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/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 18:16:56,864 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 18:16:56,866 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 18:16:56,878 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 18:16:56,878 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 18:16:56,879 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 18:16:56,880 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 18:16:56,884 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 18:16:56,886 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 18:16:56,886 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 18:16:56,887 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 18:16:56,888 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 18:16:56,889 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 18:16:56,890 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 18:16:56,891 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 18:16:56,892 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 18:16:56,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 18:16:56,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 18:16:56,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 18:16:56,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 18:16:56,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 18:16:56,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 18:16:56,903 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 18:16:56,903 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 18:16:56,903 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 18:16:56,904 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 18:16:56,905 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 18:16:56,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 18:16:56,907 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 18:16:56,908 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 18:16:56,908 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 18:16:56,909 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-14 18:16:56,909 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-14 18:16:56,912 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-14 18:16:56,913 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-14 18:16:56,913 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-14 18:16:56,914 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 18:16:56,935 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 18:16:56,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 18:16:56,938 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 18:16:56,938 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 18:16:56,939 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 18:16:56,939 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 18:16:56,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 18:16:56,940 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 18:16:56,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 18:16:56,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 18:16:56,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 18:16:56,940 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 18:16:56,941 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 18:16:56,941 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 18:16:56,942 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 18:16:56,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 18:16:57,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 18:16:57,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 18:16:57,022 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 18:16:57,023 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 18:16:57,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-14 18:16:57,024 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-14 18:16:57,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 18:16:57,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-14 18:16:57,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 18:16:57,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 18:16:57,119 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 18:16:57,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 18:16:57,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 18:16:57,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 18:16:57,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 18:16:57,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (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 18:16:57,259 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 18:16:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 18:16:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 18:16:57,891 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 18:16:57,892 INFO L202 PluginConnector]: Adding new model cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:57 BoogieIcfgContainer [2018-10-14 18:16:57,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 18:16:57,892 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-14 18:16:57,892 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-14 18:16:57,893 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-14 18:16:57,896 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:57" (1/1) ... [2018-10-14 18:16:57,903 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-14 18:16:57,903 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-14 18:16:57,942 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-14 18:16:57,992 INFO L219 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-14 18:16:58,007 INFO L282 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-14 18:16:58,075 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-14 18:17:23,294 INFO L315 AbstractInterpreter]: Visited 80 different actions 97 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 18:17:23,297 INFO L306 apSepIcfgTransformer]: finished equality analysis [2018-10-14 18:17:23,301 INFO L318 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-14 18:17:23,427 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 18:17:23,494 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 18:17:23,495 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-14 18:17:23,496 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-14 18:17:23,496 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-14 18:17:23,496 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-14 18:17:23,496 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-14 18:17:23,496 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-14 18:17:23,497 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-14 18:17:23,497 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-14 18:17:23,497 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-14 18:17:23,497 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-14 18:17:23,497 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-14 18:17:23,498 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-14 18:17:23,498 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-14 18:17:23,498 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-14 18:17:23,498 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-14 18:17:23,500 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-14 18:17:23,528 INFO L202 PluginConnector]: Adding new model cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.10 06:17:23 BasicIcfg [2018-10-14 18:17:23,528 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-14 18:17:23,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 18:17:23,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 18:17:23,534 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 18:17:23,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:16:57" (1/3) ... [2018-10-14 18:17:23,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e6986e and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:17:23, skipping insertion in model container [2018-10-14 18:17:23,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:57" (2/3) ... [2018-10-14 18:17:23,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e6986e and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:17:23, skipping insertion in model container [2018-10-14 18:17:23,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.10 06:17:23" (3/3) ... [2018-10-14 18:17:23,538 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-14 18:17:23,548 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 18:17:23,556 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 18:17:23,573 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 18:17:23,596 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 18:17:23,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 18:17:23,597 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 18:17:23,597 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 18:17:23,597 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 18:17:23,597 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 18:17:23,598 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 18:17:23,598 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 18:17:23,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 18:17:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-10-14 18:17:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-14 18:17:23,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:17:23,620 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:17:23,621 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:17:23,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:17:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash -727932232, now seen corresponding path program 1 times [2018-10-14 18:17:23,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:17:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:17:24,160 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 18:17:24,754 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 18:17:24,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 18:17:24,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-14 18:17:24,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 18:17:24,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 18:17:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-14 18:17:24,888 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 12 states. [2018-10-14 18:17:25,739 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 18:17:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:17:26,167 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-14 18:17:26,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 18:17:26,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-10-14 18:17:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:17:26,181 INFO L225 Difference]: With dead ends: 92 [2018-10-14 18:17:26,181 INFO L226 Difference]: Without dead ends: 92 [2018-10-14 18:17:26,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-14 18:17:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-14 18:17:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2018-10-14 18:17:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-14 18:17:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-14 18:17:26,225 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 67 [2018-10-14 18:17:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:17:26,226 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-14 18:17:26,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 18:17:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-14 18:17:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-14 18:17:26,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:17:26,229 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:17:26,230 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:17:26,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:17:26,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1648148748, now seen corresponding path program 1 times [2018-10-14 18:17:26,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:17:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:17:26,972 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 18:17:26,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:17:26,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 18:17:26,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 18:17:26,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 18:17:26,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-14 18:17:26,976 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 22 states. [2018-10-14 18:17:28,608 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-14 18:17:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:17:28,957 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-14 18:17:28,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 18:17:28,964 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2018-10-14 18:17:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:17:28,966 INFO L225 Difference]: With dead ends: 105 [2018-10-14 18:17:28,966 INFO L226 Difference]: Without dead ends: 105 [2018-10-14 18:17:28,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 18:17:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-14 18:17:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2018-10-14 18:17:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-14 18:17:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-14 18:17:28,977 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 80 [2018-10-14 18:17:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:17:28,977 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-14 18:17:28,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 18:17:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-14 18:17:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-14 18:17:28,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:17:28,979 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:17:28,980 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:17:28,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:17:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash 318999352, now seen corresponding path program 2 times [2018-10-14 18:17:28,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:17:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:17:29,575 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-10-14 18:17:29,825 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-14 18:17:30,283 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 18:17:30,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:17:30,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 18:17:30,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 18:17:30,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 18:17:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2018-10-14 18:17:30,285 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 27 states. [2018-10-14 18:17:31,922 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-14 18:17:33,296 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-14 18:17:34,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:17:34,636 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-14 18:17:34,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-14 18:17:34,636 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2018-10-14 18:17:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:17:34,638 INFO L225 Difference]: With dead ends: 118 [2018-10-14 18:17:34,638 INFO L226 Difference]: Without dead ends: 118 [2018-10-14 18:17:34,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2018-10-14 18:17:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-14 18:17:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2018-10-14 18:17:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-14 18:17:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-14 18:17:34,649 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 93 [2018-10-14 18:17:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:17:34,649 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-14 18:17:34,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 18:17:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-14 18:17:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 18:17:34,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:17:34,651 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:17:34,652 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:17:34,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:17:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash 657696908, now seen corresponding path program 3 times [2018-10-14 18:17:34,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:17:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:17:36,070 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 18:17:36,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:17:36,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 18:17:36,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 18:17:36,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 18:17:36,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1046, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 18:17:36,072 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 34 states. [2018-10-14 18:17:37,596 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-14 18:17:37,825 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-10-14 18:17:38,093 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 18:17:39,367 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-14 18:17:39,599 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-14 18:17:41,104 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-14 18:17:41,413 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 18:17:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:17:42,197 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-14 18:17:42,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-14 18:17:42,198 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 106 [2018-10-14 18:17:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:17:42,201 INFO L225 Difference]: With dead ends: 131 [2018-10-14 18:17:42,201 INFO L226 Difference]: Without dead ends: 131 [2018-10-14 18:17:42,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=711, Invalid=4691, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 18:17:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-14 18:17:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2018-10-14 18:17:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-14 18:17:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-14 18:17:42,211 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 106 [2018-10-14 18:17:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:17:42,211 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-14 18:17:42,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 18:17:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-14 18:17:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-14 18:17:42,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:17:42,214 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:17:42,214 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:17:42,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:17:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1650404424, now seen corresponding path program 4 times [2018-10-14 18:17:42,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:17:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:17:42,906 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-14 18:17:43,116 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-14 18:17:44,362 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 18:17:44,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:17:44,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 18:17:44,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 18:17:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 18:17:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1393, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 18:17:44,365 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 39 states. [2018-10-14 18:17:46,675 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-14 18:17:46,930 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:17:47,496 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 18:17:47,755 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-14 18:17:48,047 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2018-10-14 18:17:48,397 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 113 [2018-10-14 18:17:48,601 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:17:48,767 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-14 18:17:49,077 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2018-10-14 18:17:49,499 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2018-10-14 18:17:49,940 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 112 [2018-10-14 18:17:50,220 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2018-10-14 18:17:50,545 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2018-10-14 18:17:50,756 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:17:51,170 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2018-10-14 18:17:51,564 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2018-10-14 18:17:51,764 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:17:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:17:53,878 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-14 18:17:53,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-14 18:17:53,879 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 119 [2018-10-14 18:17:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:17:53,881 INFO L225 Difference]: With dead ends: 144 [2018-10-14 18:17:53,881 INFO L226 Difference]: Without dead ends: 144 [2018-10-14 18:17:53,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=854, Invalid=6286, Unknown=0, NotChecked=0, Total=7140 [2018-10-14 18:17:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-14 18:17:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2018-10-14 18:17:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-14 18:17:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-14 18:17:53,893 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 119 [2018-10-14 18:17:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:17:53,894 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-14 18:17:53,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 18:17:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-14 18:17:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-14 18:17:53,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:17:53,896 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:17:53,897 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:17:53,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:17:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash -749719540, now seen corresponding path program 5 times [2018-10-14 18:17:53,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:17:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:17:56,687 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 18:17:56,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:17:56,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 18:17:56,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 18:17:56,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 18:17:56,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2018, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 18:17:56,689 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 47 states. [2018-10-14 18:17:57,822 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-10-14 18:17:59,580 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-14 18:17:59,919 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:18:00,359 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 18:18:00,672 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:18:01,047 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2018-10-14 18:18:01,522 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2018-10-14 18:18:01,798 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-14 18:18:02,014 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-14 18:18:02,320 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-14 18:18:02,735 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-14 18:18:03,008 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-14 18:18:03,363 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2018-10-14 18:18:03,790 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 140 [2018-10-14 18:18:04,294 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-14 18:18:04,630 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2018-10-14 18:18:05,034 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-14 18:18:05,812 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2018-10-14 18:18:06,262 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-14 18:18:06,598 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-14 18:18:06,964 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2018-10-14 18:18:07,396 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2018-10-14 18:18:07,935 WARN L179 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2018-10-14 18:18:08,310 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2018-10-14 18:18:08,684 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-14 18:18:09,072 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2018-10-14 18:18:09,374 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2018-10-14 18:18:09,757 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2018-10-14 18:18:10,092 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-14 18:18:10,386 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2018-10-14 18:18:10,686 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-14 18:18:11,039 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-14 18:18:11,245 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:18:11,436 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:18:11,652 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 18:18:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:18:11,692 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-14 18:18:11,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 18:18:11,693 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 132 [2018-10-14 18:18:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:18:11,695 INFO L225 Difference]: With dead ends: 157 [2018-10-14 18:18:11,695 INFO L226 Difference]: Without dead ends: 157 [2018-10-14 18:18:11,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1304, Invalid=8596, Unknown=0, NotChecked=0, Total=9900 [2018-10-14 18:18:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-14 18:18:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2018-10-14 18:18:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-14 18:18:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-14 18:18:11,712 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 132 [2018-10-14 18:18:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:18:11,713 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-14 18:18:11,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 18:18:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-14 18:18:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-14 18:18:11,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:18:11,716 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:18:11,716 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:18:11,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:18:11,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1664908344, now seen corresponding path program 6 times [2018-10-14 18:18:11,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:18:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:18:12,518 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2018-10-14 18:18:12,799 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-10-14 18:18:12,928 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:18:13,055 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:18:13,184 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:18:13,465 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:18:13,601 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:18:16,717 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 18:18:16,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:18:16,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 18:18:16,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 18:18:16,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 18:18:16,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2496, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 18:18:16,719 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 52 states. [2018-10-14 18:18:19,467 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 18:18:19,783 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 18:18:20,125 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 18:18:20,730 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:18:21,131 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 18:18:21,725 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 142 [2018-10-14 18:18:22,296 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2018-10-14 18:18:22,642 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-14 18:18:22,964 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 18:18:23,479 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2018-10-14 18:18:24,152 WARN L179 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2018-10-14 18:18:24,723 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 155 [2018-10-14 18:18:25,154 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2018-10-14 18:18:25,668 WARN L179 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 165 [2018-10-14 18:18:26,171 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2018-10-14 18:18:26,565 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 138 [2018-10-14 18:18:27,127 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-14 18:18:27,905 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2018-10-14 18:18:28,545 WARN L179 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2018-10-14 18:18:28,994 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-14 18:18:29,502 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 159 [2018-10-14 18:18:30,032 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 157 [2018-10-14 18:18:30,443 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-14 18:18:30,945 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2018-10-14 18:18:31,457 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 149 [2018-10-14 18:18:31,986 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 152 [2018-10-14 18:18:32,437 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 138 [2018-10-14 18:18:32,916 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 151 [2018-10-14 18:18:33,423 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-14 18:18:33,803 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-14 18:18:34,236 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-14 18:18:34,711 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-14 18:18:35,178 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-14 18:18:35,587 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 131 [2018-10-14 18:18:36,044 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2018-10-14 18:18:36,455 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-14 18:18:36,849 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-14 18:18:37,323 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-14 18:18:37,590 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 18:18:37,837 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 18:18:38,154 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-14 18:18:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:18:38,214 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-14 18:18:38,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-14 18:18:38,214 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 145 [2018-10-14 18:18:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:18:38,216 INFO L225 Difference]: With dead ends: 170 [2018-10-14 18:18:38,216 INFO L226 Difference]: Without dead ends: 170 [2018-10-14 18:18:38,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=1574, Invalid=10636, Unknown=0, NotChecked=0, Total=12210 [2018-10-14 18:18:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-14 18:18:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2018-10-14 18:18:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-14 18:18:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-14 18:18:38,226 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 145 [2018-10-14 18:18:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:18:38,226 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-14 18:18:38,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 18:18:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-14 18:18:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-14 18:18:38,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:18:38,229 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:18:38,229 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:18:38,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:18:38,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1127590004, now seen corresponding path program 7 times [2018-10-14 18:18:38,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:18:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:18:38,890 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 18:18:39,474 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-14 18:18:39,716 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:18:39,920 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:18:40,122 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:18:40,338 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-14 18:18:40,584 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:18:40,789 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:18:41,009 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 18:18:41,249 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 18:18:41,532 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-14 18:18:41,852 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-14 18:18:42,131 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 18:18:42,416 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 18:18:42,704 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-14 18:18:42,944 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-14 18:18:43,271 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-14 18:18:44,089 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-14 18:18:46,293 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 18:18:46,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:18:46,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 18:18:46,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 18:18:46,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 18:18:46,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=3055, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 18:18:46,295 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 57 states. [2018-10-14 18:18:47,062 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-14 18:18:49,488 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-14 18:18:49,832 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 18:18:50,257 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 18:18:50,927 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-14 18:18:51,419 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 18:18:52,010 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 159 [2018-10-14 18:18:52,720 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 188 [2018-10-14 18:18:53,155 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 18:18:53,508 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:18:54,148 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-14 18:18:55,010 WARN L179 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-14 18:18:55,707 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-14 18:18:56,286 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 164 [2018-10-14 18:18:56,986 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 197 [2018-10-14 18:18:57,409 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 18:18:57,800 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-14 18:18:58,200 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 18:18:58,931 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 18:18:59,389 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:18:59,735 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 18:19:00,157 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 18:19:00,563 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-14 18:19:00,866 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 18:19:01,479 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2018-10-14 18:19:02,333 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-14 18:19:02,993 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-14 18:19:03,322 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-14 18:19:03,736 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 18:19:04,143 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 18:19:04,443 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-14 18:19:04,782 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 18:19:05,346 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 18:19:05,714 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-14 18:19:06,038 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-14 18:19:06,401 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-14 18:19:06,754 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-14 18:19:07,044 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:19:07,542 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-14 18:19:08,255 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-10-14 18:19:08,621 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-14 18:19:09,005 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:19:09,330 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:19:09,646 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:19:09,910 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:19:10,553 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-14 18:19:10,875 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-14 18:19:11,132 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:19:11,446 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-14 18:19:12,081 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-14 18:19:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:19:12,176 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-14 18:19:12,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-14 18:19:12,177 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 158 [2018-10-14 18:19:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:19:12,179 INFO L225 Difference]: With dead ends: 183 [2018-10-14 18:19:12,179 INFO L226 Difference]: Without dead ends: 183 [2018-10-14 18:19:12,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=1355, Invalid=13897, Unknown=0, NotChecked=0, Total=15252 [2018-10-14 18:19:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-14 18:19:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2018-10-14 18:19:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-14 18:19:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-14 18:19:12,189 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 158 [2018-10-14 18:19:12,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:19:12,190 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-14 18:19:12,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 18:19:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-14 18:19:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-14 18:19:12,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:19:12,192 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:19:12,193 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:19:12,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:19:12,193 INFO L82 PathProgramCache]: Analyzing trace with hash -392264520, now seen corresponding path program 8 times [2018-10-14 18:19:12,194 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:19:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:19:13,574 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-14 18:19:13,955 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:19:14,368 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:19:14,700 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:19:15,063 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-14 18:19:15,501 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:19:15,839 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:19:16,171 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 18:19:16,551 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 18:19:16,944 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-14 18:19:17,366 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-14 18:19:17,751 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-14 18:19:18,142 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-14 18:19:18,512 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 18:19:18,882 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 18:19:19,350 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:19:19,651 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-14 18:19:20,118 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 18:19:20,424 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 18:19:20,727 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 18:19:20,975 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 18:19:21,261 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-14 18:19:21,451 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-14 18:19:25,095 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 18:19:25,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:19:25,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 18:19:25,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 18:19:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 18:19:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3753, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 18:19:25,097 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 63 states. [2018-10-14 18:19:28,217 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-14 18:19:28,608 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-14 18:19:29,018 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:19:29,640 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 18:19:30,487 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-14 18:19:31,137 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-14 18:19:31,848 WARN L179 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 180 [2018-10-14 18:19:32,722 WARN L179 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 214 [2018-10-14 18:19:33,243 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2018-10-14 18:19:33,636 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 18:19:34,435 WARN L179 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2018-10-14 18:19:35,546 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 197 [2018-10-14 18:19:36,394 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 200 [2018-10-14 18:19:37,095 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 186 [2018-10-14 18:19:37,947 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 225 [2018-10-14 18:19:38,453 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 18:19:38,837 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-14 18:19:39,637 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 197 [2018-10-14 18:19:40,469 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-14 18:19:40,998 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-14 18:19:41,407 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-14 18:19:41,901 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-14 18:19:42,378 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-14 18:19:42,741 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 18:19:43,213 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-14 18:19:43,958 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-14 18:19:44,479 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 18:19:44,956 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-14 18:19:45,423 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-14 18:19:45,893 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-14 18:19:46,239 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 18:19:46,908 WARN L179 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2018-10-14 18:19:47,893 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2018-10-14 18:19:48,632 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2018-10-14 18:19:49,036 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-14 18:19:49,494 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 18:19:49,989 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-14 18:19:50,335 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:19:50,734 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 18:19:51,407 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 18:19:51,837 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 18:19:52,204 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 18:19:52,618 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 18:19:53,020 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 18:19:53,336 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 18:19:53,904 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 162 [2018-10-14 18:19:54,530 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-14 18:19:54,987 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 18:19:55,400 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:19:55,777 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 18:19:56,135 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 18:19:56,446 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-14 18:19:57,196 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 18:19:57,557 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-14 18:19:57,864 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-14 18:19:58,254 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 18:19:59,029 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 18:19:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:19:59,147 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-14 18:19:59,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-14 18:19:59,148 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 171 [2018-10-14 18:19:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:19:59,150 INFO L225 Difference]: With dead ends: 196 [2018-10-14 18:19:59,150 INFO L226 Difference]: Without dead ends: 196 [2018-10-14 18:19:59,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=1522, Invalid=17110, Unknown=0, NotChecked=0, Total=18632 [2018-10-14 18:19:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-14 18:19:59,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2018-10-14 18:19:59,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-14 18:19:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-14 18:19:59,156 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 171 [2018-10-14 18:19:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:19:59,157 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-14 18:19:59,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 18:19:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-14 18:19:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-14 18:19:59,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:19:59,159 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:19:59,160 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:19:59,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:19:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1675239180, now seen corresponding path program 9 times [2018-10-14 18:19:59,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:19:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:20:00,192 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-14 18:20:01,344 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2018-10-14 18:20:01,919 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:20:02,381 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:20:02,834 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:20:03,307 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-14 18:20:03,836 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:20:04,300 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:20:04,746 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-14 18:20:05,278 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-14 18:20:05,833 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-14 18:20:06,386 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2018-10-14 18:20:06,910 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 18:20:07,411 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 18:20:07,911 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 18:20:08,469 WARN L179 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 18:20:09,020 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 18:20:09,435 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-14 18:20:09,854 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 18:20:10,335 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 18:20:10,747 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:20:11,107 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-14 18:20:11,477 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 18:20:11,761 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 18:20:12,035 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 18:20:12,308 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 18:20:12,579 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:20:12,834 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:20:13,101 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 18:20:16,550 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 18:20:16,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:20:16,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-14 18:20:16,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-14 18:20:16,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-14 18:20:16,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=4578, Unknown=0, NotChecked=0, Total=4970 [2018-10-14 18:20:16,552 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 71 states. [2018-10-14 18:20:20,065 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-14 18:20:20,591 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-14 18:20:21,117 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 18:20:21,726 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-14 18:20:22,690 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-14 18:20:23,381 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-14 18:20:24,211 WARN L179 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 205 [2018-10-14 18:20:25,237 WARN L179 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 244 [2018-10-14 18:20:25,912 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-14 18:20:26,356 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 18:20:26,871 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-14 18:20:27,639 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-14 18:20:28,202 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 18:20:28,916 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2018-10-14 18:20:29,746 WARN L179 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 253 [2018-10-14 18:20:30,684 WARN L179 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-10-14 18:20:31,470 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-14 18:20:32,430 WARN L179 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-14 18:20:33,685 WARN L179 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2018-10-14 18:20:34,752 WARN L179 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 231 [2018-10-14 18:20:35,469 WARN L179 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 207 [2018-10-14 18:20:36,364 WARN L179 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 246 [2018-10-14 18:20:37,252 WARN L179 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2018-10-14 18:20:37,988 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-14 18:20:38,865 WARN L179 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-14 18:20:39,799 WARN L179 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2018-10-14 18:20:40,749 WARN L179 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 226 [2018-10-14 18:20:41,492 WARN L179 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2018-10-14 18:20:42,296 WARN L179 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 234 [2018-10-14 18:20:43,115 WARN L179 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-14 18:20:43,820 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 200 [2018-10-14 18:20:44,649 WARN L179 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-14 18:20:45,574 WARN L179 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2018-10-14 18:20:46,588 WARN L179 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 216 [2018-10-14 18:20:47,246 WARN L179 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2018-10-14 18:20:48,017 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2018-10-14 18:20:48,817 WARN L179 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 221 [2018-10-14 18:20:49,506 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2018-10-14 18:20:50,313 WARN L179 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-14 18:20:51,179 WARN L179 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-14 18:20:52,076 WARN L179 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2018-10-14 18:20:52,728 WARN L179 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2018-10-14 18:20:53,487 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2018-10-14 18:20:54,263 WARN L179 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2018-10-14 18:20:54,932 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2018-10-14 18:20:55,632 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-14 18:20:56,439 WARN L179 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-14 18:20:57,219 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-14 18:20:57,874 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 181 [2018-10-14 18:20:58,577 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-14 18:20:59,300 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2018-10-14 18:20:59,971 WARN L179 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-14 18:21:00,658 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-14 18:21:01,361 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-14 18:21:02,111 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2018-10-14 18:21:02,731 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-14 18:21:03,385 WARN L179 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-14 18:21:04,081 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-14 18:21:04,718 WARN L179 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2018-10-14 18:21:05,345 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 173 [2018-10-14 18:21:06,046 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-14 18:21:06,533 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:21:07,002 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 18:21:07,451 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 18:21:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:21:07,526 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-14 18:21:07,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-14 18:21:07,526 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 184 [2018-10-14 18:21:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:21:07,528 INFO L225 Difference]: With dead ends: 209 [2018-10-14 18:21:07,528 INFO L226 Difference]: Without dead ends: 209 [2018-10-14 18:21:07,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 63.1s TimeCoverageRelationStatistics Valid=3138, Invalid=19814, Unknown=0, NotChecked=0, Total=22952 [2018-10-14 18:21:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-14 18:21:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-14 18:21:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-14 18:21:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-14 18:21:07,534 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 184 [2018-10-14 18:21:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:21:07,534 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-14 18:21:07,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-14 18:21:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-14 18:21:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-14 18:21:07,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:21:07,537 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:21:07,537 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:21:07,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:21:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash -930157256, now seen corresponding path program 10 times [2018-10-14 18:21:07,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:21:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:21:09,275 WARN L179 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2018-10-14 18:21:09,875 WARN L179 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:21:10,489 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:21:11,107 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:21:11,815 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-14 18:21:12,550 WARN L179 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:21:13,179 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:21:13,803 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-14 18:21:14,430 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-14 18:21:15,113 WARN L179 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-14 18:21:15,837 WARN L179 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2018-10-14 18:21:16,514 WARN L179 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-14 18:21:17,290 WARN L179 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-14 18:21:17,950 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 18:21:18,620 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 18:21:19,282 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:21:19,820 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-14 18:21:20,353 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 18:21:20,894 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-14 18:21:21,427 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 18:21:21,982 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-14 18:21:22,555 WARN L179 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 18:21:22,951 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-14 18:21:23,326 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 18:21:23,708 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 18:21:24,091 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 18:21:24,472 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 18:21:24,855 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-14 18:21:25,175 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-14 18:21:25,464 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 18:21:25,755 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-14 18:21:26,029 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:21:26,305 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:21:26,602 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 18:21:27,247 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:21:30,356 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 18:21:30,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:21:30,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 18:21:30,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 18:21:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 18:21:30,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 18:21:30,357 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 76 states. [2018-10-14 18:21:33,475 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:21:34,488 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-14 18:21:35,029 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 18:21:35,629 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 18:21:36,336 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2018-10-14 18:21:37,501 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-10-14 18:21:38,330 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2018-10-14 18:21:39,316 WARN L179 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 222 [2018-10-14 18:21:40,516 WARN L179 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 266 [2018-10-14 18:21:41,232 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2018-10-14 18:21:41,773 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-14 18:21:42,885 WARN L179 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-14 18:21:44,250 WARN L179 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 240 [2018-10-14 18:21:45,369 WARN L179 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 243 [2018-10-14 18:21:46,178 WARN L179 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 230 [2018-10-14 18:21:47,121 WARN L179 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 277 [2018-10-14 18:21:48,270 WARN L179 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 273 [2018-10-14 18:21:49,084 WARN L179 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 226 [2018-10-14 18:21:50,233 WARN L179 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 250 [2018-10-14 18:21:51,638 WARN L179 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 253 [2018-10-14 18:21:52,910 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 264 DAG size of output: 256 [2018-10-14 18:21:53,743 WARN L179 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 230 [2018-10-14 18:21:54,724 WARN L179 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 271 [2018-10-14 18:21:55,836 WARN L179 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 269 [2018-10-14 18:21:56,689 WARN L179 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2018-10-14 18:21:57,822 WARN L179 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 245 [2018-10-14 18:21:58,951 WARN L179 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 248 [2018-10-14 18:22:00,082 WARN L179 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 251 [2018-10-14 18:22:00,871 WARN L179 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-14 18:22:01,801 WARN L179 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 259 [2018-10-14 18:22:02,762 WARN L179 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 257 [2018-10-14 18:22:03,648 WARN L179 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2018-10-14 18:22:04,666 WARN L179 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 235 [2018-10-14 18:22:05,734 WARN L179 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 238 [2018-10-14 18:22:06,855 WARN L179 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-14 18:22:07,672 WARN L179 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2018-10-14 18:22:08,693 WARN L179 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 247 [2018-10-14 18:22:09,627 WARN L179 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 245 [2018-10-14 18:22:10,430 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 216 [2018-10-14 18:22:11,379 WARN L179 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 227 [2018-10-14 18:22:12,409 WARN L179 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 231 [2018-10-14 18:22:13,539 WARN L179 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 234 [2018-10-14 18:22:14,341 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 216 [2018-10-14 18:22:15,242 WARN L179 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 235 [2018-10-14 18:22:16,129 WARN L179 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-14 18:22:16,941 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2018-10-14 18:22:17,852 WARN L179 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 218 [2018-10-14 18:22:18,919 WARN L179 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 222 [2018-10-14 18:22:19,920 WARN L179 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 225 [2018-10-14 18:22:20,745 WARN L179 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 210 [2018-10-14 18:22:21,617 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 223 [2018-10-14 18:22:22,480 WARN L179 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 221 [2018-10-14 18:22:23,283 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-14 18:22:24,154 WARN L179 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 210 [2018-10-14 18:22:25,069 WARN L179 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 213 [2018-10-14 18:22:25,962 WARN L179 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 216 [2018-10-14 18:22:26,750 WARN L179 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2018-10-14 18:22:27,590 WARN L179 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 215 [2018-10-14 18:22:28,428 WARN L179 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 210 [2018-10-14 18:22:29,244 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-14 18:22:30,017 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2018-10-14 18:22:30,851 WARN L179 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-14 18:22:31,708 WARN L179 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-14 18:22:32,475 WARN L179 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 195 [2018-10-14 18:22:33,296 WARN L179 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2018-10-14 18:22:34,176 WARN L179 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2018-10-14 18:22:34,949 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2018-10-14 18:22:35,812 WARN L179 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-14 18:22:36,349 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-14 18:22:36,851 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-14 18:22:37,378 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 18:22:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:22:37,467 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-14 18:22:37,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-14 18:22:37,467 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 197 [2018-10-14 18:22:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:22:37,469 INFO L225 Difference]: With dead ends: 222 [2018-10-14 18:22:37,469 INFO L226 Difference]: Without dead ends: 222 [2018-10-14 18:22:37,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 83.5s TimeCoverageRelationStatistics Valid=3552, Invalid=22854, Unknown=0, NotChecked=0, Total=26406 [2018-10-14 18:22:37,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-14 18:22:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2018-10-14 18:22:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-14 18:22:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-14 18:22:37,475 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 197 [2018-10-14 18:22:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:22:37,475 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-14 18:22:37,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 18:22:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-14 18:22:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-14 18:22:37,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:22:37,477 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:22:37,477 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:22:37,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:22:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash -222853492, now seen corresponding path program 11 times [2018-10-14 18:22:37,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:22:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:22:39,334 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-14 18:22:40,209 WARN L179 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 71 [2018-10-14 18:22:40,927 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-14 18:22:41,622 WARN L179 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-14 18:22:42,318 WARN L179 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-14 18:22:43,046 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2018-10-14 18:22:43,967 WARN L179 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-14 18:22:44,703 WARN L179 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-14 18:22:45,426 WARN L179 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 66 [2018-10-14 18:22:46,182 WARN L179 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 66 [2018-10-14 18:22:46,949 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 76 [2018-10-14 18:22:47,745 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 78 [2018-10-14 18:22:48,535 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 72 [2018-10-14 18:22:49,349 WARN L179 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 72 [2018-10-14 18:22:50,086 WARN L179 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 70 [2018-10-14 18:22:50,821 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 70 [2018-10-14 18:22:51,555 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 70 [2018-10-14 18:22:52,231 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 67 [2018-10-14 18:22:52,906 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 64 [2018-10-14 18:22:53,577 WARN L179 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 64 [2018-10-14 18:22:54,364 WARN L179 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 62 [2018-10-14 18:22:55,012 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 62 [2018-10-14 18:22:55,606 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 60 [2018-10-14 18:22:56,034 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 61 [2018-10-14 18:22:56,446 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2018-10-14 18:22:56,863 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2018-10-14 18:22:57,260 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2018-10-14 18:22:57,657 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2018-10-14 18:22:58,076 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2018-10-14 18:22:58,393 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2018-10-14 18:22:58,717 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 18:22:59,041 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 18:22:59,464 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-10-14 18:22:59,788 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-10-14 18:23:00,106 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 18:23:05,539 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 18:23:05,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:23:05,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-14 18:23:05,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-14 18:23:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-14 18:23:05,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=6220, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 18:23:05,541 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 82 states. [2018-10-14 18:23:08,304 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2018-10-14 18:23:09,195 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-14 18:23:09,804 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 18:23:10,458 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-14 18:23:11,233 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-14 18:23:12,314 WARN L179 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2018-10-14 18:23:13,248 WARN L179 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2018-10-14 18:23:14,289 WARN L179 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 250 [2018-10-14 18:23:15,598 WARN L179 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 300 [2018-10-14 18:23:16,355 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2018-10-14 18:23:16,959 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-14 18:23:18,105 WARN L179 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 265 [2018-10-14 18:23:19,324 WARN L179 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 267 [2018-10-14 18:23:20,764 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2018-10-14 18:23:22,198 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 281 DAG size of output: 280 [2018-10-14 18:23:23,131 WARN L179 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 258 [2018-10-14 18:23:24,234 WARN L179 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 315 [2018-10-14 18:23:25,429 WARN L179 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 309 [2018-10-14 18:23:26,353 WARN L179 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 252 [2018-10-14 18:23:27,637 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 281 DAG size of output: 271 [2018-10-14 18:23:29,327 WARN L179 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 286 DAG size of output: 274 [2018-10-14 18:23:30,871 WARN L179 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 291 DAG size of output: 277 [2018-10-14 18:23:31,755 WARN L179 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 250 [2018-10-14 18:23:32,826 WARN L179 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 295 [2018-10-14 18:23:33,984 WARN L179 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 288 [2018-10-14 18:23:34,897 WARN L179 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 243 [2018-10-14 18:23:36,061 WARN L179 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 256 [2018-10-14 18:23:37,461 WARN L179 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 259 [2018-10-14 18:23:38,730 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 278 DAG size of output: 262 [2018-10-14 18:23:39,610 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 247 [2018-10-14 18:23:40,690 WARN L179 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 291 [2018-10-14 18:23:41,822 WARN L179 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-14 18:23:42,729 WARN L179 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 241 [2018-10-14 18:23:43,941 WARN L179 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 266 [2018-10-14 18:23:45,524 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 283 DAG size of output: 269 [2018-10-14 18:23:46,921 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 288 DAG size of output: 272 [2018-10-14 18:23:47,838 WARN L179 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 240 [2018-10-14 18:23:48,911 WARN L179 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 275 [2018-10-14 18:23:50,015 WARN L179 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 276 [2018-10-14 18:23:50,993 WARN L179 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 241 [2018-10-14 18:23:52,182 WARN L179 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 250 [2018-10-14 18:23:53,387 WARN L179 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 252 [2018-10-14 18:23:54,595 WARN L179 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 255 [2018-10-14 18:23:55,503 WARN L179 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 240 [2018-10-14 18:23:56,545 WARN L179 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 270 [2018-10-14 18:23:57,578 WARN L179 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 264 [2018-10-14 18:23:58,460 WARN L179 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 235 [2018-10-14 18:23:59,532 WARN L179 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 247 [2018-10-14 18:24:00,771 WARN L179 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 251 [2018-10-14 18:24:01,978 WARN L179 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 254 [2018-10-14 18:24:02,860 WARN L179 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 230 [2018-10-14 18:24:03,871 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 254 [2018-10-14 18:24:04,864 WARN L179 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 252 [2018-10-14 18:24:05,747 WARN L179 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 229 [2018-10-14 18:24:06,770 WARN L179 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 235 [2018-10-14 18:24:07,848 WARN L179 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 238 [2018-10-14 18:24:08,914 WARN L179 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 241 [2018-10-14 18:24:09,833 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 230 [2018-10-14 18:24:10,883 WARN L179 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 251 [2018-10-14 18:24:11,913 WARN L179 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 244 [2018-10-14 18:24:12,781 WARN L179 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 224 [2018-10-14 18:24:13,769 WARN L179 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 235 [2018-10-14 18:24:14,809 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 238 [2018-10-14 18:24:15,825 WARN L179 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 241 [2018-10-14 18:24:16,713 WARN L179 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 220 [2018-10-14 18:24:17,652 WARN L179 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 234 [2018-10-14 18:24:18,566 WARN L179 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 228 [2018-10-14 18:24:19,395 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 215 [2018-10-14 18:24:20,236 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 219 [2018-10-14 18:24:21,127 WARN L179 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2018-10-14 18:24:22,091 WARN L179 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 225 [2018-10-14 18:24:22,946 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-14 18:24:23,876 WARN L179 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 215 [2018-10-14 18:24:24,792 WARN L179 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 215 [2018-10-14 18:24:25,695 WARN L179 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2018-10-14 18:24:26,722 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-14 18:24:27,346 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-14 18:24:27,911 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 18:24:28,541 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-14 18:24:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:24:28,601 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-14 18:24:28,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-14 18:24:28,601 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 210 [2018-10-14 18:24:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:24:28,603 INFO L225 Difference]: With dead ends: 235 [2018-10-14 18:24:28,603 INFO L226 Difference]: Without dead ends: 235 [2018-10-14 18:24:28,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6975 ImplicationChecksByTransitivity, 104.8s TimeCoverageRelationStatistics Valid=3727, Invalid=27425, Unknown=0, NotChecked=0, Total=31152 [2018-10-14 18:24:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-14 18:24:28,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 224. [2018-10-14 18:24:28,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-14 18:24:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-14 18:24:28,608 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 210 [2018-10-14 18:24:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:24:28,608 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-14 18:24:28,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-14 18:24:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-14 18:24:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-14 18:24:28,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:24:28,610 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:24:28,610 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:24:28,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:24:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash 869643704, now seen corresponding path program 12 times [2018-10-14 18:24:28,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:24:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:24:31,264 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 157 DAG size of output: 77 [2018-10-14 18:24:32,510 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-14 18:24:33,613 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-14 18:24:34,707 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-14 18:24:35,823 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-14 18:24:37,107 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-14 18:24:38,224 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-14 18:24:39,344 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2018-10-14 18:24:40,466 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2018-10-14 18:24:41,747 WARN L179 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 161 DAG size of output: 83 [2018-10-14 18:24:43,069 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 174 DAG size of output: 85 [2018-10-14 18:24:44,286 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-14 18:24:45,496 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-14 18:24:46,686 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 156 DAG size of output: 78 [2018-10-14 18:24:47,946 WARN L179 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 156 DAG size of output: 78 [2018-10-14 18:24:49,179 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 154 DAG size of output: 76 [2018-10-14 18:24:50,154 WARN L179 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2018-10-14 18:24:51,113 WARN L179 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-14 18:24:52,073 WARN L179 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-14 18:24:53,018 WARN L179 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-14 18:24:53,982 WARN L179 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-14 18:24:54,913 WARN L179 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-14 18:24:55,650 WARN L179 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2018-10-14 18:24:56,387 WARN L179 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2018-10-14 18:24:57,133 WARN L179 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2018-10-14 18:24:57,896 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-14 18:24:58,620 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-14 18:24:59,323 WARN L179 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-14 18:24:59,879 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-14 18:25:00,443 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-14 18:25:00,999 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-14 18:25:01,544 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-14 18:25:02,105 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-14 18:25:02,678 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:25:03,107 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-14 18:25:03,541 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 18:25:03,963 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 18:25:04,383 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 18:25:04,814 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 18:25:05,253 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-14 18:25:05,582 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-14 18:25:05,908 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-14 18:25:06,229 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-14 18:25:06,556 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-14 18:25:06,845 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-14 18:25:07,165 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-10-14 18:25:11,950 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 18:25:11,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:25:11,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-14 18:25:11,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-14 18:25:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-14 18:25:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=7220, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 18:25:11,952 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 88 states. [2018-10-14 18:25:15,892 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-14 18:25:16,240 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-14 18:25:17,210 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 18:25:17,933 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-10-14 18:25:18,725 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-14 18:25:19,677 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2018-10-14 18:25:21,168 WARN L179 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-14 18:25:22,304 WARN L179 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2018-10-14 18:25:23,564 WARN L179 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 264 [2018-10-14 18:25:25,115 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 369 DAG size of output: 318 [2018-10-14 18:25:26,077 WARN L179 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2018-10-14 18:25:26,797 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2018-10-14 18:25:28,247 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 293 DAG size of output: 281 [2018-10-14 18:25:30,117 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 298 DAG size of output: 284 [2018-10-14 18:25:31,706 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 303 DAG size of output: 287 [2018-10-14 18:25:32,834 WARN L179 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 274 [2018-10-14 18:25:34,222 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 365 DAG size of output: 337 [2018-10-14 18:25:35,718 WARN L179 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 351 DAG size of output: 334 [2018-10-14 18:25:36,850 WARN L179 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 271 [2018-10-14 18:25:38,396 WARN L179 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 305 DAG size of output: 285 [2018-10-14 18:25:40,344 WARN L179 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 311 DAG size of output: 292