java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 22:57:39,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 22:57:39,138 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 22:57:39,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 22:57:39,157 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 22:57:39,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 22:57:39,159 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 22:57:39,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 22:57:39,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 22:57:39,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 22:57:39,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 22:57:39,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 22:57:39,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 22:57:39,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 22:57:39,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 22:57:39,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 22:57:39,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 22:57:39,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 22:57:39,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 22:57:39,175 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 22:57:39,176 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 22:57:39,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 22:57:39,180 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 22:57:39,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 22:57:39,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 22:57:39,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 22:57:39,207 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 22:57:39,207 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 22:57:39,208 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 22:57:39,208 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 22:57:39,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 22:57:39,209 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 22:57:39,209 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 22:57:39,210 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 22:57:39,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 22:57:39,210 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 22:57:39,210 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 22:57:39,212 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 22:57:39,212 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 22:57:39,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 22:57:39,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 22:57:39,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 22:57:39,307 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 22:57:39,307 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 22:57:39,308 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 22:57:39,309 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-12 22:57:39,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 22:57:39,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-12 22:57:39,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 22:57:39,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 22:57:39,404 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 22:57:39,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... [2018-10-12 22:57:39,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 22:57:39,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 22:57:39,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 22:57:39,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 22:57:39,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 22:57:39,570 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 22:57:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 22:57:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 22:57:40,164 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 22:57:40,165 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:57:40 BoogieIcfgContainer [2018-10-12 22:57:40,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 22:57:40,166 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-12 22:57:40,166 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-12 22:57:40,167 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-12 22:57:40,171 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:57:40" (1/1) ... [2018-10-12 22:57:40,178 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-12 22:57:40,178 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-12 22:57:40,223 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-12 22:57:40,275 INFO L219 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-12 22:57:40,293 INFO L282 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-12 22:57:40,360 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-12 22:58:22,079 INFO L315 AbstractInterpreter]: Visited 79 different actions 104 times. Merged at 15 different actions 23 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-10-12 22:58:22,083 INFO L306 apSepIcfgTransformer]: finished equality analysis [2018-10-12 22:58:22,088 INFO L318 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-12 22:58:22,481 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;) [2018-10-12 22:58:22,484 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-12 22:58:22,484 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-12 22:58:22,485 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-12 22:58:22,485 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-12 22:58:22,485 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-12 22:58:22,485 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-12 22:58:22,485 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-12 22:58:22,485 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-12 22:58:22,486 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-12 22:58:22,486 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-12 22:58:22,486 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-12 22:58:22,486 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-12 22:58:22,486 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-12 22:58:22,486 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-12 22:58:22,486 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-12 22:58:22,488 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-12 22:58:22,510 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 12.10 10:58:22 BasicIcfg [2018-10-12 22:58:22,511 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-12 22:58:22,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 22:58:22,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 22:58:22,515 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 22:58:22,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 10:57:39" (1/3) ... [2018-10-12 22:58:22,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3478d88 and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:58:22, skipping insertion in model container [2018-10-12 22:58:22,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:57:40" (2/3) ... [2018-10-12 22:58:22,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3478d88 and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:58:22, skipping insertion in model container [2018-10-12 22:58:22,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 12.10 10:58:22" (3/3) ... [2018-10-12 22:58:22,519 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-12 22:58:22,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 22:58:22,538 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 22:58:22,556 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 22:58:22,582 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 22:58:22,584 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 22:58:22,584 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 22:58:22,584 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 22:58:22,585 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 22:58:22,585 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 22:58:22,587 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 22:58:22,587 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 22:58:22,587 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 22:58:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-12 22:58:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-12 22:58:22,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:22,611 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:22,612 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:22,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:22,618 INFO L82 PathProgramCache]: Analyzing trace with hash -572282269, now seen corresponding path program 1 times [2018-10-12 22:58:22,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:23,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 22:58:23,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-12 22:58:23,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 22:58:23,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 22:58:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-12 22:58:23,589 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 11 states. [2018-10-12 22:58:23,992 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 22:58:24,640 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-12 22:58:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:58:24,893 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-12 22:58:24,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 22:58:24,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2018-10-12 22:58:24,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:58:24,907 INFO L225 Difference]: With dead ends: 91 [2018-10-12 22:58:24,908 INFO L226 Difference]: Without dead ends: 91 [2018-10-12 22:58:24,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-12 22:58:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-12 22:58:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-12 22:58:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-12 22:58:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-12 22:58:24,956 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-12 22:58:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:58:24,956 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-12 22:58:24,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 22:58:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-12 22:58:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-12 22:58:24,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:24,960 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:24,960 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:24,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:24,961 INFO L82 PathProgramCache]: Analyzing trace with hash 188123709, now seen corresponding path program 1 times [2018-10-12 22:58:24,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:25,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:58:25,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-12 22:58:25,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 22:58:25,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 22:58:25,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-12 22:58:25,461 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 12 states. [2018-10-12 22:58:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:58:26,383 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-12 22:58:26,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-12 22:58:26,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2018-10-12 22:58:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:58:26,387 INFO L225 Difference]: With dead ends: 104 [2018-10-12 22:58:26,387 INFO L226 Difference]: Without dead ends: 104 [2018-10-12 22:58:26,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2018-10-12 22:58:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-12 22:58:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-12 22:58:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-12 22:58:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-12 22:58:26,397 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-12 22:58:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:58:26,397 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-12 22:58:26,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 22:58:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-12 22:58:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-12 22:58:26,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:26,401 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:26,401 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:26,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash 480492707, now seen corresponding path program 2 times [2018-10-12 22:58:26,402 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:27,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:58:27,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-12 22:58:27,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-12 22:58:27,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-12 22:58:27,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-12 22:58:27,148 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 21 states. [2018-10-12 22:58:28,267 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-12 22:58:28,519 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-12 22:58:29,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:58:29,594 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-12 22:58:29,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-12 22:58:29,595 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2018-10-12 22:58:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:58:29,596 INFO L225 Difference]: With dead ends: 117 [2018-10-12 22:58:29,598 INFO L226 Difference]: Without dead ends: 117 [2018-10-12 22:58:29,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2018-10-12 22:58:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-12 22:58:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-12 22:58:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-12 22:58:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-12 22:58:29,618 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-12 22:58:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:58:29,618 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-12 22:58:29,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-12 22:58:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-12 22:58:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-12 22:58:29,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:29,621 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:29,621 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:29,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:29,622 INFO L82 PathProgramCache]: Analyzing trace with hash -736747523, now seen corresponding path program 3 times [2018-10-12 22:58:29,622 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:30,186 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2018-10-12 22:58:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:30,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:58:30,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-12 22:58:30,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-12 22:58:30,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-12 22:58:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-10-12 22:58:30,701 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 26 states. [2018-10-12 22:58:32,524 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-12 22:58:32,715 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 22:58:32,909 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-10-12 22:58:33,473 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-12 22:58:33,757 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 22:58:34,030 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-12 22:58:34,254 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-12 22:58:34,842 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 22:58:35,125 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-10-12 22:58:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:58:35,155 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-12 22:58:35,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-12 22:58:35,156 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2018-10-12 22:58:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:58:35,159 INFO L225 Difference]: With dead ends: 130 [2018-10-12 22:58:35,159 INFO L226 Difference]: Without dead ends: 130 [2018-10-12 22:58:35,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 22:58:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-12 22:58:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-12 22:58:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-12 22:58:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-12 22:58:35,168 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-12 22:58:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:58:35,168 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-12 22:58:35,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-12 22:58:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-12 22:58:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-12 22:58:35,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:35,171 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:35,171 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:35,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:35,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1926594275, now seen corresponding path program 4 times [2018-10-12 22:58:35,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:35,842 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-12 22:58:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:36,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:58:36,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-12 22:58:36,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-12 22:58:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-12 22:58:36,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 22:58:36,812 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 33 states. [2018-10-12 22:58:38,134 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 22:58:38,480 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 22:58:38,736 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-12 22:58:38,932 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 22:58:39,285 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-12 22:58:39,465 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-12 22:58:39,712 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 22:58:39,955 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 22:58:40,267 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-12 22:58:40,718 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-12 22:58:41,042 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2018-10-12 22:58:41,415 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2018-10-12 22:58:41,757 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-10-12 22:58:42,023 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-12 22:58:42,314 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-12 22:58:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:58:43,150 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-12 22:58:43,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-12 22:58:43,151 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 118 [2018-10-12 22:58:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:58:43,153 INFO L225 Difference]: With dead ends: 143 [2018-10-12 22:58:43,153 INFO L226 Difference]: Without dead ends: 143 [2018-10-12 22:58:43,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=770, Invalid=2890, Unknown=0, NotChecked=0, Total=3660 [2018-10-12 22:58:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-12 22:58:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-12 22:58:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-12 22:58:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-12 22:58:43,163 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-12 22:58:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:58:43,164 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-12 22:58:43,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-12 22:58:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-12 22:58:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-12 22:58:43,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:43,167 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:43,167 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:43,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1606550973, now seen corresponding path program 5 times [2018-10-12 22:58:43,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:45,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:58:45,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-12 22:58:45,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-12 22:58:45,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-12 22:58:45,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-12 22:58:45,565 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 36 states. [2018-10-12 22:58:47,030 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 22:58:47,281 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-12 22:58:47,664 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-12 22:58:47,912 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 22:58:48,106 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 22:58:48,338 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-12 22:58:48,703 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-12 22:58:49,030 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-12 22:58:49,329 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 22:58:49,683 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-12 22:58:50,321 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 22:58:50,675 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-12 22:58:51,282 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2018-10-12 22:58:51,520 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-12 22:58:51,714 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-12 22:58:51,929 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 22:58:52,259 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-12 22:58:52,567 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 22:58:52,871 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-12 22:58:53,055 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 22:58:53,621 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 22:58:53,820 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 22:58:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:58:54,221 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-12 22:58:54,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-12 22:58:54,223 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 131 [2018-10-12 22:58:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:58:54,225 INFO L225 Difference]: With dead ends: 156 [2018-10-12 22:58:54,225 INFO L226 Difference]: Without dead ends: 156 [2018-10-12 22:58:54,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2018-10-12 22:58:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-12 22:58:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-12 22:58:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-12 22:58:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-12 22:58:54,235 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-12 22:58:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:58:54,235 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-12 22:58:54,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-12 22:58:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-12 22:58:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-12 22:58:54,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:58:54,238 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:58:54,238 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:58:54,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:58:54,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1086124323, now seen corresponding path program 6 times [2018-10-12 22:58:54,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:58:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:58:54,877 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-12 22:58:55,116 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-12 22:58:55,288 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-12 22:58:55,481 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-12 22:58:55,634 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-12 22:58:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:58:57,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:58:57,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-12 22:58:57,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-12 22:58:57,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-12 22:58:57,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 22:58:57,464 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 43 states. [2018-10-12 22:58:58,841 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-12 22:58:59,105 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-12 22:58:59,444 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 22:58:59,738 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 22:59:00,005 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 22:59:00,260 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-12 22:59:00,573 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 22:59:00,914 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 22:59:01,436 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 22:59:01,826 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2018-10-12 22:59:02,213 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2018-10-12 22:59:02,702 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2018-10-12 22:59:03,267 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-12 22:59:03,793 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2018-10-12 22:59:04,233 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-12 22:59:04,646 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-12 22:59:05,051 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2018-10-12 22:59:05,513 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2018-10-12 22:59:05,992 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-12 22:59:06,365 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-12 22:59:06,726 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-12 22:59:07,104 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-12 22:59:07,519 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-12 22:59:07,934 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-12 22:59:08,378 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-12 22:59:08,727 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-12 22:59:08,986 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-12 22:59:09,449 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 22:59:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:59:09,544 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-12 22:59:09,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 22:59:09,545 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 144 [2018-10-12 22:59:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:59:09,546 INFO L225 Difference]: With dead ends: 169 [2018-10-12 22:59:09,546 INFO L226 Difference]: Without dead ends: 169 [2018-10-12 22:59:09,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1315, Invalid=5165, Unknown=0, NotChecked=0, Total=6480 [2018-10-12 22:59:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-12 22:59:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-12 22:59:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-12 22:59:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-12 22:59:09,561 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-12 22:59:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:59:09,561 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-12 22:59:09,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-12 22:59:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-12 22:59:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-12 22:59:09,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:59:09,568 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:59:09,568 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:59:09,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:59:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -596231299, now seen corresponding path program 7 times [2018-10-12 22:59:09,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:59:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:59:10,690 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 22:59:10,874 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-10-12 22:59:11,812 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-12 22:59:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:59:14,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:59:14,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-12 22:59:14,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-12 22:59:14,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-12 22:59:14,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2018-10-12 22:59:14,246 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 47 states. [2018-10-12 22:59:16,186 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 22:59:16,484 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 22:59:16,833 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 22:59:17,302 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 22:59:17,656 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 22:59:17,933 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 22:59:18,256 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-12 22:59:18,770 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-12 22:59:19,457 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2018-10-12 22:59:20,040 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2018-10-12 22:59:20,477 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 135 [2018-10-12 22:59:20,999 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2018-10-12 22:59:21,550 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-12 22:59:22,229 WARN L178 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 148 [2018-10-12 22:59:22,836 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 151 [2018-10-12 22:59:23,665 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-12 22:59:24,145 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-12 22:59:24,680 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2018-10-12 22:59:25,272 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 147 [2018-10-12 22:59:25,895 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 150 [2018-10-12 22:59:26,354 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-12 22:59:26,798 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-12 22:59:27,289 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 133 [2018-10-12 22:59:27,852 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 136 [2018-10-12 22:59:28,490 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 139 [2018-10-12 22:59:28,989 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-12 22:59:29,403 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2018-10-12 22:59:29,844 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-12 22:59:30,330 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2018-10-12 22:59:30,802 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-12 22:59:31,275 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-10-12 22:59:31,668 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-12 22:59:31,959 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 22:59:32,216 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-12 22:59:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 22:59:32,257 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-12 22:59:32,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-12 22:59:32,258 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 157 [2018-10-12 22:59:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 22:59:32,259 INFO L225 Difference]: With dead ends: 182 [2018-10-12 22:59:32,259 INFO L226 Difference]: Without dead ends: 182 [2018-10-12 22:59:32,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=1579, Invalid=6431, Unknown=0, NotChecked=0, Total=8010 [2018-10-12 22:59:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-12 22:59:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-12 22:59:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-12 22:59:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-12 22:59:32,267 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-12 22:59:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 22:59:32,267 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-12 22:59:32,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-12 22:59:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-12 22:59:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-12 22:59:32,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 22:59:32,270 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 22:59:32,271 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 22:59:32,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 22:59:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1503531875, now seen corresponding path program 8 times [2018-10-12 22:59:32,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 22:59:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 22:59:33,073 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-12 22:59:33,285 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 22:59:33,514 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 22:59:33,740 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 22:59:33,969 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 22:59:34,198 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 22:59:34,452 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-12 22:59:34,720 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 22:59:34,999 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-12 22:59:35,240 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 22:59:35,662 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 22:59:35,904 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 22:59:36,184 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 22:59:36,438 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-12 22:59:36,650 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 22:59:36,847 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 22:59:37,042 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 22:59:37,240 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 22:59:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 22:59:39,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 22:59:39,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-12 22:59:39,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-12 22:59:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-12 22:59:39,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2018-10-12 22:59:39,251 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 53 states. [2018-10-12 22:59:41,083 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-12 22:59:41,515 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-12 22:59:41,949 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 22:59:42,507 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 22:59:42,923 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 22:59:43,260 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-12 22:59:43,652 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 22:59:44,017 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 22:59:44,543 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 22:59:44,935 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 22:59:45,433 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2018-10-12 22:59:45,978 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 152 [2018-10-12 22:59:46,619 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 162 [2018-10-12 22:59:47,410 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2018-10-12 22:59:48,063 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 168 [2018-10-12 22:59:48,537 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2018-10-12 22:59:49,100 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2018-10-12 22:59:49,691 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2018-10-12 22:59:50,320 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-12 22:59:51,030 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2018-10-12 22:59:51,526 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-12 22:59:52,068 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 147 [2018-10-12 22:59:52,638 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 156 [2018-10-12 22:59:53,237 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-12 22:59:53,827 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 162 [2018-10-12 22:59:54,295 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2018-10-12 22:59:54,781 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-12 22:59:55,278 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 144 [2018-10-12 22:59:55,803 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 147 [2018-10-12 22:59:56,326 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2018-10-12 22:59:56,818 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-12 22:59:57,297 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-12 22:59:57,786 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-12 22:59:58,298 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-12 22:59:58,820 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-12 22:59:59,359 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-12 22:59:59,805 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-12 23:00:00,132 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-12 23:00:00,431 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 23:00:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 23:00:00,478 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-12 23:00:00,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-12 23:00:00,478 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 170 [2018-10-12 23:00:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 23:00:00,480 INFO L225 Difference]: With dead ends: 195 [2018-10-12 23:00:00,480 INFO L226 Difference]: Without dead ends: 195 [2018-10-12 23:00:00,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=2016, Invalid=8084, Unknown=0, NotChecked=0, Total=10100 [2018-10-12 23:00:00,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-12 23:00:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-12 23:00:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-12 23:00:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-12 23:00:00,488 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-12 23:00:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 23:00:00,489 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-12 23:00:00,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-12 23:00:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-12 23:00:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-12 23:00:00,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 23:00:00,491 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 23:00:00,492 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 23:00:00,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 23:00:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash -445726403, now seen corresponding path program 9 times [2018-10-12 23:00:00,493 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 23:00:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 23:00:01,963 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-12 23:00:02,316 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 23:00:02,635 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 23:00:02,881 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-12 23:00:03,153 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 23:00:03,404 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 23:00:03,665 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-12 23:00:03,961 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-12 23:00:04,301 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 65 [2018-10-12 23:00:04,597 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 23:00:04,918 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 23:00:05,216 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 23:00:05,587 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-12 23:00:05,824 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-12 23:00:06,074 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 23:00:06,321 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 23:00:06,557 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 23:00:06,848 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-12 23:00:07,070 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-10-12 23:00:07,284 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-12 23:00:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 23:00:10,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 23:00:10,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-12 23:00:10,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-12 23:00:10,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-12 23:00:10,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2939, Unknown=0, NotChecked=0, Total=3080 [2018-10-12 23:00:10,492 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 56 states. [2018-10-12 23:00:12,650 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-12 23:00:13,062 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 23:00:13,516 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 23:00:14,172 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-12 23:00:14,640 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 23:00:15,012 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 23:00:15,456 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 23:00:16,185 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-12 23:00:16,834 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 23:00:17,361 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 23:00:18,037 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-10-12 23:00:18,478 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 23:00:19,132 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-12 23:00:20,051 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 173 [2018-10-12 23:00:20,788 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-12 23:00:21,163 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-12 23:00:21,616 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 23:00:22,335 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-12 23:00:23,041 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-12 23:00:23,662 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 23:00:24,025 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 23:00:24,441 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-12 23:00:24,811 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 23:00:25,433 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-12 23:00:25,840 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 23:00:26,194 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-12 23:00:26,624 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-12 23:00:27,228 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-12 23:00:27,893 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 23:00:28,303 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 23:00:28,634 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 23:00:29,039 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 23:00:29,593 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-12 23:00:30,391 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-10-12 23:00:30,992 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 152 [2018-10-12 23:00:31,354 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-12 23:00:31,744 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-12 23:00:32,248 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2018-10-12 23:00:32,890 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 23:00:33,263 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-12 23:00:33,570 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 23:00:33,949 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 23:00:34,596 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 23:00:34,916 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 23:00:35,583 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 23:00:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 23:00:35,684 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-12 23:00:35,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-12 23:00:35,685 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 183 [2018-10-12 23:00:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 23:00:35,686 INFO L225 Difference]: With dead ends: 208 [2018-10-12 23:00:35,687 INFO L226 Difference]: Without dead ends: 208 [2018-10-12 23:00:35,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2018-10-12 23:00:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-12 23:00:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-12 23:00:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-12 23:00:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-12 23:00:35,694 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-12 23:00:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 23:00:35,695 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-12 23:00:35,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-12 23:00:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-12 23:00:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-12 23:00:35,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 23:00:35,697 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 23:00:35,698 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 23:00:35,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 23:00:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1136453027, now seen corresponding path program 10 times [2018-10-12 23:00:35,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 23:00:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 23:00:37,172 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 23:00:37,668 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 23:00:38,141 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 23:00:38,570 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 23:00:39,007 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 23:00:39,454 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 23:00:39,892 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-12 23:00:40,362 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 23:00:40,879 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-12 23:00:41,351 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 23:00:41,843 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 23:00:42,338 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 23:00:42,982 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 62 [2018-10-12 23:00:43,371 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 23:00:43,788 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 23:00:44,164 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 23:00:44,554 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 23:00:44,934 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 23:00:45,205 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 23:00:45,470 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 23:00:45,746 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 23:00:46,016 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 23:00:46,287 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 23:00:46,510 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-12 23:00:46,739 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 23:00:46,956 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 23:00:47,178 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 23:00:47,416 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 23:00:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 23:00:50,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 23:00:50,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-12 23:00:50,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-12 23:00:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-12 23:00:50,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2018-10-12 23:00:50,102 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 63 states. [2018-10-12 23:00:51,316 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-12 23:00:51,625 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 23:00:52,127 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-12 23:00:52,616 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 23:00:53,256 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 23:00:53,773 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 23:00:54,172 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-12 23:00:54,605 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 23:00:55,063 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-12 23:00:55,629 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-12 23:00:56,139 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 23:00:56,772 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 187 [2018-10-12 23:00:57,468 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 181 [2018-10-12 23:00:58,363 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-12 23:00:59,295 WARN L178 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-12 23:01:00,204 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-12 23:01:00,832 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-12 23:01:01,577 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2018-10-12 23:01:02,444 WARN L178 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-12 23:01:03,371 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-12 23:01:04,254 WARN L178 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2018-10-12 23:01:04,865 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-12 23:01:05,535 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 179 [2018-10-12 23:01:06,273 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2018-10-12 23:01:07,072 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-12 23:01:07,880 WARN L178 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2018-10-12 23:01:08,537 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2018-10-12 23:01:09,217 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 170 [2018-10-12 23:01:09,928 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2018-10-12 23:01:10,713 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-12 23:01:11,511 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-12 23:01:12,106 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-12 23:01:12,738 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 168 [2018-10-12 23:01:13,501 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-12 23:01:14,290 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-12 23:01:15,101 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 181 [2018-10-12 23:01:15,698 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2018-10-12 23:01:16,304 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2018-10-12 23:01:16,935 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 165 [2018-10-12 23:01:17,608 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2018-10-12 23:01:18,290 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2018-10-12 23:01:18,943 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2018-10-12 23:01:19,541 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-12 23:01:20,155 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2018-10-12 23:01:20,791 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-12 23:01:21,437 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-12 23:01:21,987 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-12 23:01:22,558 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-12 23:01:22,980 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-12 23:01:23,351 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 23:01:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 23:01:23,376 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-12 23:01:23,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-12 23:01:23,377 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 196 [2018-10-12 23:01:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 23:01:23,379 INFO L225 Difference]: With dead ends: 221 [2018-10-12 23:01:23,379 INFO L226 Difference]: Without dead ends: 221 [2018-10-12 23:01:23,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=2873, Invalid=11647, Unknown=0, NotChecked=0, Total=14520 [2018-10-12 23:01:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-12 23:01:23,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-12 23:01:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-12 23:01:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-12 23:01:23,384 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-12 23:01:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 23:01:23,385 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-12 23:01:23,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-12 23:01:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-12 23:01:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-12 23:01:23,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 23:01:23,386 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 23:01:23,387 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 23:01:23,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 23:01:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1122473725, now seen corresponding path program 11 times [2018-10-12 23:01:23,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 23:01:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 23:01:24,873 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-12 23:01:25,518 WARN L178 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 23:01:26,187 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 23:01:26,879 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-12 23:01:27,561 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 23:01:28,238 WARN L178 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 23:01:28,981 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-12 23:01:29,724 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-12 23:01:30,493 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-12 23:01:31,211 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 23:01:31,975 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 23:01:32,701 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-12 23:01:33,386 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-12 23:01:33,967 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-12 23:01:34,597 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 23:01:35,143 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 23:01:35,681 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 23:01:36,218 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-12 23:01:36,546 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 23:01:36,874 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 23:01:37,202 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 23:01:37,529 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 23:01:37,903 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-12 23:01:38,167 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 23:01:38,434 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 23:01:38,698 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 23:01:38,960 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 23:01:39,343 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-12 23:01:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 23:01:43,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 23:01:43,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-12 23:01:43,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-12 23:01:43,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-12 23:01:43,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2018-10-12 23:01:43,200 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 67 states. [2018-10-12 23:01:45,576 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 23:01:45,951 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 23:01:46,490 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 23:01:47,092 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-12 23:01:47,969 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-12 23:01:48,586 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 23:01:49,070 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 23:01:49,696 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-12 23:01:50,569 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-12 23:01:51,717 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2018-10-12 23:01:52,683 WARN L178 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-12 23:01:53,364 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2018-10-12 23:01:54,112 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-12 23:01:55,087 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-12 23:01:56,213 WARN L178 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2018-10-12 23:01:57,225 WARN L178 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 214 [2018-10-12 23:01:57,934 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2018-10-12 23:01:58,721 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 198 [2018-10-12 23:01:59,658 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-12 23:02:00,686 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2018-10-12 23:02:01,725 WARN L178 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-12 23:02:02,409 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2018-10-12 23:02:03,116 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2018-10-12 23:02:03,889 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 197 [2018-10-12 23:02:04,745 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200 [2018-10-12 23:02:05,678 WARN L178 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 203 [2018-10-12 23:02:06,338 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2018-10-12 23:02:07,032 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-12 23:02:07,854 WARN L178 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2018-10-12 23:02:08,749 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2018-10-12 23:02:09,676 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2018-10-12 23:02:10,417 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-12 23:02:11,085 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 179 [2018-10-12 23:02:11,832 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 185 [2018-10-12 23:02:12,667 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2018-10-12 23:02:13,527 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 191 [2018-10-12 23:02:14,202 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2018-10-12 23:02:14,891 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2018-10-12 23:02:15,701 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2018-10-12 23:02:16,518 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 187 [2018-10-12 23:02:17,346 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2018-10-12 23:02:18,014 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2018-10-12 23:02:18,672 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2018-10-12 23:02:19,377 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 173 [2018-10-12 23:02:20,165 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176 [2018-10-12 23:02:20,950 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 179 [2018-10-12 23:02:21,589 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-12 23:02:22,209 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2018-10-12 23:02:22,882 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-12 23:02:23,594 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2018-10-12 23:02:24,295 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-12 23:02:24,915 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-12 23:02:25,584 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-10-12 23:02:26,041 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 23:02:26,446 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-12 23:02:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 23:02:26,521 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-12 23:02:26,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-12 23:02:26,522 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 209 [2018-10-12 23:02:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 23:02:26,524 INFO L225 Difference]: With dead ends: 234 [2018-10-12 23:02:26,524 INFO L226 Difference]: Without dead ends: 234 [2018-10-12 23:02:26,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3370 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=3233, Invalid=13537, Unknown=0, NotChecked=0, Total=16770 [2018-10-12 23:02:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-12 23:02:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-12 23:02:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-12 23:02:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-12 23:02:26,529 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-12 23:02:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 23:02:26,529 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-12 23:02:26,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-12 23:02:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-12 23:02:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-12 23:02:26,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 23:02:26,531 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 23:02:26,531 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 23:02:26,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 23:02:26,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2019387363, now seen corresponding path program 12 times [2018-10-12 23:02:26,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 23:02:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 23:02:29,166 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 393 DAG size of output: 74 [2018-10-12 23:02:30,271 WARN L178 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 23:02:31,387 WARN L178 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 23:02:32,474 WARN L178 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 74 [2018-10-12 23:02:33,592 WARN L178 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 23:02:34,716 WARN L178 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 23:02:35,890 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-12 23:02:37,099 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-12 23:02:38,342 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 411 DAG size of output: 82 [2018-10-12 23:02:39,539 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-12 23:02:40,821 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-12 23:02:42,006 WARN L178 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-12 23:02:43,222 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 293 DAG size of output: 73 [2018-10-12 23:02:44,175 WARN L178 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 74 [2018-10-12 23:02:45,152 WARN L178 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-12 23:02:46,197 WARN L178 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-12 23:02:47,191 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-12 23:02:48,104 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 70 [2018-10-12 23:02:48,635 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 23:02:49,168 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 23:02:49,706 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 23:02:50,248 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 23:02:50,857 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 62 [2018-10-12 23:02:51,298 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 23:02:51,731 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 23:02:52,163 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 23:02:52,597 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 23:02:53,023 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 23:02:53,333 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 23:02:53,640 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 23:02:53,954 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 23:02:54,261 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 23:02:54,563 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 23:02:54,813 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-12 23:02:55,077 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 23:02:55,355 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 23:02:55,589 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 23:02:55,857 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 23:02:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 23:02:59,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 23:02:59,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-12 23:02:59,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-12 23:02:59,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-12 23:02:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4652, Unknown=0, NotChecked=0, Total=5256 [2018-10-12 23:02:59,126 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 73 states. [2018-10-12 23:03:01,776 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 23:03:02,187 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-12 23:03:02,820 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 23:03:03,540 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-12 23:03:04,538 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-10-12 23:03:05,280 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-12 23:03:05,830 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 23:03:06,524 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-12 23:03:07,154 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-12 23:03:08,059 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 23:03:08,683 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-12 23:03:09,446 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 214 [2018-10-12 23:03:10,334 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2018-10-12 23:03:11,368 WARN L178 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2018-10-12 23:03:12,636 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-12 23:03:13,756 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-12 23:03:14,465 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2018-10-12 23:03:15,373 WARN L178 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-12 23:03:16,463 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 239 [2018-10-12 23:03:17,615 WARN L178 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 242 [2018-10-12 23:03:18,812 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-12 23:03:19,511 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 209 [2018-10-12 23:03:20,295 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2018-10-12 23:03:21,248 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2018-10-12 23:03:22,304 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-12 23:03:23,310 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-12 23:03:24,022 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-12 23:03:24,805 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2018-10-12 23:03:25,779 WARN L178 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 216 [2018-10-12 23:03:26,797 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-12 23:03:27,805 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 222 [2018-10-12 23:03:28,519 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-12 23:03:29,267 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-12 23:03:30,120 WARN L178 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-12 23:03:31,029 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 202 [2018-10-12 23:03:31,985 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-12 23:03:32,696 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2018-10-12 23:03:33,462 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 186 [2018-10-12 23:03:34,306 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-12 23:03:35,231 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-12 23:03:36,128 WARN L178 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-12 23:03:36,866 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-12 23:03:37,619 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 184 [2018-10-12 23:03:38,459 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2018-10-12 23:03:39,335 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2018-10-12 23:03:40,244 WARN L178 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-12 23:03:40,926 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-12 23:03:41,640 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 177 [2018-10-12 23:03:42,494 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-12 23:03:43,300 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-12 23:03:44,116 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-12 23:03:44,821 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2018-10-12 23:03:45,517 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2018-10-12 23:03:46,249 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-10-12 23:03:47,030 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 177 [2018-10-12 23:03:47,851 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-12 23:03:48,499 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-12 23:03:49,158 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-12 23:03:49,643 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 23:03:50,111 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 23:03:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 23:03:50,198 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-12 23:03:50,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-12 23:03:50,199 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 222 [2018-10-12 23:03:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 23:03:50,201 INFO L225 Difference]: With dead ends: 247 [2018-10-12 23:03:50,201 INFO L226 Difference]: Without dead ends: 247 [2018-10-12 23:03:50,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=3886, Invalid=15854, Unknown=0, NotChecked=0, Total=19740 [2018-10-12 23:03:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-12 23:03:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-12 23:03:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-12 23:03:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-12 23:03:50,208 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-12 23:03:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 23:03:50,208 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-12 23:03:50,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-12 23:03:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-12 23:03:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-12 23:03:50,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 23:03:50,210 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 23:03:50,210 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 23:03:50,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 23:03:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1440957251, now seen corresponding path program 13 times [2018-10-12 23:03:50,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 23:03:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 23:03:52,175 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-12 23:03:53,938 WARN L178 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-12 23:03:55,549 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 23:03:57,139 WARN L178 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 23:03:58,741 WARN L178 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-12 23:04:00,287 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 23:04:01,870 WARN L178 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 23:04:03,573 WARN L178 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-12 23:04:05,401 WARN L178 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 559 DAG size of output: 88 [2018-10-12 23:04:07,247 WARN L178 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 572 DAG size of output: 90 [2018-10-12 23:04:09,068 WARN L178 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-12 23:04:10,889 WARN L178 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-12 23:04:12,779 WARN L178 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 554 DAG size of output: 83 [2018-10-12 23:04:14,356 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 398 DAG size of output: 81 [2018-10-12 23:04:15,628 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 385 DAG size of output: 82 [2018-10-12 23:04:16,859 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-12 23:04:18,191 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-12 23:04:19,446 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 380 DAG size of output: 77 [2018-10-12 23:04:20,653 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 300 DAG size of output: 75 [2018-10-12 23:04:21,414 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-12 23:04:22,183 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 23:04:23,013 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 23:04:23,806 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-12 23:04:24,530 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-12 23:04:25,119 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-12 23:04:25,703 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 23:04:26,293 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 23:04:26,877 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 23:04:27,483 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-12 23:04:27,843 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 23:04:28,276 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 23:04:28,634 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 23:04:28,988 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 23:04:29,400 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-12 23:04:29,728 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 23:04:30,012 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 23:04:30,307 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 23:04:30,582 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 23:04:30,906 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-12 23:04:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 23:04:35,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 23:04:35,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-12 23:04:35,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-12 23:04:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-12 23:04:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2018-10-12 23:04:35,691 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 77 states. [2018-10-12 23:04:38,583 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-12 23:04:39,051 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 23:04:39,732 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-12 23:04:40,488 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-12 23:04:41,547 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-12 23:04:42,322 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-12 23:04:42,962 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 23:04:43,769 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-12 23:04:44,888 WARN L178 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-12 23:04:46,369 WARN L178 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 242 [2018-10-12 23:04:47,637 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 261 DAG size of output: 245 [2018-10-12 23:04:48,535 WARN L178 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2018-10-12 23:04:49,540 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-12 23:04:50,627 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 235 [2018-10-12 23:04:52,042 WARN L178 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 238 [2018-10-12 23:04:53,319 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 264 DAG size of output: 241 [2018-10-12 23:04:54,174 WARN L178 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 231 [2018-10-12 23:04:55,117 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-12 23:04:56,246 WARN L178 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 260 [2018-10-12 23:04:57,719 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 281 DAG size of output: 261 [2018-10-12 23:04:59,070 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 287 DAG size of output: 264 [2018-10-12 23:04:59,913 WARN L178 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 225 [2018-10-12 23:05:00,883 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 216 [2018-10-12 23:05:02,007 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 229 [2018-10-12 23:05:03,399 WARN L178 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 232 [2018-10-12 23:05:04,731 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 261 DAG size of output: 235 [2018-10-12 23:05:05,642 WARN L178 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 226 [2018-10-12 23:05:06,597 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-12 23:05:07,741 WARN L178 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 246 [2018-10-12 23:05:08,945 WARN L178 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 247 [2018-10-12 23:05:10,245 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 275 DAG size of output: 250 [2018-10-12 23:05:11,087 WARN L178 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 219 [2018-10-12 23:05:11,900 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-12 23:05:12,867 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 218 [2018-10-12 23:05:13,918 WARN L178 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2018-10-12 23:05:15,069 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 224 [2018-10-12 23:05:15,876 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 213 [2018-10-12 23:05:16,781 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 207 [2018-10-12 23:05:17,864 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 226 [2018-10-12 23:05:19,002 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 228 [2018-10-12 23:05:20,270 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 255 DAG size of output: 231 [2018-10-12 23:05:21,110 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 206 [2018-10-12 23:05:21,967 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2018-10-12 23:05:22,955 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2018-10-12 23:05:24,006 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-10-12 23:05:25,159 WARN L178 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 212 [2018-10-12 23:05:26,015 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 202 [2018-10-12 23:05:26,835 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-12 23:05:27,771 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 206 [2018-10-12 23:05:28,726 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 209 [2018-10-12 23:05:29,759 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 212 [2018-10-12 23:05:30,606 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-12 23:05:31,420 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188 [2018-10-12 23:05:32,255 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2018-10-12 23:05:33,148 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-12 23:05:34,067 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2018-10-12 23:05:34,829 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2018-10-12 23:05:35,570 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-12 23:05:36,321 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-12 23:05:37,160 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2018-10-12 23:05:37,989 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-12 23:05:38,716 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-12 23:05:39,426 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-12 23:05:39,989 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-12 23:05:40,485 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-12 23:05:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 23:05:40,571 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-12 23:05:40,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-12 23:05:40,571 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 235 [2018-10-12 23:05:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 23:05:40,573 INFO L225 Difference]: With dead ends: 260 [2018-10-12 23:05:40,573 INFO L226 Difference]: Without dead ends: 260 [2018-10-12 23:05:40,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 102.3s TimeCoverageRelationStatistics Valid=3811, Invalid=18539, Unknown=0, NotChecked=0, Total=22350 [2018-10-12 23:05:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-12 23:05:40,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 249. [2018-10-12 23:05:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-12 23:05:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-12 23:05:40,579 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 235 [2018-10-12 23:05:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 23:05:40,579 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-12 23:05:40,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-12 23:05:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-12 23:05:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-12 23:05:40,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 23:05:40,580 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 23:05:40,580 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 23:05:40,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 23:05:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1547462109, now seen corresponding path program 14 times [2018-10-12 23:05:40,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 23:05:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 23:05:45,424 WARN L178 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 808 DAG size of output: 86 [2018-10-12 23:05:48,191 WARN L178 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-12 23:05:50,834 WARN L178 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-12 23:05:53,524 WARN L178 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 806 DAG size of output: 86 [2018-10-12 23:05:56,185 WARN L178 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-12 23:05:58,898 WARN L178 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-12 23:06:01,576 WARN L178 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 801 DAG size of output: 81 [2018-10-12 23:06:04,625 WARN L178 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 815 DAG size of output: 94 [2018-10-12 23:06:07,681 WARN L178 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 828 DAG size of output: 96 [2018-10-12 23:06:10,650 WARN L178 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 812 DAG size of output: 91