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-12 20:59:52,082 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-12 20:59:52,361 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-12 20:59:52,584 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-12 20:59:53,056 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-12 20:59:53,297 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-12 20:59:53,506 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-12 20:59:53,753 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2018-10-12 20:59:54,347 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 20:59:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:54,386 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-12 20:59:54,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-12 20:59:54,386 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 106 [2018-10-12 20:59:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:54,389 INFO L225 Difference]: With dead ends: 131 [2018-10-12 20:59:54,389 INFO L226 Difference]: Without dead ends: 131 [2018-10-12 20:59:54,391 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 [2018-10-12 20:59:54,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-12 20:59:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2018-10-12 20:59:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-12 20:59:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-12 20:59:54,400 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 106 [2018-10-12 20:59:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:54,400 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-12 20:59:54,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-12 20:59:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-12 20:59:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-12 20:59:54,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:54,403 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] [2018-10-12 20:59:54,403 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:54,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:54,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1149167091, now seen corresponding path program 4 times [2018-10-12 20:59:54,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:55,065 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:59:55,721 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-12 20:59:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:57,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:57,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-12 20:59:57,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-12 20:59:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-12 20:59:57,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1878, Unknown=0, NotChecked=0, Total=1980 [2018-10-12 20:59:57,790 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 45 states. [2018-10-12 21:00:00,061 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 21:00:00,296 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2018-10-12 21:00:00,491 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-12 21:00:01,022 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-12 21:00:01,594 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-12 21:00:01,940 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2018-10-12 21:00:02,666 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2018-10-12 21:00:03,566 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 141 [2018-10-12 21:00:04,051 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 144 [2018-10-12 21:00:04,453 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-10-12 21:00:04,899 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 133 [2018-10-12 21:00:05,303 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2018-10-12 21:00:05,656 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2018-10-12 21:00:06,140 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-12 21:00:06,664 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-12 21:00:07,101 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-12 21:00:07,485 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2018-10-12 21:00:07,965 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 131 [2018-10-12 21:00:08,427 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-12 21:00:08,773 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2018-10-12 21:00:09,133 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-12 21:00:10,100 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-12 21:00:10,622 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-12 21:00:10,947 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-12 21:00:11,310 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-12 21:00:11,654 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-12 21:00:11,955 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-12 21:00:12,486 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-12 21:00:12,826 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-12 21:00:13,142 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-12 21:00:13,535 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-10-12 21:00:14,041 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2018-10-12 21:00:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:00:14,097 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-12 21:00:14,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-12 21:00:14,098 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 119 [2018-10-12 21:00:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:00:14,099 INFO L225 Difference]: With dead ends: 144 [2018-10-12 21:00:14,100 INFO L226 Difference]: Without dead ends: 144 [2018-10-12 21:00:14,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=1220, Invalid=7710, Unknown=0, NotChecked=0, Total=8930 [2018-10-12 21:00:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-12 21:00:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2018-10-12 21:00:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-12 21:00:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-12 21:00:14,111 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 119 [2018-10-12 21:00:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:00:14,112 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-12 21:00:14,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-12 21:00:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-12 21:00:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-12 21:00:14,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:00:14,115 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] [2018-10-12 21:00:14,115 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:00:14,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:00:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1021622268, now seen corresponding path program 5 times [2018-10-12 21:00:14,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:00:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:00:17,631 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-10-12 21:00:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:00:19,402 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:00:19,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-12 21:00:19,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-12 21:00:19,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-12 21:00:19,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2018-10-12 21:00:19,404 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 52 states. [2018-10-12 21:00:21,313 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-10-12 21:00:21,654 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 21:00:21,946 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-12 21:00:22,661 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 21:00:22,937 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 21:00:23,254 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-12 21:00:23,682 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:00:24,213 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-12 21:00:24,620 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:00:25,084 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2018-10-12 21:00:25,652 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2018-10-12 21:00:25,967 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 21:00:26,216 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 21:00:26,510 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-12 21:00:26,932 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:00:27,230 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 21:00:27,665 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2018-10-12 21:00:28,172 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2018-10-12 21:00:28,721 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-10-12 21:00:29,158 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2018-10-12 21:00:29,654 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-12 21:00:30,285 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2018-10-12 21:00:30,817 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2018-10-12 21:00:31,241 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-12 21:00:31,705 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-12 21:00:32,188 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2018-10-12 21:00:32,618 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-12 21:00:33,090 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-12 21:00:33,647 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-12 21:00:34,182 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2018-10-12 21:00:34,622 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-12 21:00:35,104 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2018-10-12 21:00:35,520 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-12 21:00:35,901 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-12 21:00:36,326 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-12 21:00:36,790 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-12 21:00:37,058 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 21:00:37,300 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 21:00:37,575 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-12 21:00:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:00:37,615 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-12 21:00:37,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-12 21:00:37,616 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 132 [2018-10-12 21:00:37,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:00:37,617 INFO L225 Difference]: With dead ends: 157 [2018-10-12 21:00:37,618 INFO L226 Difference]: Without dead ends: 157 [2018-10-12 21:00:37,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=1683, Invalid=10089, Unknown=0, NotChecked=0, Total=11772 [2018-10-12 21:00:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-12 21:00:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2018-10-12 21:00:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-12 21:00:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-12 21:00:37,629 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 132 [2018-10-12 21:00:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:00:37,630 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-12 21:00:37,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-12 21:00:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-12 21:00:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-12 21:00:37,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:00:37,632 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] [2018-10-12 21:00:37,633 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:00:37,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:00:37,633 INFO L82 PathProgramCache]: Analyzing trace with hash 924284525, now seen corresponding path program 6 times [2018-10-12 21:00:37,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:00:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:00:39,314 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-10-12 21:00:40,037 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-12 21:00:40,214 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-12 21:00:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:00:42,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:00:42,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-12 21:00:42,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-12 21:00:42,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-12 21:00:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:00:42,598 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 57 states. [2018-10-12 21:00:45,151 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-12 21:00:45,492 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-12 21:00:46,282 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-12 21:00:46,618 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 21:00:46,966 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:00:47,396 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 21:00:48,070 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-12 21:00:48,573 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 21:00:49,306 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2018-10-12 21:00:50,065 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2018-10-12 21:00:50,504 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 21:00:50,833 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:00:51,474 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-12 21:00:52,374 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2018-10-12 21:00:53,088 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2018-10-12 21:00:53,649 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 168 [2018-10-12 21:00:54,318 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2018-10-12 21:00:54,998 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2018-10-12 21:00:55,527 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-12 21:00:56,249 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2018-10-12 21:00:57,141 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 187 [2018-10-12 21:00:57,945 WARN L178 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2018-10-12 21:00:58,511 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-12 21:00:59,170 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2018-10-12 21:00:59,905 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 183 [2018-10-12 21:01:00,420 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2018-10-12 21:01:01,081 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 172 [2018-10-12 21:01:01,728 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 175 [2018-10-12 21:01:02,392 WARN L178 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 178 [2018-10-12 21:01:02,952 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-12 21:01:03,564 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 177 [2018-10-12 21:01:04,148 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-12 21:01:04,731 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-12 21:01:05,334 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 165 [2018-10-12 21:01:05,923 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 168 [2018-10-12 21:01:06,543 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2018-10-12 21:01:07,067 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-12 21:01:07,621 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2018-10-12 21:01:08,148 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2018-10-12 21:01:08,648 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-12 21:01:09,240 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2018-10-12 21:01:09,580 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 21:01:10,001 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-12 21:01:10,343 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-12 21:01:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:01:10,392 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-12 21:01:10,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-12 21:01:10,393 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 145 [2018-10-12 21:01:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:01:10,394 INFO L225 Difference]: With dead ends: 170 [2018-10-12 21:01:10,394 INFO L226 Difference]: Without dead ends: 170 [2018-10-12 21:01:10,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=2001, Invalid=12279, Unknown=0, NotChecked=0, Total=14280 [2018-10-12 21:01:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-12 21:01:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2018-10-12 21:01:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-12 21:01:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-12 21:01:10,408 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 145 [2018-10-12 21:01:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:01:10,408 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-12 21:01:10,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-12 21:01:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-12 21:01:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-12 21:01:10,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:01:10,411 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] [2018-10-12 21:01:10,411 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:01:10,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:01:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash 749696924, now seen corresponding path program 7 times [2018-10-12 21:01:10,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:01:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:01:11,520 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-12 21:01:11,773 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-12 21:01:12,034 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-12 21:01:12,288 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-12 21:01:12,543 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:01:12,747 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:01:12,995 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:01:13,265 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-10-12 21:01:13,567 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:01:13,817 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:01:14,060 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-12 21:01:14,308 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-12 21:01:14,601 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-12 21:01:15,014 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-12 21:01:15,312 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-12 21:01:15,597 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-12 21:01:15,866 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-12 21:01:16,124 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-12 21:01:16,413 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-12 21:01:16,601 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-12 21:01:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:01:19,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:01:19,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-12 21:01:19,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-12 21:01:19,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-12 21:01:19,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3635, Unknown=0, NotChecked=0, Total=3782 [2018-10-12 21:01:19,736 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 62 states. [2018-10-12 21:01:22,459 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-10-12 21:01:22,834 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-10-12 21:01:23,075 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 21:01:23,788 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-12 21:01:24,180 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 21:01:24,615 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:01:25,209 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-12 21:01:26,012 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 21:01:26,594 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-12 21:01:27,326 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 187 [2018-10-12 21:01:28,211 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 216 [2018-10-12 21:01:28,720 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-12 21:01:29,114 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-12 21:01:29,886 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2018-10-12 21:01:30,977 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2018-10-12 21:01:31,803 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2018-10-12 21:01:32,538 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 193 [2018-10-12 21:01:33,410 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 226 [2018-10-12 21:01:33,927 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-12 21:01:34,327 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 21:01:34,809 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 21:01:35,625 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-12 21:01:36,151 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 21:01:36,570 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 21:01:37,050 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 21:01:37,537 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-12 21:01:37,913 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:01:38,653 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 198 [2018-10-12 21:01:39,630 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2018-10-12 21:01:40,502 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2018-10-12 21:01:40,927 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-12 21:01:41,387 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-12 21:01:41,827 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 21:01:42,172 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-12 21:01:42,585 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:01:43,201 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-12 21:01:43,629 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 21:01:44,003 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 21:01:44,426 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:01:44,827 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:01:45,173 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-12 21:01:45,903 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-12 21:01:46,757 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-12 21:01:47,188 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:01:47,568 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:01:47,970 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-12 21:01:48,391 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-12 21:01:48,738 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:01:49,477 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:01:49,870 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:01:50,208 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:01:50,612 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 21:01:51,358 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 21:01:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:01:51,455 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-12 21:01:51,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-12 21:01:51,457 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 158 [2018-10-12 21:01:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:01:51,458 INFO L225 Difference]: With dead ends: 183 [2018-10-12 21:01:51,458 INFO L226 Difference]: Without dead ends: 183 [2018-10-12 21:01:51,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2847 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=1846, Invalid=15710, Unknown=0, NotChecked=0, Total=17556 [2018-10-12 21:01:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-12 21:01:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2018-10-12 21:01:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-12 21:01:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-12 21:01:51,466 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 158 [2018-10-12 21:01:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:01:51,467 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-12 21:01:51,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-12 21:01:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-12 21:01:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-12 21:01:51,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:01:51,470 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] [2018-10-12 21:01:51,470 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:01:51,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:01:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1670978253, now seen corresponding path program 8 times [2018-10-12 21:01:51,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:01:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:01:52,753 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-12 21:01:53,121 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-12 21:01:53,478 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-12 21:01:53,840 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-12 21:01:54,182 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:01:54,466 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:01:54,811 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:01:55,230 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-12 21:01:55,683 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:01:56,109 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:01:56,449 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-12 21:01:56,821 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-12 21:01:57,221 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-12 21:01:57,661 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-12 21:01:58,054 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-12 21:01:58,458 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-12 21:01:58,883 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-12 21:01:59,212 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-12 21:01:59,630 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:01:59,956 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-12 21:02:00,253 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-12 21:02:00,556 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-12 21:02:00,882 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:02:01,190 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:02:01,488 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-12 21:02:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:02:05,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:02:05,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-12 21:02:05,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-12 21:02:05,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-12 21:02:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 21:02:05,096 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 68 states. [2018-10-12 21:02:08,222 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-12 21:02:08,679 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-12 21:02:08,977 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-12 21:02:09,809 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-12 21:02:10,284 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-12 21:02:10,805 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 21:02:11,505 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2018-10-12 21:02:12,477 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-12 21:02:13,211 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2018-10-12 21:02:14,089 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 211 [2018-10-12 21:02:15,137 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 245 [2018-10-12 21:02:15,742 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-12 21:02:16,248 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:02:17,220 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 226 [2018-10-12 21:02:18,423 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2018-10-12 21:02:19,417 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 232 [2018-10-12 21:02:20,291 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 218 [2018-10-12 21:02:21,386 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 257 [2018-10-12 21:02:22,018 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-12 21:02:22,491 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-12 21:02:23,476 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2018-10-12 21:02:24,311 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-12 21:02:24,924 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-10-12 21:02:25,431 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-12 21:02:26,031 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-12 21:02:26,692 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-12 21:02:27,158 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 21:02:27,715 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-12 21:02:28,552 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-10-12 21:02:29,165 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-12 21:02:29,657 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-12 21:02:30,221 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-12 21:02:30,784 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-12 21:02:31,233 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 21:02:32,165 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2018-10-12 21:02:32,978 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:02:33,554 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-12 21:02:34,037 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-12 21:02:34,585 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 21:02:35,128 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-12 21:02:35,557 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 21:02:36,045 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 21:02:36,851 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-12 21:02:37,400 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 21:02:37,861 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 21:02:38,363 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 21:02:38,860 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-12 21:02:39,264 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-12 21:02:40,005 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2018-10-12 21:02:40,744 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 21:02:41,259 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-12 21:02:41,723 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:02:42,262 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-12 21:02:42,739 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-12 21:02:43,156 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 21:02:44,039 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:02:44,504 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:02:44,903 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 21:02:45,360 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 21:02:46,234 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:02:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:02:46,350 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-12 21:02:46,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-12 21:02:46,350 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 171 [2018-10-12 21:02:46,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:02:46,352 INFO L225 Difference]: With dead ends: 196 [2018-10-12 21:02:46,352 INFO L226 Difference]: Without dead ends: 196 [2018-10-12 21:02:46,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=2069, Invalid=19101, Unknown=0, NotChecked=0, Total=21170 [2018-10-12 21:02:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-12 21:02:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2018-10-12 21:02:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-12 21:02:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-12 21:02:46,358 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 171 [2018-10-12 21:02:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:02:46,358 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-12 21:02:46,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-12 21:02:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-12 21:02:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-12 21:02:46,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:02:46,361 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] [2018-10-12 21:02:46,362 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:02:46,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:02:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash -500961476, now seen corresponding path program 9 times [2018-10-12 21:02:46,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:02:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:02:47,233 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 21:02:48,138 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-12 21:02:48,661 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-12 21:02:49,141 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2018-10-12 21:02:49,619 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2018-10-12 21:02:50,072 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-12 21:02:50,532 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-12 21:02:51,010 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-12 21:02:51,577 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2018-10-12 21:02:52,201 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-12 21:02:52,700 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-12 21:02:53,166 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-12 21:02:53,614 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-12 21:02:54,135 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-12 21:02:54,648 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2018-10-12 21:02:55,140 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-12 21:02:55,624 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-12 21:02:56,110 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-12 21:02:56,539 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-12 21:02:57,035 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-12 21:02:57,501 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-12 21:02:57,871 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-12 21:02:58,243 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-12 21:02:58,607 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:02:58,927 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-12 21:02:59,296 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-12 21:02:59,544 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-12 21:02:59,798 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:03:00,048 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:03:00,292 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:03:00,530 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:03:00,797 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-12 21:03:00,992 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-12 21:03:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:03:04,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:03:04,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-12 21:03:04,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-12 21:03:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-12 21:03:04,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-12 21:03:04,412 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 76 states. [2018-10-12 21:03:07,731 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-12 21:03:08,219 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2018-10-12 21:03:08,551 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-12 21:03:09,506 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-12 21:03:10,059 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-12 21:03:10,669 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-12 21:03:11,377 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2018-10-12 21:03:12,481 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2018-10-12 21:03:13,337 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2018-10-12 21:03:14,327 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 235 [2018-10-12 21:03:15,496 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 274 [2018-10-12 21:03:16,221 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-12 21:03:16,770 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-12 21:03:17,423 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-12 21:03:18,412 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-12 21:03:19,085 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2018-10-12 21:03:19,581 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-12 21:03:20,157 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-12 21:03:20,835 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2018-10-12 21:03:21,386 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-12 21:03:22,528 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 254 [2018-10-12 21:03:23,806 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 255 [2018-10-12 21:03:25,177 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 258 DAG size of output: 258 [2018-10-12 21:03:26,486 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2018-10-12 21:03:27,344 WARN L178 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 236 [2018-10-12 21:03:28,394 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 275 [2018-10-12 21:03:29,450 WARN L178 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 272 [2018-10-12 21:03:30,337 WARN L178 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-12 21:03:31,442 WARN L178 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 255 [2018-10-12 21:03:32,872 WARN L178 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-12 21:03:34,169 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-12 21:03:35,048 WARN L178 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-12 21:03:36,082 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 269 [2018-10-12 21:03:37,185 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 268 [2018-10-12 21:03:38,155 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 235 [2018-10-12 21:03:39,313 WARN L178 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-12 21:03:40,431 WARN L178 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2018-10-12 21:03:41,560 WARN L178 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 251 [2018-10-12 21:03:42,429 WARN L178 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-12 21:03:43,464 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-12 21:03:44,488 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2018-10-12 21:03:45,395 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 229 [2018-10-12 21:03:46,409 WARN L178 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-12 21:03:47,435 WARN L178 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 241 [2018-10-12 21:03:48,543 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 244 [2018-10-12 21:03:49,424 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-12 21:03:50,412 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2018-10-12 21:03:51,396 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 244 [2018-10-12 21:03:52,265 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2018-10-12 21:03:53,185 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-12 21:03:54,231 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2018-10-12 21:03:55,199 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-12 21:03:56,068 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 216 [2018-10-12 21:03:56,994 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2018-10-12 21:03:57,933 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-12 21:03:58,841 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-12 21:03:59,790 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-12 21:04:00,752 WARN L178 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 222 [2018-10-12 21:04:01,721 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 225 [2018-10-12 21:04:02,566 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-12 21:04:03,471 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 215 [2018-10-12 21:04:04,447 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 215 [2018-10-12 21:04:05,304 WARN L178 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 208 [2018-10-12 21:04:06,145 WARN L178 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 208 [2018-10-12 21:04:07,073 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2018-10-12 21:04:07,631 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-12 21:04:08,162 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 21:04:08,750 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 21:04:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:04:08,851 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-12 21:04:08,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-12 21:04:08,851 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 184 [2018-10-12 21:04:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:04:08,853 INFO L225 Difference]: With dead ends: 209 [2018-10-12 21:04:08,853 INFO L226 Difference]: Without dead ends: 209 [2018-10-12 21:04:08,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 76.0s TimeCoverageRelationStatistics Valid=3613, Invalid=22469, Unknown=0, NotChecked=0, Total=26082 [2018-10-12 21:04:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-12 21:04:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-12 21:04:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-12 21:04:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-12 21:04:08,859 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 184 [2018-10-12 21:04:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:04:08,860 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-12 21:04:08,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-12 21:04:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-12 21:04:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-12 21:04:08,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:04:08,862 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] [2018-10-12 21:04:08,862 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:04:08,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:04:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1845233453, now seen corresponding path program 10 times [2018-10-12 21:04:08,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:04:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:04:10,392 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-12 21:04:11,006 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-12 21:04:11,647 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2018-10-12 21:04:12,309 WARN L178 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2018-10-12 21:04:12,939 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:04:13,535 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:04:14,255 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:04:15,036 WARN L178 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2018-10-12 21:04:15,736 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:04:16,350 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:04:16,950 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-12 21:04:17,558 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-12 21:04:18,246 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-12 21:04:18,959 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2018-10-12 21:04:19,680 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-12 21:04:20,336 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-12 21:04:20,986 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-12 21:04:21,567 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-12 21:04:22,222 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:04:22,727 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-12 21:04:23,229 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-12 21:04:23,739 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-12 21:04:24,284 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-12 21:04:24,787 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-12 21:04:25,282 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-12 21:04:25,670 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-12 21:04:26,054 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-12 21:04:26,428 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-12 21:04:26,798 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-12 21:04:27,173 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-12 21:04:27,536 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-12 21:04:27,811 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-12 21:04:28,078 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:04:28,330 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:04:28,599 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:04:28,856 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:04:29,139 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-12 21:04:29,413 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-12 21:04:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:04:33,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:04:33,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-12 21:04:33,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-12 21:04:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-12 21:04:33,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2018-10-12 21:04:33,028 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 81 states. [2018-10-12 21:04:36,816 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-12 21:04:37,436 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2018-10-12 21:04:37,829 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 21:04:38,947 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 21:04:39,666 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-12 21:04:40,389 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-12 21:04:41,277 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2018-10-12 21:04:42,577 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-10-12 21:04:43,546 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2018-10-12 21:04:44,788 WARN L178 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 259 [2018-10-12 21:04:46,191 WARN L178 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 303 [2018-10-12 21:04:47,050 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2018-10-12 21:04:47,712 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-10-12 21:04:48,979 WARN L178 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 275 [2018-10-12 21:04:50,646 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 285 DAG size of output: 278 [2018-10-12 21:04:52,000 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 289 DAG size of output: 281 [2018-10-12 21:04:53,062 WARN L178 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 268 [2018-10-12 21:04:54,277 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 336 DAG size of output: 315 [2018-10-12 21:04:55,614 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 321 DAG size of output: 311 [2018-10-12 21:04:56,634 WARN L178 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-12 21:04:57,957 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 294 DAG size of output: 288 [2018-10-12 21:04:59,585 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 298 DAG size of output: 291 [2018-10-12 21:05:01,112 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 302 DAG size of output: 294 [2018-10-12 21:05:02,163 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 272 [2018-10-12 21:05:03,388 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 326 DAG size of output: 313 [2018-10-12 21:05:04,723 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 317 DAG size of output: 307 [2018-10-12 21:05:05,874 WARN L178 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2018-10-12 21:05:07,234 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 289 DAG size of output: 282 [2018-10-12 21:05:08,608 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 293 DAG size of output: 286 [2018-10-12 21:05:10,013 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 297 DAG size of output: 289 [2018-10-12 21:05:11,111 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 262 [2018-10-12 21:05:12,302 WARN L178 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 297 [2018-10-12 21:05:13,538 WARN L178 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 295 [2018-10-12 21:05:14,580 WARN L178 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2018-10-12 21:05:15,858 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 279 DAG size of output: 272 [2018-10-12 21:05:17,195 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 283 DAG size of output: 276 [2018-10-12 21:05:18,555 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 287 DAG size of output: 279 [2018-10-12 21:05:19,570 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 256 [2018-10-12 21:05:20,766 WARN L178 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-12 21:05:21,985 WARN L178 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 283 [2018-10-12 21:05:23,035 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 254 [2018-10-12 21:05:24,220 WARN L178 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 266 [2018-10-12 21:05:25,501 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 276 DAG size of output: 269 [2018-10-12 21:05:26,828 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 280 DAG size of output: 272 [2018-10-12 21:05:27,843 WARN L178 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-12 21:05:28,977 WARN L178 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 273 [2018-10-12 21:05:30,157 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 271 [2018-10-12 21:05:31,269 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 248 [2018-10-12 21:05:32,435 WARN L178 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 256 [2018-10-12 21:05:33,678 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 260 [2018-10-12 21:05:34,904 WARN L178 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 263 [2018-10-12 21:05:35,963 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2018-10-12 21:05:37,082 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 265 [2018-10-12 21:05:38,237 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 259 [2018-10-12 21:05:39,242 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 237 [2018-10-12 21:05:40,343 WARN L178 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 248 [2018-10-12 21:05:41,546 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 251 [2018-10-12 21:05:42,705 WARN L178 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 254 [2018-10-12 21:05:43,712 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 240 [2018-10-12 21:05:44,812 WARN L178 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 253 [2018-10-12 21:05:45,900 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2018-10-12 21:05:47,000 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2018-10-12 21:05:48,069 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 241 [2018-10-12 21:05:49,180 WARN L178 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 244 [2018-10-12 21:05:50,261 WARN L178 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 247 [2018-10-12 21:05:51,282 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 233 [2018-10-12 21:05:52,349 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 239 [2018-10-12 21:05:53,408 WARN L178 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 234 [2018-10-12 21:05:54,390 WARN L178 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-12 21:05:55,525 WARN L178 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-12 21:05:56,200 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-12 21:05:56,887 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-12 21:05:57,535 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-12 21:05:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:05:57,622 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-12 21:05:57,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-12 21:05:57,622 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 197 [2018-10-12 21:05:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:05:57,624 INFO L225 Difference]: With dead ends: 222 [2018-10-12 21:05:57,624 INFO L226 Difference]: Without dead ends: 222 [2018-10-12 21:05:57,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6186 ImplicationChecksByTransitivity, 102.0s TimeCoverageRelationStatistics Valid=4203, Invalid=25209, Unknown=0, NotChecked=0, Total=29412 [2018-10-12 21:05:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-12 21:05:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2018-10-12 21:05:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-12 21:05:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-12 21:05:57,629 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 197 [2018-10-12 21:05:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:05:57,630 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-12 21:05:57,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-12 21:05:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-12 21:05:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-12 21:05:57,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:05:57,632 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] [2018-10-12 21:05:57,633 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:05:57,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:05:57,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1879842524, now seen corresponding path program 11 times [2018-10-12 21:05:57,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:05:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:00,344 WARN L178 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-12 21:06:01,148 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-12 21:06:02,046 WARN L178 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2018-10-12 21:06:02,895 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 71 [2018-10-12 21:06:03,725 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-12 21:06:04,501 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-12 21:06:05,328 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-12 21:06:06,378 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 74 [2018-10-12 21:06:07,407 WARN L178 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-12 21:06:08,320 WARN L178 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-12 21:06:09,220 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2018-10-12 21:06:10,038 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2018-10-12 21:06:10,920 WARN L178 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2018-10-12 21:06:11,887 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 78 [2018-10-12 21:06:12,746 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-12 21:06:13,605 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-12 21:06:14,465 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-12 21:06:15,230 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-12 21:06:16,114 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-12 21:06:16,843 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-12 21:06:17,548 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-12 21:06:18,244 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-12 21:06:18,922 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-12 21:06:19,502 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-12 21:06:20,184 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-12 21:06:20,690 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-12 21:06:21,187 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-12 21:06:21,696 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-12 21:06:22,292 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-12 21:06:22,783 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-12 21:06:23,298 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-12 21:06:23,699 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-12 21:06:24,091 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-12 21:06:24,481 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-12 21:06:24,875 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-12 21:06:25,272 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-12 21:06:25,672 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-12 21:06:25,957 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-12 21:06:26,233 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:06:26,502 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-12 21:06:26,778 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:06:27,077 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-12 21:06:27,426 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-12 21:06:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:06:31,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:06:31,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-12 21:06:31,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-12 21:06:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-12 21:06:31,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=7052, Unknown=0, NotChecked=0, Total=7482 [2018-10-12 21:06:31,653 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 87 states. [2018-10-12 21:06:34,034 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-12 21:06:36,280 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-10-12 21:06:36,935 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2018-10-12 21:06:37,338 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-10-12 21:06:38,377 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 21:06:39,088 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-12 21:06:39,891 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-12 21:06:40,871 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2018-10-12 21:06:42,182 WARN L178 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2018-10-12 21:06:43,331 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2018-10-12 21:06:44,637 WARN L178 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 288 [2018-10-12 21:06:46,199 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 384 DAG size of output: 337 [2018-10-12 21:06:47,138 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2018-10-12 21:06:47,999 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2018-10-12 21:06:49,402 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 309 DAG size of output: 300 [2018-10-12 21:06:51,057 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 314 DAG size of output: 303 [2018-10-12 21:06:52,587 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 319 DAG size of output: 306 [2018-10-12 21:06:54,311 WARN L178 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 306 DAG size of output: 289 [2018-10-12 21:06:56,328 WARN L178 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 365 DAG size of output: 342 [2018-10-12 21:06:57,854 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 350 DAG size of output: 342 [2018-10-12 21:06:59,063 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 289 [2018-10-12 21:07:00,573 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 317 DAG size of output: 308 [2018-10-12 21:07:02,381 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 322 DAG size of output: 311 [2018-10-12 21:07:04,168 WARN L178 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 327 DAG size of output: 314 [2018-10-12 21:07:05,327 WARN L178 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 291 [2018-10-12 21:07:06,656 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 353 DAG size of output: 334 [2018-10-12 21:07:08,117 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 344 DAG size of output: 330 [2018-10-12 21:07:09,336 WARN L178 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 283 [2018-10-12 21:07:10,854 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 320 DAG size of output: 308 [2018-10-12 21:07:12,682 WARN L178 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 325 DAG size of output: 312 [2018-10-12 21:07:14,541 WARN L178 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 330 DAG size of output: 315 [2018-10-12 21:07:15,734 WARN L178 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 291 [2018-10-12 21:07:17,173 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 347 DAG size of output: 329 [2018-10-12 21:07:18,762 WARN L178 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 338 DAG size of output: 323 [2018-10-12 21:07:19,994 WARN L178 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 285 [2018-10-12 21:07:21,536 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 310 DAG size of output: 298 [2018-10-12 21:07:23,131 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 315 DAG size of output: 302 [2018-10-12 21:07:24,824 WARN L178 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 320 DAG size of output: 305 [2018-10-12 21:07:25,993 WARN L178 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 278 [2018-10-12 21:07:27,397 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 335 DAG size of output: 310 [2018-10-12 21:07:28,869 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 326 DAG size of output: 311 [2018-10-12 21:07:30,073 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 279 [2018-10-12 21:07:31,489 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 303 DAG size of output: 291 [2018-10-12 21:07:32,970 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 308 DAG size of output: 295 [2018-10-12 21:07:34,583 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 313 DAG size of output: 298 [2018-10-12 21:07:35,780 WARN L178 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 272 [2018-10-12 21:07:37,163 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 323 DAG size of output: 298 [2018-10-12 21:07:38,559 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 314 DAG size of output: 299 [2018-10-12 21:07:39,814 WARN L178 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 273 [2018-10-12 21:07:41,229 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 294 DAG size of output: 283 [2018-10-12 21:07:42,708 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 299 DAG size of output: 286 [2018-10-12 21:07:44,282 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 304 DAG size of output: 289 [2018-10-12 21:07:45,447 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 273 [2018-10-12 21:07:46,784 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 313 DAG size of output: 296 [2018-10-12 21:07:48,220 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 304 DAG size of output: 290 [2018-10-12 21:07:49,508 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 267 [2018-10-12 21:07:50,830 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 292 DAG size of output: 281 [2018-10-12 21:07:52,252 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 297 DAG size of output: 284 [2018-10-12 21:07:53,683 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 302 DAG size of output: 287 [2018-10-12 21:07:54,935 WARN L178 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 267 [2018-10-12 21:07:56,256 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 299 DAG size of output: 287 [2018-10-12 21:07:57,542 WARN L178 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 281 [2018-10-12 21:07:58,743 WARN L178 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 261 [2018-10-12 21:08:00,085 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-12 21:08:01,384 WARN L178 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 270 [2018-10-12 21:08:02,699 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 284 DAG size of output: 273 [2018-10-12 21:08:03,852 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 259 [2018-10-12 21:08:05,193 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 272 [2018-10-12 21:08:06,435 WARN L178 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 266 [2018-10-12 21:08:07,571 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 253 [2018-10-12 21:08:08,759 WARN L178 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-12 21:08:10,056 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 260 [2018-10-12 21:08:11,277 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 263 [2018-10-12 21:08:12,381 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 247 [2018-10-12 21:08:13,586 WARN L178 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 253 [2018-10-12 21:08:14,850 WARN L178 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 253 [2018-10-12 21:08:15,985 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2018-10-12 21:08:17,214 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 253 [2018-10-12 21:08:17,965 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-12 21:08:18,708 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-12 21:08:19,489 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-12 21:08:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:19,542 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-12 21:08:19,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-12 21:08:19,543 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 210 [2018-10-12 21:08:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:19,544 INFO L225 Difference]: With dead ends: 235 [2018-10-12 21:08:19,544 INFO L226 Difference]: Without dead ends: 235 [2018-10-12 21:08:19,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 135.4s TimeCoverageRelationStatistics Valid=4610, Invalid=29430, Unknown=0, NotChecked=0, Total=34040 [2018-10-12 21:08:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-12 21:08:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 224. [2018-10-12 21:08:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-12 21:08:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-12 21:08:19,550 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 210 [2018-10-12 21:08:19,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:19,551 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-12 21:08:19,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-12 21:08:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-12 21:08:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-12 21:08:19,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:19,553 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] [2018-10-12 21:08:19,553 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:19,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:19,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1682556019, now seen corresponding path program 12 times [2018-10-12 21:08:19,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:22,767 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 160 DAG size of output: 80 [2018-10-12 21:08:23,843 WARN L178 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 80 [2018-10-12 21:08:24,971 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 160 DAG size of output: 80