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_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 18:32:54,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 18:32:54,589 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 18:32:54,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 18:32:54,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 18:32:54,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 18:32:54,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 18:32:54,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 18:32:54,608 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 18:32:54,609 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 18:32:54,609 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 18:32:54,610 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 18:32:54,611 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 18:32:54,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 18:32:54,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 18:32:54,615 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 18:32:54,616 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 18:32:54,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 18:32:54,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 18:32:54,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 18:32:54,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 18:32:54,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 18:32:54,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 18:32:54,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 18:32:54,627 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 18:32:54,628 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 18:32:54,631 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 18:32:54,632 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 18:32:54,633 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 18:32:54,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 18:32:54,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 18:32:54,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-14 18:32:54,643 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 18:32:54,662 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 18:32:54,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 18:32:54,663 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 18:32:54,663 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 18:32:54,663 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 18:32:54,669 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 18:32:54,671 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 18:32:54,671 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 18:32:54,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 18:32:54,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 18:32:54,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 18:32:54,672 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 18:32:54,672 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 18:32:54,673 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 18:32:54,673 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 18:32:54,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 18:32:54,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 18:32:54,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 18:32:54,751 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 18:32:54,751 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 18:32:54,752 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-14 18:32:54,752 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-14 18:32:54,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 18:32:54,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-14 18:32:54,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 18:32:54,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 18:32:54,852 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 18:32:54,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... [2018-10-14 18:32:54,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 18:32:54,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 18:32:54,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 18:32:54,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 18:32:54,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 18:32:55,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 18:32:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 18:32:55,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 18:32:55,589 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 18:32:55,590 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:32:55 BoogieIcfgContainer [2018-10-14 18:32:55,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 18:32:55,590 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-14 18:32:55,590 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-14 18:32:55,591 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-14 18:32:55,594 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:32:55" (1/1) ... [2018-10-14 18:32:55,601 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-14 18:32:55,601 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-14 18:32:55,641 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-14 18:32:55,708 INFO L219 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-14 18:32:55,732 INFO L282 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-14 18:32:55,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-14 18:33:23,760 INFO L315 AbstractInterpreter]: Visited 79 different actions 96 times. Merged at 15 different actions 16 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-10-14 18:33:23,763 INFO L306 apSepIcfgTransformer]: finished equality analysis [2018-10-14 18:33:23,767 INFO L318 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-14 18:33:23,849 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;) [2018-10-14 18:33:23,901 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;) [2018-10-14 18:33:23,903 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-14 18:33:23,904 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-14 18:33:23,904 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-14 18:33:23,904 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-14 18:33:23,904 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-14 18:33:23,905 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-14 18:33:23,905 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-14 18:33:23,905 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-14 18:33:23,905 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-14 18:33:23,905 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-14 18:33:23,906 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-14 18:33:23,906 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-14 18:33:23,906 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-14 18:33:23,906 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-14 18:33:23,906 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-14 18:33:23,909 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-14 18:33:23,931 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.10 06:33:23 BasicIcfg [2018-10-14 18:33:23,932 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-14 18:33:23,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 18:33:23,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 18:33:23,936 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 18:33:23,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:32:54" (1/3) ... [2018-10-14 18:33:23,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53504fbc and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:33:23, skipping insertion in model container [2018-10-14 18:33:23,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:32:55" (2/3) ... [2018-10-14 18:33:23,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53504fbc and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:33:23, skipping insertion in model container [2018-10-14 18:33:23,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.10 06:33:23" (3/3) ... [2018-10-14 18:33:23,940 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-14 18:33:23,952 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 18:33:23,960 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 18:33:23,979 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 18:33:24,003 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 18:33:24,004 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 18:33:24,004 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 18:33:24,004 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 18:33:24,005 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 18:33:24,005 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 18:33:24,005 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 18:33:24,005 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 18:33:24,005 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 18:33:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-14 18:33:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-14 18:33:24,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:24,041 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] [2018-10-14 18:33:24,042 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:24,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash -572282269, now seen corresponding path program 1 times [2018-10-14 18:33:24,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:33:25,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 18:33:25,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 18:33:25,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 18:33:25,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 18:33:25,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-14 18:33:25,692 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 11 states. [2018-10-14 18:33:26,662 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-14 18:33:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:33:26,878 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-14 18:33:26,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 18:33:26,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2018-10-14 18:33:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:33:26,895 INFO L225 Difference]: With dead ends: 91 [2018-10-14 18:33:26,895 INFO L226 Difference]: Without dead ends: 91 [2018-10-14 18:33:26,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-14 18:33:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-14 18:33:26,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-14 18:33:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-14 18:33:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-14 18:33:26,939 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-14 18:33:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:33:26,940 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-14 18:33:26,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 18:33:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-14 18:33:26,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-14 18:33:26,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:26,943 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] [2018-10-14 18:33:26,943 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:26,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:26,944 INFO L82 PathProgramCache]: Analyzing trace with hash 188123709, now seen corresponding path program 1 times [2018-10-14 18:33:26,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:33:27,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:33:27,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 18:33:27,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 18:33:27,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 18:33:27,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-14 18:33:27,292 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 12 states. [2018-10-14 18:33:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:33:28,195 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-14 18:33:28,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 18:33:28,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2018-10-14 18:33:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:33:28,199 INFO L225 Difference]: With dead ends: 104 [2018-10-14 18:33:28,199 INFO L226 Difference]: Without dead ends: 104 [2018-10-14 18:33:28,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2018-10-14 18:33:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-14 18:33:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-14 18:33:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-14 18:33:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-14 18:33:28,210 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-14 18:33:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:33:28,210 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-14 18:33:28,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 18:33:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-14 18:33:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-14 18:33:28,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:28,213 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] [2018-10-14 18:33:28,213 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:28,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:28,214 INFO L82 PathProgramCache]: Analyzing trace with hash 480492707, now seen corresponding path program 2 times [2018-10-14 18:33:28,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:33:29,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:33:29,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 18:33:29,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 18:33:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 18:33:29,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-14 18:33:29,094 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 21 states. [2018-10-14 18:33:29,603 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-14 18:33:30,245 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-14 18:33:30,496 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-14 18:33:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:33:31,631 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-14 18:33:31,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-14 18:33:31,632 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2018-10-14 18:33:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:33:31,634 INFO L225 Difference]: With dead ends: 117 [2018-10-14 18:33:31,634 INFO L226 Difference]: Without dead ends: 117 [2018-10-14 18:33:31,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 18:33:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-14 18:33:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-14 18:33:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-14 18:33:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-14 18:33:31,645 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-14 18:33:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:33:31,645 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-14 18:33:31,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 18:33:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-14 18:33:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-14 18:33:31,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:31,648 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] [2018-10-14 18:33:31,648 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:31,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:31,649 INFO L82 PathProgramCache]: Analyzing trace with hash -736747523, now seen corresponding path program 3 times [2018-10-14 18:33:31,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:32,311 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2018-10-14 18:33:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:33:32,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:33:32,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-14 18:33:32,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-14 18:33:32,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-14 18:33:32,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-10-14 18:33:32,846 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 26 states. [2018-10-14 18:33:34,193 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-14 18:33:34,445 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-14 18:33:34,633 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-14 18:33:35,319 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-14 18:33:35,574 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-14 18:33:35,833 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-14 18:33:36,060 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-14 18:33:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:33:36,923 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-14 18:33:36,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-14 18:33:36,924 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2018-10-14 18:33:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:33:36,927 INFO L225 Difference]: With dead ends: 130 [2018-10-14 18:33:36,927 INFO L226 Difference]: Without dead ends: 130 [2018-10-14 18:33:36,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 18:33:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-14 18:33:36,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-14 18:33:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-14 18:33:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-14 18:33:36,937 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-14 18:33:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:33:36,938 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-14 18:33:36,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-14 18:33:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-14 18:33:36,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-14 18:33:36,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:36,941 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] [2018-10-14 18:33:36,941 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:36,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1926594275, now seen corresponding path program 4 times [2018-10-14 18:33:36,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:37,683 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-14 18:33:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:33:38,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:33:38,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 18:33:38,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 18:33:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 18:33:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 18:33:38,631 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 33 states. [2018-10-14 18:33:40,073 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-14 18:33:40,436 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:33:40,714 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-14 18:33:40,940 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 18:33:41,107 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-14 18:33:41,306 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-14 18:33:41,490 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-14 18:33:41,757 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-14 18:33:41,984 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 18:33:42,266 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-14 18:33:42,734 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-14 18:33:43,072 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2018-10-14 18:33:43,451 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2018-10-14 18:33:43,785 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-10-14 18:33:44,051 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-14 18:33:44,369 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-14 18:33:45,193 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-14 18:33:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:33:45,404 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-14 18:33:45,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-14 18:33:45,405 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 118 [2018-10-14 18:33:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:33:45,407 INFO L225 Difference]: With dead ends: 143 [2018-10-14 18:33:45,408 INFO L226 Difference]: Without dead ends: 143 [2018-10-14 18:33:45,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=770, Invalid=2890, Unknown=0, NotChecked=0, Total=3660 [2018-10-14 18:33:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-14 18:33:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-14 18:33:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-14 18:33:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-14 18:33:45,419 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-14 18:33:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:33:45,419 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-14 18:33:45,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 18:33:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-14 18:33:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-14 18:33:45,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:45,422 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] [2018-10-14 18:33:45,422 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:45,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:45,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1606550973, now seen corresponding path program 5 times [2018-10-14 18:33:45,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:33:47,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:33:47,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 18:33:47,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 18:33:47,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 18:33:47,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 18:33:47,814 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 36 states. [2018-10-14 18:33:49,380 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 18:33:49,679 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:33:50,033 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 18:33:50,278 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:33:50,478 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 18:33:50,716 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-14 18:33:51,090 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-14 18:33:51,441 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-14 18:33:51,711 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 18:33:52,057 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-14 18:33:52,557 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 18:33:52,898 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-14 18:33:53,315 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-14 18:33:53,555 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-14 18:33:53,740 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-14 18:33:53,953 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:33:54,267 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-14 18:33:54,638 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 18:33:54,925 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-14 18:33:55,120 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-14 18:33:55,885 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-14 18:33:56,249 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-14 18:33:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:33:56,311 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-14 18:33:56,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-14 18:33:56,313 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 131 [2018-10-14 18:33:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:33:56,315 INFO L225 Difference]: With dead ends: 156 [2018-10-14 18:33:56,315 INFO L226 Difference]: Without dead ends: 156 [2018-10-14 18:33:56,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 18:33:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-14 18:33:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-14 18:33:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-14 18:33:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-14 18:33:56,325 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-14 18:33:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:33:56,326 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-14 18:33:56,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 18:33:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-14 18:33:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-14 18:33:56,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:33:56,329 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] [2018-10-14 18:33:56,329 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:33:56,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:33:56,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1086124323, now seen corresponding path program 6 times [2018-10-14 18:33:56,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:33:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:33:57,403 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-14 18:33:57,631 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-14 18:33:57,758 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-14 18:33:57,886 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-14 18:33:58,016 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-14 18:34:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:34:00,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:34:00,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 18:34:00,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 18:34:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 18:34:00,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 18:34:00,064 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 43 states. [2018-10-14 18:34:01,227 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:34:01,480 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-14 18:34:01,758 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 18:34:02,126 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 18:34:02,433 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 18:34:02,704 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 18:34:02,968 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-14 18:34:03,242 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 18:34:03,571 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:34:03,908 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 18:34:04,293 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2018-10-14 18:34:04,697 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2018-10-14 18:34:05,253 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2018-10-14 18:34:05,851 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-14 18:34:06,412 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2018-10-14 18:34:06,838 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-14 18:34:07,247 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-14 18:34:07,665 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2018-10-14 18:34:08,112 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2018-10-14 18:34:08,551 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-14 18:34:08,905 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-14 18:34:09,278 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-14 18:34:09,677 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-14 18:34:10,145 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-14 18:34:10,568 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-14 18:34:10,970 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-14 18:34:11,327 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-14 18:34:11,592 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:34:11,885 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 18:34:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:34:11,919 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-14 18:34:11,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 18:34:11,921 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 144 [2018-10-14 18:34:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:34:11,922 INFO L225 Difference]: With dead ends: 169 [2018-10-14 18:34:11,923 INFO L226 Difference]: Without dead ends: 169 [2018-10-14 18:34:11,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=1315, Invalid=5165, Unknown=0, NotChecked=0, Total=6480 [2018-10-14 18:34:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-14 18:34:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-14 18:34:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-14 18:34:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-14 18:34:11,932 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-14 18:34:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:34:11,933 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-14 18:34:11,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 18:34:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-14 18:34:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-14 18:34:11,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:34:11,936 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] [2018-10-14 18:34:11,936 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:34:11,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:34:11,937 INFO L82 PathProgramCache]: Analyzing trace with hash -596231299, now seen corresponding path program 7 times [2018-10-14 18:34:11,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:34:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:34:12,682 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-14 18:34:13,768 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-14 18:34:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:34:16,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:34:16,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 18:34:16,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 18:34:16,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 18:34:16,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 18:34:16,403 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 47 states. [2018-10-14 18:34:18,036 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 18:34:18,342 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 18:34:18,668 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:34:19,142 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 18:34:19,508 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:34:19,795 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 18:34:20,145 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-14 18:34:20,707 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-14 18:34:21,387 WARN L179 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2018-10-14 18:34:21,985 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2018-10-14 18:34:22,439 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 135 [2018-10-14 18:34:22,915 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-14 18:34:23,435 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-14 18:34:24,105 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 148 [2018-10-14 18:34:24,708 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 151 [2018-10-14 18:34:25,237 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2018-10-14 18:34:25,805 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2018-10-14 18:34:26,353 WARN L179 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2018-10-14 18:34:26,962 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 147 [2018-10-14 18:34:27,560 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 150 [2018-10-14 18:34:27,986 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-14 18:34:28,414 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2018-10-14 18:34:28,917 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 134 [2018-10-14 18:34:29,433 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-14 18:34:29,965 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2018-10-14 18:34:30,418 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-14 18:34:30,866 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2018-10-14 18:34:31,285 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-14 18:34:31,753 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2018-10-14 18:34:32,230 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-14 18:34:32,644 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-10-14 18:34:33,029 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-14 18:34:33,324 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:34:33,590 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:34:33,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:34:33,629 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-14 18:34:33,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 18:34:33,630 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 157 [2018-10-14 18:34:33,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:34:33,632 INFO L225 Difference]: With dead ends: 182 [2018-10-14 18:34:33,632 INFO L226 Difference]: Without dead ends: 182 [2018-10-14 18:34:33,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=1579, Invalid=6431, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 18:34:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-14 18:34:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-14 18:34:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-14 18:34:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-14 18:34:33,641 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-14 18:34:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:34:33,642 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-14 18:34:33,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 18:34:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-14 18:34:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-14 18:34:33,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:34:33,645 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] [2018-10-14 18:34:33,645 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:34:33,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:34:33,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1503531875, now seen corresponding path program 8 times [2018-10-14 18:34:33,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:34:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:34:34,569 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-14 18:34:34,795 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 18:34:35,023 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 18:34:35,258 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:34:35,514 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 18:34:35,826 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-14 18:34:36,154 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-14 18:34:36,456 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 18:34:36,757 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-14 18:34:37,005 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:34:37,350 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:34:37,595 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 18:34:37,961 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 18:34:38,173 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-14 18:34:38,378 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 18:34:38,586 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 18:34:38,797 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-14 18:34:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:34:41,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:34:41,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-14 18:34:41,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-14 18:34:41,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-14 18:34:41,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2018-10-14 18:34:41,096 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 53 states. [2018-10-14 18:34:42,932 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-14 18:34:43,302 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-14 18:34:43,727 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 18:34:44,293 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 18:34:44,719 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 18:34:45,047 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-14 18:34:45,443 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 18:34:45,818 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 18:34:46,367 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:34:46,741 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 18:34:47,214 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2018-10-14 18:34:47,777 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-14 18:34:48,402 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2018-10-14 18:34:49,145 WARN L179 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-14 18:34:49,808 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2018-10-14 18:34:50,275 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2018-10-14 18:34:50,835 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2018-10-14 18:34:51,477 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 160 [2018-10-14 18:34:52,105 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2018-10-14 18:34:52,830 WARN L179 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-14 18:34:53,295 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-14 18:34:53,789 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-14 18:34:54,347 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 154 [2018-10-14 18:34:54,963 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2018-10-14 18:34:55,612 WARN L179 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2018-10-14 18:34:56,087 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2018-10-14 18:34:56,590 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2018-10-14 18:34:57,086 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-10-14 18:34:57,611 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2018-10-14 18:34:58,148 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-14 18:34:58,589 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-14 18:34:59,037 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-14 18:34:59,506 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-14 18:34:59,993 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-14 18:35:00,552 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-14 18:35:00,978 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-14 18:35:01,493 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-14 18:35:01,809 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-14 18:35:02,095 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 18:35:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:35:02,140 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-14 18:35:02,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-14 18:35:02,140 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 170 [2018-10-14 18:35:02,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:35:02,142 INFO L225 Difference]: With dead ends: 195 [2018-10-14 18:35:02,142 INFO L226 Difference]: Without dead ends: 195 [2018-10-14 18:35:02,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=2016, Invalid=8084, Unknown=0, NotChecked=0, Total=10100 [2018-10-14 18:35:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-14 18:35:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-14 18:35:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 18:35:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-14 18:35:02,150 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-14 18:35:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:35:02,150 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-14 18:35:02,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-14 18:35:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-14 18:35:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-14 18:35:02,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:02,158 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] [2018-10-14 18:35:02,158 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:02,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:02,159 INFO L82 PathProgramCache]: Analyzing trace with hash -445726403, now seen corresponding path program 9 times [2018-10-14 18:35:02,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:03,040 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-14 18:35:03,358 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 18:35:03,674 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 18:35:03,913 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-14 18:35:04,154 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 18:35:04,400 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 18:35:04,659 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-14 18:35:04,993 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-14 18:35:05,326 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 65 [2018-10-14 18:35:05,627 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 18:35:05,952 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 18:35:06,286 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 18:35:06,681 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-14 18:35:06,923 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-14 18:35:07,193 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 18:35:07,458 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 18:35:07,709 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 18:35:08,008 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-14 18:35:08,201 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-10-14 18:35:08,584 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-14 18:35:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:11,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:35:11,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 18:35:11,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 18:35:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 18:35:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2939, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 18:35:11,944 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 56 states. [2018-10-14 18:35:14,001 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-14 18:35:14,421 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 18:35:14,936 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 18:35:15,636 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-14 18:35:16,148 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 18:35:16,565 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 18:35:17,057 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 18:35:17,774 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-14 18:35:18,447 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:35:18,935 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 18:35:19,587 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-10-14 18:35:20,036 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 18:35:20,717 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-14 18:35:21,383 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-14 18:35:21,921 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-14 18:35:22,304 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-14 18:35:22,732 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 18:35:23,392 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-14 18:35:24,058 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-14 18:35:24,512 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 18:35:24,877 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 18:35:25,289 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 18:35:25,665 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 18:35:26,403 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-14 18:35:26,859 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 18:35:27,224 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-14 18:35:27,611 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-14 18:35:28,186 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-14 18:35:28,763 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 18:35:29,175 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:35:29,509 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-14 18:35:29,907 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:35:30,435 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-14 18:35:31,192 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-10-14 18:35:31,782 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 152 [2018-10-14 18:35:32,161 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:35:32,541 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-14 18:35:33,040 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2018-10-14 18:35:33,590 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 18:35:33,956 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-14 18:35:34,271 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 18:35:34,646 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 18:35:35,308 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 18:35:35,630 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:35:36,336 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 18:35:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:35:36,435 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-14 18:35:36,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-14 18:35:36,436 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 183 [2018-10-14 18:35:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:35:36,438 INFO L225 Difference]: With dead ends: 208 [2018-10-14 18:35:36,438 INFO L226 Difference]: Without dead ends: 208 [2018-10-14 18:35:36,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2018-10-14 18:35:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-14 18:35:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-14 18:35:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-14 18:35:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-14 18:35:36,446 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-14 18:35:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:35:36,447 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-14 18:35:36,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 18:35:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-14 18:35:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-14 18:35:36,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:36,448 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] [2018-10-14 18:35:36,449 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:36,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:36,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1136453027, now seen corresponding path program 10 times [2018-10-14 18:35:36,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:38,039 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 18:35:38,483 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 18:35:38,938 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 18:35:39,389 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 18:35:39,831 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 18:35:40,287 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-14 18:35:40,731 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-14 18:35:41,233 WARN L179 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-14 18:35:41,782 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-14 18:35:42,384 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 18:35:42,870 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 18:35:43,373 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 18:35:43,920 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-14 18:35:44,314 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-14 18:35:44,695 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 18:35:45,089 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 18:35:45,471 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-14 18:35:45,901 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-14 18:35:46,232 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 18:35:46,514 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:35:46,791 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:35:47,065 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 18:35:47,434 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 18:35:47,669 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-14 18:35:47,892 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 18:35:48,115 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 18:35:48,337 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-14 18:35:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:50,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:35:50,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 18:35:50,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 18:35:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 18:35:50,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 18:35:50,979 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 63 states. [2018-10-14 18:35:52,470 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:35:52,933 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 18:35:53,389 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 18:35:53,923 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 18:35:54,433 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 18:35:54,819 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 18:35:55,247 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 18:35:55,684 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-14 18:35:56,202 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 18:35:56,649 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 18:35:57,236 WARN L179 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 187 [2018-10-14 18:35:57,956 WARN L179 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-14 18:35:58,729 WARN L179 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-14 18:35:59,597 WARN L179 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-14 18:36:00,456 WARN L179 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-14 18:36:01,055 WARN L179 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-14 18:36:01,710 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2018-10-14 18:36:02,433 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-14 18:36:03,299 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-14 18:36:04,145 WARN L179 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-14 18:36:04,739 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-14 18:36:05,393 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-14 18:36:06,107 WARN L179 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-14 18:36:06,849 WARN L179 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-14 18:36:07,618 WARN L179 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 188 [2018-10-14 18:36:08,263 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2018-10-14 18:36:08,890 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 170 [2018-10-14 18:36:09,558 WARN L179 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-14 18:36:10,276 WARN L179 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-14 18:36:11,021 WARN L179 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-14 18:36:11,600 WARN L179 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-14 18:36:12,197 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-14 18:36:12,899 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 173 [2018-10-14 18:36:13,595 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 176 [2018-10-14 18:36:14,308 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2018-10-14 18:36:14,865 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2018-10-14 18:36:15,441 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-14 18:36:16,048 WARN L179 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-14 18:36:16,684 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-14 18:36:17,339 WARN L179 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-14 18:36:17,909 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2018-10-14 18:36:18,527 WARN L179 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-14 18:36:19,114 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2018-10-14 18:36:19,721 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-14 18:36:20,332 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-14 18:36:20,858 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-14 18:36:21,402 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-14 18:36:21,790 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-14 18:36:22,151 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 18:36:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:36:22,175 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-14 18:36:22,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 18:36:22,176 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 196 [2018-10-14 18:36:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:36:22,177 INFO L225 Difference]: With dead ends: 221 [2018-10-14 18:36:22,177 INFO L226 Difference]: Without dead ends: 221 [2018-10-14 18:36:22,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=2873, Invalid=11647, Unknown=0, NotChecked=0, Total=14520 [2018-10-14 18:36:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-14 18:36:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-14 18:36:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-14 18:36:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-14 18:36:22,182 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-14 18:36:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:36:22,183 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-14 18:36:22,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 18:36:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-14 18:36:22,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-14 18:36:22,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:36:22,184 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] [2018-10-14 18:36:22,184 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:36:22,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:36:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1122473725, now seen corresponding path program 11 times [2018-10-14 18:36:22,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:36:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:36:24,105 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-14 18:36:24,718 WARN L179 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 18:36:25,340 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 18:36:25,971 WARN L179 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-14 18:36:26,606 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 18:36:27,242 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-14 18:36:27,872 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-14 18:36:28,649 WARN L179 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-14 18:36:29,422 WARN L179 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-14 18:36:30,143 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 18:36:30,862 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 18:36:31,577 WARN L179 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-14 18:36:32,240 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-14 18:36:32,785 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-14 18:36:33,387 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 18:36:33,981 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 18:36:34,525 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 18:36:35,028 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-14 18:36:35,351 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 18:36:35,661 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 18:36:35,978 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 18:36:36,286 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-14 18:36:36,641 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-14 18:36:36,890 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 18:36:37,138 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 18:36:37,386 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 18:36:37,622 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-14 18:36:37,906 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-14 18:36:38,489 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-14 18:36:38,714 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-10-14 18:36:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:36:41,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:36:41,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 18:36:41,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 18:36:41,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 18:36:41,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 18:36:41,706 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 67 states. [2018-10-14 18:36:44,324 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:36:44,835 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 18:36:45,427 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-14 18:36:46,281 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 18:36:46,891 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-14 18:36:47,364 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 18:36:47,930 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-14 18:36:48,849 WARN L179 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-14 18:36:49,977 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2018-10-14 18:36:50,961 WARN L179 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-14 18:36:51,580 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2018-10-14 18:36:52,299 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-14 18:36:53,114 WARN L179 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-14 18:36:54,245 WARN L179 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 212 [2018-10-14 18:36:55,180 WARN L179 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 215 [2018-10-14 18:36:55,837 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2018-10-14 18:36:56,578 WARN L179 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-14 18:36:57,474 WARN L179 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-14 18:36:58,430 WARN L179 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2018-10-14 18:36:59,546 WARN L179 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-14 18:37:00,200 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2018-10-14 18:37:00,880 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-14 18:37:01,648 WARN L179 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2018-10-14 18:37:02,478 WARN L179 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 199 [2018-10-14 18:37:03,355 WARN L179 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 202 [2018-10-14 18:37:03,987 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2018-10-14 18:37:04,698 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2018-10-14 18:37:05,504 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2018-10-14 18:37:06,415 WARN L179 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2018-10-14 18:37:07,352 WARN L179 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 209 [2018-10-14 18:37:07,995 WARN L179 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2018-10-14 18:37:08,655 WARN L179 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-14 18:37:09,432 WARN L179 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 185 [2018-10-14 18:37:10,195 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2018-10-14 18:37:10,981 WARN L179 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 191 [2018-10-14 18:37:11,606 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-14 18:37:12,256 WARN L179 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 174 [2018-10-14 18:37:12,966 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2018-10-14 18:37:13,732 WARN L179 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 187 [2018-10-14 18:37:14,556 WARN L179 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2018-10-14 18:37:15,177 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2018-10-14 18:37:15,801 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 168 [2018-10-14 18:37:16,472 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-14 18:37:17,194 WARN L179 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 177 [2018-10-14 18:37:17,929 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-14 18:37:18,536 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-14 18:37:19,114 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2018-10-14 18:37:19,774 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-14 18:37:20,449 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2018-10-14 18:37:21,116 WARN L179 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-14 18:37:21,699 WARN L179 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-14 18:37:22,275 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-10-14 18:37:22,713 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 18:37:23,106 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-14 18:37:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:37:23,176 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-14 18:37:23,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 18:37:23,177 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 209 [2018-10-14 18:37:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:37:23,179 INFO L225 Difference]: With dead ends: 234 [2018-10-14 18:37:23,179 INFO L226 Difference]: Without dead ends: 234 [2018-10-14 18:37:23,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3370 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=3233, Invalid=13537, Unknown=0, NotChecked=0, Total=16770 [2018-10-14 18:37:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-14 18:37:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-14 18:37:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-14 18:37:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-14 18:37:23,185 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-14 18:37:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:37:23,185 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-14 18:37:23,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 18:37:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-14 18:37:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-14 18:37:23,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:37:23,187 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] [2018-10-14 18:37:23,187 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:37:23,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:37:23,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2019387363, now seen corresponding path program 12 times [2018-10-14 18:37:23,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:37:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:37:25,898 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 393 DAG size of output: 74 [2018-10-14 18:37:26,937 WARN L179 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-14 18:37:28,023 WARN L179 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 73 [2018-10-14 18:37:29,126 WARN L179 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 76 [2018-10-14 18:37:30,299 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 388 DAG size of output: 73 [2018-10-14 18:37:31,394 WARN L179 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 73 [2018-10-14 18:37:32,506 WARN L179 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 71 [2018-10-14 18:37:33,728 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-14 18:37:35,103 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 411 DAG size of output: 82 [2018-10-14 18:37:36,338 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-14 18:37:37,551 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-14 18:37:38,728 WARN L179 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-14 18:37:39,960 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 293 DAG size of output: 73 [2018-10-14 18:37:40,827 WARN L179 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 74 [2018-10-14 18:37:41,674 WARN L179 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-14 18:37:42,526 WARN L179 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-14 18:37:43,380 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-14 18:37:44,283 WARN L179 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 70 [2018-10-14 18:37:44,824 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-14 18:37:45,413 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 18:37:45,934 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 18:37:46,460 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 18:37:47,037 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-14 18:37:47,450 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-14 18:37:47,868 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 18:37:48,286 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 18:37:48,690 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-14 18:37:49,160 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-14 18:37:49,452 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 18:37:49,753 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:37:50,072 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:37:50,442 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 18:37:50,732 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-14 18:37:50,982 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-14 18:37:51,231 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 18:37:51,476 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-14 18:37:51,719 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-14 18:37:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:37:55,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:37:55,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 18:37:55,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 18:37:55,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 18:37:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4652, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 18:37:55,061 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 73 states. [2018-10-14 18:37:57,559 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 18:37:57,967 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:37:58,575 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 18:37:59,278 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-14 18:38:00,230 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-14 18:38:00,943 WARN L179 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-14 18:38:01,484 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 18:38:02,138 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-14 18:38:02,750 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 18:38:03,587 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-14 18:38:04,184 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-14 18:38:04,912 WARN L179 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 214 [2018-10-14 18:38:05,841 WARN L179 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2018-10-14 18:38:06,800 WARN L179 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2018-10-14 18:38:07,997 WARN L179 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-14 18:38:09,113 WARN L179 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-14 18:38:09,923 WARN L179 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2018-10-14 18:38:10,880 WARN L179 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-14 18:38:11,869 WARN L179 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 239 [2018-10-14 18:38:12,879 WARN L179 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 242 [2018-10-14 18:38:13,952 WARN L179 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-14 18:38:14,655 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 209 [2018-10-14 18:38:15,455 WARN L179 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-14 18:38:16,423 WARN L179 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2018-10-14 18:38:17,340 WARN L179 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 216 [2018-10-14 18:38:18,316 WARN L179 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 219 [2018-10-14 18:38:19,032 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-14 18:38:19,807 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2018-10-14 18:38:20,659 WARN L179 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-14 18:38:21,657 WARN L179 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-14 18:38:22,636 WARN L179 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2018-10-14 18:38:23,348 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-14 18:38:24,105 WARN L179 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2018-10-14 18:38:24,938 WARN L179 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2018-10-14 18:38:25,824 WARN L179 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2018-10-14 18:38:26,796 WARN L179 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2018-10-14 18:38:27,512 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2018-10-14 18:38:28,271 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 186 [2018-10-14 18:38:29,083 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 197 [2018-10-14 18:38:29,958 WARN L179 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-14 18:38:30,845 WARN L179 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-14 18:38:31,647 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-14 18:38:32,381 WARN L179 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 180 [2018-10-14 18:38:33,187 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-14 18:38:34,054 WARN L179 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 194 [2018-10-14 18:38:34,948 WARN L179 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2018-10-14 18:38:35,639 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-14 18:38:36,408 WARN L179 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-14 18:38:37,150 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2018-10-14 18:38:37,924 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-14 18:38:38,691 WARN L179 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-14 18:38:39,354 WARN L179 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2018-10-14 18:38:40,058 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2018-10-14 18:38:40,773 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-10-14 18:38:41,611 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 177 [2018-10-14 18:38:42,368 WARN L179 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-14 18:38:43,018 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-14 18:38:43,698 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-14 18:38:44,188 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:38:44,636 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 18:38:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:38:44,715 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-14 18:38:44,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 18:38:44,720 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 222 [2018-10-14 18:38:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:38:44,722 INFO L225 Difference]: With dead ends: 247 [2018-10-14 18:38:44,722 INFO L226 Difference]: Without dead ends: 247 [2018-10-14 18:38:44,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 75.4s TimeCoverageRelationStatistics Valid=3886, Invalid=15854, Unknown=0, NotChecked=0, Total=19740 [2018-10-14 18:38:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-14 18:38:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-14 18:38:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-14 18:38:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-14 18:38:44,728 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-14 18:38:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:38:44,728 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-14 18:38:44,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 18:38:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-14 18:38:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-14 18:38:44,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:38:44,730 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:38:44,730 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:38:44,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:38:44,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1440957251, now seen corresponding path program 13 times [2018-10-14 18:38:44,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:38:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:38:46,505 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-14 18:38:48,107 WARN L179 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-14 18:38:49,612 WARN L179 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 18:38:51,125 WARN L179 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 18:38:52,767 WARN L179 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-14 18:38:54,291 WARN L179 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 18:38:55,838 WARN L179 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-14 18:38:57,441 WARN L179 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-14 18:38:59,243 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 559 DAG size of output: 88 [2018-10-14 18:39:01,081 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 572 DAG size of output: 90 [2018-10-14 18:39:02,904 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-14 18:39:04,656 WARN L179 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-14 18:39:06,447 WARN L179 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 554 DAG size of output: 83 [2018-10-14 18:39:08,003 WARN L179 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 398 DAG size of output: 81 [2018-10-14 18:39:09,291 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 385 DAG size of output: 82 [2018-10-14 18:39:10,485 WARN L179 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-14 18:39:11,690 WARN L179 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-14 18:39:12,978 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 380 DAG size of output: 77 [2018-10-14 18:39:14,133 WARN L179 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 75 [2018-10-14 18:39:14,888 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-14 18:39:15,643 WARN L179 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 18:39:16,392 WARN L179 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-14 18:39:17,189 WARN L179 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-14 18:39:17,927 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-14 18:39:18,512 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-14 18:39:19,100 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 18:39:19,678 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-14 18:39:20,255 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-14 18:39:20,794 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-14 18:39:21,137 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-14 18:39:21,479 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 18:39:21,857 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-14 18:39:22,235 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-14 18:39:22,690 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-14 18:39:22,972 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-14 18:39:23,238 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 18:39:23,512 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-14 18:39:23,780 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-14 18:39:24,089 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-14 18:39:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:39:28,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:39:28,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-14 18:39:28,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-14 18:39:28,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-14 18:39:28,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2018-10-14 18:39:28,768 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 77 states. [2018-10-14 18:39:31,401 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-14 18:39:31,850 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 18:39:32,566 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 18:39:33,380 WARN L179 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-14 18:39:34,448 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-14 18:39:35,231 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-14 18:39:35,821 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 18:39:36,560 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-14 18:39:37,699 WARN L179 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-14 18:39:39,163 WARN L179 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 242 [2018-10-14 18:39:40,394 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 261 DAG size of output: 245 [2018-10-14 18:39:41,242 WARN L179 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2018-10-14 18:39:42,193 WARN L179 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 229 [2018-10-14 18:39:43,378 WARN L179 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 236 [2018-10-14 18:39:44,731 WARN L179 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 239 [2018-10-14 18:39:45,995 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 264 DAG size of output: 242 [2018-10-14 18:39:46,805 WARN L179 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-14 18:39:47,715 WARN L179 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2018-10-14 18:39:48,904 WARN L179 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 260 [2018-10-14 18:39:50,350 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 281 DAG size of output: 261 [2018-10-14 18:39:51,681 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 287 DAG size of output: 264 [2018-10-14 18:39:52,450 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 224 [2018-10-14 18:39:53,444 WARN L179 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-14 18:39:54,483 WARN L179 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 230 [2018-10-14 18:39:55,783 WARN L179 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 233 [2018-10-14 18:39:56,992 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 261 DAG size of output: 236 [2018-10-14 18:39:57,839 WARN L179 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 225 [2018-10-14 18:39:58,857 WARN L179 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-14 18:40:00,031 WARN L179 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 246 [2018-10-14 18:40:01,229 WARN L179 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 247 [2018-10-14 18:40:02,466 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 275 DAG size of output: 250 [2018-10-14 18:40:03,367 WARN L179 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 219 [2018-10-14 18:40:04,264 WARN L179 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 213 [2018-10-14 18:40:05,249 WARN L179 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 218 [2018-10-14 18:40:06,320 WARN L179 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2018-10-14 18:40:07,418 WARN L179 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 224 [2018-10-14 18:40:08,219 WARN L179 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 213 [2018-10-14 18:40:09,124 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-14 18:40:10,184 WARN L179 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 228 [2018-10-14 18:40:11,361 WARN L179 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 229 [2018-10-14 18:40:12,541 WARN L179 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 232 [2018-10-14 18:40:13,366 WARN L179 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 207 [2018-10-14 18:40:14,214 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2018-10-14 18:40:15,121 WARN L179 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2018-10-14 18:40:16,123 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-10-14 18:40:17,168 WARN L179 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 212 [2018-10-14 18:40:17,961 WARN L179 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 201 [2018-10-14 18:40:18,771 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-14 18:40:19,651 WARN L179 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 206 [2018-10-14 18:40:20,604 WARN L179 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 209 [2018-10-14 18:40:21,580 WARN L179 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 212 [2018-10-14 18:40:22,368 WARN L179 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-14 18:40:23,145 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-14 18:40:24,042 WARN L179 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-14 18:40:24,909 WARN L179 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-14 18:40:25,799 WARN L179 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2018-10-14 18:40:26,543 WARN L179 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2018-10-14 18:40:27,275 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-14 18:40:28,044 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-14 18:40:28,859 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2018-10-14 18:40:29,690 WARN L179 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-14 18:40:30,406 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-14 18:40:31,156 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-14 18:40:31,690 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 18:40:32,197 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 18:40:32,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:40:32,280 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-14 18:40:32,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-14 18:40:32,281 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 235 [2018-10-14 18:40:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:40:32,282 INFO L225 Difference]: With dead ends: 260 [2018-10-14 18:40:32,283 INFO L226 Difference]: Without dead ends: 260 [2018-10-14 18:40:32,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 99.8s TimeCoverageRelationStatistics Valid=3811, Invalid=18539, Unknown=0, NotChecked=0, Total=22350 [2018-10-14 18:40:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-14 18:40:32,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 249. [2018-10-14 18:40:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-14 18:40:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-14 18:40:32,289 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 235 [2018-10-14 18:40:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:40:32,290 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-14 18:40:32,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-14 18:40:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-14 18:40:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-14 18:40:32,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:40:32,291 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:40:32,291 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:40:32,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:40:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1547462109, now seen corresponding path program 14 times [2018-10-14 18:40:32,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:40:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:40:37,440 WARN L179 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 808 DAG size of output: 86 [2018-10-14 18:40:40,257 WARN L179 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-14 18:40:42,869 WARN L179 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-14 18:40:45,574 WARN L179 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 806 DAG size of output: 86 [2018-10-14 18:40:48,258 WARN L179 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-14 18:40:50,996 WARN L179 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-14 18:40:53,613 WARN L179 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 801 DAG size of output: 81 [2018-10-14 18:40:56,503 WARN L179 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 815 DAG size of output: 94 [2018-10-14 18:40:59,509 WARN L179 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 828 DAG size of output: 96 [2018-10-14 18:41:02,395 WARN L179 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 812 DAG size of output: 91 [2018-10-14 18:41:05,377 WARN L179 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 812 DAG size of output: 91 [2018-10-14 18:41:08,220 WARN L179 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 810 DAG size of output: 89 [2018-10-14 18:41:10,481 WARN L179 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 576 DAG size of output: 87 [2018-10-14 18:41:12,415 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 558 DAG size of output: 88 [2018-10-14 18:41:14,338 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-14 18:41:16,330 WARN L179 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-14 18:41:18,240 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 553 DAG size of output: 83 [2018-10-14 18:41:20,097 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 434 DAG size of output: 84 [2018-10-14 18:41:21,360 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-14 18:41:22,606 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-14 18:41:23,863 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-14 18:41:25,108 WARN L179 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-14 18:41:26,342 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 293 DAG size of output: 73 [2018-10-14 18:41:27,228 WARN L179 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 74 [2018-10-14 18:41:28,142 WARN L179 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-14 18:41:29,031 WARN L179 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-14 18:41:29,916 WARN L179 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-14 18:41:30,900 WARN L179 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 70 [2018-10-14 18:41:31,452 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-14 18:41:32,012 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 18:41:32,579 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-14 18:41:33,147 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-14 18:41:33,740 WARN L179 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-14 18:41:34,197 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-14 18:41:34,634 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 18:41:35,077 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-14 18:41:35,536 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-14 18:41:36,034 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-14 18:41:36,352 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 18:41:36,672 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:41:37,000 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-14 18:41:37,309 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-14 18:41:37,632 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47