java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 18:35:09,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 18:35:09,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 18:35:09,153 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 18:35:09,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 18:35:09,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 18:35:09,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 18:35:09,158 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 18:35:09,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 18:35:09,160 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 18:35:09,161 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 18:35:09,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 18:35:09,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 18:35:09,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 18:35:09,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 18:35:09,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 18:35:09,166 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 18:35:09,168 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 18:35:09,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 18:35:09,175 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 18:35:09,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 18:35:09,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 18:35:09,184 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 18:35:09,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 18:35:09,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 18:35:09,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 18:35:09,190 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 18:35:09,190 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 18:35:09,193 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 18:35:09,196 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 18:35:09,196 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 18:35:09,197 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-14 18:35:09,197 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-14 18:35:09,198 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-14 18:35:09,199 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-14 18:35:09,199 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-14 18:35:09,202 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 18:35:09,220 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 18:35:09,220 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 18:35:09,222 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 18:35:09,226 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 18:35:09,226 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 18:35:09,226 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 18:35:09,227 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 18:35:09,227 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 18:35:09,228 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 18:35:09,228 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 18:35:09,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 18:35:09,228 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 18:35:09,228 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 18:35:09,230 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 18:35:09,230 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 18:35:09,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 18:35:09,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 18:35:09,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 18:35:09,323 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 18:35:09,323 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 18:35:09,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl [2018-10-14 18:35:09,325 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl' [2018-10-14 18:35:09,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 18:35:09,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-14 18:35:09,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 18:35:09,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 18:35:09,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 18:35:09,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... [2018-10-14 18:35:09,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 18:35:09,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 18:35:09,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 18:35:09,458 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 18:35:09,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 18:35:09,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 18:35:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 18:35:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 18:35:10,133 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 18:35:10,134 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:35:10 BoogieIcfgContainer [2018-10-14 18:35:10,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 18:35:10,134 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-14 18:35:10,135 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-14 18:35:10,136 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-14 18:35:10,140 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:35:10" (1/1) ... [2018-10-14 18:35:10,149 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-14 18:35:10,149 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-14 18:35:10,193 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-14 18:35:10,281 INFO L219 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-14 18:35:10,298 INFO L282 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-14 18:35:10,377 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-14 18:35:35,463 INFO L315 AbstractInterpreter]: Visited 82 different actions 99 times. Merged at 15 different actions 16 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-10-14 18:35:35,465 INFO L306 apSepIcfgTransformer]: finished equality analysis [2018-10-14 18:35:35,469 INFO L318 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-14 18:35:35,585 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select |v_#locv_ULTIMATE.start_write~int_old_#memory_int_4_1_1| |v_ULTIMATE.start_write~int_#ptr.base_12|) at (assume write~int_old_#memory_int[write~int_#ptr.base := write~int_old_#memory_int[write~int_#ptr.base][write~int_#ptr.offset := write~int_#value]] == #memory_int;) [2018-10-14 18:35:35,659 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select (select |#loc_#memory_int_(Array-Int-(Array-Int-#locsort2))| |v_ULTIMATE.start_read~int_#ptr.base_7|) |v_ULTIMATE.start_read~int_#ptr.offset_5|) at (assume #memory_int[read~int_#ptr.base][read~int_#ptr.offset] == read~int_#value;) [2018-10-14 18:35:35,661 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-14 18:35:35,662 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-14 18:35:35,662 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-14 18:35:35,662 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-14 18:35:35,662 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-14 18:35:35,662 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-14 18:35:35,663 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-14 18:35:35,663 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-14 18:35:35,663 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-14 18:35:35,663 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-14 18:35:35,664 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-14 18:35:35,664 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-14 18:35:35,664 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-14 18:35:35,664 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-14 18:35:35,664 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-14 18:35:35,668 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-14 18:35:35,691 INFO L202 PluginConnector]: Adding new model openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.10 06:35:35 BasicIcfg [2018-10-14 18:35:35,692 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-14 18:35:35,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 18:35:35,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 18:35:35,696 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 18:35:35,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 06:35:09" (1/3) ... [2018-10-14 18:35:35,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5fb612 and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:35:35, skipping insertion in model container [2018-10-14 18:35:35,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:35:10" (2/3) ... [2018-10-14 18:35:35,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5fb612 and model type openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:35:35, skipping insertion in model container [2018-10-14 18:35:35,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.10 06:35:35" (3/3) ... [2018-10-14 18:35:35,702 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-14 18:35:35,713 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 18:35:35,722 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 18:35:35,741 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 18:35:35,772 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 18:35:35,773 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 18:35:35,773 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 18:35:35,773 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 18:35:35,774 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 18:35:35,774 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 18:35:35,774 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 18:35:35,774 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 18:35:35,774 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 18:35:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-10-14 18:35:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-14 18:35:35,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:35,800 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:35:35,802 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:35,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1586642623, now seen corresponding path program 1 times [2018-10-14 18:35:35,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:36,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 18:35:36,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-14 18:35:36,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 18:35:36,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 18:35:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-14 18:35:36,797 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 12 states. [2018-10-14 18:35:37,547 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 18:35:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:35:38,014 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-14 18:35:38,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 18:35:38,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-10-14 18:35:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:35:38,027 INFO L225 Difference]: With dead ends: 94 [2018-10-14 18:35:38,027 INFO L226 Difference]: Without dead ends: 94 [2018-10-14 18:35:38,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-10-14 18:35:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-14 18:35:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2018-10-14 18:35:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-14 18:35:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-14 18:35:38,071 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 69 [2018-10-14 18:35:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:35:38,072 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-14 18:35:38,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 18:35:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-14 18:35:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-14 18:35:38,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:38,076 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:35:38,076 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:38,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1407558253, now seen corresponding path program 1 times [2018-10-14 18:35:38,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:38,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:35:38,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 18:35:38,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 18:35:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 18:35:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-14 18:35:38,822 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-14 18:35:40,518 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-14 18:35:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:35:40,863 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-14 18:35:40,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 18:35:40,865 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-14 18:35:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:35:40,868 INFO L225 Difference]: With dead ends: 107 [2018-10-14 18:35:40,868 INFO L226 Difference]: Without dead ends: 107 [2018-10-14 18:35:40,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 18:35:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-14 18:35:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2018-10-14 18:35:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-14 18:35:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-14 18:35:40,878 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 82 [2018-10-14 18:35:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:35:40,879 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-14 18:35:40,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 18:35:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-14 18:35:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-14 18:35:40,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:40,881 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:35:40,882 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:40,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 657074559, now seen corresponding path program 2 times [2018-10-14 18:35:40,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:41,402 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-10-14 18:35:41,611 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-14 18:35:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:42,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:35:42,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 18:35:42,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 18:35:42,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 18:35:42,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2018-10-14 18:35:42,103 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 27 states. [2018-10-14 18:35:43,739 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-14 18:35:44,938 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 18:35:45,116 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-14 18:35:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:35:46,833 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-14 18:35:46,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-14 18:35:46,833 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 95 [2018-10-14 18:35:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:35:46,835 INFO L225 Difference]: With dead ends: 120 [2018-10-14 18:35:46,835 INFO L226 Difference]: Without dead ends: 120 [2018-10-14 18:35:46,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2018-10-14 18:35:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-14 18:35:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2018-10-14 18:35:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-14 18:35:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-14 18:35:46,846 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 95 [2018-10-14 18:35:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:35:46,847 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-14 18:35:46,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 18:35:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-14 18:35:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-14 18:35:46,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:46,849 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:35:46,849 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:46,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1722732627, now seen corresponding path program 3 times [2018-10-14 18:35:46,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:47,498 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2018-10-14 18:35:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:48,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:35:48,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 18:35:48,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 18:35:48,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 18:35:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 18:35:48,516 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 34 states. [2018-10-14 18:35:50,066 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-14 18:35:50,323 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-10-14 18:35:50,619 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 18:35:52,023 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-14 18:35:52,244 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-14 18:35:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:35:54,573 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-14 18:35:54,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-14 18:35:54,574 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 108 [2018-10-14 18:35:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:35:54,577 INFO L225 Difference]: With dead ends: 133 [2018-10-14 18:35:54,577 INFO L226 Difference]: Without dead ends: 133 [2018-10-14 18:35:54,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=694, Invalid=4562, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 18:35:54,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-14 18:35:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2018-10-14 18:35:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-14 18:35:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-14 18:35:54,589 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 108 [2018-10-14 18:35:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:35:54,590 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-14 18:35:54,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 18:35:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-14 18:35:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-14 18:35:54,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:35:54,592 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:35:54,593 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:35:54,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:35:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash -417455041, now seen corresponding path program 4 times [2018-10-14 18:35:54,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:35:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:35:55,448 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2018-10-14 18:35:55,961 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2018-10-14 18:35:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:35:58,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:35:58,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 18:35:58,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 18:35:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 18:35:58,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1546, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 18:35:58,009 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 41 states. [2018-10-14 18:35:59,661 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-14 18:35:59,985 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-14 18:36:00,819 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:36:01,191 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-14 18:36:01,418 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 18:36:01,671 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-10-14 18:36:01,968 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-14 18:36:02,157 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-14 18:36:02,484 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:36:02,866 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-14 18:36:03,090 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 18:36:03,379 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2018-10-14 18:36:03,684 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2018-10-14 18:36:04,823 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-14 18:36:05,017 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 18:36:06,091 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-14 18:36:06,451 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-14 18:36:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:36:07,279 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-14 18:36:07,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-14 18:36:07,279 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 121 [2018-10-14 18:36:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:36:07,281 INFO L225 Difference]: With dead ends: 146 [2018-10-14 18:36:07,281 INFO L226 Difference]: Without dead ends: 146 [2018-10-14 18:36:07,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=903, Invalid=6929, Unknown=0, NotChecked=0, Total=7832 [2018-10-14 18:36:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-14 18:36:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2018-10-14 18:36:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-14 18:36:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-14 18:36:07,291 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 121 [2018-10-14 18:36:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:36:07,292 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-14 18:36:07,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 18:36:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-14 18:36:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-14 18:36:07,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:36:07,295 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:36:07,295 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:36:07,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:36:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1720013587, now seen corresponding path program 5 times [2018-10-14 18:36:07,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:36:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:36:07,967 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 18:36:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:36:11,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:36:11,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 18:36:11,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 18:36:11,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 18:36:11,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2016, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 18:36:11,010 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 47 states. [2018-10-14 18:36:13,683 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-14 18:36:13,963 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:36:14,417 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 18:36:14,743 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-14 18:36:15,133 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2018-10-14 18:36:15,618 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2018-10-14 18:36:15,913 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-14 18:36:16,126 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-14 18:36:16,380 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-14 18:36:16,763 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 18:36:17,029 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:36:17,507 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-14 18:36:17,736 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-14 18:36:18,094 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:36:18,323 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:36:18,707 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2018-10-14 18:36:19,140 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2018-10-14 18:36:19,635 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2018-10-14 18:36:20,070 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 130 [2018-10-14 18:36:20,392 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2018-10-14 18:36:20,811 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-14 18:36:21,186 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2018-10-14 18:36:21,493 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2018-10-14 18:36:21,870 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2018-10-14 18:36:22,488 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-14 18:36:22,952 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2018-10-14 18:36:23,365 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2018-10-14 18:36:23,725 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2018-10-14 18:36:24,078 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-14 18:36:24,396 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2018-10-14 18:36:24,731 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-14 18:36:25,090 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-14 18:36:25,293 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-14 18:36:25,478 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-14 18:36:25,688 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-14 18:36:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:36:25,726 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-14 18:36:25,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-14 18:36:25,730 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 134 [2018-10-14 18:36:25,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:36:25,731 INFO L225 Difference]: With dead ends: 159 [2018-10-14 18:36:25,731 INFO L226 Difference]: Without dead ends: 159 [2018-10-14 18:36:25,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=1256, Invalid=8844, Unknown=0, NotChecked=0, Total=10100 [2018-10-14 18:36:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-14 18:36:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2018-10-14 18:36:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-14 18:36:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-14 18:36:25,741 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 134 [2018-10-14 18:36:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:36:25,741 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-14 18:36:25,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 18:36:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-14 18:36:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-14 18:36:25,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:36:25,744 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:36:25,745 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:36:25,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:36:25,746 INFO L82 PathProgramCache]: Analyzing trace with hash -193319169, now seen corresponding path program 6 times [2018-10-14 18:36:25,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:36:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:36:26,498 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-10-14 18:36:26,631 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:36:26,869 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:36:27,033 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-14 18:36:27,213 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:36:27,352 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:36:27,759 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-14 18:36:28,014 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-14 18:36:28,204 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:36:28,411 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:36:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:36:30,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:36:30,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 18:36:30,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 18:36:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 18:36:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2496, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 18:36:30,473 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 52 states. [2018-10-14 18:36:32,906 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 18:36:33,184 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-14 18:36:33,589 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 18:36:34,075 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:36:34,456 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-14 18:36:34,909 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 142 [2018-10-14 18:36:35,451 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2018-10-14 18:36:35,781 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-14 18:36:36,043 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 18:36:36,555 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2018-10-14 18:36:37,211 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2018-10-14 18:36:37,793 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 155 [2018-10-14 18:36:38,402 WARN L179 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 138 [2018-10-14 18:36:39,135 WARN L179 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 161 [2018-10-14 18:36:39,644 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2018-10-14 18:36:40,076 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 138 [2018-10-14 18:36:40,634 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 160 [2018-10-14 18:36:41,370 WARN L179 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 163 [2018-10-14 18:36:42,031 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 166 [2018-10-14 18:36:42,462 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-14 18:36:42,970 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 165 [2018-10-14 18:36:43,503 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2018-10-14 18:36:43,969 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 140 [2018-10-14 18:36:44,471 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2018-10-14 18:36:44,986 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2018-10-14 18:36:45,520 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2018-10-14 18:36:45,921 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2018-10-14 18:36:46,399 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 151 [2018-10-14 18:36:46,849 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-14 18:36:47,236 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-14 18:36:47,677 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2018-10-14 18:36:48,320 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2018-10-14 18:36:48,898 WARN L179 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2018-10-14 18:36:49,321 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 131 [2018-10-14 18:36:49,761 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2018-10-14 18:36:50,168 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-14 18:36:50,547 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2018-10-14 18:36:51,007 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-14 18:36:51,274 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 18:36:51,516 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-14 18:36:51,789 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-14 18:36:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:36:51,825 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-14 18:36:51,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-14 18:36:51,826 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 147 [2018-10-14 18:36:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:36:51,827 INFO L225 Difference]: With dead ends: 172 [2018-10-14 18:36:51,827 INFO L226 Difference]: Without dead ends: 172 [2018-10-14 18:36:51,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=1574, Invalid=10636, Unknown=0, NotChecked=0, Total=12210 [2018-10-14 18:36:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-14 18:36:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2018-10-14 18:36:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-14 18:36:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-14 18:36:51,837 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 147 [2018-10-14 18:36:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:36:51,837 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-14 18:36:51,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 18:36:51,838 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-14 18:36:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-14 18:36:51,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:36:51,842 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:36:51,842 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:36:51,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:36:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash 836114989, now seen corresponding path program 7 times [2018-10-14 18:36:51,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:36:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:36:52,906 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-14 18:36:53,039 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 18:36:53,194 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 18:36:53,327 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 18:36:53,485 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-14 18:36:53,669 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 18:36:53,893 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 18:36:54,117 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2018-10-14 18:36:54,441 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-10-14 18:36:54,650 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-14 18:36:54,826 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-14 18:36:54,998 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-14 18:36:55,170 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-14 18:36:55,345 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-14 18:36:55,629 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2018-10-14 18:36:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:36:58,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:36:58,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 18:36:58,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 18:36:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 18:36:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=3055, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 18:36:58,754 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 57 states. [2018-10-14 18:37:02,055 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-14 18:37:02,385 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:37:02,800 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-14 18:37:03,472 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-14 18:37:03,949 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:37:04,594 WARN L179 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 151 [2018-10-14 18:37:05,283 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 178 [2018-10-14 18:37:05,698 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-14 18:37:06,010 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-14 18:37:06,610 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2018-10-14 18:37:07,250 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 18:37:07,725 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-14 18:37:08,283 WARN L179 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 156 [2018-10-14 18:37:08,978 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 188 [2018-10-14 18:37:09,440 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-14 18:37:09,753 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 18:37:10,133 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 18:37:10,740 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-14 18:37:11,150 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:37:11,481 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-14 18:37:11,874 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 18:37:12,262 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-14 18:37:12,548 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-14 18:37:13,106 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2018-10-14 18:37:13,891 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-14 18:37:14,531 WARN L179 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 160 [2018-10-14 18:37:14,848 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-14 18:37:15,217 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 18:37:15,582 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-14 18:37:15,863 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-14 18:37:16,198 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-14 18:37:16,745 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:37:17,092 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-14 18:37:17,403 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:37:17,741 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-14 18:37:18,070 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-14 18:37:18,342 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-14 18:37:18,823 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2018-10-14 18:37:19,569 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 143 [2018-10-14 18:37:20,100 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-14 18:37:20,389 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-14 18:37:20,705 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:37:21,009 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:37:21,260 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-14 18:37:21,900 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:37:22,202 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:37:22,449 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-14 18:37:22,750 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-14 18:37:23,390 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-14 18:37:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:37:23,489 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-14 18:37:23,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-14 18:37:23,490 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 160 [2018-10-14 18:37:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:37:23,492 INFO L225 Difference]: With dead ends: 185 [2018-10-14 18:37:23,492 INFO L226 Difference]: Without dead ends: 185 [2018-10-14 18:37:23,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=1355, Invalid=13897, Unknown=0, NotChecked=0, Total=15252 [2018-10-14 18:37:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-14 18:37:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2018-10-14 18:37:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-14 18:37:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-14 18:37:23,500 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 160 [2018-10-14 18:37:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:37:23,501 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-14 18:37:23,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 18:37:23,501 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-14 18:37:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-14 18:37:23,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:37:23,504 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:37:23,504 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:37:23,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:37:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash -297121345, now seen corresponding path program 8 times [2018-10-14 18:37:23,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:37:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:37:24,979 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-14 18:37:25,227 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 18:37:25,552 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 18:37:25,810 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 18:37:26,103 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 18:37:26,412 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 18:37:26,666 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-14 18:37:26,965 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-14 18:37:27,217 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-14 18:37:27,518 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-14 18:37:27,847 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-14 18:37:28,136 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 18:37:28,459 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 18:37:28,980 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 18:37:29,316 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 18:37:29,676 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 18:37:29,990 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-14 18:37:30,274 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 18:37:30,563 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 18:37:30,844 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 18:37:31,119 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 18:37:31,395 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 18:37:31,613 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-14 18:37:31,817 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-14 18:37:32,021 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-14 18:37:32,211 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-10-14 18:37:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:37:35,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:37:35,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 18:37:35,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 18:37:35,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 18:37:35,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3753, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 18:37:35,345 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 63 states. [2018-10-14 18:37:38,502 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-14 18:37:39,065 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-14 18:37:39,469 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-14 18:37:40,025 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-14 18:37:40,829 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 18:37:41,405 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-14 18:37:42,080 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 173 [2018-10-14 18:37:42,912 WARN L179 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 205 [2018-10-14 18:37:43,406 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-14 18:37:43,786 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:37:44,514 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 187 [2018-10-14 18:37:45,314 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-14 18:37:45,839 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-14 18:37:46,528 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 179 [2018-10-14 18:37:47,369 WARN L179 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-14 18:37:47,880 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 18:37:48,246 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-14 18:37:48,956 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2018-10-14 18:37:49,646 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 18:37:50,182 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-14 18:37:50,625 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-14 18:37:51,098 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-14 18:37:51,574 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 18:37:51,939 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-14 18:37:52,607 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2018-10-14 18:37:53,553 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 180 [2018-10-14 18:37:54,292 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2018-10-14 18:37:54,691 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-14 18:37:55,189 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 18:37:55,696 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-14 18:37:56,049 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:37:56,726 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2018-10-14 18:37:57,699 WARN L179 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2018-10-14 18:37:58,175 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 18:37:58,560 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-14 18:37:59,005 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-14 18:37:59,428 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-14 18:37:59,768 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-14 18:38:00,445 WARN L179 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2018-10-14 18:38:01,125 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-14 18:38:01,559 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-14 18:38:01,918 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-14 18:38:02,319 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-14 18:38:02,710 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 18:38:03,022 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:38:03,594 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 156 [2018-10-14 18:38:04,258 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-14 18:38:04,654 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 18:38:05,000 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-14 18:38:05,389 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:38:05,825 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:38:06,128 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-14 18:38:06,887 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:38:07,257 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-14 18:38:07,563 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-14 18:38:07,921 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-14 18:38:08,670 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-14 18:38:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:38:08,786 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-14 18:38:08,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-14 18:38:08,787 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 173 [2018-10-14 18:38:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:38:08,788 INFO L225 Difference]: With dead ends: 198 [2018-10-14 18:38:08,788 INFO L226 Difference]: Without dead ends: 198 [2018-10-14 18:38:08,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=1522, Invalid=17110, Unknown=0, NotChecked=0, Total=18632 [2018-10-14 18:38:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-14 18:38:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2018-10-14 18:38:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-14 18:38:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-14 18:38:08,794 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 173 [2018-10-14 18:38:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:38:08,794 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-14 18:38:08,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 18:38:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-14 18:38:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 18:38:08,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:38:08,797 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:38:08,797 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:38:08,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:38:08,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1764264083, now seen corresponding path program 9 times [2018-10-14 18:38:08,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:38:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:38:09,678 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-14 18:38:10,631 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2018-10-14 18:38:10,950 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-14 18:38:11,205 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-14 18:38:11,469 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-14 18:38:11,767 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 60 [2018-10-14 18:38:12,114 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-14 18:38:12,395 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-10-14 18:38:12,673 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2018-10-14 18:38:12,958 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2018-10-14 18:38:13,280 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-14 18:38:13,627 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2018-10-14 18:38:13,945 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-14 18:38:14,264 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2018-10-14 18:38:14,578 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-14 18:38:14,900 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2018-10-14 18:38:15,270 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 18:38:15,536 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 18:38:15,870 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-14 18:38:16,146 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-14 18:38:16,404 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-14 18:38:16,658 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-14 18:38:16,951 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-14 18:38:17,147 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-14 18:38:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:38:21,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:38:21,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-14 18:38:21,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-14 18:38:21,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-14 18:38:21,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=4578, Unknown=0, NotChecked=0, Total=4970 [2018-10-14 18:38:21,670 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 71 states. [2018-10-14 18:38:24,356 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-14 18:38:24,732 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-14 18:38:25,181 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 18:38:25,720 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-14 18:38:26,489 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-14 18:38:27,105 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-14 18:38:27,870 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 187 [2018-10-14 18:38:28,782 WARN L179 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 222 [2018-10-14 18:38:29,342 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2018-10-14 18:38:29,789 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-14 18:38:30,278 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-14 18:38:30,925 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-14 18:38:31,502 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-14 18:38:32,193 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 196 [2018-10-14 18:38:32,996 WARN L179 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 240 [2018-10-14 18:38:33,830 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 238 [2018-10-14 18:38:34,501 WARN L179 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2018-10-14 18:38:35,299 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-14 18:38:36,308 WARN L179 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-14 18:38:37,242 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-14 18:38:37,892 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-14 18:38:38,673 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 235 [2018-10-14 18:38:39,519 WARN L179 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2018-10-14 18:38:40,216 WARN L179 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2018-10-14 18:38:41,022 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-14 18:38:41,938 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 208 [2018-10-14 18:38:42,809 WARN L179 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 211 [2018-10-14 18:38:43,463 WARN L179 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2018-10-14 18:38:44,221 WARN L179 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 221 [2018-10-14 18:38:45,042 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-14 18:38:45,756 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2018-10-14 18:38:46,596 WARN L179 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-14 18:38:47,387 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-14 18:38:48,189 WARN L179 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-14 18:38:48,825 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-14 18:38:49,560 WARN L179 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 211 [2018-10-14 18:38:50,315 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-14 18:38:50,975 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-14 18:38:51,771 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2018-10-14 18:38:52,516 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-14 18:38:53,282 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2018-10-14 18:38:53,928 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 178 [2018-10-14 18:38:54,663 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 199 [2018-10-14 18:38:55,399 WARN L179 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 198 [2018-10-14 18:38:56,048 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2018-10-14 18:38:56,779 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-14 18:38:57,508 WARN L179 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-14 18:38:58,226 WARN L179 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-14 18:38:58,841 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 170 [2018-10-14 18:38:59,520 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2018-10-14 18:39:00,235 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 183 [2018-10-14 18:39:00,850 WARN L179 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2018-10-14 18:39:01,512 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-10-14 18:39:02,263 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 177 [2018-10-14 18:39:02,957 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-14 18:39:03,568 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 163 [2018-10-14 18:39:04,208 WARN L179 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 169 [2018-10-14 18:39:04,870 WARN L179 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2018-10-14 18:39:05,487 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2018-10-14 18:39:06,093 WARN L179 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2018-10-14 18:39:06,761 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-14 18:39:07,234 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-14 18:39:07,644 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-14 18:39:08,072 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-14 18:39:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:39:08,114 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-14 18:39:08,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-14 18:39:08,115 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 186 [2018-10-14 18:39:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:39:08,117 INFO L225 Difference]: With dead ends: 211 [2018-10-14 18:39:08,117 INFO L226 Difference]: Without dead ends: 211 [2018-10-14 18:39:08,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=3138, Invalid=19814, Unknown=0, NotChecked=0, Total=22952 [2018-10-14 18:39:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-14 18:39:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2018-10-14 18:39:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-14 18:39:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-14 18:39:08,124 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 186 [2018-10-14 18:39:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:39:08,124 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-14 18:39:08,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-14 18:39:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-14 18:39:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-14 18:39:08,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:39:08,126 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:39:08,126 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:39:08,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:39:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2090497151, now seen corresponding path program 10 times [2018-10-14 18:39:08,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:39:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:39:09,960 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 64 [2018-10-14 18:39:10,443 WARN L179 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 18:39:10,895 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 18:39:11,345 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 18:39:11,871 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 67 [2018-10-14 18:39:12,496 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 18:39:12,970 WARN L179 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2018-10-14 18:39:13,438 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-14 18:39:13,914 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2018-10-14 18:39:14,432 WARN L179 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-14 18:39:15,007 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2018-10-14 18:39:15,522 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 18:39:16,037 WARN L179 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 18:39:16,547 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 18:39:17,136 WARN L179 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 18:39:17,716 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2018-10-14 18:39:18,135 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-14 18:39:18,549 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 18:39:18,966 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 18:39:19,416 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 18:39:19,858 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 18:39:20,294 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-14 18:39:20,603 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 18:39:20,912 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 18:39:21,220 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 18:39:21,524 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 18:39:21,827 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 18:39:22,135 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-14 18:39:22,491 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 18:39:22,758 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 18:39:23,011 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 18:39:23,259 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 18:39:23,504 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 18:39:23,742 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-10-14 18:39:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:39:27,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:39:27,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 18:39:27,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 18:39:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 18:39:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 18:39:27,616 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 76 states. [2018-10-14 18:39:30,968 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-14 18:39:31,431 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-14 18:39:31,949 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-14 18:39:32,663 WARN L179 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-14 18:39:33,586 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-14 18:39:34,353 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-14 18:39:35,250 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 213 [2018-10-14 18:39:36,340 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 253 [2018-10-14 18:39:37,018 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-10-14 18:39:37,626 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-14 18:39:38,626 WARN L179 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 226 [2018-10-14 18:39:39,825 WARN L179 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2018-10-14 18:39:40,896 WARN L179 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 232 [2018-10-14 18:39:41,980 WARN L179 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 215 [2018-10-14 18:39:43,368 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 284 DAG size of output: 261 [2018-10-14 18:39:44,355 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 261 [2018-10-14 18:39:45,126 WARN L179 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2018-10-14 18:39:46,140 WARN L179 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-14 18:39:47,407 WARN L179 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2018-10-14 18:39:48,633 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 246 DAG size of output: 238 [2018-10-14 18:39:49,438 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 220 [2018-10-14 18:39:50,343 WARN L179 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 261 [2018-10-14 18:39:51,309 WARN L179 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 259 [2018-10-14 18:39:52,097 WARN L179 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 218 [2018-10-14 18:39:53,080 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 230 [2018-10-14 18:39:54,081 WARN L179 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 233 [2018-10-14 18:39:55,108 WARN L179 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 236 [2018-10-14 18:39:55,860 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 213 [2018-10-14 18:39:56,748 WARN L179 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 247 [2018-10-14 18:39:57,672 WARN L179 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 245 [2018-10-14 18:39:58,564 WARN L179 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2018-10-14 18:39:59,432 WARN L179 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 217 [2018-10-14 18:40:00,349 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 220 [2018-10-14 18:40:01,317 WARN L179 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 223 [2018-10-14 18:40:02,066 WARN L179 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2018-10-14 18:40:02,924 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 237 [2018-10-14 18:40:03,905 WARN L179 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 235 [2018-10-14 18:40:04,675 WARN L179 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 206 [2018-10-14 18:40:05,550 WARN L179 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 212 [2018-10-14 18:40:06,489 WARN L179 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 215 [2018-10-14 18:40:07,462 WARN L179 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 218 [2018-10-14 18:40:08,210 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 202 [2018-10-14 18:40:09,138 WARN L179 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 225 [2018-10-14 18:40:10,026 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 223 [2018-10-14 18:40:10,823 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-14 18:40:11,692 WARN L179 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 214 [2018-10-14 18:40:12,648 WARN L179 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-14 18:40:13,666 WARN L179 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 220 [2018-10-14 18:40:14,430 WARN L179 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-14 18:40:15,273 WARN L179 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 219 [2018-10-14 18:40:16,122 WARN L179 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 214 [2018-10-14 18:40:16,865 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2018-10-14 18:40:17,662 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 200 [2018-10-14 18:40:18,525 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2018-10-14 18:40:19,455 WARN L179 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2018-10-14 18:40:20,183 WARN L179 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2018-10-14 18:40:20,963 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2018-10-14 18:40:21,760 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-14 18:40:22,475 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-14 18:40:23,234 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2018-10-14 18:40:24,368 WARN L179 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 195 [2018-10-14 18:40:25,169 WARN L179 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-14 18:40:25,886 WARN L179 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 185 [2018-10-14 18:40:26,643 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 191 [2018-10-14 18:40:27,381 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2018-10-14 18:40:28,078 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-14 18:40:28,918 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-14 18:40:29,414 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-14 18:40:29,893 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-14 18:40:30,387 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-14 18:40:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:40:30,441 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-14 18:40:30,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-14 18:40:30,442 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 199 [2018-10-14 18:40:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:40:30,443 INFO L225 Difference]: With dead ends: 224 [2018-10-14 18:40:30,444 INFO L226 Difference]: Without dead ends: 224 [2018-10-14 18:40:30,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 77.4s TimeCoverageRelationStatistics Valid=3552, Invalid=22854, Unknown=0, NotChecked=0, Total=26406 [2018-10-14 18:40:30,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-14 18:40:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2018-10-14 18:40:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-14 18:40:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-14 18:40:30,450 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 199 [2018-10-14 18:40:30,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:40:30,450 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-14 18:40:30,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 18:40:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-14 18:40:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-14 18:40:30,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:40:30,452 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:40:30,452 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:40:30,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:40:30,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1812806483, now seen corresponding path program 11 times [2018-10-14 18:40:30,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:40:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:40:33,112 WARN L179 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2018-10-14 18:40:34,007 WARN L179 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-14 18:40:34,900 WARN L179 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-14 18:40:35,743 WARN L179 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-14 18:40:36,604 WARN L179 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 70 [2018-10-14 18:40:37,460 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-14 18:40:38,324 WARN L179 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-14 18:40:39,272 WARN L179 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2018-10-14 18:40:40,063 WARN L179 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2018-10-14 18:40:40,996 WARN L179 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 75 [2018-10-14 18:40:41,956 WARN L179 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 77 [2018-10-14 18:40:42,876 WARN L179 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 72 [2018-10-14 18:40:43,790 WARN L179 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 72 [2018-10-14 18:40:44,732 WARN L179 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 70 [2018-10-14 18:40:45,624 WARN L179 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 70 [2018-10-14 18:40:46,540 WARN L179 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-14 18:40:47,275 WARN L179 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-14 18:40:48,010 WARN L179 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-14 18:40:48,751 WARN L179 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-14 18:40:49,481 WARN L179 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-14 18:40:50,097 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-14 18:40:50,820 WARN L179 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-14 18:40:51,386 WARN L179 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-14 18:40:51,950 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-14 18:40:52,515 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-14 18:40:53,068 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:40:53,545 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-10-14 18:40:54,104 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 18:40:54,547 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-14 18:40:54,986 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 18:40:55,419 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-14 18:40:55,850 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-14 18:40:56,209 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-14 18:40:56,625 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-14 18:40:56,948 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-14 18:40:57,263 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:40:57,612 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-14 18:40:57,914 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 18:40:58,181 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-14 18:40:58,493 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-10-14 18:41:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:41:02,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:41:02,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-14 18:41:02,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-14 18:41:02,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-14 18:41:02,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=6219, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 18:41:02,870 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 82 states. [2018-10-14 18:41:06,367 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-14 18:41:07,490 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-14 18:41:08,092 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-14 18:41:08,729 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2018-10-14 18:41:09,435 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-14 18:41:10,601 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-14 18:41:11,396 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-14 18:41:12,048 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-14 18:41:12,823 WARN L179 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2018-10-14 18:41:13,623 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-14 18:41:14,224 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-14 18:41:15,386 WARN L179 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 248 [2018-10-14 18:41:16,664 WARN L179 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 249 [2018-10-14 18:41:18,089 WARN L179 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2018-10-14 18:41:19,379 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2018-10-14 18:41:20,286 WARN L179 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 234 [2018-10-14 18:41:21,371 WARN L179 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 287 [2018-10-14 18:41:22,547 WARN L179 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 288 [2018-10-14 18:41:23,463 WARN L179 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 235 [2018-10-14 18:41:24,533 WARN L179 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 242 [2018-10-14 18:41:25,973 WARN L179 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 245 [2018-10-14 18:41:27,205 WARN L179 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 248 [2018-10-14 18:41:28,064 WARN L179 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 228 [2018-10-14 18:41:29,092 WARN L179 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 275 [2018-10-14 18:41:30,205 WARN L179 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 276 [2018-10-14 18:41:31,083 WARN L179 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 229 [2018-10-14 18:41:32,081 WARN L179 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 236 [2018-10-14 18:41:33,471 WARN L179 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 239 [2018-10-14 18:41:34,629 WARN L179 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 242 [2018-10-14 18:41:35,501 WARN L179 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 222 [2018-10-14 18:41:36,538 WARN L179 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 263 [2018-10-14 18:41:37,642 WARN L179 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 264 [2018-10-14 18:41:38,528 WARN L179 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2018-10-14 18:41:39,637 WARN L179 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 235 [2018-10-14 18:41:41,154 WARN L179 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 238 [2018-10-14 18:41:42,406 WARN L179 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 241 [2018-10-14 18:41:43,384 WARN L179 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 222 [2018-10-14 18:41:44,533 WARN L179 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 257 [2018-10-14 18:41:45,753 WARN L179 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 260 [2018-10-14 18:41:46,716 WARN L179 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 225 [2018-10-14 18:41:47,835 WARN L179 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 229 [2018-10-14 18:41:48,991 WARN L179 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 232 [2018-10-14 18:41:50,168 WARN L179 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 235 [2018-10-14 18:41:51,078 WARN L179 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 216 [2018-10-14 18:41:52,159 WARN L179 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 245 [2018-10-14 18:41:53,377 WARN L179 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 248 [2018-10-14 18:41:54,326 WARN L179 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-14 18:41:55,339 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 223 [2018-10-14 18:41:56,493 WARN L179 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 226 [2018-10-14 18:41:57,628 WARN L179 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 229 [2018-10-14 18:41:58,529 WARN L179 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 210 [2018-10-14 18:41:59,539 WARN L179 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 233 [2018-10-14 18:42:00,548 WARN L179 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 236 [2018-10-14 18:42:01,525 WARN L179 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 213 [2018-10-14 18:42:02,545 WARN L179 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 217 [2018-10-14 18:42:03,600 WARN L179 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 220 [2018-10-14 18:42:04,701 WARN L179 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 223 [2018-10-14 18:42:05,603 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 204 [2018-10-14 18:42:06,629 WARN L179 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 221 [2018-10-14 18:42:07,664 WARN L179 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 224 [2018-10-14 18:42:08,547 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 207 [2018-10-14 18:42:09,486 WARN L179 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 213 [2018-10-14 18:42:10,506 WARN L179 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 216 [2018-10-14 18:42:11,550 WARN L179 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 219 [2018-10-14 18:42:12,441 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 200 [2018-10-14 18:42:13,374 WARN L179 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 213 [2018-10-14 18:42:14,332 WARN L179 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 213 [2018-10-14 18:42:15,187 WARN L179 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-14 18:42:16,063 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2018-10-14 18:42:17,019 WARN L179 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 207 [2018-10-14 18:42:17,914 WARN L179 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 210 [2018-10-14 18:42:18,700 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 193 [2018-10-14 18:42:19,541 WARN L179 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 199 [2018-10-14 18:42:20,392 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-14 18:42:21,208 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2018-10-14 18:42:22,135 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-14 18:42:22,721 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-14 18:42:23,287 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-14 18:42:23,865 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-14 18:42:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 18:42:23,963 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-14 18:42:23,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-14 18:42:23,964 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 212 [2018-10-14 18:42:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 18:42:23,966 INFO L225 Difference]: With dead ends: 237 [2018-10-14 18:42:23,967 INFO L226 Difference]: Without dead ends: 237 [2018-10-14 18:42:23,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 104.9s TimeCoverageRelationStatistics Valid=3728, Invalid=27424, Unknown=0, NotChecked=0, Total=31152 [2018-10-14 18:42:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-14 18:42:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 226. [2018-10-14 18:42:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-14 18:42:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-14 18:42:23,974 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 212 [2018-10-14 18:42:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 18:42:23,974 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-14 18:42:23,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-14 18:42:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-14 18:42:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-14 18:42:23,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 18:42:23,976 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 18:42:23,976 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 18:42:23,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 18:42:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash 276213567, now seen corresponding path program 12 times [2018-10-14 18:42:23,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 18:42:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 18:42:26,497 WARN L179 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 77 [2018-10-14 18:42:27,607 WARN L179 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 18:42:28,508 WARN L179 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 18:42:29,605 WARN L179 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 18:42:30,607 WARN L179 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 80 [2018-10-14 18:42:31,823 WARN L179 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 18:42:32,950 WARN L179 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 72 [2018-10-14 18:42:34,019 WARN L179 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-14 18:42:35,093 WARN L179 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 70 [2018-10-14 18:42:36,254 WARN L179 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 81 [2018-10-14 18:42:37,493 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 301 DAG size of output: 83 [2018-10-14 18:42:38,617 WARN L179 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-14 18:42:39,726 WARN L179 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 78 [2018-10-14 18:42:40,903 WARN L179 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2018-10-14 18:42:42,039 WARN L179 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 79 [2018-10-14 18:42:43,057 WARN L179 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 74 [2018-10-14 18:42:43,864 WARN L179 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 75 [2018-10-14 18:42:44,704 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 72 [2018-10-14 18:42:45,529 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 72 [2018-10-14 18:42:46,332 WARN L179 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-14 18:42:47,234 WARN L179 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2018-10-14 18:42:48,130 WARN L179 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 68 [2018-10-14 18:42:48,690 WARN L179 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2018-10-14 18:42:49,284 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 18:42:49,876 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 18:42:50,440 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 18:42:51,040 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2018-10-14 18:42:51,583 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2018-10-14 18:42:52,719 WARN L179 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2018-10-14 18:42:53,164 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 18:42:53,608 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2018-10-14 18:42:54,069 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 18:42:54,574 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2018-10-14 18:42:55,075 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2018-10-14 18:42:55,433 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 18:42:55,791 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 18:42:56,122 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-14 18:42:56,478 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 18:42:56,804 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-14 18:42:57,137 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2018-10-14 18:42:57,437 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 18:42:57,721 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 18:42:57,989 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-14 18:42:58,263 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 18:42:58,567 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-14 18:42:58,854 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-10-14 18:43:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 18:43:03,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 18:43:03,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-14 18:43:03,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-14 18:43:03,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-14 18:43:03,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=7220, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 18:43:03,765 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 88 states. [2018-10-14 18:43:07,265 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-10-14 18:43:08,499 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-14 18:43:09,176 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-14 18:43:09,912 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-14 18:43:10,787 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2018-10-14 18:43:12,097 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2018-10-14 18:43:13,125 WARN L179 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2018-10-14 18:43:14,270 WARN L179 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 242 [2018-10-14 18:43:15,734 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 322 DAG size of output: 289 [2018-10-14 18:43:16,672 WARN L179 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2018-10-14 18:43:17,382 WARN L179 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-14 18:43:18,724 WARN L179 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 262 [2018-10-14 18:43:20,449 WARN L179 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 275 DAG size of output: 265 [2018-10-14 18:43:21,897 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 280 DAG size of output: 268 [2018-10-14 18:43:23,348 WARN L179 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 270 DAG size of output: 251 [2018-10-14 18:43:25,211 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 337 DAG size of output: 313 [2018-10-14 18:43:26,579 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 323 DAG size of output: 313 [2018-10-14 18:43:27,641 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-10-14 18:43:28,990 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 273 DAG size of output: 261 [2018-10-14 18:43:30,616 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 279 DAG size of output: 264 [2018-10-14 18:43:32,088 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 285 DAG size of output: 267 [2018-10-14 18:43:33,164 WARN L179 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 243 [2018-10-14 18:43:34,497 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 321 DAG size of output: 292 [2018-10-14 18:43:35,902 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 313 DAG size of output: 295 [2018-10-14 18:43:36,921 WARN L179 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 246 [2018-10-14 18:43:38,217 WARN L179 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 268 [2018-10-14 18:43:39,892 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 289 DAG size of output: 273 [2018-10-14 18:43:41,377 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 295 DAG size of output: 276 [2018-10-14 18:43:42,395 WARN L179 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 238 [2018-10-14 18:43:43,752 WARN L179 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 315 DAG size of output: 282 [2018-10-14 18:43:45,094 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 307 DAG size of output: 285 [2018-10-14 18:43:46,113 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-14 18:43:47,424 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 272 DAG size of output: 256 [2018-10-14 18:43:49,090 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 278 DAG size of output: 259 [2018-10-14 18:43:50,565 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 284 DAG size of output: 262 [2018-10-14 18:43:51,579 WARN L179 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 239 [2018-10-14 18:43:52,840 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 313 DAG size of output: 278 [2018-10-14 18:43:54,237 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 305 DAG size of output: 283 [2018-10-14 18:43:55,310 WARN L179 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 244 [2018-10-14 18:43:56,540 WARN L179 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 254