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/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 16:41:29,885 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 16:41:29,887 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 16:41:29,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 16:41:29,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 16:41:29,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 16:41:29,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 16:41:29,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 16:41:29,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 16:41:29,910 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 16:41:29,911 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 16:41:29,911 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 16:41:29,912 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 16:41:29,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 16:41:29,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 16:41:29,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 16:41:29,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 16:41:29,918 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 16:41:29,920 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 16:41:29,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 16:41:29,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 16:41:29,924 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 16:41:29,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 16:41:29,935 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 16:41:29,945 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 16:41:29,945 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 16:41:29,946 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 16:41:29,946 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 16:41:29,947 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 16:41:29,947 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 16:41:29,948 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 16:41:29,948 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 16:41:29,948 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 16:41:29,948 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 16:41:29,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 16:41:29,949 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 16:41:29,949 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 16:41:29,950 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 16:41:29,950 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 16:41:30,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 16:41:30,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 16:41:30,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 16:41:30,038 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 16:41:30,038 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 16:41:30,039 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-10 16:41:30,039 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl' [2018-10-10 16:41:30,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 16:41:30,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-10 16:41:30,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 16:41:30,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 16:41:30,122 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 16:41:30,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 16:41:30,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 16:41:30,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 16:41:30,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 16:41:30,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 16:41:30,252 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 16:41:30,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 16:41:30,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 16:41:30,957 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 16:41:30,958 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 04:41:30 BoogieIcfgContainer [2018-10-10 16:41:30,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 16:41:30,959 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-10 16:41:30,959 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-10 16:41:30,962 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-10 16:41:30,965 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 04:41:30" (1/1) ... [2018-10-10 16:41:30,971 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-10 16:41:30,972 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-10 16:41:31,010 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-10 16:41:31,055 INFO L217 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-10 16:41:31,070 INFO L280 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-10 16:41:31,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-10 16:41:56,503 INFO L315 AbstractInterpreter]: Visited 82 different actions 99 times. Merged at 15 different actions 16 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-10-10 16:41:56,505 INFO L304 apSepIcfgTransformer]: finished equality analysis [2018-10-10 16:41:56,509 INFO L316 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-10 16:41:56,618 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select |v_#locv_ULTIMATE.start_write~int_old_#memory_int_4_1_1| |v_ULTIMATE.start_write~int_#ptr.base_12|) at (assume write~int_old_#memory_int[write~int_#ptr.base := write~int_old_#memory_int[write~int_#ptr.base][write~int_#ptr.offset := write~int_#value]] == #memory_int;) [2018-10-10 16:41:56,692 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select (select |#loc_#memory_int_(Array-Int-(Array-Int-#locsort2))| |v_ULTIMATE.start_read~int_#ptr.base_7|) |v_ULTIMATE.start_read~int_#ptr.offset_5|) at (assume #memory_int[read~int_#ptr.base][read~int_#ptr.offset] == read~int_#value;) [2018-10-10 16:41:56,694 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-10 16:41:56,694 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-10 16:41:56,695 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-10 16:41:56,695 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-10 16:41:56,695 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-10 16:41:56,695 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-10 16:41:56,695 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-10 16:41:56,695 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-10 16:41:56,696 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-10 16:41:56,696 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-10 16:41:56,696 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-10 16:41:56,696 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-10 16:41:56,696 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-10 16:41:56,696 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-10 16:41:56,696 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-10 16:41:56,698 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-10 16:41:56,720 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.10 04:41:56 BasicIcfg [2018-10-10 16:41:56,721 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-10 16:41:56,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 16:41:56,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 16:41:56,727 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 16:41:56,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:41:30" (1/3) ... [2018-10-10 16:41:56,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fef8ab and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 04:41:56, skipping insertion in model container [2018-10-10 16:41:56,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 04:41:30" (2/3) ... [2018-10-10 16:41:56,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fef8ab and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 04:41:56, skipping insertion in model container [2018-10-10 16:41:56,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.10 04:41:56" (3/3) ... [2018-10-10 16:41:56,730 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-10 16:41:56,740 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 16:41:56,749 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 16:41:56,765 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 16:41:56,791 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 16:41:56,792 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 16:41:56,792 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 16:41:56,792 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 16:41:56,792 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 16:41:56,793 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 16:41:56,793 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 16:41:56,793 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 16:41:56,793 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 16:41:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-10-10 16:41:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 16:41:56,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:41:56,813 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:41:56,814 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:41:56,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:41:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1586642623, now seen corresponding path program 1 times [2018-10-10 16:41:56,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:41:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:41:57,376 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-10 16:41:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:41:58,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 16:41:58,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 16:41:58,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 16:41:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 16:41:58,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-10 16:41:58,113 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 12 states. [2018-10-10 16:41:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:41:59,286 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-10 16:41:59,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 16:41:59,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-10-10 16:41:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:41:59,299 INFO L225 Difference]: With dead ends: 94 [2018-10-10 16:41:59,299 INFO L226 Difference]: Without dead ends: 94 [2018-10-10 16:41:59,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-10 16:41:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-10 16:41:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2018-10-10 16:41:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-10 16:41:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-10 16:41:59,343 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 69 [2018-10-10 16:41:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:41:59,344 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-10 16:41:59,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 16:41:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-10 16:41:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-10 16:41:59,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:41:59,347 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:41:59,348 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:41:59,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:41:59,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1407558253, now seen corresponding path program 1 times [2018-10-10 16:41:59,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:41:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:00,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:00,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 16:42:00,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 16:42:00,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 16:42:00,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-10 16:42:00,005 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-10 16:42:01,615 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-10 16:42:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:42:02,081 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-10 16:42:02,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 16:42:02,082 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-10 16:42:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:42:02,084 INFO L225 Difference]: With dead ends: 107 [2018-10-10 16:42:02,084 INFO L226 Difference]: Without dead ends: 107 [2018-10-10 16:42:02,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 16:42:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-10 16:42:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2018-10-10 16:42:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-10 16:42:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-10 16:42:02,095 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 82 [2018-10-10 16:42:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:42:02,096 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-10 16:42:02,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 16:42:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-10 16:42:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-10 16:42:02,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:42:02,099 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:42:02,100 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:42:02,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:42:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash 657074559, now seen corresponding path program 2 times [2018-10-10 16:42:02,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:42:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:02,625 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-10-10 16:42:02,870 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-10 16:42:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:03,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:03,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-10 16:42:03,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-10 16:42:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-10 16:42:03,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2018-10-10 16:42:03,325 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 27 states. [2018-10-10 16:42:04,884 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-10 16:42:06,075 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-10 16:42:06,280 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-10 16:42:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:42:08,072 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-10 16:42:08,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-10 16:42:08,072 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 95 [2018-10-10 16:42:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:42:08,075 INFO L225 Difference]: With dead ends: 120 [2018-10-10 16:42:08,075 INFO L226 Difference]: Without dead ends: 120 [2018-10-10 16:42:08,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2018-10-10 16:42:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-10 16:42:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2018-10-10 16:42:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-10 16:42:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-10 16:42:08,086 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 95 [2018-10-10 16:42:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:42:08,087 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-10 16:42:08,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-10 16:42:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-10 16:42:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-10 16:42:08,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:42:08,089 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:42:08,089 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:42:08,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:42:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1722732627, now seen corresponding path program 3 times [2018-10-10 16:42:08,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:42:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:09,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:09,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-10 16:42:09,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-10 16:42:09,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-10 16:42:09,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2018-10-10 16:42:09,606 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 34 states. [2018-10-10 16:42:10,868 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 16:42:11,087 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-10-10 16:42:11,355 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-10 16:42:12,771 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-10 16:42:12,972 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-10 16:42:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:42:15,153 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-10 16:42:15,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-10 16:42:15,154 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 108 [2018-10-10 16:42:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:42:15,156 INFO L225 Difference]: With dead ends: 133 [2018-10-10 16:42:15,156 INFO L226 Difference]: Without dead ends: 133 [2018-10-10 16:42:15,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=694, Invalid=4562, Unknown=0, NotChecked=0, Total=5256 [2018-10-10 16:42:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-10 16:42:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2018-10-10 16:42:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-10 16:42:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-10 16:42:15,167 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 108 [2018-10-10 16:42:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:42:15,168 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-10 16:42:15,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-10 16:42:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-10 16:42:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-10 16:42:15,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:42:15,170 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:42:15,170 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:42:15,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:42:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash -417455041, now seen corresponding path program 4 times [2018-10-10 16:42:15,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:42:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:15,599 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 3 [2018-10-10 16:42:16,096 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2018-10-10 16:42:16,350 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2018-10-10 16:42:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:18,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:18,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 16:42:18,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 16:42:18,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 16:42:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1546, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 16:42:18,300 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 41 states. [2018-10-10 16:42:19,980 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-10 16:42:20,295 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-10 16:42:21,165 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:42:21,522 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-10 16:42:21,741 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 16:42:21,986 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-10-10 16:42:22,336 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-10 16:42:22,558 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-10 16:42:22,891 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:42:23,215 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-10 16:42:23,427 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 16:42:23,719 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2018-10-10 16:42:24,025 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2018-10-10 16:42:25,180 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-10 16:42:25,376 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:42:26,466 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-10 16:42:26,849 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-10 16:42:27,323 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-10 16:42:27,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:42:27,769 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-10 16:42:27,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-10 16:42:27,770 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 121 [2018-10-10 16:42:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:42:27,771 INFO L225 Difference]: With dead ends: 146 [2018-10-10 16:42:27,771 INFO L226 Difference]: Without dead ends: 146 [2018-10-10 16:42:27,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=903, Invalid=6929, Unknown=0, NotChecked=0, Total=7832 [2018-10-10 16:42:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-10 16:42:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2018-10-10 16:42:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-10 16:42:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-10 16:42:27,783 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 121 [2018-10-10 16:42:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:42:27,784 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-10 16:42:27,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 16:42:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-10 16:42:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-10 16:42:27,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:42:27,787 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:42:27,787 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:42:27,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:42:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1720013587, now seen corresponding path program 5 times [2018-10-10 16:42:27,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:42:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:31,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:31,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 16:42:31,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 16:42:31,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 16:42:31,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2016, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 16:42:31,196 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 47 states. [2018-10-10 16:42:33,911 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 16:42:34,198 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:42:34,644 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 16:42:34,974 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:42:35,365 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2018-10-10 16:42:35,868 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2018-10-10 16:42:36,176 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-10 16:42:36,390 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 16:42:36,648 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 16:42:37,043 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 16:42:37,310 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:42:37,851 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 16:42:38,079 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 16:42:38,397 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:42:38,598 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:42:39,002 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2018-10-10 16:42:39,440 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2018-10-10 16:42:39,940 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2018-10-10 16:42:40,398 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 130 [2018-10-10 16:42:40,722 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-10 16:42:41,106 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-10 16:42:41,507 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2018-10-10 16:42:42,045 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2018-10-10 16:42:42,440 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2018-10-10 16:42:43,166 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-10 16:42:43,662 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2018-10-10 16:42:44,009 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2018-10-10 16:42:44,375 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2018-10-10 16:42:44,740 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-10 16:42:45,055 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2018-10-10 16:42:45,398 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-10 16:42:45,782 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-10 16:42:45,990 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:42:46,188 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:42:46,415 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 16:42:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:42:46,455 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-10 16:42:46,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-10 16:42:46,459 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 134 [2018-10-10 16:42:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:42:46,460 INFO L225 Difference]: With dead ends: 159 [2018-10-10 16:42:46,460 INFO L226 Difference]: Without dead ends: 159 [2018-10-10 16:42:46,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1256, Invalid=8844, Unknown=0, NotChecked=0, Total=10100 [2018-10-10 16:42:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-10 16:42:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2018-10-10 16:42:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-10 16:42:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-10 16:42:46,471 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 134 [2018-10-10 16:42:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:42:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-10 16:42:46,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 16:42:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-10 16:42:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-10 16:42:46,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:42:46,474 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:42:46,474 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:42:46,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:42:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash -193319169, now seen corresponding path program 6 times [2018-10-10 16:42:46,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:42:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:47,183 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-10-10 16:42:47,313 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:42:47,544 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:42:47,702 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-10 16:42:47,979 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:42:48,138 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:42:48,273 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-10-10 16:42:48,537 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 16:42:48,777 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-10 16:42:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:51,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:51,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 16:42:51,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 16:42:51,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 16:42:51,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2496, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 16:42:51,030 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 52 states. [2018-10-10 16:42:53,595 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 16:42:53,868 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 16:42:54,210 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 16:42:54,699 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:42:55,074 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 16:42:55,537 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 142 [2018-10-10 16:42:56,091 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2018-10-10 16:42:56,414 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 16:42:56,673 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 16:42:57,183 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2018-10-10 16:42:57,875 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2018-10-10 16:42:58,527 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 155 [2018-10-10 16:42:59,113 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 138 [2018-10-10 16:42:59,806 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 161 [2018-10-10 16:43:00,315 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2018-10-10 16:43:00,715 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 138 [2018-10-10 16:43:01,275 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 160 [2018-10-10 16:43:01,997 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 163 [2018-10-10 16:43:02,657 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 166 [2018-10-10 16:43:03,109 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-10 16:43:03,681 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 165 [2018-10-10 16:43:04,185 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2018-10-10 16:43:04,601 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 140 [2018-10-10 16:43:05,099 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-10 16:43:05,623 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2018-10-10 16:43:06,163 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-10 16:43:06,580 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2018-10-10 16:43:07,037 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 151 [2018-10-10 16:43:07,480 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-10 16:43:07,867 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-10 16:43:08,325 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2018-10-10 16:43:09,043 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2018-10-10 16:43:09,559 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-10 16:43:09,957 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 131 [2018-10-10 16:43:10,398 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2018-10-10 16:43:10,804 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-10 16:43:11,188 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-10 16:43:11,642 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-10 16:43:11,899 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 16:43:12,142 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 16:43:12,419 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 16:43:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:43:12,455 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-10 16:43:12,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-10 16:43:12,456 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 147 [2018-10-10 16:43:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:43:12,458 INFO L225 Difference]: With dead ends: 172 [2018-10-10 16:43:12,458 INFO L226 Difference]: Without dead ends: 172 [2018-10-10 16:43:12,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=1574, Invalid=10636, Unknown=0, NotChecked=0, Total=12210 [2018-10-10 16:43:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-10 16:43:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2018-10-10 16:43:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-10 16:43:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-10 16:43:12,468 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 147 [2018-10-10 16:43:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:43:12,469 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-10 16:43:12,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 16:43:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-10 16:43:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-10 16:43:12,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:43:12,472 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:43:12,472 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:43:12,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:43:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 836114989, now seen corresponding path program 7 times [2018-10-10 16:43:12,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:43:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:43:13,871 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 16:43:14,002 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 16:43:14,156 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 16:43:14,370 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 16:43:14,525 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-10 16:43:14,702 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 16:43:14,847 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 16:43:15,311 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-10 16:43:15,514 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-10 16:43:15,693 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-10 16:43:15,864 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-10 16:43:16,027 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-10 16:43:16,352 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-10 16:43:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:43:19,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:43:19,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 16:43:19,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 16:43:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 16:43:19,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=3055, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 16:43:19,419 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 57 states. [2018-10-10 16:43:22,522 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 16:43:22,861 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:43:23,265 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 16:43:23,993 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 16:43:24,475 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:43:25,042 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 151 [2018-10-10 16:43:25,742 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 178 [2018-10-10 16:43:26,147 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 16:43:26,478 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 16:43:27,084 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2018-10-10 16:43:27,701 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 16:43:28,124 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 16:43:28,681 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 156 [2018-10-10 16:43:29,385 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 188 [2018-10-10 16:43:29,793 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 16:43:30,098 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 16:43:30,476 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 16:43:31,053 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 16:43:31,456 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:43:31,788 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 16:43:32,172 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 16:43:32,555 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-10 16:43:32,854 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-10 16:43:33,406 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2018-10-10 16:43:34,273 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-10 16:43:34,875 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 160 [2018-10-10 16:43:35,194 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 16:43:35,559 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 16:43:35,922 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 16:43:36,199 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 16:43:36,527 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-10 16:43:37,068 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:43:37,415 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 16:43:37,720 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:43:38,061 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-10 16:43:38,405 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-10 16:43:38,673 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:43:39,223 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2018-10-10 16:43:39,959 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 143 [2018-10-10 16:43:40,505 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-10 16:43:40,790 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 16:43:41,107 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:43:41,408 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:43:41,659 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 16:43:42,292 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:43:42,586 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:43:42,842 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 16:43:43,143 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 16:43:43,777 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-10 16:43:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:43:43,875 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-10 16:43:43,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-10 16:43:43,875 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 160 [2018-10-10 16:43:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:43:43,877 INFO L225 Difference]: With dead ends: 185 [2018-10-10 16:43:43,877 INFO L226 Difference]: Without dead ends: 185 [2018-10-10 16:43:43,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=1355, Invalid=13897, Unknown=0, NotChecked=0, Total=15252 [2018-10-10 16:43:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-10 16:43:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2018-10-10 16:43:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-10 16:43:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-10 16:43:43,887 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 160 [2018-10-10 16:43:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:43:43,887 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-10 16:43:43,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 16:43:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-10 16:43:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-10 16:43:43,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:43:43,890 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:43:43,890 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:43:43,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:43:43,891 INFO L82 PathProgramCache]: Analyzing trace with hash -297121345, now seen corresponding path program 8 times [2018-10-10 16:43:43,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:43:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:43:45,083 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-10 16:43:45,330 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 16:43:45,639 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 16:43:45,893 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 16:43:46,184 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 16:43:46,481 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 16:43:46,732 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 16:43:46,979 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-10 16:43:47,223 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-10 16:43:47,518 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-10 16:43:47,859 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-10 16:43:48,143 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 16:43:48,515 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 16:43:48,793 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 16:43:49,081 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 16:43:49,435 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 16:43:49,729 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-10 16:43:49,979 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 16:43:50,230 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 16:43:50,465 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 16:43:50,704 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 16:43:50,934 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 16:43:51,131 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-10 16:43:51,327 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 16:43:51,531 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 16:43:51,901 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:43:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:43:54,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:43:54,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-10 16:43:54,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-10 16:43:54,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-10 16:43:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3753, Unknown=0, NotChecked=0, Total=3906 [2018-10-10 16:43:54,472 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 63 states. [2018-10-10 16:43:57,630 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 16:43:58,018 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-10 16:43:58,445 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-10 16:43:58,930 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 16:43:59,783 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 16:44:00,365 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-10 16:44:01,032 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 173 [2018-10-10 16:44:01,866 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 205 [2018-10-10 16:44:02,350 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 16:44:02,725 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:44:03,479 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 187 [2018-10-10 16:44:04,215 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-10 16:44:04,795 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-10 16:44:05,479 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 179 [2018-10-10 16:44:06,328 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-10 16:44:06,826 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 16:44:07,189 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 16:44:07,877 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2018-10-10 16:44:08,583 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 16:44:09,063 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 16:44:09,461 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 16:44:09,992 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-10 16:44:10,466 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 16:44:10,823 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 16:44:11,497 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2018-10-10 16:44:12,464 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 180 [2018-10-10 16:44:13,177 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2018-10-10 16:44:13,578 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 16:44:14,038 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 16:44:14,527 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-10 16:44:14,888 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:44:15,584 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2018-10-10 16:44:16,550 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2018-10-10 16:44:17,029 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 16:44:17,408 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-10 16:44:17,840 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-10 16:44:18,266 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:44:18,606 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 16:44:19,202 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2018-10-10 16:44:19,879 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 16:44:20,378 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 16:44:20,733 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 16:44:21,121 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:44:21,507 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 16:44:21,823 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:44:22,374 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 156 [2018-10-10 16:44:23,000 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 16:44:23,389 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 16:44:23,739 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-10 16:44:24,148 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:44:24,516 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:44:24,815 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-10 16:44:25,624 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:44:25,982 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:44:26,281 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-10 16:44:26,641 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 16:44:27,375 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-10 16:44:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:44:27,489 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-10 16:44:27,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-10 16:44:27,489 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 173 [2018-10-10 16:44:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:44:27,492 INFO L225 Difference]: With dead ends: 198 [2018-10-10 16:44:27,492 INFO L226 Difference]: Without dead ends: 198 [2018-10-10 16:44:27,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=1522, Invalid=17110, Unknown=0, NotChecked=0, Total=18632 [2018-10-10 16:44:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-10 16:44:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2018-10-10 16:44:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-10 16:44:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-10 16:44:27,497 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 173 [2018-10-10 16:44:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:44:27,497 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-10 16:44:27,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-10 16:44:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-10 16:44:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-10 16:44:27,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:44:27,500 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:44:27,500 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:44:27,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:44:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1764264083, now seen corresponding path program 9 times [2018-10-10 16:44:27,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:44:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:44:28,912 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2018-10-10 16:44:29,238 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-10 16:44:29,493 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-10 16:44:29,761 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-10 16:44:30,052 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 60 [2018-10-10 16:44:30,467 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-10 16:44:30,750 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-10 16:44:31,024 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2018-10-10 16:44:31,300 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2018-10-10 16:44:31,620 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-10 16:44:31,970 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2018-10-10 16:44:32,286 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-10 16:44:32,595 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-10 16:44:32,915 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-10 16:44:33,228 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-10 16:44:33,590 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 16:44:33,866 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 16:44:34,123 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-10 16:44:34,375 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-10 16:44:34,637 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-10 16:44:34,880 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-10 16:44:35,161 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-10 16:44:35,376 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-10 16:44:35,607 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-10 16:44:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:44:39,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:44:39,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-10 16:44:39,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-10 16:44:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-10 16:44:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=4578, Unknown=0, NotChecked=0, Total=4970 [2018-10-10 16:44:39,432 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 71 states. [2018-10-10 16:44:42,170 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-10 16:44:42,549 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 16:44:42,982 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 16:44:43,521 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 16:44:44,244 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-10 16:44:44,863 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-10 16:44:45,683 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 187 [2018-10-10 16:44:46,622 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 222 [2018-10-10 16:44:47,163 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2018-10-10 16:44:47,586 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 16:44:48,074 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-10 16:44:48,716 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-10 16:44:49,233 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-10 16:44:49,924 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 196 [2018-10-10 16:44:50,750 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 240 [2018-10-10 16:44:51,601 WARN L178 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-10 16:44:52,278 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2018-10-10 16:44:53,080 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-10 16:44:54,059 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-10 16:44:54,948 WARN L178 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-10 16:44:55,610 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-10 16:44:56,457 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 235 [2018-10-10 16:44:57,301 WARN L178 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2018-10-10 16:44:58,001 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2018-10-10 16:44:58,811 WARN L178 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-10 16:44:59,655 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 208 [2018-10-10 16:45:00,530 WARN L178 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 211 [2018-10-10 16:45:01,241 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2018-10-10 16:45:02,015 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 221 [2018-10-10 16:45:02,806 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-10 16:45:03,487 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2018-10-10 16:45:04,257 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-10 16:45:05,024 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-10 16:45:05,828 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-10 16:45:06,533 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-10 16:45:07,270 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 211 [2018-10-10 16:45:08,044 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-10 16:45:08,722 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-10 16:45:09,432 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2018-10-10 16:45:10,196 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-10 16:45:10,964 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2018-10-10 16:45:11,653 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 178 [2018-10-10 16:45:12,378 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 199 [2018-10-10 16:45:13,109 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 198 [2018-10-10 16:45:13,754 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2018-10-10 16:45:14,415 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-10 16:45:15,120 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-10 16:45:15,834 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-10 16:45:16,503 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 170 [2018-10-10 16:45:17,180 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2018-10-10 16:45:17,870 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 183 [2018-10-10 16:45:18,517 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2018-10-10 16:45:19,162 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-10-10 16:45:19,849 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 177 [2018-10-10 16:45:20,537 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-10 16:45:21,133 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 163 [2018-10-10 16:45:21,847 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 169 [2018-10-10 16:45:22,486 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2018-10-10 16:45:23,109 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2018-10-10 16:45:23,720 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2018-10-10 16:45:24,381 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-10 16:45:24,795 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 16:45:25,192 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 16:45:25,628 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 16:45:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:45:25,671 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-10 16:45:25,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-10 16:45:25,673 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 186 [2018-10-10 16:45:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:45:25,675 INFO L225 Difference]: With dead ends: 211 [2018-10-10 16:45:25,675 INFO L226 Difference]: Without dead ends: 211 [2018-10-10 16:45:25,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=3138, Invalid=19814, Unknown=0, NotChecked=0, Total=22952 [2018-10-10 16:45:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-10 16:45:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2018-10-10 16:45:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-10 16:45:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-10 16:45:25,681 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 186 [2018-10-10 16:45:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:45:25,681 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-10 16:45:25,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-10 16:45:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-10 16:45:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-10 16:45:25,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:45:25,683 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:45:25,683 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:45:25,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:45:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2090497151, now seen corresponding path program 10 times [2018-10-10 16:45:25,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:45:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:45:26,701 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2018-10-10 16:45:27,320 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 64 [2018-10-10 16:45:27,798 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 16:45:28,244 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 16:45:28,689 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 16:45:29,204 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 67 [2018-10-10 16:45:29,761 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 16:45:30,233 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-10 16:45:30,703 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-10 16:45:31,168 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-10 16:45:31,748 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-10 16:45:32,333 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2018-10-10 16:45:32,864 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 16:45:33,382 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 16:45:33,890 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 16:45:34,441 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 16:45:34,941 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2018-10-10 16:45:35,352 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-10 16:45:35,769 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 16:45:36,185 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 16:45:36,616 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 16:45:37,169 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 16:45:37,604 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-10 16:45:37,903 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 16:45:38,200 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 16:45:38,500 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 16:45:38,801 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 16:45:39,095 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 16:45:39,394 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-10 16:45:39,649 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 16:45:39,888 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 16:45:40,140 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 16:45:40,377 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 16:45:40,617 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 16:45:40,851 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-10-10 16:45:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:45:44,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:45:44,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-10 16:45:44,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-10 16:45:44,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-10 16:45:44,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-10 16:45:44,530 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 76 states. [2018-10-10 16:45:47,761 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-10 16:45:48,210 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 16:45:48,742 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 16:45:49,417 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-10 16:45:50,332 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-10 16:45:51,105 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-10 16:45:51,990 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 213 [2018-10-10 16:45:53,091 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 253 [2018-10-10 16:45:53,744 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-10 16:45:54,257 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-10 16:45:55,210 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 226 [2018-10-10 16:45:56,385 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2018-10-10 16:45:57,453 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 232 [2018-10-10 16:45:58,540 WARN L178 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 215 [2018-10-10 16:45:59,830 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 284 DAG size of output: 261 [2018-10-10 16:46:00,794 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 261 [2018-10-10 16:46:01,554 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2018-10-10 16:46:02,602 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-10 16:46:03,877 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2018-10-10 16:46:05,027 WARN L178 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 238 [2018-10-10 16:46:05,816 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 220 [2018-10-10 16:46:06,742 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 261 [2018-10-10 16:46:07,753 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 259 [2018-10-10 16:46:08,557 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 218 [2018-10-10 16:46:09,491 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-10 16:46:10,477 WARN L178 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 233 [2018-10-10 16:46:11,503 WARN L178 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 236 [2018-10-10 16:46:12,246 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 213 [2018-10-10 16:46:13,186 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 247 [2018-10-10 16:46:14,100 WARN L178 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 245 [2018-10-10 16:46:14,861 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2018-10-10 16:46:15,749 WARN L178 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 217 [2018-10-10 16:46:16,670 WARN L178 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 220 [2018-10-10 16:46:17,651 WARN L178 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 223 [2018-10-10 16:46:18,438 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2018-10-10 16:46:19,277 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 237 [2018-10-10 16:46:20,167 WARN L178 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 235 [2018-10-10 16:46:20,902 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 206 [2018-10-10 16:46:21,784 WARN L178 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 212 [2018-10-10 16:46:22,725 WARN L178 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 215 [2018-10-10 16:46:23,728 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 218 [2018-10-10 16:46:24,457 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 202 [2018-10-10 16:46:25,292 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 225 [2018-10-10 16:46:26,190 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 223 [2018-10-10 16:46:26,969 WARN L178 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-10 16:46:27,829 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 214 [2018-10-10 16:46:28,836 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-10 16:46:29,812 WARN L178 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 220 [2018-10-10 16:46:30,552 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-10 16:46:31,384 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 219 [2018-10-10 16:46:32,200 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 214 [2018-10-10 16:46:32,955 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2018-10-10 16:46:33,793 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 200 [2018-10-10 16:46:34,638 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2018-10-10 16:46:35,517 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2018-10-10 16:46:36,221 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2018-10-10 16:46:37,001 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2018-10-10 16:46:37,779 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-10 16:46:38,525 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-10 16:46:39,259 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2018-10-10 16:46:40,320 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 195 [2018-10-10 16:46:41,123 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-10 16:46:41,841 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 185 [2018-10-10 16:46:42,579 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 191 [2018-10-10 16:46:43,337 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2018-10-10 16:46:44,047 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-10 16:46:44,845 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-10 16:46:45,320 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 16:46:45,787 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-10 16:46:46,288 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-10 16:46:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:46:46,347 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-10 16:46:46,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-10 16:46:46,348 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 199 [2018-10-10 16:46:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:46:46,350 INFO L225 Difference]: With dead ends: 224 [2018-10-10 16:46:46,350 INFO L226 Difference]: Without dead ends: 224 [2018-10-10 16:46:46,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 76.0s TimeCoverageRelationStatistics Valid=3552, Invalid=22854, Unknown=0, NotChecked=0, Total=26406 [2018-10-10 16:46:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-10 16:46:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2018-10-10 16:46:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-10 16:46:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-10 16:46:46,357 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 199 [2018-10-10 16:46:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:46:46,358 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-10 16:46:46,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-10 16:46:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-10 16:46:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-10 16:46:46,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:46:46,359 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:46:46,359 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:46:46,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:46:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1812806483, now seen corresponding path program 11 times [2018-10-10 16:46:46,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:46:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:46:48,881 WARN L178 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2018-10-10 16:46:49,667 WARN L178 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-10 16:46:50,477 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-10 16:46:51,316 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-10 16:46:52,161 WARN L178 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 70 [2018-10-10 16:46:53,012 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-10 16:46:53,915 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-10 16:46:54,784 WARN L178 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2018-10-10 16:46:55,581 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2018-10-10 16:46:56,500 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 75 [2018-10-10 16:46:57,447 WARN L178 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 77 [2018-10-10 16:46:58,357 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 72 [2018-10-10 16:46:59,311 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 72 [2018-10-10 16:47:00,199 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 70 [2018-10-10 16:47:01,078 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 70 [2018-10-10 16:47:01,977 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-10 16:47:02,698 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-10 16:47:03,409 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-10 16:47:04,195 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-10 16:47:04,894 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-10 16:47:05,515 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-10 16:47:06,236 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:47:06,775 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-10 16:47:07,345 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-10 16:47:07,907 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-10 16:47:08,459 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:47:08,940 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:47:09,499 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 16:47:09,915 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-10 16:47:10,334 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 16:47:10,761 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 16:47:11,178 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-10 16:47:11,521 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-10 16:47:11,927 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 16:47:12,248 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-10 16:47:12,559 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:47:12,869 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:47:13,175 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 16:47:13,433 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 16:47:13,759 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-10-10 16:47:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:47:17,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:47:17,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-10 16:47:17,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-10 16:47:17,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-10 16:47:17,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=6219, Unknown=0, NotChecked=0, Total=6642 [2018-10-10 16:47:17,882 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 82 states. [2018-10-10 16:47:21,331 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 16:47:22,426 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:47:23,032 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-10 16:47:23,657 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-10 16:47:24,392 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-10 16:47:25,536 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-10 16:47:26,316 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-10 16:47:26,925 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 16:47:27,701 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2018-10-10 16:47:28,495 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-10 16:47:29,067 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-10 16:47:30,291 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 248 [2018-10-10 16:47:31,570 WARN L178 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 249 [2018-10-10 16:47:32,979 WARN L178 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2018-10-10 16:47:34,263 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2018-10-10 16:47:35,222 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 234 [2018-10-10 16:47:36,303 WARN L178 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 287 [2018-10-10 16:47:37,470 WARN L178 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 288 [2018-10-10 16:47:38,354 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 235 [2018-10-10 16:47:39,423 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 242 [2018-10-10 16:47:40,897 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 245 [2018-10-10 16:47:42,090 WARN L178 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 248 [2018-10-10 16:47:42,946 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 228 [2018-10-10 16:47:43,958 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 275 [2018-10-10 16:47:45,114 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 276 [2018-10-10 16:47:45,974 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 229 [2018-10-10 16:47:46,954 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 236 [2018-10-10 16:47:48,323 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 239 [2018-10-10 16:47:49,477 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 242 [2018-10-10 16:47:50,414 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 222 [2018-10-10 16:47:51,440 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 263 [2018-10-10 16:47:52,518 WARN L178 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 264 [2018-10-10 16:47:53,363 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2018-10-10 16:47:54,391 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 235 [2018-10-10 16:47:55,854 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 238 [2018-10-10 16:47:56,991 WARN L178 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 241 [2018-10-10 16:47:57,880 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 222 [2018-10-10 16:47:58,935 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 257 [2018-10-10 16:48:00,039 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 260 [2018-10-10 16:48:00,944 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 225 [2018-10-10 16:48:01,991 WARN L178 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 229 [2018-10-10 16:48:03,045 WARN L178 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 232 [2018-10-10 16:48:04,109 WARN L178 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 235 [2018-10-10 16:48:04,966 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 216 [2018-10-10 16:48:06,029 WARN L178 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 245 [2018-10-10 16:48:07,052 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 248 [2018-10-10 16:48:07,917 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-10 16:48:08,879 WARN L178 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 223 [2018-10-10 16:48:09,906 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 226 [2018-10-10 16:48:11,000 WARN L178 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 229 [2018-10-10 16:48:11,849 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 210 [2018-10-10 16:48:12,813 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 233 [2018-10-10 16:48:13,771 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 236 [2018-10-10 16:48:14,601 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 213 [2018-10-10 16:48:15,562 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 217 [2018-10-10 16:48:16,542 WARN L178 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 220 [2018-10-10 16:48:17,550 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 223 [2018-10-10 16:48:18,379 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 204 [2018-10-10 16:48:19,318 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 221 [2018-10-10 16:48:20,259 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 224 [2018-10-10 16:48:21,129 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 207 [2018-10-10 16:48:22,008 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 213 [2018-10-10 16:48:22,953 WARN L178 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 216 [2018-10-10 16:48:23,896 WARN L178 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 219 [2018-10-10 16:48:24,703 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 200 [2018-10-10 16:48:25,603 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 213 [2018-10-10 16:48:26,547 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 213 [2018-10-10 16:48:27,351 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-10 16:48:28,191 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2018-10-10 16:48:29,033 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 207 [2018-10-10 16:48:29,895 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 210 [2018-10-10 16:48:30,668 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 193 [2018-10-10 16:48:31,511 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 199 [2018-10-10 16:48:32,336 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-10 16:48:33,110 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2018-10-10 16:48:33,971 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-10 16:48:34,535 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 16:48:35,072 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 16:48:35,607 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 16:48:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:48:35,704 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-10 16:48:35,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-10 16:48:35,704 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 212 [2018-10-10 16:48:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:48:35,706 INFO L225 Difference]: With dead ends: 237 [2018-10-10 16:48:35,706 INFO L226 Difference]: Without dead ends: 237 [2018-10-10 16:48:35,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 101.0s TimeCoverageRelationStatistics Valid=3728, Invalid=27424, Unknown=0, NotChecked=0, Total=31152 [2018-10-10 16:48:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-10 16:48:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 226. [2018-10-10 16:48:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-10 16:48:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-10 16:48:35,710 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 212 [2018-10-10 16:48:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:48:35,711 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-10 16:48:35,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-10 16:48:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-10 16:48:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-10 16:48:35,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:48:35,713 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:48:35,713 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:48:35,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:48:35,713 INFO L82 PathProgramCache]: Analyzing trace with hash 276213567, now seen corresponding path program 12 times [2018-10-10 16:48:35,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:48:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:48:37,354 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-10 16:48:38,714 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 77 [2018-10-10 16:48:39,747 WARN L178 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 16:48:40,636 WARN L178 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 16:48:41,732 WARN L178 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 16:48:42,745 WARN L178 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 80 [2018-10-10 16:48:43,946 WARN L178 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 16:48:45,002 WARN L178 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-10 16:48:46,065 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-10 16:48:47,217 WARN L178 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-10 16:48:48,357 WARN L178 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 81 [2018-10-10 16:48:49,520 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 83 [2018-10-10 16:48:50,623 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-10 16:48:51,812 WARN L178 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-10 16:48:52,922 WARN L178 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-10 16:48:54,041 WARN L178 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 79 [2018-10-10 16:48:55,093 WARN L178 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 74 [2018-10-10 16:48:55,905 WARN L178 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 75 [2018-10-10 16:48:56,780 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 72 [2018-10-10 16:48:57,628 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 72 [2018-10-10 16:48:58,431 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-10 16:48:59,319 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-10 16:49:00,221 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 68 [2018-10-10 16:49:00,770 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-10 16:49:01,341 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 16:49:02,016 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 16:49:02,557 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 16:49:03,166 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-10 16:49:03,701 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2018-10-10 16:49:04,706 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-10 16:49:05,146 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 16:49:05,592 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-10 16:49:06,038 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 16:49:06,498 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-10 16:49:07,072 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-10 16:49:07,404 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 16:49:07,733 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 16:49:08,067 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-10 16:49:08,400 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 16:49:08,729 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-10 16:49:09,049 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-10 16:49:09,323 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 16:49:09,590 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 16:49:09,854 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-10 16:49:10,120 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 16:49:10,379 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-10 16:49:10,638 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-10-10 16:49:11,960 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-10-10 16:49:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:49:15,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:49:15,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-10 16:49:15,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-10 16:49:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-10 16:49:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=7220, Unknown=0, NotChecked=0, Total=7656 [2018-10-10 16:49:15,385 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 88 states. [2018-10-10 16:49:18,995 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-10 16:49:20,129 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-10 16:49:20,793 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-10 16:49:21,514 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-10 16:49:22,435 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2018-10-10 16:49:23,786 WARN L178 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2018-10-10 16:49:24,804 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-10 16:49:25,994 WARN L178 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 242 [2018-10-10 16:49:27,469 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 322 DAG size of output: 289 [2018-10-10 16:49:28,378 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2018-10-10 16:49:29,045 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-10 16:49:30,374 WARN L178 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 262 [2018-10-10 16:49:32,122 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 275 DAG size of output: 265 [2018-10-10 16:49:33,624 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 280 DAG size of output: 268 [2018-10-10 16:49:35,038 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 270 DAG size of output: 251 [2018-10-10 16:49:36,831 WARN L178 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 337 DAG size of output: 313 [2018-10-10 16:49:38,265 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 323 DAG size of output: 313 [2018-10-10 16:49:39,321 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-10-10 16:49:40,652 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 273 DAG size of output: 261 [2018-10-10 16:49:42,307 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 279 DAG size of output: 264 [2018-10-10 16:49:43,833 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 285 DAG size of output: 267 [2018-10-10 16:49:44,840 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 243 [2018-10-10 16:49:46,103 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 321 DAG size of output: 292 [2018-10-10 16:49:47,486 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 313 DAG size of output: 295 [2018-10-10 16:49:48,536 WARN L178 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 246 [2018-10-10 16:49:49,835 WARN L178 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 268 [2018-10-10 16:49:51,508 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 289 DAG size of output: 273 [2018-10-10 16:49:53,017 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 295 DAG size of output: 276 [2018-10-10 16:49:54,033 WARN L178 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 238 [2018-10-10 16:49:55,280 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 315 DAG size of output: 282 [2018-10-10 16:49:56,611 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 285 [2018-10-10 16:49:57,641 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-10 16:49:59,003 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 272 DAG size of output: 256 [2018-10-10 16:50:00,706 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 278 DAG size of output: 259 [2018-10-10 16:50:02,186 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 284 DAG size of output: 262 [2018-10-10 16:50:03,260 WARN L178 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 239 [2018-10-10 16:50:04,517 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 313 DAG size of output: 278 [2018-10-10 16:50:05,842 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 283 [2018-10-10 16:50:06,860 WARN L178 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 244 [2018-10-10 16:50:08,111 WARN L178 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 254 [2018-10-10 16:50:09,426 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 276 DAG size of output: 257 [2018-10-10 16:50:10,771 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 282 DAG size of output: 260 [2018-10-10 16:50:11,801 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 232 [2018-10-10 16:50:13,015 WARN L178 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 264 [2018-10-10 16:50:14,269 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 269 [2018-10-10 16:50:15,284 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 237