java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 16:39:41,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 16:39:41,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 16:39:41,884 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 16:39:41,885 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 16:39:41,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 16:39:41,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 16:39:41,889 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 16:39:41,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 16:39:41,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 16:39:41,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 16:39:41,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 16:39:41,894 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 16:39:41,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 16:39:41,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 16:39:41,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 16:39:41,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 16:39:41,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 16:39:41,901 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 16:39:41,903 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 16:39:41,904 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 16:39:41,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 16:39:41,911 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 16:39:41,911 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 16:39:41,911 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 16:39:41,912 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 16:39:41,913 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 16:39:41,914 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 16:39:41,915 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 16:39:41,918 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 16:39:41,919 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 16:39:41,919 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 16:39:41,919 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 16:39:41,920 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 16:39:41,920 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 16:39:41,923 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 16:39:41,923 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 16:39:41,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 16:39:41,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 16:39:41,943 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 16:39:41,943 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 16:39:41,944 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 16:39:41,944 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 16:39:41,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 16:39:41,945 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 16:39:41,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 16:39:41,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 16:39:41,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 16:39:41,946 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 16:39:41,946 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 16:39:41,950 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 16:39:41,950 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 16:39:42,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 16:39:42,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 16:39:42,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 16:39:42,031 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 16:39:42,031 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 16:39:42,032 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-10 16:39:42,033 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-10 16:39:42,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 16:39:42,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-10 16:39:42,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 16:39:42,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 16:39:42,120 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 16:39:42,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 16:39:42,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 16:39:42,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 16:39:42,198 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 16:39:42,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 16:39:42,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 16:39:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 16:39:42,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 16:39:42,926 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 16:39:42,927 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 04:39:42 BoogieIcfgContainer [2018-10-10 16:39:42,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 16:39:42,927 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-10 16:39:42,927 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-10 16:39:42,928 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-10 16:39:42,932 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 04:39:42" (1/1) ... [2018-10-10 16:39:42,939 INFO L137 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-10-10 16:39:42,939 INFO L138 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-10-10 16:39:42,978 INFO L191 apSepIcfgTransformer]: Heap separator: starting loc-array-style preprocessing [2018-10-10 16:39:43,021 INFO L217 apSepIcfgTransformer]: finished MemlocArrayUpdater [2018-10-10 16:39:43,037 INFO L280 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-10-10 16:39:43,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=1) [2018-10-10 16:40:11,349 INFO L315 AbstractInterpreter]: Visited 79 different actions 96 times. Merged at 15 different actions 16 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-10-10 16:40:11,351 INFO L304 apSepIcfgTransformer]: finished equality analysis [2018-10-10 16:40:11,355 INFO L316 apSepIcfgTransformer]: Finished detection of select terms ("array reads") [2018-10-10 16:40:11,443 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select |v_#locv_ULTIMATE.start_write~int_old_#memory_int_4_1_1| |v_ULTIMATE.start_write~int_#ptr.base_12|) at (assume write~int_old_#memory_int[write~int_#ptr.base := write~int_old_#memory_int[write~int_#ptr.base][write~int_#ptr.offset := write~int_#value]] == #memory_int;) [2018-10-10 16:40:11,501 WARN L152 HeapPartitionManager]: No literal set constraint found for loc-array access (select (select |#loc_#memory_int_(Array-Int-(Array-Int-#locsort2))| |v_ULTIMATE.start_read~int_#ptr.base_7|) |v_ULTIMATE.start_read~int_#ptr.offset_5|) at (assume #memory_int[read~int_#ptr.base][read~int_#ptr.offset] == read~int_#value;) [2018-10-10 16:40:11,502 INFO L232 HeapPartitionManager]: partitioning result: [2018-10-10 16:40:11,503 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-10 16:40:11,503 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-10 16:40:11,503 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-10 16:40:11,503 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-10 16:40:11,504 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-10 16:40:11,504 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-10 16:40:11,504 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-10 16:40:11,504 INFO L237 HeapPartitionManager]: location blocks for array group [#memory_int, ULTIMATE.start_write~int_old_#memory_int] [2018-10-10 16:40:11,504 INFO L246 HeapPartitionManager]: at dimension 1 [2018-10-10 16:40:11,505 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-10-10 16:40:11,505 INFO L248 HeapPartitionManager]: # location blocks :2 [2018-10-10 16:40:11,505 INFO L246 HeapPartitionManager]: at dimension 2 [2018-10-10 16:40:11,505 INFO L247 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-10-10 16:40:11,505 INFO L248 HeapPartitionManager]: # location blocks :1 [2018-10-10 16:40:11,507 INFO L145 ransitionTransformer]: executing heap partitioning transformation [2018-10-10 16:40:11,528 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.10 04:40:11 BasicIcfg [2018-10-10 16:40:11,529 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-10 16:40:11,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 16:40:11,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 16:40:11,533 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 16:40:11,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 04:39:42" (1/3) ... [2018-10-10 16:40:11,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b99acd1 and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 04:40:11, skipping insertion in model container [2018-10-10 16:40:11,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 04:39:42" (2/3) ... [2018-10-10 16:40:11,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b99acd1 and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 04:40:11, skipping insertion in model container [2018-10-10 16:40:11,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.10 04:40:11" (3/3) ... [2018-10-10 16:40:11,537 INFO L112 eAbstractionObserver]: Analyzing ICFG memPartitionedIcfg [2018-10-10 16:40:11,547 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 16:40:11,556 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 16:40:11,572 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 16:40:11,593 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 16:40:11,594 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 16:40:11,594 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 16:40:11,594 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 16:40:11,595 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 16:40:11,595 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 16:40:11,595 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 16:40:11,595 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 16:40:11,595 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 16:40:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-10 16:40:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-10 16:40:11,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:11,619 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:11,620 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:11,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash -572282269, now seen corresponding path program 1 times [2018-10-10 16:40:11,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:12,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 16:40:12,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 16:40:12,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 16:40:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 16:40:12,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 16:40:12,532 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 11 states. [2018-10-10 16:40:12,966 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 16:40:13,252 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-10 16:40:13,723 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-10 16:40:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:13,960 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-10 16:40:13,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 16:40:13,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2018-10-10 16:40:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:13,974 INFO L225 Difference]: With dead ends: 91 [2018-10-10 16:40:13,975 INFO L226 Difference]: Without dead ends: 91 [2018-10-10 16:40:13,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-10 16:40:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-10 16:40:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-10 16:40:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 16:40:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-10 16:40:14,019 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-10 16:40:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:14,020 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-10 16:40:14,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 16:40:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-10 16:40:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 16:40:14,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:14,023 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:14,024 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:14,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash 188123709, now seen corresponding path program 1 times [2018-10-10 16:40:14,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:14,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:40:14,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-10 16:40:14,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 16:40:14,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 16:40:14,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-10 16:40:14,415 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 12 states. [2018-10-10 16:40:15,137 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-10 16:40:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:15,262 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-10 16:40:15,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 16:40:15,263 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2018-10-10 16:40:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:15,265 INFO L225 Difference]: With dead ends: 104 [2018-10-10 16:40:15,265 INFO L226 Difference]: Without dead ends: 104 [2018-10-10 16:40:15,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2018-10-10 16:40:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-10 16:40:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-10 16:40:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-10 16:40:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-10 16:40:15,275 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-10 16:40:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:15,276 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-10 16:40:15,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 16:40:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-10 16:40:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-10 16:40:15,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:15,279 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:15,279 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:15,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash 480492707, now seen corresponding path program 2 times [2018-10-10 16:40:15,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:15,778 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-10 16:40:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:16,107 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:40:16,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-10 16:40:16,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-10 16:40:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-10 16:40:16,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-10 16:40:16,109 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 21 states. [2018-10-10 16:40:16,558 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-10 16:40:17,205 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-10 16:40:17,459 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-10 16:40:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:18,491 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-10 16:40:18,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-10 16:40:18,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2018-10-10 16:40:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:18,500 INFO L225 Difference]: With dead ends: 117 [2018-10-10 16:40:18,500 INFO L226 Difference]: Without dead ends: 117 [2018-10-10 16:40:18,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2018-10-10 16:40:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-10 16:40:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-10 16:40:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-10 16:40:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-10 16:40:18,519 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-10 16:40:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:18,522 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-10 16:40:18,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-10 16:40:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-10 16:40:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-10 16:40:18,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:18,525 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:18,525 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:18,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash -736747523, now seen corresponding path program 3 times [2018-10-10 16:40:18,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:19,183 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2018-10-10 16:40:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:19,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:40:19,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-10 16:40:19,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-10 16:40:19,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-10 16:40:19,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-10-10 16:40:19,863 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 26 states. [2018-10-10 16:40:21,759 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-10 16:40:21,937 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 16:40:22,640 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-10 16:40:22,895 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-10 16:40:23,174 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-10 16:40:23,405 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 16:40:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:24,264 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-10 16:40:24,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-10 16:40:24,265 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2018-10-10 16:40:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:24,267 INFO L225 Difference]: With dead ends: 130 [2018-10-10 16:40:24,268 INFO L226 Difference]: Without dead ends: 130 [2018-10-10 16:40:24,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 16:40:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-10 16:40:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-10 16:40:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-10 16:40:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-10 16:40:24,278 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-10 16:40:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:24,278 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-10 16:40:24,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-10 16:40:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-10 16:40:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-10 16:40:24,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:24,281 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:24,281 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:24,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1926594275, now seen corresponding path program 4 times [2018-10-10 16:40:24,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:25,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:40:25,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 16:40:25,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 16:40:25,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 16:40:25,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 16:40:25,890 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 33 states. [2018-10-10 16:40:26,633 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-10-10 16:40:27,230 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-10 16:40:27,587 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:40:27,860 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-10 16:40:28,090 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 16:40:28,657 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-10 16:40:28,919 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-10 16:40:29,140 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 16:40:29,421 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-10 16:40:29,898 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-10 16:40:30,213 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2018-10-10 16:40:30,587 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2018-10-10 16:40:30,927 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-10-10 16:40:31,193 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-10 16:40:31,489 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-10 16:40:31,711 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-10 16:40:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:31,919 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-10 16:40:31,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-10 16:40:31,919 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 118 [2018-10-10 16:40:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:31,922 INFO L225 Difference]: With dead ends: 143 [2018-10-10 16:40:31,922 INFO L226 Difference]: Without dead ends: 143 [2018-10-10 16:40:31,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=770, Invalid=2890, Unknown=0, NotChecked=0, Total=3660 [2018-10-10 16:40:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-10 16:40:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-10 16:40:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-10 16:40:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-10 16:40:31,931 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-10 16:40:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:31,932 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-10 16:40:31,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 16:40:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-10 16:40:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-10 16:40:31,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:31,934 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:31,935 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:31,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1606550973, now seen corresponding path program 5 times [2018-10-10 16:40:31,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:35,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:40:35,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-10 16:40:35,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-10 16:40:35,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-10 16:40:35,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-10 16:40:35,002 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 36 states. [2018-10-10 16:40:36,569 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 16:40:36,813 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:40:37,185 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-10 16:40:37,438 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:40:37,640 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 16:40:37,885 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-10 16:40:38,263 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-10 16:40:38,610 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-10 16:40:38,894 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 16:40:39,248 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-10 16:40:39,898 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 16:40:40,262 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-10 16:40:40,627 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-10-10 16:40:40,872 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 16:40:41,058 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-10 16:40:41,276 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:40:41,589 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-10 16:40:41,911 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 16:40:42,193 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-10 16:40:42,574 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-10 16:40:43,125 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 16:40:43,486 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-10 16:40:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:43,546 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-10 16:40:43,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-10 16:40:43,547 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 131 [2018-10-10 16:40:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:43,549 INFO L225 Difference]: With dead ends: 156 [2018-10-10 16:40:43,550 INFO L226 Difference]: Without dead ends: 156 [2018-10-10 16:40:43,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2018-10-10 16:40:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-10 16:40:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-10 16:40:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-10 16:40:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-10 16:40:43,563 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-10 16:40:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:43,563 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-10 16:40:43,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-10 16:40:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-10 16:40:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-10 16:40:43,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:43,568 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:43,569 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:43,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1086124323, now seen corresponding path program 6 times [2018-10-10 16:40:43,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:40:44,617 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-10 16:40:44,822 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-10 16:40:44,986 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-10 16:40:45,172 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-10 16:40:45,344 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-10 16:40:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:40:47,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:40:47,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-10 16:40:47,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-10 16:40:47,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-10 16:40:47,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 16:40:47,184 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 43 states. [2018-10-10 16:40:48,355 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 16:40:48,607 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-10 16:40:48,874 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-10 16:40:49,239 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 16:40:49,559 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 16:40:49,829 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-10 16:40:50,127 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-10 16:40:50,435 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-10 16:40:50,765 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:40:51,150 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 16:40:51,529 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2018-10-10 16:40:51,926 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2018-10-10 16:40:52,420 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2018-10-10 16:40:53,351 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2018-10-10 16:40:53,887 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2018-10-10 16:40:54,293 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-10 16:40:54,699 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-10 16:40:55,113 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2018-10-10 16:40:55,591 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2018-10-10 16:40:56,017 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-10 16:40:56,371 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-10 16:40:56,745 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-10 16:40:57,132 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-10 16:40:57,532 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-10 16:40:57,932 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-10 16:40:58,324 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-10 16:40:58,660 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-10 16:40:58,912 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:40:59,243 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 16:40:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:40:59,274 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-10 16:40:59,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 16:40:59,275 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 144 [2018-10-10 16:40:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:40:59,276 INFO L225 Difference]: With dead ends: 169 [2018-10-10 16:40:59,276 INFO L226 Difference]: Without dead ends: 169 [2018-10-10 16:40:59,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1315, Invalid=5165, Unknown=0, NotChecked=0, Total=6480 [2018-10-10 16:40:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-10 16:40:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-10 16:40:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-10 16:40:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-10 16:40:59,286 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-10 16:40:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:40:59,286 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-10 16:40:59,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-10 16:40:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-10 16:40:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-10 16:40:59,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:40:59,290 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:40:59,290 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:40:59,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:40:59,290 INFO L82 PathProgramCache]: Analyzing trace with hash -596231299, now seen corresponding path program 7 times [2018-10-10 16:40:59,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:40:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:41:00,427 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2018-10-10 16:41:00,579 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-10-10 16:41:01,130 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-10 16:41:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:41:03,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:41:03,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 16:41:03,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 16:41:03,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 16:41:03,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 16:41:03,406 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 47 states. [2018-10-10 16:41:05,138 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 16:41:05,505 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 16:41:05,887 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:41:06,375 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-10 16:41:06,736 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:41:07,021 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 16:41:07,371 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-10 16:41:07,883 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-10 16:41:08,576 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2018-10-10 16:41:09,196 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2018-10-10 16:41:09,646 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 135 [2018-10-10 16:41:10,114 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-10 16:41:10,673 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-10 16:41:11,380 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 148 [2018-10-10 16:41:11,998 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 151 [2018-10-10 16:41:12,627 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2018-10-10 16:41:13,127 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2018-10-10 16:41:13,680 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2018-10-10 16:41:14,276 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 147 [2018-10-10 16:41:14,906 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 150 [2018-10-10 16:41:15,354 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-10 16:41:15,862 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2018-10-10 16:41:16,375 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 134 [2018-10-10 16:41:16,875 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-10 16:41:17,412 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2018-10-10 16:41:17,830 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-10 16:41:18,235 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2018-10-10 16:41:18,668 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-10 16:41:19,137 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2018-10-10 16:41:19,619 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-10 16:41:20,031 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-10-10 16:41:20,431 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-10 16:41:20,743 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-10 16:41:21,072 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-10 16:41:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:41:21,112 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-10 16:41:21,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-10 16:41:21,113 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 157 [2018-10-10 16:41:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:41:21,115 INFO L225 Difference]: With dead ends: 182 [2018-10-10 16:41:21,115 INFO L226 Difference]: Without dead ends: 182 [2018-10-10 16:41:21,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=1579, Invalid=6431, Unknown=0, NotChecked=0, Total=8010 [2018-10-10 16:41:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-10 16:41:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-10 16:41:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-10 16:41:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-10 16:41:21,123 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-10 16:41:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:41:21,123 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-10 16:41:21,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 16:41:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-10 16:41:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-10 16:41:21,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:41:21,126 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:41:21,126 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:41:21,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:41:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1503531875, now seen corresponding path program 8 times [2018-10-10 16:41:21,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:41:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:41:21,997 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-10 16:41:22,227 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 16:41:22,461 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 16:41:22,701 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:41:22,942 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 16:41:23,186 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-10 16:41:23,565 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-10 16:41:23,839 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 16:41:24,136 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-10 16:41:24,393 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:41:24,741 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:41:24,993 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 16:41:25,384 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 16:41:25,600 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 16:41:25,820 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 16:41:26,115 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 16:41:26,329 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 16:41:26,501 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 16:41:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:41:28,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:41:28,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-10 16:41:28,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-10 16:41:28,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-10 16:41:28,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2018-10-10 16:41:28,484 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 53 states. [2018-10-10 16:41:30,320 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-10 16:41:30,696 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-10 16:41:31,150 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 16:41:31,748 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-10 16:41:32,166 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 16:41:32,490 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-10 16:41:32,870 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 16:41:33,216 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 16:41:33,714 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:41:34,082 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 16:41:34,547 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2018-10-10 16:41:35,246 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-10 16:41:35,865 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2018-10-10 16:41:36,658 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-10 16:41:37,294 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2018-10-10 16:41:37,755 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2018-10-10 16:41:38,299 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2018-10-10 16:41:38,875 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 160 [2018-10-10 16:41:39,495 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2018-10-10 16:41:40,205 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-10 16:41:40,648 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-10 16:41:41,128 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-10 16:41:41,751 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 154 [2018-10-10 16:41:42,351 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2018-10-10 16:41:42,966 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2018-10-10 16:41:43,404 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2018-10-10 16:41:43,863 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2018-10-10 16:41:44,361 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-10-10 16:41:44,903 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2018-10-10 16:41:45,457 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-10 16:41:45,913 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-10 16:41:46,401 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-10 16:41:46,918 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-10 16:41:47,428 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-10 16:41:47,983 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-10 16:41:48,454 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-10 16:41:48,908 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-10 16:41:49,238 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-10 16:41:49,530 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-10 16:41:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:41:49,579 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-10 16:41:49,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-10 16:41:49,580 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 170 [2018-10-10 16:41:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:41:49,581 INFO L225 Difference]: With dead ends: 195 [2018-10-10 16:41:49,581 INFO L226 Difference]: Without dead ends: 195 [2018-10-10 16:41:49,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=2016, Invalid=8084, Unknown=0, NotChecked=0, Total=10100 [2018-10-10 16:41:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-10 16:41:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-10 16:41:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-10 16:41:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-10 16:41:49,588 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-10 16:41:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:41:49,589 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-10 16:41:49,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-10 16:41:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-10 16:41:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-10 16:41:49,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:41:49,591 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:41:49,591 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:41:49,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:41:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash -445726403, now seen corresponding path program 9 times [2018-10-10 16:41:49,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:41:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:41:50,562 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-10 16:41:50,898 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 16:41:51,252 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 16:41:51,554 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-10 16:41:51,873 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 16:41:52,129 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 16:41:52,392 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-10 16:41:52,704 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-10 16:41:53,046 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 65 [2018-10-10 16:41:53,352 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 16:41:53,666 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 16:41:53,975 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 16:41:54,343 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-10 16:41:54,592 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-10 16:41:54,863 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 16:41:55,120 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 16:41:55,362 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 16:41:55,666 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-10 16:41:55,850 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-10-10 16:41:56,233 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-10 16:41:56,623 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2018-10-10 16:41:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:41:59,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:41:59,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-10 16:41:59,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-10 16:41:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-10 16:41:59,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2939, Unknown=0, NotChecked=0, Total=3080 [2018-10-10 16:41:59,435 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 56 states. [2018-10-10 16:42:01,562 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-10 16:42:02,042 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 16:42:02,558 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 16:42:03,240 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-10 16:42:03,730 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-10 16:42:04,105 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 16:42:04,577 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-10 16:42:05,313 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-10 16:42:06,004 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-10 16:42:06,493 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 16:42:07,216 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-10-10 16:42:07,675 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 16:42:08,326 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-10 16:42:08,976 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-10 16:42:09,443 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-10 16:42:09,827 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-10 16:42:10,254 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 16:42:10,915 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-10 16:42:11,578 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-10 16:42:12,078 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-10 16:42:12,459 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 16:42:12,878 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-10 16:42:13,259 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 16:42:13,878 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-10 16:42:14,295 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-10 16:42:14,641 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-10 16:42:15,054 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-10 16:42:15,627 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-10 16:42:16,236 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 16:42:16,639 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:42:16,969 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-10 16:42:17,409 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:42:17,978 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-10 16:42:18,733 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-10-10 16:42:19,305 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 152 [2018-10-10 16:42:19,623 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-10 16:42:20,003 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-10 16:42:20,506 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2018-10-10 16:42:21,074 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 16:42:21,436 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-10 16:42:21,736 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 16:42:22,108 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 16:42:22,830 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-10 16:42:23,143 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:42:23,803 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-10 16:42:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:42:23,906 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-10 16:42:23,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-10 16:42:23,907 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 183 [2018-10-10 16:42:23,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:42:23,908 INFO L225 Difference]: With dead ends: 208 [2018-10-10 16:42:23,908 INFO L226 Difference]: Without dead ends: 208 [2018-10-10 16:42:23,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2018-10-10 16:42:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-10 16:42:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-10 16:42:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-10 16:42:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-10 16:42:23,917 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-10 16:42:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:42:23,917 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-10 16:42:23,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-10 16:42:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-10 16:42:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-10 16:42:23,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:42:23,920 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:42:23,920 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:42:23,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:42:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1136453027, now seen corresponding path program 10 times [2018-10-10 16:42:23,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:42:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:42:25,239 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 16:42:25,674 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 16:42:26,129 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 16:42:26,584 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 16:42:27,046 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 16:42:27,611 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-10 16:42:28,073 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-10 16:42:28,591 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 16:42:29,149 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-10 16:42:29,647 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 16:42:30,171 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 16:42:30,680 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 16:42:31,235 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 16:42:31,636 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 16:42:32,025 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 16:42:32,443 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 16:42:32,888 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 16:42:33,365 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 16:42:33,644 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 16:42:33,920 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:42:34,201 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:42:34,474 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 16:42:34,752 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 16:42:34,988 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 16:42:35,218 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 16:42:35,454 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 16:42:35,680 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 16:42:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:42:38,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:42:38,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-10 16:42:38,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-10 16:42:38,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-10 16:42:38,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2018-10-10 16:42:38,568 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 63 states. [2018-10-10 16:42:39,817 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-10 16:42:40,102 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-10 16:42:40,517 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 16:42:41,001 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-10 16:42:41,563 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 16:42:42,097 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 16:42:42,481 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-10 16:42:42,960 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 16:42:43,409 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-10 16:42:43,922 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-10 16:42:44,409 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 16:42:45,014 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 187 [2018-10-10 16:42:45,661 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-10 16:42:46,469 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-10 16:42:47,335 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-10 16:42:48,322 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-10 16:42:48,941 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-10 16:42:49,650 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2018-10-10 16:42:50,407 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-10 16:42:51,242 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-10 16:42:52,121 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-10 16:42:52,716 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-10 16:42:53,463 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-10 16:42:54,191 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-10 16:42:54,947 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-10 16:42:55,706 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 188 [2018-10-10 16:42:56,301 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2018-10-10 16:42:56,953 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 170 [2018-10-10 16:42:57,646 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-10 16:42:58,494 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2018-10-10 16:42:59,268 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-10 16:42:59,848 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-10 16:43:00,469 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-10 16:43:01,155 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 173 [2018-10-10 16:43:01,885 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 176 [2018-10-10 16:43:02,627 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2018-10-10 16:43:03,237 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2018-10-10 16:43:03,873 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-10 16:43:04,501 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-10 16:43:05,149 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-10 16:43:05,832 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-10 16:43:06,400 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2018-10-10 16:43:06,986 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-10 16:43:07,609 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2018-10-10 16:43:08,255 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-10 16:43:08,956 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-10 16:43:09,526 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-10 16:43:10,137 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-10 16:43:10,549 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 16:43:10,925 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-10 16:43:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:43:10,951 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-10 16:43:10,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-10 16:43:10,951 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 196 [2018-10-10 16:43:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:43:10,954 INFO L225 Difference]: With dead ends: 221 [2018-10-10 16:43:10,954 INFO L226 Difference]: Without dead ends: 221 [2018-10-10 16:43:10,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=2873, Invalid=11647, Unknown=0, NotChecked=0, Total=14520 [2018-10-10 16:43:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-10 16:43:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-10 16:43:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-10 16:43:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-10 16:43:10,960 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-10 16:43:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:43:10,961 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-10 16:43:10,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-10 16:43:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-10 16:43:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-10 16:43:10,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:43:10,963 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:43:10,963 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:43:10,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:43:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1122473725, now seen corresponding path program 11 times [2018-10-10 16:43:10,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:43:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:43:13,003 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-10 16:43:13,792 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 16:43:14,451 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 16:43:15,110 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-10 16:43:15,776 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 16:43:16,447 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-10 16:43:17,102 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-10 16:43:17,869 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-10 16:43:18,734 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-10 16:43:19,479 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 16:43:20,215 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 16:43:20,958 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-10 16:43:21,654 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-10 16:43:22,223 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-10 16:43:22,790 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 16:43:23,357 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 16:43:23,987 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 16:43:24,513 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-10 16:43:24,847 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 16:43:25,166 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 16:43:25,497 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 16:43:25,823 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 16:43:26,193 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-10 16:43:26,453 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 16:43:26,713 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 16:43:26,971 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 16:43:27,222 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 16:43:27,519 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-10 16:43:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:43:31,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:43:31,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-10 16:43:31,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-10 16:43:31,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-10 16:43:31,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2018-10-10 16:43:31,441 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 67 states. [2018-10-10 16:43:33,701 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 16:43:34,113 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 16:43:34,671 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 16:43:35,293 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-10 16:43:36,163 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-10 16:43:36,792 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-10 16:43:37,259 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-10 16:43:37,871 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-10 16:43:38,779 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-10 16:43:39,953 WARN L178 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2018-10-10 16:43:40,976 WARN L178 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-10 16:43:41,632 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2018-10-10 16:43:42,353 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-10 16:43:43,187 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-10 16:43:44,353 WARN L178 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 212 [2018-10-10 16:43:45,328 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 215 [2018-10-10 16:43:45,997 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2018-10-10 16:43:46,787 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-10 16:43:47,724 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-10 16:43:48,737 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2018-10-10 16:43:49,854 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-10 16:43:50,534 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2018-10-10 16:43:51,236 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-10 16:43:52,029 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2018-10-10 16:43:52,880 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 199 [2018-10-10 16:43:53,775 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 202 [2018-10-10 16:43:54,460 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2018-10-10 16:43:55,183 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2018-10-10 16:43:56,031 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2018-10-10 16:43:56,971 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2018-10-10 16:43:57,948 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 209 [2018-10-10 16:43:58,611 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2018-10-10 16:43:59,298 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-10 16:44:00,077 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 185 [2018-10-10 16:44:00,858 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2018-10-10 16:44:01,674 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 191 [2018-10-10 16:44:02,317 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-10 16:44:02,966 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 174 [2018-10-10 16:44:03,712 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 184 [2018-10-10 16:44:04,511 WARN L178 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 187 [2018-10-10 16:44:05,402 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2018-10-10 16:44:06,047 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2018-10-10 16:44:06,680 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 168 [2018-10-10 16:44:07,378 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-10 16:44:08,139 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 177 [2018-10-10 16:44:08,916 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-10 16:44:09,532 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-10 16:44:10,174 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2018-10-10 16:44:10,821 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-10 16:44:11,516 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2018-10-10 16:44:12,216 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-10 16:44:12,823 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-10 16:44:13,409 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-10-10 16:44:13,853 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-10 16:44:14,259 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 16:44:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:44:14,332 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-10 16:44:14,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-10 16:44:14,333 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 209 [2018-10-10 16:44:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:44:14,335 INFO L225 Difference]: With dead ends: 234 [2018-10-10 16:44:14,335 INFO L226 Difference]: Without dead ends: 234 [2018-10-10 16:44:14,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3370 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=3233, Invalid=13537, Unknown=0, NotChecked=0, Total=16770 [2018-10-10 16:44:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-10 16:44:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-10 16:44:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-10 16:44:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-10 16:44:14,341 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-10 16:44:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:44:14,342 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-10 16:44:14,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-10 16:44:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-10 16:44:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-10 16:44:14,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:44:14,343 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:44:14,344 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:44:14,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:44:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2019387363, now seen corresponding path program 12 times [2018-10-10 16:44:14,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:44:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:44:16,216 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-10 16:44:17,613 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 393 DAG size of output: 74 [2018-10-10 16:44:18,693 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-10 16:44:19,844 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 388 DAG size of output: 73 [2018-10-10 16:44:21,065 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 391 DAG size of output: 76 [2018-10-10 16:44:22,220 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 388 DAG size of output: 73 [2018-10-10 16:44:23,382 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 388 DAG size of output: 73 [2018-10-10 16:44:24,550 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 386 DAG size of output: 71 [2018-10-10 16:44:25,869 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-10 16:44:27,231 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 411 DAG size of output: 82 [2018-10-10 16:44:28,479 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-10 16:44:29,753 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-10 16:44:31,069 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-10 16:44:32,283 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 293 DAG size of output: 73 [2018-10-10 16:44:33,164 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 74 [2018-10-10 16:44:34,057 WARN L178 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-10 16:44:34,947 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-10 16:44:35,922 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-10 16:44:36,876 WARN L178 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 70 [2018-10-10 16:44:37,432 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-10 16:44:37,972 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 16:44:38,521 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-10 16:44:39,060 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-10 16:44:39,642 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-10 16:44:40,070 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-10 16:44:40,541 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 16:44:41,006 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-10 16:44:41,436 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-10 16:44:41,920 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-10 16:44:42,224 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 16:44:42,533 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:44:42,849 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-10 16:44:43,152 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-10 16:44:43,463 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-10 16:44:43,718 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 16:44:43,973 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 16:44:44,237 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-10 16:44:44,488 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-10 16:44:44,701 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-10 16:44:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:44:48,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:44:48,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-10 16:44:48,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-10 16:44:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-10 16:44:48,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4652, Unknown=0, NotChecked=0, Total=5256 [2018-10-10 16:44:48,078 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 73 states. [2018-10-10 16:44:50,559 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-10 16:44:51,052 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-10 16:44:51,682 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 16:44:52,417 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-10 16:44:53,388 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-10 16:44:54,099 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-10 16:44:54,660 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-10 16:44:55,340 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-10 16:44:56,010 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-10 16:44:56,887 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-10 16:44:57,504 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-10 16:44:58,245 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 214 [2018-10-10 16:44:59,152 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2018-10-10 16:45:00,156 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2018-10-10 16:45:01,449 WARN L178 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-10 16:45:02,519 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-10 16:45:03,268 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2018-10-10 16:45:04,208 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-10 16:45:05,218 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 239 [2018-10-10 16:45:06,333 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 242 [2018-10-10 16:45:07,447 WARN L178 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-10 16:45:08,187 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 209 [2018-10-10 16:45:09,001 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-10 16:45:09,941 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2018-10-10 16:45:10,906 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 216 [2018-10-10 16:45:11,989 WARN L178 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 219 [2018-10-10 16:45:12,718 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-10 16:45:13,524 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2018-10-10 16:45:14,405 WARN L178 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-10 16:45:15,382 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-10 16:45:16,404 WARN L178 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2018-10-10 16:45:17,163 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-10 16:45:17,961 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2018-10-10 16:45:18,827 WARN L178 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2018-10-10 16:45:19,726 WARN L178 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2018-10-10 16:45:20,646 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2018-10-10 16:45:21,380 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2018-10-10 16:45:22,211 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 186 [2018-10-10 16:45:23,050 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 197 [2018-10-10 16:45:23,944 WARN L178 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-10 16:45:24,884 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-10 16:45:25,597 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-10 16:45:26,369 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 180 [2018-10-10 16:45:27,262 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-10 16:45:28,176 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 194 [2018-10-10 16:45:29,088 WARN L178 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2018-10-10 16:45:29,811 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-10 16:45:30,574 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-10 16:45:31,320 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2018-10-10 16:45:32,179 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-10 16:45:32,976 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-10 16:45:33,680 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2018-10-10 16:45:34,381 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2018-10-10 16:45:35,112 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-10-10 16:45:35,898 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 177 [2018-10-10 16:45:36,693 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-10 16:45:37,416 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-10 16:45:38,118 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-10 16:45:38,627 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-10 16:45:39,103 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-10 16:45:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:45:39,188 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-10 16:45:39,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-10 16:45:39,189 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 222 [2018-10-10 16:45:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:45:39,191 INFO L225 Difference]: With dead ends: 247 [2018-10-10 16:45:39,191 INFO L226 Difference]: Without dead ends: 247 [2018-10-10 16:45:39,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 78.6s TimeCoverageRelationStatistics Valid=3886, Invalid=15854, Unknown=0, NotChecked=0, Total=19740 [2018-10-10 16:45:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-10 16:45:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-10 16:45:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-10 16:45:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-10 16:45:39,198 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-10 16:45:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:45:39,199 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-10 16:45:39,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-10 16:45:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-10 16:45:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-10 16:45:39,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:45:39,200 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:45:39,201 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:45:39,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:45:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1440957251, now seen corresponding path program 13 times [2018-10-10 16:45:39,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:45:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:45:42,631 WARN L178 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-10 16:45:44,193 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 16:45:45,782 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 16:45:47,477 WARN L178 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-10 16:45:49,077 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 16:45:50,699 WARN L178 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-10 16:45:52,336 WARN L178 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-10 16:45:54,213 WARN L178 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 559 DAG size of output: 88 [2018-10-10 16:45:56,122 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 572 DAG size of output: 90 [2018-10-10 16:45:58,022 WARN L178 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-10 16:45:59,872 WARN L178 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-10 16:46:01,722 WARN L178 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 554 DAG size of output: 83 [2018-10-10 16:46:03,281 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 398 DAG size of output: 81 [2018-10-10 16:46:04,544 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 385 DAG size of output: 82 [2018-10-10 16:46:05,804 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-10 16:46:07,050 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-10 16:46:08,366 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 380 DAG size of output: 77 [2018-10-10 16:46:09,597 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 300 DAG size of output: 75 [2018-10-10 16:46:10,399 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-10 16:46:11,204 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 16:46:12,012 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-10 16:46:12,861 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-10 16:46:13,600 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-10 16:46:14,210 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-10 16:46:14,826 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 16:46:15,450 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-10 16:46:16,047 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-10 16:46:16,620 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-10 16:46:16,987 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 16:46:17,345 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 16:46:17,717 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-10 16:46:18,101 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-10 16:46:18,510 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-10 16:46:18,795 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-10 16:46:19,083 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 16:46:19,381 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-10 16:46:19,671 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-10 16:46:19,994 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-10 16:46:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 16:46:24,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 16:46:24,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-10 16:46:24,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-10 16:46:24,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-10 16:46:24,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2018-10-10 16:46:24,745 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 77 states. [2018-10-10 16:46:27,484 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-10 16:46:27,991 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-10 16:46:28,689 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-10 16:46:29,507 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-10 16:46:30,593 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-10 16:46:31,429 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-10 16:46:32,059 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-10 16:46:32,810 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-10 16:46:33,977 WARN L178 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-10 16:46:35,467 WARN L178 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 242 [2018-10-10 16:46:36,749 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 261 DAG size of output: 245 [2018-10-10 16:46:37,643 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2018-10-10 16:46:38,674 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 229 [2018-10-10 16:46:39,785 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 236 [2018-10-10 16:46:41,207 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 258 DAG size of output: 239 [2018-10-10 16:46:42,495 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 264 DAG size of output: 242 [2018-10-10 16:46:43,342 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 232 [2018-10-10 16:46:44,327 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2018-10-10 16:46:45,490 WARN L178 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 260 [2018-10-10 16:46:47,013 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 281 DAG size of output: 261 [2018-10-10 16:46:48,399 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 287 DAG size of output: 264 [2018-10-10 16:46:49,229 WARN L178 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 224 [2018-10-10 16:46:50,170 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-10 16:46:51,236 WARN L178 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 230 [2018-10-10 16:46:52,586 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 233 [2018-10-10 16:46:53,876 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 261 DAG size of output: 236 [2018-10-10 16:46:54,770 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 225 [2018-10-10 16:46:55,742 WARN L178 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-10 16:46:56,910 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 246 [2018-10-10 16:46:58,136 WARN L178 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 247 [2018-10-10 16:46:59,432 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 275 DAG size of output: 250 [2018-10-10 16:47:00,321 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 219 [2018-10-10 16:47:01,244 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 213 [2018-10-10 16:47:02,267 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 218 [2018-10-10 16:47:03,365 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2018-10-10 16:47:04,571 WARN L178 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 224 [2018-10-10 16:47:05,398 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 213 [2018-10-10 16:47:06,291 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-10 16:47:07,379 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 228 [2018-10-10 16:47:08,576 WARN L178 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 229 [2018-10-10 16:47:09,838 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 255 DAG size of output: 232 [2018-10-10 16:47:10,701 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 207 [2018-10-10 16:47:11,539 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2018-10-10 16:47:12,490 WARN L178 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2018-10-10 16:47:13,545 WARN L178 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-10-10 16:47:14,653 WARN L178 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 212 [2018-10-10 16:47:15,475 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 201 [2018-10-10 16:47:16,290 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-10 16:47:17,204 WARN L178 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 206 [2018-10-10 16:47:18,203 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 209 [2018-10-10 16:47:19,263 WARN L178 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 212 [2018-10-10 16:47:20,090 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-10 16:47:20,890 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-10 16:47:21,747 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-10 16:47:22,656 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-10 16:47:23,565 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2018-10-10 16:47:24,360 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2018-10-10 16:47:25,132 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-10 16:47:25,933 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-10 16:47:26,765 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2018-10-10 16:47:27,612 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-10 16:47:28,359 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-10 16:47:29,072 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-10 16:47:29,686 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-10 16:47:30,206 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-10 16:47:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 16:47:30,301 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-10 16:47:30,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-10 16:47:30,301 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 235 [2018-10-10 16:47:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 16:47:30,303 INFO L225 Difference]: With dead ends: 260 [2018-10-10 16:47:30,303 INFO L226 Difference]: Without dead ends: 260 [2018-10-10 16:47:30,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 103.2s TimeCoverageRelationStatistics Valid=3811, Invalid=18539, Unknown=0, NotChecked=0, Total=22350 [2018-10-10 16:47:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-10 16:47:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 249. [2018-10-10 16:47:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-10 16:47:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-10 16:47:30,308 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 235 [2018-10-10 16:47:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 16:47:30,308 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-10 16:47:30,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-10 16:47:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-10 16:47:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-10 16:47:30,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 16:47:30,310 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 16:47:30,310 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 16:47:30,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 16:47:30,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1547462109, now seen corresponding path program 14 times [2018-10-10 16:47:30,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 16:47:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 16:47:35,420 WARN L178 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 808 DAG size of output: 86 [2018-10-10 16:47:38,288 WARN L178 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-10 16:47:41,054 WARN L178 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-10 16:47:43,867 WARN L178 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 806 DAG size of output: 86 [2018-10-10 16:47:46,743 WARN L178 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-10 16:47:49,540 WARN L178 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-10 16:47:52,310 WARN L178 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 801 DAG size of output: 81 [2018-10-10 16:47:55,401 WARN L178 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 815 DAG size of output: 94 [2018-10-10 16:47:58,526 WARN L178 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 828 DAG size of output: 96 [2018-10-10 16:48:01,555 WARN L178 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 812 DAG size of output: 91 [2018-10-10 16:48:04,544 WARN L178 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 812 DAG size of output: 91 [2018-10-10 16:48:07,563 WARN L178 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 810 DAG size of output: 89 [2018-10-10 16:48:09,904 WARN L178 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 576 DAG size of output: 87 [2018-10-10 16:48:12,032 WARN L178 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 558 DAG size of output: 88 [2018-10-10 16:48:14,048 WARN L178 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-10 16:48:16,107 WARN L178 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-10 16:48:18,151 WARN L178 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 553 DAG size of output: 83 [2018-10-10 16:48:20,116 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 434 DAG size of output: 84 [2018-10-10 16:48:21,508 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-10 16:48:22,834 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-10 16:48:24,143 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 395 DAG size of output: 77