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-b8f97f7-m [2018-10-10 16:31:22,366 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 16:31:22,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 16:31:22,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 16:31:22,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 16:31:22,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 16:31:22,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 16:31:22,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 16:31:22,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 16:31:22,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 16:31:22,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 16:31:22,398 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 16:31:22,399 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 16:31:22,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 16:31:22,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 16:31:22,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 16:31:22,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 16:31:22,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 16:31:22,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 16:31:22,408 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 16:31:22,409 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 16:31:22,410 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 16:31:22,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 16:31:22,413 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 16:31:22,413 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 16:31:22,414 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 16:31:22,415 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 16:31:22,416 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 16:31:22,417 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 16:31:22,418 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 16:31:22,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 16:31:22,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 16:31:22,419 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 16:31:22,419 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 16:31:22,420 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 16:31:22,421 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 16:31:22,421 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 16:31:22,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 16:31:22,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 16:31:22,432 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 16:31:22,433 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 16:31:22,435 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 16:31:22,435 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 16:31:22,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 16:31:22,436 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 16:31:22,436 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 16:31:22,437 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 16:31:22,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 16:31:22,437 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 16:31:22,437 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 16:31:22,441 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 16:31:22,442 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 16:31:22,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 16:31:22,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 16:31:22,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 16:31:22,532 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 16:31:22,533 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 16:31:22,533 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 16:31:22,534 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-10 16:31:22,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 16:31:22,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-10 16:31:22,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 16:31:22,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 16:31:22,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 16:31:22,633 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,635 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,651 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,651 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,657 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,660 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,661 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 10.10 04:31:22" (1/1) ... [2018-10-10 16:31:22,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 16:31:22,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 16:31:22,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 16:31:22,665 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 16:31:22,669 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 10.10 04:31:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 16:31:22,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 16:31:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 16:31:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 16:31:23,364 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 16:31:23,365 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 10.10 04:31:23 BoogieIcfgContainer [2018-10-10 16:31:23,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 16:31:23,366 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-10 16:31:23,366 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-10 16:31:23,367 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-10 16:31:23,370 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 10.10 04:31:23" (1/1) ... [2018-10-10 16:31:23,379 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-10 16:31:23,380 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-10 16:31:23,421 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-10 16:31:23,465 INFO L217 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-10 16:31:23,482 INFO L280 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-10 16:31:23,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-10 16:31:48,440 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. [2018-10-10 16:31:48,443 INFO L304 apSepIcfgTransformer]: finished equality analysis [2018-10-10 16:31:48,449 INFO L316 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-10 16:31:48,568 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select |v_#locv_ULTIMATE.start_write~int_old_#memory_int_4_1_1| |v_ULTIMATE.start_write~int_#ptr.base_12|) at (assume write~int_old_#memory_int[write~int_#ptr.base := write~int_old_#memory_int[write~int_#ptr.base][write~int_#ptr.offset := write~int_#value]] == #memory_int;) [2018-10-10 16:31:48,634 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select (select |#loc_#memory_int_(Array-Int-(Array-Int-#locsort2))| |v_ULTIMATE.start_read~int_#ptr.base_7|) |v_ULTIMATE.start_read~int_#ptr.offset_5|) at (assume #memory_int[read~int_#ptr.base][read~int_#ptr.offset] == read~int_#value;) [2018-10-10 16:31:48,636 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-10 16:31:48,636 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-10 16:31:48,636 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-10 16:31:48,637 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-10 16:31:48,637 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-10 16:31:48,637 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-10 16:31:48,637 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-10 16:31:48,637 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-10 16:31:48,637 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-10 16:31:48,637 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-10 16:31:48,638 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-10 16:31:48,638 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-10 16:31:48,638 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-10 16:31:48,638 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-10 16:31:48,638 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-10 16:31:48,640 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-10 16:31:48,668 INFO L202 PluginConnector]: Adding new model cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.10 04:31:48 BasicIcfg [2018-10-10 16:31:48,668 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-10 16:31:48,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 16:31:48,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 16:31:48,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 16:31:48,673 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 10.10 04:31:22" (1/3) ... [2018-10-10 16:31:48,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fff1d9b and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 04:31:48, skipping insertion in model container [2018-10-10 16:31:48,674 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 10.10 04:31:23" (2/3) ... [2018-10-10 16:31:48,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fff1d9b and model type cstrncat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 04:31:48, skipping insertion in model container [2018-10-10 16:31:48,675 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 10.10 04:31:48" (3/3) ... [2018-10-10 16:31:48,676 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-10 16:31:48,686 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 16:31:48,695 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 16:31:48,712 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 16:31:48,739 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 16:31:48,740 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 16:31:48,740 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 16:31:48,740 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 16:31:48,740 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 16:31:48,741 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 16:31:48,741 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 16:31:48,741 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 16:31:48,741 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 16:31:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-10-10 16:31:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-10 16:31:48,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:31:48,767 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] [2018-10-10 16:31:48,768 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:31:48,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:31:48,774 INFO L82 PathProgramCache]: Analyzing trace with hash -727932232, now seen corresponding path program 1 times [2018-10-10 16:31:48,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:31:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:31:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:31:50,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 16:31:50,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 16:31:50,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 16:31:50,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 16:31:50,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-10 16:31:50,329 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 12 states. [2018-10-10 16:31:51,035 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 16:31:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:31:51,580 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-10 16:31:51,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 16:31:51,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-10-10 16:31:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:31:51,593 INFO L225 Difference]: With dead ends: 92 [2018-10-10 16:31:51,593 INFO L226 Difference]: Without dead ends: 92 [2018-10-10 16:31:51,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-10 16:31:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-10 16:31:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2018-10-10 16:31:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-10 16:31:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-10 16:31:51,639 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 67 [2018-10-10 16:31:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:31:51,640 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-10 16:31:51,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 16:31:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-10 16:31:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 16:31:51,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:31:51,643 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] [2018-10-10 16:31:51,643 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:31:51,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:31:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1648148748, now seen corresponding path program 1 times [2018-10-10 16:31:51,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:31:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:31:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:31:52,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:31:52,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 16:31:52,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 16:31:52,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 16:31:52,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-10 16:31:52,359 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 22 states. [2018-10-10 16:31:54,015 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-10 16:31:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:31:54,349 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-10 16:31:54,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 16:31:54,350 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2018-10-10 16:31:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:31:54,352 INFO L225 Difference]: With dead ends: 105 [2018-10-10 16:31:54,352 INFO L226 Difference]: Without dead ends: 105 [2018-10-10 16:31:54,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 16:31:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-10 16:31:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2018-10-10 16:31:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-10 16:31:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-10 16:31:54,363 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 80 [2018-10-10 16:31:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:31:54,364 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-10 16:31:54,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 16:31:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-10 16:31:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-10 16:31:54,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:31:54,366 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] [2018-10-10 16:31:54,366 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:31:54,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:31:54,367 INFO L82 PathProgramCache]: Analyzing trace with hash 318999352, now seen corresponding path program 2 times [2018-10-10 16:31:54,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:31:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:31:55,419 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-10-10 16:31:55,627 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-10 16:31:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:31:56,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:31:56,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-10 16:31:56,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-10 16:31:56,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-10 16:31:56,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2018-10-10 16:31:56,073 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 27 states. [2018-10-10 16:31:57,636 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-10 16:31:57,865 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-10 16:31:59,013 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-10 16:32:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:32:00,304 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-10 16:32:00,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-10 16:32:00,305 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2018-10-10 16:32:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:32:00,308 INFO L225 Difference]: With dead ends: 118 [2018-10-10 16:32:00,308 INFO L226 Difference]: Without dead ends: 118 [2018-10-10 16:32:00,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2018-10-10 16:32:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-10 16:32:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2018-10-10 16:32:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-10 16:32:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-10 16:32:00,318 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 93 [2018-10-10 16:32:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:32:00,319 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-10 16:32:00,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-10 16:32:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-10 16:32:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 16:32:00,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:32:00,321 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] [2018-10-10 16:32:00,322 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:32:00,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:32:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash 657696908, now seen corresponding path program 3 times [2018-10-10 16:32:00,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:32:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:32:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:32:01,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:32:01,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-10 16:32:01,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-10 16:32:01,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-10 16:32:01,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1046, Unknown=0, NotChecked=0, Total=1122 [2018-10-10 16:32:01,781 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 34 states. [2018-10-10 16:32:03,170 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 16:32:03,401 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-10-10 16:32:03,671 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-10 16:32:04,948 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-10 16:32:05,184 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-10 16:32:06,666 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-10 16:32:06,970 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-10 16:32:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:32:07,646 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-10 16:32:07,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-10 16:32:07,648 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 106 [2018-10-10 16:32:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:32:07,651 INFO L225 Difference]: With dead ends: 131 [2018-10-10 16:32:07,651 INFO L226 Difference]: Without dead ends: 131 [2018-10-10 16:32:07,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=711, Invalid=4691, Unknown=0, NotChecked=0, Total=5402 [2018-10-10 16:32:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-10 16:32:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2018-10-10 16:32:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-10 16:32:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-10 16:32:07,662 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 106 [2018-10-10 16:32:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:32:07,663 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-10 16:32:07,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-10 16:32:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-10 16:32:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-10 16:32:07,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:32:07,665 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] [2018-10-10 16:32:07,665 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:32:07,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:32:07,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1650404424, now seen corresponding path program 4 times [2018-10-10 16:32:07,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:32:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:32:08,360 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-10 16:32:08,567 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-10 16:32:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:32:09,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:32:09,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-10 16:32:09,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-10 16:32:09,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-10 16:32:09,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1393, Unknown=0, NotChecked=0, Total=1482 [2018-10-10 16:32:09,961 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 39 states. [2018-10-10 16:32:12,193 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-10 16:32:12,423 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:32:12,989 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 16:32:13,387 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 16:32:13,683 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2018-10-10 16:32:14,047 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 113 [2018-10-10 16:32:14,253 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:32:14,708 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2018-10-10 16:32:15,135 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2018-10-10 16:32:15,565 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 112 [2018-10-10 16:32:15,848 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2018-10-10 16:32:16,180 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2018-10-10 16:32:16,388 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:32:16,813 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2018-10-10 16:32:17,223 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2018-10-10 16:32:17,424 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:32:18,178 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:32:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:32:19,494 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-10 16:32:19,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-10 16:32:19,495 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 119 [2018-10-10 16:32:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:32:19,497 INFO L225 Difference]: With dead ends: 144 [2018-10-10 16:32:19,497 INFO L226 Difference]: Without dead ends: 144 [2018-10-10 16:32:19,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=854, Invalid=6286, Unknown=0, NotChecked=0, Total=7140 [2018-10-10 16:32:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-10 16:32:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2018-10-10 16:32:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-10 16:32:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-10 16:32:19,509 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 119 [2018-10-10 16:32:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:32:19,509 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-10 16:32:19,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-10 16:32:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-10 16:32:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-10 16:32:19,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:32:19,512 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] [2018-10-10 16:32:19,512 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:32:19,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:32:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash -749719540, now seen corresponding path program 5 times [2018-10-10 16:32:19,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:32:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:32:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:32:22,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:32:22,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 16:32:22,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 16:32:22,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 16:32:22,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2018, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 16:32:22,276 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 47 states. [2018-10-10 16:32:23,119 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-10-10 16:32:24,934 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 16:32:25,247 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:32:25,669 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 16:32:25,973 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:32:26,352 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2018-10-10 16:32:26,816 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2018-10-10 16:32:27,086 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-10 16:32:27,289 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 16:32:27,553 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 16:32:27,940 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-10 16:32:28,211 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-10 16:32:28,628 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2018-10-10 16:32:29,045 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 140 [2018-10-10 16:32:29,519 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-10 16:32:29,855 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2018-10-10 16:32:30,260 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-10 16:32:30,910 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2018-10-10 16:32:31,339 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-10 16:32:31,668 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-10 16:32:32,050 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2018-10-10 16:32:32,457 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2018-10-10 16:32:32,795 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2018-10-10 16:32:33,171 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2018-10-10 16:32:33,620 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-10 16:32:34,022 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2018-10-10 16:32:34,324 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2018-10-10 16:32:34,658 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2018-10-10 16:32:34,978 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-10 16:32:35,268 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2018-10-10 16:32:35,569 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-10 16:32:35,916 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-10 16:32:36,114 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:32:36,302 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:32:36,514 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 16:32:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:32:36,550 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-10 16:32:36,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-10 16:32:36,555 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 132 [2018-10-10 16:32:36,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:32:36,557 INFO L225 Difference]: With dead ends: 157 [2018-10-10 16:32:36,557 INFO L226 Difference]: Without dead ends: 157 [2018-10-10 16:32:36,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1304, Invalid=8596, Unknown=0, NotChecked=0, Total=9900 [2018-10-10 16:32:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-10 16:32:36,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2018-10-10 16:32:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-10 16:32:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-10 16:32:36,567 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 132 [2018-10-10 16:32:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:32:36,568 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-10 16:32:36,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 16:32:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-10 16:32:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-10 16:32:36,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:32:36,571 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] [2018-10-10 16:32:36,571 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:32:36,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:32:36,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1664908344, now seen corresponding path program 6 times [2018-10-10 16:32:36,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:32:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:32:37,249 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2018-10-10 16:32:37,459 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-10-10 16:32:37,712 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:32:38,119 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:32:38,730 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 16:32:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:32:41,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:32:41,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-10 16:32:41,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-10 16:32:41,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-10 16:32:41,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2496, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 16:32:41,140 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 52 states. [2018-10-10 16:32:43,842 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 16:32:44,143 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 16:32:44,512 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 16:32:45,064 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:32:45,465 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 16:32:46,062 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 142 [2018-10-10 16:32:46,622 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2018-10-10 16:32:46,960 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 16:32:47,210 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 16:32:47,698 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2018-10-10 16:32:48,370 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2018-10-10 16:32:49,006 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 155 [2018-10-10 16:32:49,447 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2018-10-10 16:32:49,946 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 165 [2018-10-10 16:32:50,454 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2018-10-10 16:32:50,847 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 138 [2018-10-10 16:32:51,401 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2018-10-10 16:32:52,172 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2018-10-10 16:32:52,823 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2018-10-10 16:32:53,283 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-10 16:32:53,818 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 159 [2018-10-10 16:32:54,400 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 157 [2018-10-10 16:32:54,822 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-10 16:32:55,322 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2018-10-10 16:32:55,830 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 149 [2018-10-10 16:32:56,358 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 152 [2018-10-10 16:32:56,810 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 138 [2018-10-10 16:32:57,272 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 151 [2018-10-10 16:32:57,718 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-10 16:32:58,105 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-10 16:32:58,534 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-10 16:32:59,004 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-10 16:32:59,516 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-10 16:32:59,914 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 131 [2018-10-10 16:33:00,349 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2018-10-10 16:33:00,753 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-10 16:33:01,119 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-10 16:33:01,572 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-10 16:33:01,830 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 16:33:02,072 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 16:33:02,331 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 16:33:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:33:02,379 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-10 16:33:02,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-10 16:33:02,380 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 145 [2018-10-10 16:33:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:33:02,381 INFO L225 Difference]: With dead ends: 170 [2018-10-10 16:33:02,381 INFO L226 Difference]: Without dead ends: 170 [2018-10-10 16:33:02,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=1574, Invalid=10636, Unknown=0, NotChecked=0, Total=12210 [2018-10-10 16:33:02,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-10 16:33:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2018-10-10 16:33:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-10 16:33:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-10 16:33:02,394 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 145 [2018-10-10 16:33:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:33:02,394 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-10 16:33:02,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-10 16:33:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-10 16:33:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-10 16:33:02,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:33:02,397 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] [2018-10-10 16:33:02,397 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:33:02,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:33:02,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1127590004, now seen corresponding path program 7 times [2018-10-10 16:33:02,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:33:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:33:03,312 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-10 16:33:03,543 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:33:03,740 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:33:03,937 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:33:04,204 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-10 16:33:04,513 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:33:04,713 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:33:04,927 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 16:33:05,159 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 16:33:05,437 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-10 16:33:05,752 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 16:33:06,033 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 16:33:06,323 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 16:33:06,593 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-10 16:33:06,828 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-10 16:33:07,096 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-10 16:33:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:33:10,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:33:10,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 16:33:10,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 16:33:10,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 16:33:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=3055, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 16:33:10,200 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 57 states. [2018-10-10 16:33:10,961 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-10 16:33:13,258 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 16:33:13,606 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 16:33:14,026 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 16:33:14,787 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 16:33:15,271 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 16:33:15,854 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 159 [2018-10-10 16:33:16,577 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 188 [2018-10-10 16:33:17,019 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 16:33:17,331 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:33:17,942 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-10 16:33:18,782 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-10 16:33:19,497 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-10 16:33:20,123 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 164 [2018-10-10 16:33:20,807 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 197 [2018-10-10 16:33:21,236 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 16:33:21,579 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 16:33:21,974 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 16:33:22,595 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 16:33:23,036 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:33:23,378 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 16:33:23,767 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 16:33:24,159 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 16:33:24,459 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 16:33:25,115 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2018-10-10 16:33:25,950 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-10 16:33:26,589 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-10 16:33:26,914 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 16:33:27,281 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 16:33:27,649 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 16:33:27,933 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 16:33:28,266 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 16:33:28,801 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 16:33:29,162 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 16:33:29,489 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 16:33:29,910 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 16:33:30,279 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 16:33:30,557 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:33:31,059 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-10 16:33:31,782 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-10-10 16:33:32,128 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 16:33:32,429 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:33:32,751 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:33:33,062 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:33:33,323 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:33:33,957 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-10 16:33:34,262 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-10 16:33:34,522 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:33:34,863 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 16:33:35,526 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 16:33:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:33:35,625 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-10 16:33:35,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-10 16:33:35,626 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 158 [2018-10-10 16:33:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:33:35,628 INFO L225 Difference]: With dead ends: 183 [2018-10-10 16:33:35,628 INFO L226 Difference]: Without dead ends: 183 [2018-10-10 16:33:35,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=1355, Invalid=13897, Unknown=0, NotChecked=0, Total=15252 [2018-10-10 16:33:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-10 16:33:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2018-10-10 16:33:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-10 16:33:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-10 16:33:35,639 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 158 [2018-10-10 16:33:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:33:35,640 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-10 16:33:35,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 16:33:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-10 16:33:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-10 16:33:35,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:33:35,643 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] [2018-10-10 16:33:35,643 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:33:35,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:33:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -392264520, now seen corresponding path program 8 times [2018-10-10 16:33:35,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:33:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:33:36,415 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 16:33:36,593 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-10 16:33:37,320 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 16:33:37,665 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:33:38,002 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:33:38,442 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:33:38,809 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 16:33:39,264 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:33:39,612 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:33:39,974 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 16:33:40,355 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 16:33:40,741 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-10 16:33:41,165 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-10 16:33:41,545 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 16:33:41,930 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 16:33:42,296 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 16:33:42,655 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 16:33:43,014 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:33:43,310 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-10 16:33:43,599 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 16:33:43,894 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 16:33:44,191 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 16:33:44,433 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 16:33:44,704 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-10 16:33:44,884 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-10 16:33:45,094 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-10 16:33:45,396 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-10 16:33:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:33:48,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:33:48,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-10 16:33:48,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-10 16:33:48,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-10 16:33:48,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3753, Unknown=0, NotChecked=0, Total=3906 [2018-10-10 16:33:48,319 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 63 states. [2018-10-10 16:33:51,478 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-10 16:33:51,853 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-10 16:33:52,264 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:33:52,768 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 16:33:53,605 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-10 16:33:54,223 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-10 16:33:54,944 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 180 [2018-10-10 16:33:55,877 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 214 [2018-10-10 16:33:56,391 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2018-10-10 16:33:56,773 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 16:33:57,544 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2018-10-10 16:33:58,595 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 197 [2018-10-10 16:33:59,441 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 200 [2018-10-10 16:34:00,132 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 186 [2018-10-10 16:34:01,038 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 225 [2018-10-10 16:34:01,543 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 16:34:01,917 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 16:34:02,672 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 197 [2018-10-10 16:34:03,432 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-10 16:34:03,967 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-10 16:34:04,379 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-10 16:34:04,886 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-10 16:34:05,369 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-10 16:34:05,793 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 16:34:06,266 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-10 16:34:07,022 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-10 16:34:07,534 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 16:34:07,927 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-10 16:34:08,396 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 16:34:08,883 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 16:34:09,222 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 16:34:09,880 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2018-10-10 16:34:10,921 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2018-10-10 16:34:11,683 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2018-10-10 16:34:12,059 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 16:34:12,499 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-10 16:34:12,923 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-10 16:34:13,252 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:34:13,642 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 16:34:14,295 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 16:34:14,708 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-10 16:34:15,062 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 16:34:15,456 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-10 16:34:15,884 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 16:34:16,253 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 16:34:16,813 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 162 [2018-10-10 16:34:17,432 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-10 16:34:17,842 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 16:34:18,238 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:34:18,614 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 16:34:18,985 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 16:34:19,288 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 16:34:20,058 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 16:34:20,430 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 16:34:20,740 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-10 16:34:21,164 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 16:34:21,958 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 16:34:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:34:22,077 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-10 16:34:22,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-10 16:34:22,078 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 171 [2018-10-10 16:34:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:34:22,079 INFO L225 Difference]: With dead ends: 196 [2018-10-10 16:34:22,079 INFO L226 Difference]: Without dead ends: 196 [2018-10-10 16:34:22,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=1522, Invalid=17110, Unknown=0, NotChecked=0, Total=18632 [2018-10-10 16:34:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-10 16:34:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2018-10-10 16:34:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-10 16:34:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-10 16:34:22,085 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 171 [2018-10-10 16:34:22,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:34:22,085 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-10 16:34:22,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-10 16:34:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-10 16:34:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-10 16:34:22,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:34:22,088 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] [2018-10-10 16:34:22,088 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:34:22,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:34:22,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1675239180, now seen corresponding path program 9 times [2018-10-10 16:34:22,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:34:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:34:23,555 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2018-10-10 16:34:24,110 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:34:24,566 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:34:25,018 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:34:25,491 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-10 16:34:26,031 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:34:26,568 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:34:27,020 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-10 16:34:27,465 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-10 16:34:27,986 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-10 16:34:28,564 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2018-10-10 16:34:29,096 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 16:34:29,611 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 16:34:30,121 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 16:34:30,618 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 16:34:31,125 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 16:34:31,577 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 16:34:31,960 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 16:34:32,338 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 16:34:32,705 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:34:33,058 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-10 16:34:33,427 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-10 16:34:33,695 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 16:34:33,966 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 16:34:34,234 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 16:34:34,500 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:34:34,749 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:34:35,017 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 16:34:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:34:38,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:34:38,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-10 16:34:38,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-10 16:34:38,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-10 16:34:38,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=4578, Unknown=0, NotChecked=0, Total=4970 [2018-10-10 16:34:38,358 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 71 states. [2018-10-10 16:34:41,914 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-10 16:34:42,373 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-10 16:34:42,857 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 16:34:43,453 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-10-10 16:34:44,407 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-10-10 16:34:45,092 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-10 16:34:45,915 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 205 [2018-10-10 16:34:47,000 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 244 [2018-10-10 16:34:47,613 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2018-10-10 16:34:48,066 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 16:34:48,598 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-10 16:34:49,371 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-10 16:34:49,907 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 16:34:50,617 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2018-10-10 16:34:51,472 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 253 [2018-10-10 16:34:52,437 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-10-10 16:34:53,177 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-10 16:34:54,147 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-10 16:34:55,374 WARN L178 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2018-10-10 16:34:56,453 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 231 [2018-10-10 16:34:57,222 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 207 [2018-10-10 16:34:58,037 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 246 [2018-10-10 16:34:58,939 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2018-10-10 16:34:59,647 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-10 16:35:00,530 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-10 16:35:01,482 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2018-10-10 16:35:02,507 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 226 [2018-10-10 16:35:03,172 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2018-10-10 16:35:03,943 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 234 [2018-10-10 16:35:04,797 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-10 16:35:05,484 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 200 [2018-10-10 16:35:06,315 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-10 16:35:07,259 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2018-10-10 16:35:08,182 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 216 [2018-10-10 16:35:08,825 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2018-10-10 16:35:09,579 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2018-10-10 16:35:10,357 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 221 [2018-10-10 16:35:11,038 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2018-10-10 16:35:11,808 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-10 16:35:12,762 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-10 16:35:13,622 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2018-10-10 16:35:14,273 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2018-10-10 16:35:15,003 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2018-10-10 16:35:15,746 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2018-10-10 16:35:16,407 WARN L178 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2018-10-10 16:35:17,102 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-10 16:35:17,921 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-10 16:35:18,694 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-10 16:35:19,327 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 181 [2018-10-10 16:35:20,040 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-10 16:35:20,767 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2018-10-10 16:35:21,414 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-10 16:35:22,095 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-10 16:35:22,885 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-10 16:35:23,586 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2018-10-10 16:35:24,204 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-10 16:35:24,872 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-10 16:35:25,546 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-10 16:35:26,162 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2018-10-10 16:35:26,809 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 173 [2018-10-10 16:35:27,548 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-10 16:35:28,007 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:35:28,440 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 16:35:28,892 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 16:35:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:35:28,972 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-10 16:35:28,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-10 16:35:28,972 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 184 [2018-10-10 16:35:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:35:28,974 INFO L225 Difference]: With dead ends: 209 [2018-10-10 16:35:28,974 INFO L226 Difference]: Without dead ends: 209 [2018-10-10 16:35:28,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 61.5s TimeCoverageRelationStatistics Valid=3138, Invalid=19814, Unknown=0, NotChecked=0, Total=22952 [2018-10-10 16:35:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-10 16:35:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-10 16:35:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-10 16:35:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-10 16:35:28,980 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 184 [2018-10-10 16:35:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:35:28,981 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-10 16:35:28,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-10 16:35:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-10 16:35:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-10 16:35:28,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:35:28,983 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] [2018-10-10 16:35:28,983 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:35:28,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:35:28,983 INFO L82 PathProgramCache]: Analyzing trace with hash -930157256, now seen corresponding path program 10 times [2018-10-10 16:35:28,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:35:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:35:30,799 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2018-10-10 16:35:31,423 WARN L178 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:35:32,052 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:35:32,740 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:35:33,390 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-10 16:35:34,082 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:35:34,704 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:35:35,324 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-10 16:35:35,937 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-10 16:35:36,611 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-10 16:35:37,320 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2018-10-10 16:35:38,068 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-10 16:35:38,734 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-10 16:35:39,375 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 16:35:40,037 WARN L178 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 16:35:40,687 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-10 16:35:41,209 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-10-10 16:35:41,724 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 16:35:42,245 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-10 16:35:42,778 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 16:35:43,329 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-10 16:35:43,825 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 16:35:44,206 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 16:35:44,585 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 16:35:44,977 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 16:35:45,349 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 16:35:45,725 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 16:35:46,128 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-10 16:35:46,420 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-10 16:35:46,713 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 16:35:46,993 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 16:35:47,266 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:35:47,535 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-10 16:35:47,813 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-10 16:35:48,052 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-10 16:35:48,341 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-10 16:35:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:35:51,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:35:51,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-10 16:35:51,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-10 16:35:51,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-10 16:35:51,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-10 16:35:51,540 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 76 states. [2018-10-10 16:35:55,781 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-10 16:35:56,309 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 16:35:56,893 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 16:35:57,609 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2018-10-10 16:35:58,759 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-10-10 16:35:59,589 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2018-10-10 16:36:00,587 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 222 [2018-10-10 16:36:01,781 WARN L178 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 266 [2018-10-10 16:36:02,487 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2018-10-10 16:36:03,037 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-10 16:36:04,127 WARN L178 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 237 [2018-10-10 16:36:05,501 WARN L178 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 240 [2018-10-10 16:36:06,645 WARN L178 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 243 [2018-10-10 16:36:07,482 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 230 [2018-10-10 16:36:08,482 WARN L178 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 277 [2018-10-10 16:36:09,571 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 273 [2018-10-10 16:36:10,398 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 226 [2018-10-10 16:36:11,540 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 250 [2018-10-10 16:36:12,936 WARN L178 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 253 [2018-10-10 16:36:14,215 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 264 DAG size of output: 256 [2018-10-10 16:36:15,039 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 230 [2018-10-10 16:36:16,001 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 271 [2018-10-10 16:36:17,068 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 269 [2018-10-10 16:36:17,912 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2018-10-10 16:36:19,083 WARN L178 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 245 [2018-10-10 16:36:20,165 WARN L178 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 248 [2018-10-10 16:36:21,286 WARN L178 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 251 [2018-10-10 16:36:22,066 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-10 16:36:22,979 WARN L178 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 259 [2018-10-10 16:36:24,027 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 257 [2018-10-10 16:36:24,862 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2018-10-10 16:36:25,878 WARN L178 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 235 [2018-10-10 16:36:26,968 WARN L178 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 238 [2018-10-10 16:36:28,066 WARN L178 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-10 16:36:28,870 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2018-10-10 16:36:29,795 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 247 [2018-10-10 16:36:30,745 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 245 [2018-10-10 16:36:31,555 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 216 [2018-10-10 16:36:32,483 WARN L178 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 227 [2018-10-10 16:36:33,513 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 231 [2018-10-10 16:36:34,618 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 234 [2018-10-10 16:36:35,399 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 216 [2018-10-10 16:36:36,298 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 235 [2018-10-10 16:36:37,211 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-10 16:36:38,021 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2018-10-10 16:36:38,945 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 218 [2018-10-10 16:36:40,006 WARN L178 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 222 [2018-10-10 16:36:41,008 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 225 [2018-10-10 16:36:41,851 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 210 [2018-10-10 16:36:42,686 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 223 [2018-10-10 16:36:43,529 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 221 [2018-10-10 16:36:44,337 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-10 16:36:45,218 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 210 [2018-10-10 16:36:46,115 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 213 [2018-10-10 16:36:46,997 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 216 [2018-10-10 16:36:47,782 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2018-10-10 16:36:48,591 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 215 [2018-10-10 16:36:49,442 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 210 [2018-10-10 16:36:50,228 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-10 16:36:51,000 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2018-10-10 16:36:51,834 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-10 16:36:52,658 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-10 16:36:53,417 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 195 [2018-10-10 16:36:54,221 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2018-10-10 16:36:55,102 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2018-10-10 16:36:55,861 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2018-10-10 16:36:56,712 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-10 16:36:57,235 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-10 16:36:57,742 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-10 16:36:58,259 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 16:36:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:36:58,345 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-10 16:36:58,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-10 16:36:58,346 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 197 [2018-10-10 16:36:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:36:58,348 INFO L225 Difference]: With dead ends: 222 [2018-10-10 16:36:58,348 INFO L226 Difference]: Without dead ends: 222 [2018-10-10 16:36:58,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 82.9s TimeCoverageRelationStatistics Valid=3552, Invalid=22854, Unknown=0, NotChecked=0, Total=26406 [2018-10-10 16:36:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-10 16:36:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2018-10-10 16:36:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-10 16:36:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-10 16:36:58,353 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 197 [2018-10-10 16:36:58,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:36:58,353 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-10 16:36:58,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-10 16:36:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-10 16:36:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-10 16:36:58,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:36:58,355 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] [2018-10-10 16:36:58,355 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:36:58,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:36:58,355 INFO L82 PathProgramCache]: Analyzing trace with hash -222853492, now seen corresponding path program 11 times [2018-10-10 16:36:58,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:36:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:37:00,199 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-10 16:37:00,560 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-10 16:37:01,447 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 71 [2018-10-10 16:37:02,151 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-10 16:37:02,853 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-10 16:37:03,558 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-10 16:37:04,290 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2018-10-10 16:37:05,212 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-10 16:37:05,962 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 68 [2018-10-10 16:37:06,673 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 66 [2018-10-10 16:37:07,437 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 66 [2018-10-10 16:37:08,186 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 76 [2018-10-10 16:37:08,961 WARN L178 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 78 [2018-10-10 16:37:09,735 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 72 [2018-10-10 16:37:10,565 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 72 [2018-10-10 16:37:11,306 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 70 [2018-10-10 16:37:12,041 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 70 [2018-10-10 16:37:12,780 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 70 [2018-10-10 16:37:13,443 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 67 [2018-10-10 16:37:14,111 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 64 [2018-10-10 16:37:14,781 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 64 [2018-10-10 16:37:15,544 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 62 [2018-10-10 16:37:16,200 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 62 [2018-10-10 16:37:16,794 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 60 [2018-10-10 16:37:17,215 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 61 [2018-10-10 16:37:17,638 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2018-10-10 16:37:18,050 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2018-10-10 16:37:18,465 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2018-10-10 16:37:18,866 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2018-10-10 16:37:19,295 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2018-10-10 16:37:19,623 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2018-10-10 16:37:19,954 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 16:37:20,333 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 16:37:20,648 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-10-10 16:37:20,956 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-10-10 16:37:21,274 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-10 16:37:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:37:26,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:37:26,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-10 16:37:26,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-10 16:37:26,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-10 16:37:26,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=6220, Unknown=0, NotChecked=0, Total=6642 [2018-10-10 16:37:26,722 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 82 states. [2018-10-10 16:37:29,421 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2018-10-10 16:37:30,305 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 16:37:30,886 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 16:37:31,507 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-10-10 16:37:32,286 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2018-10-10 16:37:33,361 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2018-10-10 16:37:34,279 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2018-10-10 16:37:35,314 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 250 [2018-10-10 16:37:36,621 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 300 [2018-10-10 16:37:37,383 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2018-10-10 16:37:37,985 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-10 16:37:39,129 WARN L178 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 265 [2018-10-10 16:37:40,379 WARN L178 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 267 [2018-10-10 16:37:41,836 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2018-10-10 16:37:43,283 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 281 DAG size of output: 280 [2018-10-10 16:37:44,186 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 258 [2018-10-10 16:37:45,280 WARN L178 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 315 [2018-10-10 16:37:46,474 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 309 [2018-10-10 16:37:47,376 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 252 [2018-10-10 16:37:48,560 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 271 [2018-10-10 16:37:50,087 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 286 DAG size of output: 274 [2018-10-10 16:37:51,609 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 291 DAG size of output: 277 [2018-10-10 16:37:52,492 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 250 [2018-10-10 16:37:53,593 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 295 [2018-10-10 16:37:54,782 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 288 [2018-10-10 16:37:55,709 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 243 [2018-10-10 16:37:56,923 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 256 [2018-10-10 16:37:58,350 WARN L178 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 259 [2018-10-10 16:37:59,627 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 278 DAG size of output: 262 [2018-10-10 16:38:00,500 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 247 [2018-10-10 16:38:01,595 WARN L178 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 291 [2018-10-10 16:38:02,726 WARN L178 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 285 [2018-10-10 16:38:03,625 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 241 [2018-10-10 16:38:04,821 WARN L178 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 266 [2018-10-10 16:38:06,419 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 283 DAG size of output: 269 [2018-10-10 16:38:07,826 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 288 DAG size of output: 272 [2018-10-10 16:38:08,738 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 240 [2018-10-10 16:38:09,788 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 275 [2018-10-10 16:38:10,877 WARN L178 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 276 [2018-10-10 16:38:11,852 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 241 [2018-10-10 16:38:12,979 WARN L178 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 250 [2018-10-10 16:38:14,147 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 252 [2018-10-10 16:38:15,291 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 255 [2018-10-10 16:38:16,161 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 240 [2018-10-10 16:38:17,255 WARN L178 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 270 [2018-10-10 16:38:18,285 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 264 [2018-10-10 16:38:19,175 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 235 [2018-10-10 16:38:20,242 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 247 [2018-10-10 16:38:21,433 WARN L178 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 251 [2018-10-10 16:38:22,667 WARN L178 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 254 [2018-10-10 16:38:23,566 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 230 [2018-10-10 16:38:24,585 WARN L178 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 254 [2018-10-10 16:38:25,626 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 252 [2018-10-10 16:38:26,504 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 229 [2018-10-10 16:38:27,556 WARN L178 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 235 [2018-10-10 16:38:28,602 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 238 [2018-10-10 16:38:29,675 WARN L178 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 241 [2018-10-10 16:38:30,560 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 230 [2018-10-10 16:38:31,564 WARN L178 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 251 [2018-10-10 16:38:32,587 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 244 [2018-10-10 16:38:33,443 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 224 [2018-10-10 16:38:34,437 WARN L178 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 235 [2018-10-10 16:38:35,460 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 238 [2018-10-10 16:38:36,509 WARN L178 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 241 [2018-10-10 16:38:37,429 WARN L178 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 220 [2018-10-10 16:38:38,365 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 234 [2018-10-10 16:38:39,320 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 228 [2018-10-10 16:38:40,159 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 215 [2018-10-10 16:38:41,009 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 219 [2018-10-10 16:38:41,920 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2018-10-10 16:38:42,826 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 225 [2018-10-10 16:38:43,644 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-10 16:38:44,474 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 215 [2018-10-10 16:38:45,295 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 215 [2018-10-10 16:38:46,094 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2018-10-10 16:38:46,969 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-10 16:38:47,568 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2018-10-10 16:38:48,119 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 16:38:48,698 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-10 16:38:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:38:48,757 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-10 16:38:48,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-10 16:38:48,757 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 210 [2018-10-10 16:38:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:38:48,759 INFO L225 Difference]: With dead ends: 235 [2018-10-10 16:38:48,759 INFO L226 Difference]: Without dead ends: 235 [2018-10-10 16:38:48,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6975 ImplicationChecksByTransitivity, 104.3s TimeCoverageRelationStatistics Valid=3727, Invalid=27425, Unknown=0, NotChecked=0, Total=31152 [2018-10-10 16:38:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-10 16:38:48,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 224. [2018-10-10 16:38:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-10 16:38:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-10 16:38:48,765 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 210 [2018-10-10 16:38:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:38:48,765 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-10 16:38:48,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-10 16:38:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-10 16:38:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-10 16:38:48,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:38:48,767 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] [2018-10-10 16:38:48,767 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:38:48,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:38:48,767 INFO L82 PathProgramCache]: Analyzing trace with hash 869643704, now seen corresponding path program 12 times [2018-10-10 16:38:48,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:38:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:38:51,628 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 157 DAG size of output: 77 [2018-10-10 16:38:52,825 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-10 16:38:53,938 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-10 16:38:55,034 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-10 16:38:56,172 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-10 16:38:57,377 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-10 16:38:58,509 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 152 DAG size of output: 74 [2018-10-10 16:38:59,608 WARN L178 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2018-10-10 16:39:00,698 WARN L178 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2018-10-10 16:39:01,894 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 161 DAG size of output: 83 [2018-10-10 16:39:03,181 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 174 DAG size of output: 85 [2018-10-10 16:39:04,360 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-10 16:39:05,522 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-10 16:39:06,683 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 156 DAG size of output: 78 [2018-10-10 16:39:07,939 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 156 DAG size of output: 78 [2018-10-10 16:39:09,155 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 154 DAG size of output: 76 [2018-10-10 16:39:10,075 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2018-10-10 16:39:11,023 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-10 16:39:11,935 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-10 16:39:12,899 WARN L178 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-10 16:39:13,812 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2018-10-10 16:39:14,735 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-10 16:39:15,446 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2018-10-10 16:39:16,156 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2018-10-10 16:39:16,895 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2018-10-10 16:39:17,594 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-10 16:39:18,397 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-10 16:39:19,078 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-10 16:39:19,621 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-10 16:39:20,157 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-10 16:39:20,690 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-10 16:39:21,208 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-10 16:39:22,341 WARN L178 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-10 16:39:22,895 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-10 16:39:23,398 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 16:39:23,809 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 16:39:24,224 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 16:39:24,631 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 16:39:25,036 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-10 16:39:25,456 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-10 16:39:25,783 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-10-10 16:39:26,099 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-10 16:39:26,416 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-10 16:39:26,726 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-10 16:39:27,029 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-10-10 16:39:27,348 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-10-10 16:39:28,242 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-10-10 16:39:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:39:32,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:39:32,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-10 16:39:32,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-10 16:39:32,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-10 16:39:32,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=7220, Unknown=0, NotChecked=0, Total=7656 [2018-10-10 16:39:32,066 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 88 states. [2018-10-10 16:39:35,942 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-10 16:39:37,268 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 16:39:37,983 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-10-10 16:39:38,810 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-10 16:39:39,762 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2018-10-10 16:39:41,209 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-10 16:39:42,327 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2018-10-10 16:39:43,596 WARN L178 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 264 [2018-10-10 16:39:45,187 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 369 DAG size of output: 318 [2018-10-10 16:39:46,138 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2018-10-10 16:39:46,879 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2018-10-10 16:39:48,292 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 293 DAG size of output: 281 [2018-10-10 16:39:50,185 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 298 DAG size of output: 284 [2018-10-10 16:39:51,733 WARN L178 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 303 DAG size of output: 287 [2018-10-10 16:39:52,850 WARN L178 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 274 [2018-10-10 16:39:54,218 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 365 DAG size of output: 337 [2018-10-10 16:39:55,706 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 351 DAG size of output: 334 [2018-10-10 16:39:56,821 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 271 [2018-10-10 16:39:58,344 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 305 DAG size of output: 285 [2018-10-10 16:40:00,297 WARN L178 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 311 DAG size of output: 292 [2018-10-10 16:40:01,970 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 317 DAG size of output: 295 [2018-10-10 16:40:02,999 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 267 [2018-10-10 16:40:04,344 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 349 DAG size of output: 321 [2018-10-10 16:40:05,664 WARN L178 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 317 [2018-10-10 16:40:06,752 WARN L178 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 264