java -Xmx20000000000 -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/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc03-20.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d80e71f [2018-10-13 14:19:27,213 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-13 14:19:27,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-13 14:19:27,226 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-13 14:19:27,227 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-13 14:19:27,228 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-13 14:19:27,229 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-13 14:19:27,231 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-13 14:19:27,232 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-13 14:19:27,233 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-13 14:19:27,234 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-13 14:19:27,234 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-13 14:19:27,235 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-13 14:19:27,236 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-13 14:19:27,237 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-13 14:19:27,238 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-13 14:19:27,239 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-13 14:19:27,241 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-13 14:19:27,243 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-13 14:19:27,244 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-13 14:19:27,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-13 14:19:27,246 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-13 14:19:27,249 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-13 14:19:27,249 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-13 14:19:27,249 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-13 14:19:27,250 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-13 14:19:27,251 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-13 14:19:27,251 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-13 14:19:27,252 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-13 14:19:27,253 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-13 14:19:27,253 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-13 14:19:27,254 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-13 14:19:27,254 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-13 14:19:27,254 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-13 14:19:27,255 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-13 14:19:27,256 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-13 14:19:27,256 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-13 14:19:27,265 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-13 14:19:27,265 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-13 14:19:27,266 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-13 14:19:27,266 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-13 14:19:27,267 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-13 14:19:27,267 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-13 14:19:27,267 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-13 14:19:27,268 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-13 14:19:27,268 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-13 14:19:27,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-13 14:19:27,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-13 14:19:27,268 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-13 14:19:27,268 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-13 14:19:27,269 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-13 14:19:27,270 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-13 14:19:27,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-13 14:19:27,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-13 14:19:27,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-13 14:19:27,334 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-13 14:19:27,335 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-13 14:19:27,336 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-20.bpl [2018-10-13 14:19:27,336 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-20.bpl' [2018-10-13 14:19:27,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-13 14:19:27,394 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-13 14:19:27,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-13 14:19:27,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-13 14:19:27,395 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-13 14:19:27,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/1) ... [2018-10-13 14:19:27,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-13 14:19:27,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-13 14:19:27,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-13 14:19:27,454 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-13 14:19:27,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (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 [2018-10-13 14:19:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-13 14:19:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-13 14:19:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-13 14:19:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-13 14:19:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-10-13 14:19:28,284 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-13 14:19:28,285 INFO L202 PluginConnector]: Adding new model speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:19:28 BoogieIcfgContainer [2018-10-13 14:19:28,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-13 14:19:28,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-13 14:19:28,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-13 14:19:28,289 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-13 14:19:28,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 02:19:27" (1/2) ... [2018-10-13 14:19:28,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc5c99b and model type speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:19:28, skipping insertion in model container [2018-10-13 14:19:28,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:19:28" (2/2) ... [2018-10-13 14:19:28,293 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc03-20.bpl [2018-10-13 14:19:28,302 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-13 14:19:28,310 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2018-10-13 14:19:28,327 INFO L257 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2018-10-13 14:19:28,352 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-13 14:19:28,353 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-13 14:19:28,353 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-13 14:19:28,354 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-13 14:19:28,354 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-13 14:19:28,354 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-13 14:19:28,354 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-13 14:19:28,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-13 14:19:28,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-13 14:19:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2018-10-13 14:19:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 14:19:28,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:19:28,386 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] [2018-10-13 14:19:28,388 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:19:28,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:19:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash -512465212, now seen corresponding path program 1 times [2018-10-13 14:19:28,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:19:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:19:29,627 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-13 14:19:29,784 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-13 14:19:29,988 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-13 14:19:30,263 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-10-13 14:19:30,763 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2018-10-13 14:19:30,934 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2018-10-13 14:19:31,158 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-10-13 14:19:31,309 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2018-10-13 14:19:31,504 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-10-13 14:19:31,882 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2018-10-13 14:19:32,104 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2018-10-13 14:19:32,433 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 42 [2018-10-13 14:19:32,697 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2018-10-13 14:19:32,996 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2018-10-13 14:19:33,819 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 49 [2018-10-13 14:19:34,195 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 51 [2018-10-13 14:19:34,873 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 53 [2018-10-13 14:19:35,194 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-13 14:19:35,527 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 60 [2018-10-13 14:19:35,931 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 57 [2018-10-13 14:19:36,340 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 55 [2018-10-13 14:19:36,734 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2018-10-13 14:19:37,028 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 42 [2018-10-13 14:19:37,220 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 34 [2018-10-13 14:19:37,402 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 32 [2018-10-13 14:19:37,581 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 30 [2018-10-13 14:19:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:19:38,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:19:38,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2018-10-13 14:19:38,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:19:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:19:38,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1435, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:19:38,899 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 42 states. [2018-10-13 14:19:40,503 WARN L178 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 32 [2018-10-13 14:19:41,013 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-13 14:19:41,268 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2018-10-13 14:19:43,651 WARN L178 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2018-10-13 14:19:45,470 WARN L178 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2018-10-13 14:19:45,639 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2018-10-13 14:19:45,805 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 45 [2018-10-13 14:19:46,004 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-13 14:19:46,204 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2018-10-13 14:19:46,386 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2018-10-13 14:19:46,526 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2018-10-13 14:19:46,728 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-13 14:19:47,025 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2018-10-13 14:19:47,447 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2018-10-13 14:19:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:19:51,036 INFO L93 Difference]: Finished difference Result 816 states and 1175 transitions. [2018-10-13 14:19:51,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 14:19:51,039 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-13 14:19:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:19:51,062 INFO L225 Difference]: With dead ends: 816 [2018-10-13 14:19:51,062 INFO L226 Difference]: Without dead ends: 778 [2018-10-13 14:19:51,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1092, Invalid=2690, Unknown=0, NotChecked=0, Total=3782 [2018-10-13 14:19:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2018-10-13 14:19:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 84. [2018-10-13 14:19:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-13 14:19:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2018-10-13 14:19:51,137 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 42 [2018-10-13 14:19:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:19:51,137 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2018-10-13 14:19:51,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:19:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2018-10-13 14:19:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 14:19:51,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:19:51,140 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] [2018-10-13 14:19:51,141 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:19:51,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:19:51,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1293447770, now seen corresponding path program 1 times [2018-10-13 14:19:51,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:19:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:19:51,880 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2018-10-13 14:19:52,048 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2018-10-13 14:19:52,318 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2018-10-13 14:19:52,596 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 54 [2018-10-13 14:19:52,779 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 51 [2018-10-13 14:19:52,962 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 45 [2018-10-13 14:19:53,167 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 47 [2018-10-13 14:19:53,417 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 49 [2018-10-13 14:19:53,664 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-13 14:19:54,231 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 63 [2018-10-13 14:19:54,559 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 60 [2018-10-13 14:19:54,878 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 57 [2018-10-13 14:19:55,332 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 53 [2018-10-13 14:19:55,589 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 51 [2018-10-13 14:19:56,063 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 49 [2018-10-13 14:19:56,351 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 46 [2018-10-13 14:19:56,750 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 36 [2018-10-13 14:19:56,949 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 34 [2018-10-13 14:19:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:19:57,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:19:57,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2018-10-13 14:19:57,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-13 14:19:57,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-13 14:19:57,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 14:19:57,650 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand 38 states. [2018-10-13 14:19:58,497 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2018-10-13 14:19:58,787 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-13 14:19:59,797 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2018-10-13 14:20:00,551 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-13 14:20:00,920 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-13 14:20:01,305 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2018-10-13 14:20:01,676 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2018-10-13 14:20:02,000 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2018-10-13 14:20:02,362 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2018-10-13 14:20:02,679 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2018-10-13 14:20:03,040 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2018-10-13 14:20:03,327 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2018-10-13 14:20:03,728 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2018-10-13 14:20:04,060 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2018-10-13 14:20:04,416 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-13 14:20:04,700 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2018-10-13 14:20:04,977 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2018-10-13 14:20:05,384 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-13 14:20:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:20:08,471 INFO L93 Difference]: Finished difference Result 741 states and 1104 transitions. [2018-10-13 14:20:08,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 14:20:08,472 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 43 [2018-10-13 14:20:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:20:08,478 INFO L225 Difference]: With dead ends: 741 [2018-10-13 14:20:08,478 INFO L226 Difference]: Without dead ends: 741 [2018-10-13 14:20:08,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=954, Invalid=2706, Unknown=0, NotChecked=0, Total=3660 [2018-10-13 14:20:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-13 14:20:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 89. [2018-10-13 14:20:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-13 14:20:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 169 transitions. [2018-10-13 14:20:08,497 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 169 transitions. Word has length 43 [2018-10-13 14:20:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:20:08,498 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 169 transitions. [2018-10-13 14:20:08,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-13 14:20:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 169 transitions. [2018-10-13 14:20:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:20:08,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:20:08,500 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] [2018-10-13 14:20:08,500 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:20:08,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:20:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1442095537, now seen corresponding path program 1 times [2018-10-13 14:20:08,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:20:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:20:09,184 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-10-13 14:20:09,943 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-13 14:20:10,127 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-10-13 14:20:10,350 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2018-10-13 14:20:10,601 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2018-10-13 14:20:10,867 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2018-10-13 14:20:11,194 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 91 [2018-10-13 14:20:11,520 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-10-13 14:20:11,842 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2018-10-13 14:20:12,157 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2018-10-13 14:20:12,443 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 72 [2018-10-13 14:20:12,759 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2018-10-13 14:20:13,057 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2018-10-13 14:20:13,351 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2018-10-13 14:20:13,641 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 64 [2018-10-13 14:20:13,936 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62 [2018-10-13 14:20:14,125 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2018-10-13 14:20:14,296 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2018-10-13 14:20:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:20:15,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:20:15,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:20:15,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:20:15,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:20:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:20:15,257 INFO L87 Difference]: Start difference. First operand 89 states and 169 transitions. Second operand 42 states. [2018-10-13 14:20:16,299 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 53 [2018-10-13 14:20:16,677 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2018-10-13 14:20:17,055 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2018-10-13 14:20:17,453 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 79 [2018-10-13 14:20:18,461 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 86 [2018-10-13 14:20:18,974 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 97 [2018-10-13 14:20:19,437 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 85 [2018-10-13 14:20:19,962 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 96 [2018-10-13 14:20:20,450 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 84 [2018-10-13 14:20:20,957 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 95 [2018-10-13 14:20:21,451 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 83 [2018-10-13 14:20:22,027 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 93 [2018-10-13 14:20:22,473 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 82 [2018-10-13 14:20:23,000 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 91 [2018-10-13 14:20:23,448 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 81 [2018-10-13 14:20:23,982 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 89 [2018-10-13 14:20:24,419 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 81 [2018-10-13 14:20:24,871 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 85 [2018-10-13 14:20:25,392 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 87 [2018-10-13 14:20:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:20:29,549 INFO L93 Difference]: Finished difference Result 744 states and 1127 transitions. [2018-10-13 14:20:29,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-13 14:20:29,549 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 44 [2018-10-13 14:20:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:20:29,554 INFO L225 Difference]: With dead ends: 744 [2018-10-13 14:20:29,555 INFO L226 Difference]: Without dead ends: 744 [2018-10-13 14:20:29,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=1038, Invalid=3122, Unknown=0, NotChecked=0, Total=4160 [2018-10-13 14:20:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-13 14:20:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 87. [2018-10-13 14:20:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-13 14:20:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 146 transitions. [2018-10-13 14:20:29,566 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 146 transitions. Word has length 44 [2018-10-13 14:20:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:20:29,567 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 146 transitions. [2018-10-13 14:20:29,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:20:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 146 transitions. [2018-10-13 14:20:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:20:29,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:20:29,569 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] [2018-10-13 14:20:29,570 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:20:29,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:20:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1442096529, now seen corresponding path program 1 times [2018-10-13 14:20:29,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:20:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:20:30,131 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:20:30,740 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2018-10-13 14:20:30,997 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2018-10-13 14:20:31,373 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 66 [2018-10-13 14:20:31,737 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 74 [2018-10-13 14:20:32,246 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 82 [2018-10-13 14:20:32,570 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 90 [2018-10-13 14:20:32,955 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 95 [2018-10-13 14:20:33,345 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 93 [2018-10-13 14:20:33,766 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 99 [2018-10-13 14:20:34,146 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 96 [2018-10-13 14:20:34,566 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 101 [2018-10-13 14:20:35,124 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 98 [2018-10-13 14:20:35,511 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 93 [2018-10-13 14:20:35,899 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 89 [2018-10-13 14:20:36,345 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 87 [2018-10-13 14:20:36,745 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 85 [2018-10-13 14:20:37,162 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 83 [2018-10-13 14:20:37,555 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 81 [2018-10-13 14:20:37,979 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 78 [2018-10-13 14:20:38,305 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 51 [2018-10-13 14:20:38,594 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-13 14:20:38,863 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2018-10-13 14:20:39,230 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2018-10-13 14:20:39,544 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2018-10-13 14:20:39,824 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2018-10-13 14:20:40,089 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 28 [2018-10-13 14:20:40,298 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 17 [2018-10-13 14:20:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:20:40,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:20:40,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:20:40,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:20:40,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:20:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:20:40,773 INFO L87 Difference]: Start difference. First operand 87 states and 146 transitions. Second operand 43 states. [2018-10-13 14:20:41,791 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2018-10-13 14:20:42,008 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2018-10-13 14:20:42,251 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 57 [2018-10-13 14:20:42,554 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 68 [2018-10-13 14:20:42,992 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2018-10-13 14:20:43,437 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 81 [2018-10-13 14:20:43,959 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 84 [2018-10-13 14:20:45,151 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 107 [2018-10-13 14:20:45,718 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 94 [2018-10-13 14:20:46,293 WARN L178 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 102 [2018-10-13 14:20:46,838 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 92 [2018-10-13 14:20:47,445 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 102 [2018-10-13 14:20:48,176 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 93 [2018-10-13 14:20:48,771 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 98 [2018-10-13 14:20:49,320 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 90 [2018-10-13 14:20:49,813 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 86 [2018-10-13 14:20:50,423 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 98 [2018-10-13 14:20:51,089 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 90 [2018-10-13 14:20:51,686 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 94 [2018-10-13 14:20:52,222 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 87 [2018-10-13 14:20:52,878 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 96 [2018-10-13 14:20:53,471 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 88 [2018-10-13 14:20:54,047 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 86 [2018-10-13 14:20:54,674 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 93 [2018-10-13 14:20:55,280 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 104 [2018-10-13 14:20:55,834 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 94 [2018-10-13 14:20:56,456 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 100 [2018-10-13 14:20:57,020 WARN L178 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 92 [2018-10-13 14:20:57,677 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 96 [2018-10-13 14:20:58,235 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 89 [2018-10-13 14:20:58,830 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 88 [2018-10-13 14:20:59,420 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 95 [2018-10-13 14:21:00,059 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 105 [2018-10-13 14:21:01,312 WARN L178 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 92 [2018-10-13 14:21:02,602 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 100 [2018-10-13 14:21:03,203 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 96 [2018-10-13 14:21:03,834 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 94 [2018-10-13 14:21:04,640 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 91 [2018-10-13 14:21:06,055 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 88 [2018-10-13 14:21:06,803 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 86 [2018-10-13 14:21:09,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:21:09,942 INFO L93 Difference]: Finished difference Result 684 states and 1281 transitions. [2018-10-13 14:21:09,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-13 14:21:09,943 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 44 [2018-10-13 14:21:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:21:09,948 INFO L225 Difference]: With dead ends: 684 [2018-10-13 14:21:09,948 INFO L226 Difference]: Without dead ends: 684 [2018-10-13 14:21:09,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=2310, Invalid=5346, Unknown=0, NotChecked=0, Total=7656 [2018-10-13 14:21:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2018-10-13 14:21:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 87. [2018-10-13 14:21:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-13 14:21:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 146 transitions. [2018-10-13 14:21:09,959 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 146 transitions. Word has length 44 [2018-10-13 14:21:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:21:09,960 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 146 transitions. [2018-10-13 14:21:09,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:21:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 146 transitions. [2018-10-13 14:21:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:21:09,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:21:09,961 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] [2018-10-13 14:21:09,962 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:21:09,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:21:09,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1442095661, now seen corresponding path program 1 times [2018-10-13 14:21:09,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:21:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:21:10,408 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:21:11,484 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2018-10-13 14:21:11,965 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2018-10-13 14:21:12,217 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2018-10-13 14:21:12,452 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2018-10-13 14:21:12,668 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 64 [2018-10-13 14:21:12,899 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 66 [2018-10-13 14:21:13,155 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 74 [2018-10-13 14:21:13,408 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 71 [2018-10-13 14:21:13,651 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2018-10-13 14:21:13,885 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2018-10-13 14:21:14,098 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-13 14:21:14,313 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2018-10-13 14:21:14,524 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2018-10-13 14:21:14,734 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 52 [2018-10-13 14:21:14,895 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2018-10-13 14:21:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:21:16,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:21:16,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-13 14:21:16,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-13 14:21:16,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-13 14:21:16,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1499, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 14:21:16,273 INFO L87 Difference]: Start difference. First operand 87 states and 146 transitions. Second operand 41 states. [2018-10-13 14:21:17,152 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2018-10-13 14:21:17,398 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2018-10-13 14:21:17,685 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-13 14:21:18,050 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 58 [2018-10-13 14:21:18,796 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2018-10-13 14:21:19,174 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2018-10-13 14:21:19,541 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2018-10-13 14:21:19,898 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 66 [2018-10-13 14:21:20,297 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2018-10-13 14:21:20,632 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 65 [2018-10-13 14:21:21,019 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 73 [2018-10-13 14:21:21,353 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 65 [2018-10-13 14:21:21,764 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2018-10-13 14:21:22,090 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 63 [2018-10-13 14:21:22,424 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 61 [2018-10-13 14:21:22,823 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2018-10-13 14:21:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:21:26,107 INFO L93 Difference]: Finished difference Result 633 states and 1079 transitions. [2018-10-13 14:21:26,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-13 14:21:26,107 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 44 [2018-10-13 14:21:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:21:26,112 INFO L225 Difference]: With dead ends: 633 [2018-10-13 14:21:26,112 INFO L226 Difference]: Without dead ends: 633 [2018-10-13 14:21:26,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=932, Invalid=2974, Unknown=0, NotChecked=0, Total=3906 [2018-10-13 14:21:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-13 14:21:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 91. [2018-10-13 14:21:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-13 14:21:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 190 transitions. [2018-10-13 14:21:26,121 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 190 transitions. Word has length 44 [2018-10-13 14:21:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:21:26,122 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 190 transitions. [2018-10-13 14:21:26,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-13 14:21:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 190 transitions. [2018-10-13 14:21:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:21:26,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:21:26,123 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] [2018-10-13 14:21:26,124 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:21:26,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:21:26,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1442096653, now seen corresponding path program 1 times [2018-10-13 14:21:26,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:21:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:21:26,665 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:21:26,873 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-13 14:21:27,180 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 27 [2018-10-13 14:21:27,339 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 28 [2018-10-13 14:21:27,542 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 37 [2018-10-13 14:21:27,847 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2018-10-13 14:21:28,333 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 55 [2018-10-13 14:21:28,758 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 60 [2018-10-13 14:21:29,030 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 42 [2018-10-13 14:21:29,341 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 43 [2018-10-13 14:21:30,111 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 45 [2018-10-13 14:21:30,470 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 50 [2018-10-13 14:21:30,768 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 42 [2018-10-13 14:21:31,032 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 44 [2018-10-13 14:21:31,314 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 46 [2018-10-13 14:21:31,656 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 54 [2018-10-13 14:21:32,017 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 51 [2018-10-13 14:21:32,601 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 48 [2018-10-13 14:21:32,908 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 44 [2018-10-13 14:21:33,224 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 41 [2018-10-13 14:21:33,581 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 40 [2018-10-13 14:21:33,844 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 38 [2018-10-13 14:21:34,089 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 36 [2018-10-13 14:21:34,321 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 34 [2018-10-13 14:21:34,538 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 32 [2018-10-13 14:21:34,729 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 30 [2018-10-13 14:21:34,921 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2018-10-13 14:21:35,128 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 26 [2018-10-13 14:21:35,316 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 24 [2018-10-13 14:21:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:21:35,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:21:35,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-13 14:21:35,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-13 14:21:35,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-13 14:21:35,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 14:21:35,896 INFO L87 Difference]: Start difference. First operand 91 states and 190 transitions. Second operand 41 states. [2018-10-13 14:21:37,288 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2018-10-13 14:21:37,445 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 52 [2018-10-13 14:21:37,625 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-13 14:21:37,854 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 62 [2018-10-13 14:21:38,005 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 51 [2018-10-13 14:21:38,175 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2018-10-13 14:21:38,326 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 49 [2018-10-13 14:21:38,514 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2018-10-13 14:21:38,659 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 47 [2018-10-13 14:21:38,850 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2018-10-13 14:21:39,000 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 46 [2018-10-13 14:21:39,190 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2018-10-13 14:21:39,339 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 45 [2018-10-13 14:21:39,678 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 54 [2018-10-13 14:21:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:21:42,406 INFO L93 Difference]: Finished difference Result 775 states and 1458 transitions. [2018-10-13 14:21:42,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 14:21:42,406 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 44 [2018-10-13 14:21:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:21:42,412 INFO L225 Difference]: With dead ends: 775 [2018-10-13 14:21:42,412 INFO L226 Difference]: Without dead ends: 775 [2018-10-13 14:21:42,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1024, Invalid=2882, Unknown=0, NotChecked=0, Total=3906 [2018-10-13 14:21:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2018-10-13 14:21:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 97. [2018-10-13 14:21:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-13 14:21:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 256 transitions. [2018-10-13 14:21:42,422 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 256 transitions. Word has length 44 [2018-10-13 14:21:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:21:42,422 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 256 transitions. [2018-10-13 14:21:42,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-13 14:21:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 256 transitions. [2018-10-13 14:21:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:21:42,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:21:42,424 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] [2018-10-13 14:21:42,424 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:21:42,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:21:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1442096901, now seen corresponding path program 1 times [2018-10-13 14:21:42,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:21:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:21:42,952 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:21:43,519 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2018-10-13 14:21:44,263 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2018-10-13 14:21:44,458 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2018-10-13 14:21:44,711 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 77 [2018-10-13 14:21:45,080 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 90 [2018-10-13 14:21:45,497 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 97 [2018-10-13 14:21:46,215 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 114 [2018-10-13 14:21:46,597 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 78 [2018-10-13 14:21:47,105 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 88 [2018-10-13 14:21:47,656 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 90 [2018-10-13 14:21:48,126 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 85 [2018-10-13 14:21:48,720 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 92 [2018-10-13 14:21:49,411 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 103 [2018-10-13 14:21:50,095 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 100 [2018-10-13 14:21:50,786 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 97 [2018-10-13 14:21:51,422 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 94 [2018-10-13 14:21:52,020 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 89 [2018-10-13 14:21:52,607 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 86 [2018-10-13 14:21:52,943 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 60 [2018-10-13 14:21:53,295 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 57 [2018-10-13 14:21:53,605 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 53 [2018-10-13 14:21:53,993 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 53 [2018-10-13 14:21:54,380 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 51 [2018-10-13 14:21:54,698 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 47 [2018-10-13 14:21:54,914 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2018-10-13 14:21:55,140 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2018-10-13 14:21:55,347 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2018-10-13 14:21:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:21:55,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:21:55,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:21:55,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:21:55,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:21:55,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1598, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:21:55,826 INFO L87 Difference]: Start difference. First operand 97 states and 256 transitions. Second operand 42 states. [2018-10-13 14:21:57,043 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 53 [2018-10-13 14:21:57,280 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2018-10-13 14:21:57,573 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 65 [2018-10-13 14:21:57,945 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 72 [2018-10-13 14:21:58,397 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 83 [2018-10-13 14:21:58,814 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 95 [2018-10-13 14:21:59,286 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 99 [2018-10-13 14:21:59,850 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 98 [2018-10-13 14:22:01,100 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 110 [2018-10-13 14:22:01,745 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 109 [2018-10-13 14:22:02,268 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 116 [2018-10-13 14:22:02,890 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 110 [2018-10-13 14:22:03,627 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 110 [2018-10-13 14:22:04,298 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 113 [2018-10-13 14:22:04,885 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 102 [2018-10-13 14:22:05,570 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 113 [2018-10-13 14:22:06,164 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 101 [2018-10-13 14:22:06,747 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 101 [2018-10-13 14:22:07,422 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 112 [2018-10-13 14:22:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:22:11,345 INFO L93 Difference]: Finished difference Result 606 states and 1173 transitions. [2018-10-13 14:22:11,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-13 14:22:11,345 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 44 [2018-10-13 14:22:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:22:11,350 INFO L225 Difference]: With dead ends: 606 [2018-10-13 14:22:11,350 INFO L226 Difference]: Without dead ends: 606 [2018-10-13 14:22:11,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=1078, Invalid=3478, Unknown=0, NotChecked=0, Total=4556 [2018-10-13 14:22:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2018-10-13 14:22:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 105. [2018-10-13 14:22:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-13 14:22:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 344 transitions. [2018-10-13 14:22:11,359 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 344 transitions. Word has length 44 [2018-10-13 14:22:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:22:11,359 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 344 transitions. [2018-10-13 14:22:11,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:22:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 344 transitions. [2018-10-13 14:22:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:22:11,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:22:11,360 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] [2018-10-13 14:22:11,361 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:22:11,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:22:11,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1442096157, now seen corresponding path program 1 times [2018-10-13 14:22:11,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:22:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:22:12,183 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-13 14:22:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:22:14,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:22:14,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:22:14,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:22:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:22:14,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1486, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:22:14,575 INFO L87 Difference]: Start difference. First operand 105 states and 344 transitions. Second operand 42 states. [2018-10-13 14:22:15,737 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2018-10-13 14:22:15,966 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-13 14:22:16,248 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2018-10-13 14:22:16,976 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2018-10-13 14:22:17,251 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2018-10-13 14:22:17,503 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2018-10-13 14:22:17,760 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 75 [2018-10-13 14:22:17,980 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2018-10-13 14:22:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:22:20,053 INFO L93 Difference]: Finished difference Result 358 states and 791 transitions. [2018-10-13 14:22:20,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 14:22:20,054 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 44 [2018-10-13 14:22:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:22:20,057 INFO L225 Difference]: With dead ends: 358 [2018-10-13 14:22:20,057 INFO L226 Difference]: Without dead ends: 358 [2018-10-13 14:22:20,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=777, Invalid=2763, Unknown=0, NotChecked=0, Total=3540 [2018-10-13 14:22:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-10-13 14:22:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 97. [2018-10-13 14:22:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-13 14:22:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 256 transitions. [2018-10-13 14:22:20,064 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 256 transitions. Word has length 44 [2018-10-13 14:22:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:22:20,064 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 256 transitions. [2018-10-13 14:22:20,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:22:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 256 transitions. [2018-10-13 14:22:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:22:20,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:22:20,065 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] [2018-10-13 14:22:20,066 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:22:20,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:22:20,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1442097149, now seen corresponding path program 1 times [2018-10-13 14:22:20,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:22:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:22:20,697 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:22:21,241 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2018-10-13 14:22:21,561 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 45 [2018-10-13 14:22:21,884 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 56 [2018-10-13 14:22:22,526 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 55 [2018-10-13 14:22:23,225 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 68 [2018-10-13 14:22:24,258 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 87 [2018-10-13 14:22:25,516 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 280 DAG size of output: 116 [2018-10-13 14:22:27,108 WARN L178 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 298 DAG size of output: 122 [2018-10-13 14:22:28,985 WARN L178 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 340 DAG size of output: 147 [2018-10-13 14:22:31,395 WARN L178 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 388 DAG size of output: 163 [2018-10-13 14:22:32,056 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 59 [2018-10-13 14:22:32,619 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 61 [2018-10-13 14:22:33,198 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 63 [2018-10-13 14:22:33,816 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 73 [2018-10-13 14:22:34,432 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 70 [2018-10-13 14:22:35,192 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 67 [2018-10-13 14:22:35,801 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 64 [2018-10-13 14:22:36,285 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 61 [2018-10-13 14:22:36,748 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 58 [2018-10-13 14:22:37,417 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 43 [2018-10-13 14:22:38,068 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 40 [2018-10-13 14:22:38,555 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 34 [2018-10-13 14:22:39,033 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 31 [2018-10-13 14:22:39,289 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 29 [2018-10-13 14:22:39,521 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 27 [2018-10-13 14:22:39,730 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 25 [2018-10-13 14:22:40,036 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 22 [2018-10-13 14:22:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:22:40,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:22:40,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:22:40,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:22:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:22:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1532, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:22:40,358 INFO L87 Difference]: Start difference. First operand 97 states and 256 transitions. Second operand 42 states. [2018-10-13 14:22:41,304 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-13 14:22:41,655 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2018-10-13 14:22:42,120 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2018-10-13 14:22:42,633 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 78 [2018-10-13 14:22:43,179 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 81 [2018-10-13 14:22:43,753 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 85 [2018-10-13 14:22:44,825 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 95 [2018-10-13 14:22:45,432 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 94 [2018-10-13 14:22:46,043 WARN L178 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 97 [2018-10-13 14:22:46,614 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 94 [2018-10-13 14:22:47,222 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 94 [2018-10-13 14:22:47,877 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 98 [2018-10-13 14:22:48,449 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 92 [2018-10-13 14:22:49,147 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 96 [2018-10-13 14:22:49,711 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 90 [2018-10-13 14:22:50,284 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 88 [2018-10-13 14:22:50,917 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 96 [2018-10-13 14:22:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:22:54,022 INFO L93 Difference]: Finished difference Result 630 states and 1437 transitions. [2018-10-13 14:22:54,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-13 14:22:54,023 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 44 [2018-10-13 14:22:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:22:54,028 INFO L225 Difference]: With dead ends: 630 [2018-10-13 14:22:54,028 INFO L226 Difference]: Without dead ends: 630 [2018-10-13 14:22:54,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=1018, Invalid=3142, Unknown=0, NotChecked=0, Total=4160 [2018-10-13 14:22:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2018-10-13 14:22:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 105. [2018-10-13 14:22:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-13 14:22:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 344 transitions. [2018-10-13 14:22:54,036 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 344 transitions. Word has length 44 [2018-10-13 14:22:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:22:54,036 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 344 transitions. [2018-10-13 14:22:54,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:22:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 344 transitions. [2018-10-13 14:22:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:22:54,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:22:54,038 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] [2018-10-13 14:22:54,038 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:22:54,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:22:54,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1442097335, now seen corresponding path program 1 times [2018-10-13 14:22:54,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:22:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:22:54,529 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:22:55,032 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2018-10-13 14:22:55,201 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-10-13 14:22:55,496 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2018-10-13 14:22:55,855 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2018-10-13 14:22:56,354 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 100 [2018-10-13 14:22:56,915 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 112 [2018-10-13 14:22:57,825 WARN L178 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 127 [2018-10-13 14:22:58,923 WARN L178 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 140 [2018-10-13 14:23:00,194 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 266 DAG size of output: 151 [2018-10-13 14:23:02,211 WARN L178 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 296 DAG size of output: 167 [2018-10-13 14:23:02,917 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 86 [2018-10-13 14:23:03,639 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 89 [2018-10-13 14:23:04,344 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 86 [2018-10-13 14:23:05,064 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 83 [2018-10-13 14:23:05,736 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 77 [2018-10-13 14:23:06,425 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 74 [2018-10-13 14:23:07,123 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 71 [2018-10-13 14:23:07,620 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 52 [2018-10-13 14:23:08,165 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 50 [2018-10-13 14:23:08,651 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 46 [2018-10-13 14:23:09,119 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 45 [2018-10-13 14:23:09,559 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 42 [2018-10-13 14:23:09,966 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 43 [2018-10-13 14:23:10,280 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 27 [2018-10-13 14:23:10,656 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 19 [2018-10-13 14:23:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:23:11,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:23:11,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:23:11,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:23:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:23:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1651, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:23:11,278 INFO L87 Difference]: Start difference. First operand 105 states and 344 transitions. Second operand 43 states. [2018-10-13 14:23:12,206 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-13 14:23:12,442 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2018-10-13 14:23:12,740 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2018-10-13 14:23:13,129 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 73 [2018-10-13 14:23:13,682 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 89 [2018-10-13 14:23:14,387 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 92 [2018-10-13 14:23:14,975 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 95 [2018-10-13 14:23:16,165 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 97 [2018-10-13 14:23:16,886 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 115 [2018-10-13 14:23:17,585 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 104 [2018-10-13 14:23:18,267 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 108 [2018-10-13 14:23:18,921 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 101 [2018-10-13 14:23:19,617 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 101 [2018-10-13 14:23:20,343 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 107 [2018-10-13 14:23:20,985 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 100 [2018-10-13 14:23:21,699 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 106 [2018-10-13 14:23:22,348 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 99 [2018-10-13 14:23:23,075 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 105 [2018-10-13 14:23:23,716 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 98 [2018-10-13 14:23:24,458 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 104 [2018-10-13 14:23:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:23:28,816 INFO L93 Difference]: Finished difference Result 715 states and 1620 transitions. [2018-10-13 14:23:28,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-13 14:23:28,818 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 44 [2018-10-13 14:23:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:23:28,823 INFO L225 Difference]: With dead ends: 715 [2018-10-13 14:23:28,823 INFO L226 Difference]: Without dead ends: 714 [2018-10-13 14:23:28,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=1080, Invalid=3342, Unknown=0, NotChecked=0, Total=4422 [2018-10-13 14:23:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2018-10-13 14:23:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 126. [2018-10-13 14:23:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-13 14:23:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 402 transitions. [2018-10-13 14:23:28,831 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 402 transitions. Word has length 44 [2018-10-13 14:23:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:23:28,832 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 402 transitions. [2018-10-13 14:23:28,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:23:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 402 transitions. [2018-10-13 14:23:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 14:23:28,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:23:28,833 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] [2018-10-13 14:23:28,833 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:23:28,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:23:28,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1442175366, now seen corresponding path program 1 times [2018-10-13 14:23:28,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:23:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:23:29,267 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:23:29,835 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 31 [2018-10-13 14:23:30,037 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 35 [2018-10-13 14:23:30,253 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2018-10-13 14:23:30,752 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 14:23:30,884 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-13 14:23:31,018 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 14:23:31,168 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-13 14:23:31,343 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-13 14:23:31,512 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2018-10-13 14:23:31,674 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-13 14:23:31,832 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 14:23:31,985 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-13 14:23:32,162 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-13 14:23:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:23:33,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:23:33,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2018-10-13 14:23:33,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-13 14:23:33,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-13 14:23:33,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1155, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 14:23:33,114 INFO L87 Difference]: Start difference. First operand 126 states and 402 transitions. Second operand 38 states. [2018-10-13 14:23:34,243 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-13 14:23:34,880 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-13 14:23:35,030 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-10-13 14:23:36,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:23:36,349 INFO L93 Difference]: Finished difference Result 273 states and 845 transitions. [2018-10-13 14:23:36,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 14:23:36,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 44 [2018-10-13 14:23:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:23:36,353 INFO L225 Difference]: With dead ends: 273 [2018-10-13 14:23:36,353 INFO L226 Difference]: Without dead ends: 273 [2018-10-13 14:23:36,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 14:23:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-13 14:23:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 151. [2018-10-13 14:23:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-13 14:23:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 648 transitions. [2018-10-13 14:23:36,359 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 648 transitions. Word has length 44 [2018-10-13 14:23:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:23:36,359 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 648 transitions. [2018-10-13 14:23:36,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-13 14:23:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 648 transitions. [2018-10-13 14:23:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:23:36,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:23:36,361 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] [2018-10-13 14:23:36,363 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:23:36,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:23:36,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1755319597, now seen corresponding path program 1 times [2018-10-13 14:23:36,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:23:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:23:36,746 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:23:37,572 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-13 14:23:37,742 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2018-10-13 14:23:37,949 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2018-10-13 14:23:38,181 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2018-10-13 14:23:38,412 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 78 [2018-10-13 14:23:38,661 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 83 [2018-10-13 14:23:38,898 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 82 [2018-10-13 14:23:39,255 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 88 [2018-10-13 14:23:39,526 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 85 [2018-10-13 14:23:39,796 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 82 [2018-10-13 14:23:40,053 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2018-10-13 14:23:40,316 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2018-10-13 14:23:40,544 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-13 14:23:40,756 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-10-13 14:23:40,964 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-10-13 14:23:41,194 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2018-10-13 14:23:41,417 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2018-10-13 14:23:41,842 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 41 [2018-10-13 14:23:42,049 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2018-10-13 14:23:42,260 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2018-10-13 14:23:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:23:42,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:23:42,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:23:42,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:23:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:23:42,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1431, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:23:42,734 INFO L87 Difference]: Start difference. First operand 151 states and 648 transitions. Second operand 40 states. [2018-10-13 14:23:43,795 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-13 14:23:44,008 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-13 14:23:44,292 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2018-10-13 14:23:44,601 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2018-10-13 14:23:44,932 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2018-10-13 14:23:45,300 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2018-10-13 14:23:45,689 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2018-10-13 14:23:46,108 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2018-10-13 14:23:46,485 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 80 [2018-10-13 14:23:47,465 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2018-10-13 14:23:47,976 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2018-10-13 14:23:48,329 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 86 [2018-10-13 14:23:48,708 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 85 [2018-10-13 14:23:49,259 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 92 [2018-10-13 14:23:49,664 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 84 [2018-10-13 14:23:50,041 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 83 [2018-10-13 14:23:50,363 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 82 [2018-10-13 14:23:50,892 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2018-10-13 14:23:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:23:54,491 INFO L93 Difference]: Finished difference Result 633 states and 1932 transitions. [2018-10-13 14:23:54,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-13 14:23:54,491 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 45 [2018-10-13 14:23:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:23:54,497 INFO L225 Difference]: With dead ends: 633 [2018-10-13 14:23:54,497 INFO L226 Difference]: Without dead ends: 633 [2018-10-13 14:23:54,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1015, Invalid=3275, Unknown=0, NotChecked=0, Total=4290 [2018-10-13 14:23:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-13 14:23:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 165. [2018-10-13 14:23:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-13 14:23:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 802 transitions. [2018-10-13 14:23:54,505 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 802 transitions. Word has length 45 [2018-10-13 14:23:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:23:54,505 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 802 transitions. [2018-10-13 14:23:54,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:23:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 802 transitions. [2018-10-13 14:23:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:23:54,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:23:54,506 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] [2018-10-13 14:23:54,507 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:23:54,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:23:54,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1755323441, now seen corresponding path program 1 times [2018-10-13 14:23:54,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:23:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:23:55,272 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2018-10-13 14:23:55,429 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-13 14:23:55,571 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-10-13 14:23:55,733 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-13 14:23:55,958 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2018-10-13 14:23:56,199 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 89 [2018-10-13 14:23:56,454 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 95 [2018-10-13 14:23:56,737 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 106 [2018-10-13 14:23:57,021 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 98 [2018-10-13 14:23:57,320 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 94 [2018-10-13 14:23:57,648 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 100 [2018-10-13 14:23:57,972 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 97 [2018-10-13 14:23:58,306 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 94 [2018-10-13 14:23:58,629 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2018-10-13 14:23:59,009 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2018-10-13 14:23:59,375 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2018-10-13 14:23:59,741 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2018-10-13 14:24:00,082 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-13 14:24:00,382 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-13 14:24:00,649 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2018-10-13 14:24:00,913 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2018-10-13 14:24:01,176 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2018-10-13 14:24:01,425 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2018-10-13 14:24:01,671 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2018-10-13 14:24:01,875 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 22 [2018-10-13 14:24:02,071 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 20 [2018-10-13 14:24:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:24:02,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:24:02,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-13 14:24:02,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-13 14:24:02,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-13 14:24:02,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 14:24:02,449 INFO L87 Difference]: Start difference. First operand 165 states and 802 transitions. Second operand 41 states. [2018-10-13 14:24:03,656 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-13 14:24:03,981 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-10-13 14:24:04,415 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-13 14:24:04,916 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2018-10-13 14:24:05,460 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 91 [2018-10-13 14:24:05,996 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 95 [2018-10-13 14:24:06,651 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 98 [2018-10-13 14:24:07,772 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 115 [2018-10-13 14:24:08,442 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 113 [2018-10-13 14:24:09,087 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 108 [2018-10-13 14:24:09,785 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 109 [2018-10-13 14:24:10,462 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 106 [2018-10-13 14:24:11,029 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 101 [2018-10-13 14:24:11,754 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 115 [2018-10-13 14:24:12,407 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 108 [2018-10-13 14:24:13,055 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 103 [2018-10-13 14:24:13,703 WARN L178 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 104 [2018-10-13 14:24:14,580 WARN L178 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 112 [2018-10-13 14:24:15,616 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 110 [2018-10-13 14:24:16,597 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 112 [2018-10-13 14:24:17,399 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 111 [2018-10-13 14:24:18,053 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 106 [2018-10-13 14:24:18,969 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 109 [2018-10-13 14:24:19,865 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 105 [2018-10-13 14:24:20,582 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 106 [2018-10-13 14:24:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:24:22,800 INFO L93 Difference]: Finished difference Result 692 states and 2663 transitions. [2018-10-13 14:24:22,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-13 14:24:22,800 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 45 [2018-10-13 14:24:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:24:22,807 INFO L225 Difference]: With dead ends: 692 [2018-10-13 14:24:22,807 INFO L226 Difference]: Without dead ends: 692 [2018-10-13 14:24:22,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=1441, Invalid=3961, Unknown=0, NotChecked=0, Total=5402 [2018-10-13 14:24:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2018-10-13 14:24:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 161. [2018-10-13 14:24:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-13 14:24:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 760 transitions. [2018-10-13 14:24:22,815 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 760 transitions. Word has length 45 [2018-10-13 14:24:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:24:22,816 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 760 transitions. [2018-10-13 14:24:22,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-13 14:24:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 760 transitions. [2018-10-13 14:24:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:24:22,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:24:22,817 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] [2018-10-13 14:24:22,817 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:24:22,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:24:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1755327285, now seen corresponding path program 1 times [2018-10-13 14:24:22,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:24:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:24:23,158 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:24:23,488 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 35 [2018-10-13 14:24:23,739 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 37 [2018-10-13 14:24:24,105 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 42 [2018-10-13 14:24:24,243 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 39 [2018-10-13 14:24:24,388 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 41 [2018-10-13 14:24:24,639 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-13 14:24:24,882 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 63 [2018-10-13 14:24:25,127 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-13 14:24:25,365 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 57 [2018-10-13 14:24:25,615 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 54 [2018-10-13 14:24:25,855 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 51 [2018-10-13 14:24:26,091 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 48 [2018-10-13 14:24:26,323 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 45 [2018-10-13 14:24:26,602 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 42 [2018-10-13 14:24:26,865 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 39 [2018-10-13 14:24:27,072 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 37 [2018-10-13 14:24:27,258 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2018-10-13 14:24:27,426 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2018-10-13 14:24:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:24:27,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:24:27,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-13 14:24:27,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-13 14:24:27,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-13 14:24:27,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 14:24:27,828 INFO L87 Difference]: Start difference. First operand 161 states and 760 transitions. Second operand 36 states. [2018-10-13 14:24:28,834 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-13 14:24:29,333 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-13 14:24:29,528 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-13 14:24:29,746 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 14:24:29,944 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2018-10-13 14:24:30,162 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-10-13 14:24:30,330 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-10-13 14:24:30,526 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-10-13 14:24:30,682 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-13 14:24:30,842 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2018-10-13 14:24:31,048 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-13 14:24:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:24:33,272 INFO L93 Difference]: Finished difference Result 778 states and 2974 transitions. [2018-10-13 14:24:33,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-13 14:24:33,273 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 45 [2018-10-13 14:24:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:24:33,279 INFO L225 Difference]: With dead ends: 778 [2018-10-13 14:24:33,279 INFO L226 Difference]: Without dead ends: 778 [2018-10-13 14:24:33,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=793, Invalid=2399, Unknown=0, NotChecked=0, Total=3192 [2018-10-13 14:24:33,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2018-10-13 14:24:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 185. [2018-10-13 14:24:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-13 14:24:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 1024 transitions. [2018-10-13 14:24:33,289 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 1024 transitions. Word has length 45 [2018-10-13 14:24:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:24:33,290 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 1024 transitions. [2018-10-13 14:24:33,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-13 14:24:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 1024 transitions. [2018-10-13 14:24:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:24:33,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:24:33,291 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] [2018-10-13 14:24:33,291 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:24:33,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:24:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1755273469, now seen corresponding path program 1 times [2018-10-13 14:24:33,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:24:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:24:34,004 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-10-13 14:24:34,224 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2018-10-13 14:24:34,363 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2018-10-13 14:24:34,492 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2018-10-13 14:24:34,649 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-10-13 14:24:34,829 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2018-10-13 14:24:35,049 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 72 [2018-10-13 14:24:35,275 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2018-10-13 14:24:35,536 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2018-10-13 14:24:35,798 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2018-10-13 14:24:36,082 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2018-10-13 14:24:36,376 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 76 [2018-10-13 14:24:36,715 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 84 [2018-10-13 14:24:37,024 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 77 [2018-10-13 14:24:37,328 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 70 [2018-10-13 14:24:37,641 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 66 [2018-10-13 14:24:38,021 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 62 [2018-10-13 14:24:38,308 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 55 [2018-10-13 14:24:38,560 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 46 [2018-10-13 14:24:38,730 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2018-10-13 14:24:39,339 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2018-10-13 14:24:39,520 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-10-13 14:24:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:24:40,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:24:40,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2018-10-13 14:24:40,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:24:40,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:24:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:24:40,039 INFO L87 Difference]: Start difference. First operand 185 states and 1024 transitions. Second operand 42 states. [2018-10-13 14:24:41,047 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-13 14:24:41,340 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-13 14:24:41,675 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 63 [2018-10-13 14:24:42,175 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 66 [2018-10-13 14:24:43,111 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 89 [2018-10-13 14:24:43,548 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 78 [2018-10-13 14:24:44,052 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 86 [2018-10-13 14:24:44,477 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 76 [2018-10-13 14:24:44,971 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 85 [2018-10-13 14:24:45,394 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 76 [2018-10-13 14:24:45,888 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 84 [2018-10-13 14:24:46,311 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 75 [2018-10-13 14:24:46,811 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 83 [2018-10-13 14:24:47,224 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 75 [2018-10-13 14:24:47,725 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 82 [2018-10-13 14:24:48,137 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2018-10-13 14:24:48,622 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 82 [2018-10-13 14:24:49,029 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 71 [2018-10-13 14:24:49,443 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 69 [2018-10-13 14:24:49,936 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 80 [2018-10-13 14:24:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:24:53,356 INFO L93 Difference]: Finished difference Result 1260 states and 5728 transitions. [2018-10-13 14:24:53,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-13 14:24:53,356 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 45 [2018-10-13 14:24:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:24:53,366 INFO L225 Difference]: With dead ends: 1260 [2018-10-13 14:24:53,366 INFO L226 Difference]: Without dead ends: 1260 [2018-10-13 14:24:53,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=1165, Invalid=3527, Unknown=0, NotChecked=0, Total=4692 [2018-10-13 14:24:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2018-10-13 14:24:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 191. [2018-10-13 14:24:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-13 14:24:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 1090 transitions. [2018-10-13 14:24:53,380 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 1090 transitions. Word has length 45 [2018-10-13 14:24:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:24:53,380 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 1090 transitions. [2018-10-13 14:24:53,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:24:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 1090 transitions. [2018-10-13 14:24:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:24:53,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:24:53,381 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] [2018-10-13 14:24:53,382 INFO L424 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:24:53,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:24:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1755334973, now seen corresponding path program 1 times [2018-10-13 14:24:53,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:24:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:24:54,177 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2018-10-13 14:24:54,394 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-10-13 14:24:54,670 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2018-10-13 14:24:54,985 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2018-10-13 14:24:55,315 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2018-10-13 14:24:55,673 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 71 [2018-10-13 14:24:56,011 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 76 [2018-10-13 14:24:56,436 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 80 [2018-10-13 14:24:56,942 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 91 [2018-10-13 14:24:57,524 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 99 [2018-10-13 14:24:57,915 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 88 [2018-10-13 14:24:58,328 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 92 [2018-10-13 14:24:58,727 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 89 [2018-10-13 14:24:59,132 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 86 [2018-10-13 14:24:59,501 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 82 [2018-10-13 14:24:59,872 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 79 [2018-10-13 14:25:00,250 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2018-10-13 14:25:00,613 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 73 [2018-10-13 14:25:00,967 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2018-10-13 14:25:01,318 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2018-10-13 14:25:01,634 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2018-10-13 14:25:01,940 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2018-10-13 14:25:02,172 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-10-13 14:25:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:25:02,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:25:02,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:25:02,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:25:02,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:25:02,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:25:02,857 INFO L87 Difference]: Start difference. First operand 191 states and 1090 transitions. Second operand 40 states. [2018-10-13 14:25:03,966 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2018-10-13 14:25:04,215 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-13 14:25:04,492 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2018-10-13 14:25:04,956 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2018-10-13 14:25:05,449 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 80 [2018-10-13 14:25:06,359 WARN L178 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2018-10-13 14:25:06,920 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 87 [2018-10-13 14:25:07,495 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 84 [2018-10-13 14:25:08,134 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 82 [2018-10-13 14:25:08,660 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 82 [2018-10-13 14:25:08,991 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 85 [2018-10-13 14:25:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:25:11,814 INFO L93 Difference]: Finished difference Result 567 states and 2334 transitions. [2018-10-13 14:25:11,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 14:25:11,815 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 45 [2018-10-13 14:25:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:25:11,820 INFO L225 Difference]: With dead ends: 567 [2018-10-13 14:25:11,820 INFO L226 Difference]: Without dead ends: 567 [2018-10-13 14:25:11,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=799, Invalid=2623, Unknown=0, NotChecked=0, Total=3422 [2018-10-13 14:25:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-10-13 14:25:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 201. [2018-10-13 14:25:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-13 14:25:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 1202 transitions. [2018-10-13 14:25:11,828 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 1202 transitions. Word has length 45 [2018-10-13 14:25:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:25:11,828 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 1202 transitions. [2018-10-13 14:25:11,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:25:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 1202 transitions. [2018-10-13 14:25:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:25:11,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:25:11,829 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] [2018-10-13 14:25:11,830 INFO L424 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:25:11,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:25:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1755342661, now seen corresponding path program 1 times [2018-10-13 14:25:11,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:25:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:25:12,720 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2018-10-13 14:25:12,938 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2018-10-13 14:25:13,308 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2018-10-13 14:25:13,511 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 63 [2018-10-13 14:25:13,720 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-13 14:25:13,943 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2018-10-13 14:25:14,158 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-13 14:25:14,367 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 59 [2018-10-13 14:25:14,570 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2018-10-13 14:25:14,773 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2018-10-13 14:25:14,967 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2018-10-13 14:25:15,143 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2018-10-13 14:25:15,305 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2018-10-13 14:25:15,465 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2018-10-13 14:25:15,621 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2018-10-13 14:25:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:25:16,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:25:16,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:25:16,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:25:16,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:25:16,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:25:16,547 INFO L87 Difference]: Start difference. First operand 201 states and 1202 transitions. Second operand 40 states. [2018-10-13 14:25:17,597 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-13 14:25:17,732 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-10-13 14:25:18,293 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-13 14:25:18,486 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 14:25:18,676 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 14:25:18,891 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-13 14:25:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:25:19,988 INFO L93 Difference]: Finished difference Result 449 states and 1853 transitions. [2018-10-13 14:25:19,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 14:25:19,989 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 45 [2018-10-13 14:25:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:25:19,993 INFO L225 Difference]: With dead ends: 449 [2018-10-13 14:25:19,993 INFO L226 Difference]: Without dead ends: 449 [2018-10-13 14:25:19,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=709, Invalid=2371, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 14:25:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-10-13 14:25:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 213. [2018-10-13 14:25:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-13 14:25:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 1335 transitions. [2018-10-13 14:25:20,001 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 1335 transitions. Word has length 45 [2018-10-13 14:25:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:25:20,002 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 1335 transitions. [2018-10-13 14:25:20,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:25:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 1335 transitions. [2018-10-13 14:25:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 14:25:20,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:25:20,003 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] [2018-10-13 14:25:20,003 INFO L424 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:25:20,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:25:20,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1757763548, now seen corresponding path program 1 times [2018-10-13 14:25:20,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:25:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:25:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:25:21,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:25:21,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2018-10-13 14:25:21,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-13 14:25:21,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-13 14:25:21,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 14:25:21,633 INFO L87 Difference]: Start difference. First operand 213 states and 1335 transitions. Second operand 36 states. [2018-10-13 14:25:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:25:24,694 INFO L93 Difference]: Finished difference Result 527 states and 2374 transitions. [2018-10-13 14:25:24,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 14:25:24,695 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 45 [2018-10-13 14:25:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:25:24,700 INFO L225 Difference]: With dead ends: 527 [2018-10-13 14:25:24,700 INFO L226 Difference]: Without dead ends: 527 [2018-10-13 14:25:24,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=598, Invalid=1952, Unknown=0, NotChecked=0, Total=2550 [2018-10-13 14:25:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-10-13 14:25:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 243. [2018-10-13 14:25:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-13 14:25:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 1643 transitions. [2018-10-13 14:25:24,710 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 1643 transitions. Word has length 45 [2018-10-13 14:25:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:25:24,710 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 1643 transitions. [2018-10-13 14:25:24,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-13 14:25:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 1643 transitions. [2018-10-13 14:25:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:25:24,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:25:24,711 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:25:24,712 INFO L424 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:25:24,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:25:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1419745646, now seen corresponding path program 1 times [2018-10-13 14:25:24,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:25:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:25:25,414 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-13 14:25:25,647 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2018-10-13 14:25:25,970 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2018-10-13 14:25:26,362 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 89 [2018-10-13 14:25:26,932 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 96 [2018-10-13 14:25:27,530 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 108 [2018-10-13 14:25:29,153 WARN L178 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 222 DAG size of output: 122 [2018-10-13 14:25:29,875 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 91 [2018-10-13 14:25:30,675 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 97 [2018-10-13 14:25:31,389 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 103 [2018-10-13 14:25:32,152 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 107 [2018-10-13 14:25:33,096 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 108 [2018-10-13 14:25:34,111 WARN L178 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 115 [2018-10-13 14:25:35,115 WARN L178 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 112 [2018-10-13 14:25:36,105 WARN L178 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 109 [2018-10-13 14:25:37,096 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 106 [2018-10-13 14:25:38,119 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 97 [2018-10-13 14:25:39,072 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 89 [2018-10-13 14:25:39,916 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 77 [2018-10-13 14:25:40,756 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 76 [2018-10-13 14:25:41,369 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 64 [2018-10-13 14:25:41,899 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 48 [2018-10-13 14:25:42,420 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 48 [2018-10-13 14:25:42,921 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2018-10-13 14:25:43,443 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 58 [2018-10-13 14:25:43,912 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 56 [2018-10-13 14:25:44,304 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 47 [2018-10-13 14:25:44,751 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 42 [2018-10-13 14:25:45,095 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 33 [2018-10-13 14:25:45,326 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2018-10-13 14:25:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:25:45,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:25:45,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-13 14:25:45,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-13 14:25:45,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-13 14:25:45,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1781, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 14:25:45,958 INFO L87 Difference]: Start difference. First operand 243 states and 1643 transitions. Second operand 44 states. [2018-10-13 14:25:46,876 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-10-13 14:25:47,127 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-13 14:25:47,408 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2018-10-13 14:25:47,761 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2018-10-13 14:25:48,278 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 85 [2018-10-13 14:25:48,741 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 92 [2018-10-13 14:25:49,312 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 107 [2018-10-13 14:25:49,937 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 109 [2018-10-13 14:25:50,817 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 117 [2018-10-13 14:25:51,760 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 126 [2018-10-13 14:25:52,763 WARN L178 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 129 [2018-10-13 14:25:53,806 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 132 [2018-10-13 14:25:55,732 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 260 DAG size of output: 140 [2018-10-13 14:25:56,929 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 299 DAG size of output: 141 [2018-10-13 14:25:58,069 WARN L178 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 138 [2018-10-13 14:25:59,237 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 306 DAG size of output: 148 [2018-10-13 14:26:00,417 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 271 DAG size of output: 139 [2018-10-13 14:26:01,918 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 316 DAG size of output: 149 [2018-10-13 14:26:03,066 WARN L178 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 137 [2018-10-13 14:26:04,294 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 318 DAG size of output: 142 [2018-10-13 14:26:05,358 WARN L178 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 135 [2018-10-13 14:26:06,552 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 277 DAG size of output: 139 [2018-10-13 14:26:07,759 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 319 DAG size of output: 145 [2018-10-13 14:26:08,967 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 139 [2018-10-13 14:26:10,075 WARN L178 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 135 [2018-10-13 14:26:11,281 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 137 [2018-10-13 14:26:12,433 WARN L178 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 137 [2018-10-13 14:26:13,545 WARN L178 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 134 [2018-10-13 14:26:14,735 WARN L178 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 138 [2018-10-13 14:26:15,925 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 268 DAG size of output: 140 [2018-10-13 14:26:17,150 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 308 DAG size of output: 150 [2018-10-13 14:26:18,338 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 277 DAG size of output: 139 [2018-10-13 14:26:19,544 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 320 DAG size of output: 146 [2018-10-13 14:26:20,764 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 291 DAG size of output: 141 [2018-10-13 14:26:21,910 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 137 [2018-10-13 14:26:23,070 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 327 DAG size of output: 136 [2018-10-13 14:26:24,249 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 296 DAG size of output: 140 [2018-10-13 14:26:25,457 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 261 DAG size of output: 141 [2018-10-13 14:26:26,577 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 138 [2018-10-13 14:26:28,335 WARN L178 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 138 [2018-10-13 14:26:29,512 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 272 DAG size of output: 140 [2018-10-13 14:26:30,766 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 298 DAG size of output: 140 [2018-10-13 14:26:31,964 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 278 DAG size of output: 140 [2018-10-13 14:26:33,241 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 293 DAG size of output: 138 [2018-10-13 14:26:35,073 WARN L178 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 137 [2018-10-13 14:26:36,220 WARN L178 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 137 [2018-10-13 14:26:37,390 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 135 [2018-10-13 14:26:38,978 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 314 DAG size of output: 147 [2018-10-13 14:26:40,533 WARN L178 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 134 [2018-10-13 14:26:42,188 WARN L178 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 143 [2018-10-13 14:26:43,511 WARN L178 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 135 [2018-10-13 14:26:47,131 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 269 DAG size of output: 141 [2018-10-13 14:26:48,910 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 278 DAG size of output: 140 [2018-10-13 14:26:50,612 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 292 DAG size of output: 142 [2018-10-13 14:26:51,817 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 128 [2018-10-13 14:26:53,319 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 297 DAG size of output: 141 [2018-10-13 14:26:54,550 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 309 DAG size of output: 151 [2018-10-13 14:26:56,076 WARN L178 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 317 DAG size of output: 150 [2018-10-13 14:26:57,288 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 320 DAG size of output: 146 [2018-10-13 14:26:58,518 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 322 DAG size of output: 138 [2018-10-13 14:26:59,681 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 323 DAG size of output: 138 [2018-10-13 14:27:00,867 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 328 DAG size of output: 134 [2018-10-13 14:27:02,684 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 321 DAG size of output: 147 [2018-10-13 14:27:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:27:03,542 INFO L93 Difference]: Finished difference Result 1871 states and 10889 transitions. [2018-10-13 14:27:03,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-13 14:27:03,542 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 46 [2018-10-13 14:27:03,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:27:03,559 INFO L225 Difference]: With dead ends: 1871 [2018-10-13 14:27:03,560 INFO L226 Difference]: Without dead ends: 1871 [2018-10-13 14:27:03,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 86.9s TimeCoverageRelationStatistics Valid=3986, Invalid=8446, Unknown=0, NotChecked=0, Total=12432 [2018-10-13 14:27:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2018-10-13 14:27:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 261. [2018-10-13 14:27:03,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-13 14:27:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 1841 transitions. [2018-10-13 14:27:03,580 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 1841 transitions. Word has length 46 [2018-10-13 14:27:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:27:03,581 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 1841 transitions. [2018-10-13 14:27:03,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-13 14:27:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 1841 transitions. [2018-10-13 14:27:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:27:03,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:27:03,582 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:27:03,582 INFO L424 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:27:03,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:27:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1419745398, now seen corresponding path program 1 times [2018-10-13 14:27:03,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:27:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:27:04,445 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-13 14:27:04,633 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2018-10-13 14:27:04,909 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2018-10-13 14:27:05,366 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 93 [2018-10-13 14:27:05,985 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 114 [2018-10-13 14:27:06,776 WARN L178 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 130 [2018-10-13 14:27:07,036 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 53 [2018-10-13 14:27:07,283 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 52 [2018-10-13 14:27:07,552 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 54 [2018-10-13 14:27:07,874 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 73 [2018-10-13 14:27:08,187 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-13 14:27:08,502 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 67 [2018-10-13 14:27:08,811 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 63 [2018-10-13 14:27:09,128 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 60 [2018-10-13 14:27:09,430 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 58 [2018-10-13 14:27:09,741 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 56 [2018-10-13 14:27:10,067 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 54 [2018-10-13 14:27:10,373 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 52 [2018-10-13 14:27:10,630 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 47 [2018-10-13 14:27:10,877 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 45 [2018-10-13 14:27:11,114 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 41 [2018-10-13 14:27:11,449 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 41 [2018-10-13 14:27:11,734 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 37 [2018-10-13 14:27:11,915 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 30 [2018-10-13 14:27:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:27:12,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:27:12,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:27:12,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:27:12,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:27:12,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1669, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:27:12,479 INFO L87 Difference]: Start difference. First operand 261 states and 1841 transitions. Second operand 43 states. [2018-10-13 14:27:13,484 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2018-10-13 14:27:13,743 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2018-10-13 14:27:14,105 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 71 [2018-10-13 14:27:14,542 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 74 [2018-10-13 14:27:14,976 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 77 [2018-10-13 14:27:15,447 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 81 [2018-10-13 14:27:15,964 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 85 [2018-10-13 14:27:17,062 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 91 [2018-10-13 14:27:17,629 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 90 [2018-10-13 14:27:18,232 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 91 [2018-10-13 14:27:18,801 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 90 [2018-10-13 14:27:19,288 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 84 [2018-10-13 14:27:19,868 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 92 [2018-10-13 14:27:20,401 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 90 [2018-10-13 14:27:21,081 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 92 [2018-10-13 14:27:21,624 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 90 [2018-10-13 14:27:22,153 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 88 [2018-10-13 14:27:22,727 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 90 [2018-10-13 14:27:23,266 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 91 [2018-10-13 14:27:23,795 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 92 [2018-10-13 14:27:24,341 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 89 [2018-10-13 14:27:24,877 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 91 [2018-10-13 14:27:25,509 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 90 [2018-10-13 14:27:26,725 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 91 [2018-10-13 14:27:27,423 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 91 [2018-10-13 14:27:28,077 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 90 [2018-10-13 14:27:29,426 WARN L178 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 89 [2018-10-13 14:27:30,058 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 89 [2018-10-13 14:27:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:27:32,601 INFO L93 Difference]: Finished difference Result 1155 states and 7364 transitions. [2018-10-13 14:27:32,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-13 14:27:32,601 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 46 [2018-10-13 14:27:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:27:32,612 INFO L225 Difference]: With dead ends: 1155 [2018-10-13 14:27:32,612 INFO L226 Difference]: Without dead ends: 1155 [2018-10-13 14:27:32,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=1661, Invalid=4345, Unknown=0, NotChecked=0, Total=6006 [2018-10-13 14:27:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2018-10-13 14:27:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 297. [2018-10-13 14:27:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-10-13 14:27:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 2237 transitions. [2018-10-13 14:27:32,627 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 2237 transitions. Word has length 46 [2018-10-13 14:27:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:27:32,627 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 2237 transitions. [2018-10-13 14:27:32,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:27:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 2237 transitions. [2018-10-13 14:27:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:27:32,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:27:32,629 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:27:32,629 INFO L424 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:27:32,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:27:32,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1419745212, now seen corresponding path program 1 times [2018-10-13 14:27:32,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:27:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:27:33,494 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-13 14:27:33,739 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2018-10-13 14:27:34,002 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2018-10-13 14:27:34,339 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 94 [2018-10-13 14:27:34,874 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 104 [2018-10-13 14:27:35,564 WARN L178 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 121 [2018-10-13 14:27:36,682 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 236 DAG size of output: 146 [2018-10-13 14:27:38,023 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 266 DAG size of output: 156 [2018-10-13 14:27:40,023 WARN L178 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 303 DAG size of output: 177 [2018-10-13 14:27:40,879 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 89 [2018-10-13 14:27:41,876 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 105 [2018-10-13 14:27:42,898 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 102 [2018-10-13 14:27:43,922 WARN L178 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 99 [2018-10-13 14:27:44,942 WARN L178 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 96 [2018-10-13 14:27:45,946 WARN L178 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 93 [2018-10-13 14:27:47,016 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 90 [2018-10-13 14:27:47,977 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 89 [2018-10-13 14:27:48,941 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 86 [2018-10-13 14:27:49,876 WARN L178 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 84 [2018-10-13 14:27:50,770 WARN L178 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 85 [2018-10-13 14:27:51,638 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 78 [2018-10-13 14:27:52,264 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 61 [2018-10-13 14:27:52,929 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 66 [2018-10-13 14:27:53,388 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 52 [2018-10-13 14:27:53,976 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 56 [2018-10-13 14:27:54,294 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 34 [2018-10-13 14:27:54,594 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 31 [2018-10-13 14:27:54,890 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2018-10-13 14:27:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:27:55,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:27:55,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-13 14:27:55,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-13 14:27:55,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-13 14:27:55,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 14:27:55,500 INFO L87 Difference]: Start difference. First operand 297 states and 2237 transitions. Second operand 44 states. [2018-10-13 14:27:56,495 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-10-13 14:27:56,760 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2018-10-13 14:27:57,080 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2018-10-13 14:27:57,482 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2018-10-13 14:27:57,987 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 84 [2018-10-13 14:27:58,601 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 98 [2018-10-13 14:27:59,265 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 102 [2018-10-13 14:28:00,058 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 108 [2018-10-13 14:28:01,078 WARN L178 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 112 [2018-10-13 14:28:02,127 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 115 [2018-10-13 14:28:04,023 WARN L178 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 135 [2018-10-13 14:28:05,334 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 348 DAG size of output: 125 [2018-10-13 14:28:06,706 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 358 DAG size of output: 123 [2018-10-13 14:28:08,017 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 376 DAG size of output: 127 [2018-10-13 14:28:09,131 WARN L178 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 120 [2018-10-13 14:28:10,206 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 130 [2018-10-13 14:28:11,419 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 382 DAG size of output: 126 [2018-10-13 14:28:12,654 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 303 DAG size of output: 123 [2018-10-13 14:28:13,836 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 386 DAG size of output: 125 [2018-10-13 14:28:15,137 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 326 DAG size of output: 126 [2018-10-13 14:28:16,312 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 393 DAG size of output: 121 [2018-10-13 14:28:17,428 WARN L178 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 392 DAG size of output: 116 [2018-10-13 14:28:18,666 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 338 DAG size of output: 123 [2018-10-13 14:28:19,988 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 350 DAG size of output: 127 [2018-10-13 14:28:21,321 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 378 DAG size of output: 129 [2018-10-13 14:28:22,575 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 305 DAG size of output: 125 [2018-10-13 14:28:23,791 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 388 DAG size of output: 127 [2018-10-13 14:28:24,921 WARN L178 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 118 [2018-10-13 14:28:26,153 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 340 DAG size of output: 125 [2018-10-13 14:28:27,366 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 130 [2018-10-13 14:28:28,686 WARN L178 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 133 [2018-10-13 14:28:30,206 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 329 DAG size of output: 129 [2018-10-13 14:28:31,380 WARN L178 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 132 [2018-10-13 14:28:32,842 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 128 [2018-10-13 14:28:34,236 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 324 DAG size of output: 124 [2018-10-13 14:28:35,690 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 356 DAG size of output: 121 [2018-10-13 14:28:37,545 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 117 [2018-10-13 14:28:39,443 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 380 DAG size of output: 124 [2018-10-13 14:28:41,411 WARN L178 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 119 [2018-10-13 14:28:45,152 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 308 DAG size of output: 128 [2018-10-13 14:28:46,343 WARN L178 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 396 DAG size of output: 114 [2018-10-13 14:28:47,821 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 343 DAG size of output: 128 [2018-10-13 14:28:49,169 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 353 DAG size of output: 130 [2018-10-13 14:28:50,539 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 361 DAG size of output: 126 [2018-10-13 14:28:51,906 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 381 DAG size of output: 129 [2018-10-13 14:28:53,198 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 385 DAG size of output: 126 [2018-10-13 14:28:54,460 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 391 DAG size of output: 127 [2018-10-13 14:28:55,695 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 396 DAG size of output: 124 [2018-10-13 14:28:57,853 WARN L178 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 397 DAG size of output: 119 [2018-10-13 14:28:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:28:57,895 INFO L93 Difference]: Finished difference Result 1557 states and 9522 transitions. [2018-10-13 14:28:57,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-13 14:28:57,896 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 46 [2018-10-13 14:28:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:28:57,904 INFO L225 Difference]: With dead ends: 1557 [2018-10-13 14:28:57,904 INFO L226 Difference]: Without dead ends: 1557 [2018-10-13 14:28:57,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=2961, Invalid=6545, Unknown=0, NotChecked=0, Total=9506 [2018-10-13 14:28:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2018-10-13 14:28:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 351. [2018-10-13 14:28:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-13 14:28:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 2831 transitions. [2018-10-13 14:28:57,924 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 2831 transitions. Word has length 46 [2018-10-13 14:28:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:28:57,925 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 2831 transitions. [2018-10-13 14:28:57,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-13 14:28:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 2831 transitions. [2018-10-13 14:28:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:28:57,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:28:57,926 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:28:57,926 INFO L424 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:28:57,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:28:57,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1419626482, now seen corresponding path program 1 times [2018-10-13 14:28:57,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:28:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:28:58,895 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2018-10-13 14:28:59,042 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 48 [2018-10-13 14:28:59,390 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 59 [2018-10-13 14:28:59,792 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 71 [2018-10-13 14:29:00,427 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 89 [2018-10-13 14:29:01,183 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 101 [2018-10-13 14:29:01,497 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 52 [2018-10-13 14:29:01,858 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 62 [2018-10-13 14:29:02,230 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 61 [2018-10-13 14:29:02,701 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 65 [2018-10-13 14:29:03,194 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 64 [2018-10-13 14:29:03,812 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 85 [2018-10-13 14:29:04,430 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 82 [2018-10-13 14:29:05,061 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 79 [2018-10-13 14:29:05,615 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 76 [2018-10-13 14:29:06,146 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 71 [2018-10-13 14:29:06,688 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 70 [2018-10-13 14:29:07,247 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 68 [2018-10-13 14:29:07,761 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 65 [2018-10-13 14:29:08,236 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 62 [2018-10-13 14:29:08,656 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 59 [2018-10-13 14:29:09,082 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 55 [2018-10-13 14:29:09,374 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 38 [2018-10-13 14:29:09,652 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 34 [2018-10-13 14:29:09,987 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 32 [2018-10-13 14:29:10,265 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 26 [2018-10-13 14:29:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:29:10,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:29:10,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:29:10,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:29:10,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:29:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:29:10,746 INFO L87 Difference]: Start difference. First operand 351 states and 2831 transitions. Second operand 42 states. [2018-10-13 14:29:11,728 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-13 14:29:11,996 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2018-10-13 14:29:12,305 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-13 14:29:12,655 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2018-10-13 14:29:13,039 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-13 14:29:13,442 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 77 [2018-10-13 14:29:13,871 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 81 [2018-10-13 14:29:14,332 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 89 [2018-10-13 14:29:14,835 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 92 [2018-10-13 14:29:15,282 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 94 [2018-10-13 14:29:16,342 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 101 [2018-10-13 14:29:16,939 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2018-10-13 14:29:17,623 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 106 [2018-10-13 14:29:18,117 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 99 [2018-10-13 14:29:18,673 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 98 [2018-10-13 14:29:19,283 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 106 [2018-10-13 14:29:19,785 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 97 [2018-10-13 14:29:20,285 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 96 [2018-10-13 14:29:20,904 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 103 [2018-10-13 14:29:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:29:24,444 INFO L93 Difference]: Finished difference Result 1316 states and 9173 transitions. [2018-10-13 14:29:24,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-13 14:29:24,448 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2018-10-13 14:29:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:29:24,463 INFO L225 Difference]: With dead ends: 1316 [2018-10-13 14:29:24,463 INFO L226 Difference]: Without dead ends: 1316 [2018-10-13 14:29:24,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=1000, Invalid=3422, Unknown=0, NotChecked=0, Total=4422 [2018-10-13 14:29:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2018-10-13 14:29:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 391. [2018-10-13 14:29:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-13 14:29:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 3271 transitions. [2018-10-13 14:29:24,482 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 3271 transitions. Word has length 46 [2018-10-13 14:29:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:29:24,482 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 3271 transitions. [2018-10-13 14:29:24,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:29:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 3271 transitions. [2018-10-13 14:29:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:29:24,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:29:24,484 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:29:24,484 INFO L424 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:29:24,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:29:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1419628342, now seen corresponding path program 1 times [2018-10-13 14:29:24,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:29:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:29:25,327 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-13 14:29:25,478 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-13 14:29:25,717 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2018-10-13 14:29:25,963 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-13 14:29:26,335 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 86 [2018-10-13 14:29:26,774 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 93 [2018-10-13 14:29:27,164 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 87 [2018-10-13 14:29:27,619 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 97 [2018-10-13 14:29:28,196 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 105 [2018-10-13 14:29:28,935 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 104 [2018-10-13 14:29:29,692 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 108 [2018-10-13 14:29:30,562 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 113 [2018-10-13 14:29:31,426 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 110 [2018-10-13 14:29:32,255 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 107 [2018-10-13 14:29:33,057 WARN L178 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 103 [2018-10-13 14:29:33,880 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 92 [2018-10-13 14:29:34,519 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 79 [2018-10-13 14:29:35,342 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 77 [2018-10-13 14:29:36,061 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 75 [2018-10-13 14:29:36,701 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 66 [2018-10-13 14:29:37,291 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 64 [2018-10-13 14:29:37,946 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 62 [2018-10-13 14:29:38,534 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 59 [2018-10-13 14:29:39,024 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 43 [2018-10-13 14:29:39,576 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 44 [2018-10-13 14:29:40,102 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 39 [2018-10-13 14:29:40,507 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 33 [2018-10-13 14:29:40,818 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 26 [2018-10-13 14:29:41,062 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 19 [2018-10-13 14:29:41,290 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 8 [2018-10-13 14:29:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:29:41,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:29:41,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-13 14:29:41,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-13 14:29:41,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-13 14:29:41,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1779, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 14:29:41,572 INFO L87 Difference]: Start difference. First operand 391 states and 3271 transitions. Second operand 44 states. [2018-10-13 14:29:42,544 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2018-10-13 14:29:42,848 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-13 14:29:43,135 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2018-10-13 14:29:43,470 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2018-10-13 14:29:43,875 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 74 [2018-10-13 14:29:44,309 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 80 [2018-10-13 14:29:44,809 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 83 [2018-10-13 14:29:45,395 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 94 [2018-10-13 14:29:46,081 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 97 [2018-10-13 14:29:47,490 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 118 [2018-10-13 14:29:48,231 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 108 [2018-10-13 14:29:49,042 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 118 [2018-10-13 14:29:49,775 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 106 [2018-10-13 14:29:50,577 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 116 [2018-10-13 14:29:51,304 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 105 [2018-10-13 14:29:52,097 WARN L178 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 116 [2018-10-13 14:29:52,802 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 106 [2018-10-13 14:29:53,411 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 97 [2018-10-13 14:29:54,176 WARN L178 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 114 [2018-10-13 14:29:54,891 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 104 [2018-10-13 14:29:55,710 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 114 [2018-10-13 14:29:56,473 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 104 [2018-10-13 14:29:57,313 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 112 [2018-10-13 14:29:58,032 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 102 [2018-10-13 14:29:58,744 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 102 [2018-10-13 14:29:59,559 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 111 [2018-10-13 14:30:00,374 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 117 [2018-10-13 14:30:01,083 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 105 [2018-10-13 14:30:01,855 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 115 [2018-10-13 14:30:02,550 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 105 [2018-10-13 14:30:03,334 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 113 [2018-10-13 14:30:04,033 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 103 [2018-10-13 14:30:04,734 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 101 [2018-10-13 14:30:05,484 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 110 [2018-10-13 14:30:06,317 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 119 [2018-10-13 14:30:07,500 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 109 [2018-10-13 14:30:08,508 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 116 [2018-10-13 14:30:09,605 WARN L178 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 104 [2018-10-13 14:30:10,395 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 117 [2018-10-13 14:30:11,151 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 114 [2018-10-13 14:30:11,912 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 115 [2018-10-13 14:30:12,694 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 112 [2018-10-13 14:30:13,494 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 113 [2018-10-13 14:30:14,285 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 109 [2018-10-13 14:30:15,073 WARN L178 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 106 [2018-10-13 14:30:15,921 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 104 [2018-10-13 14:30:16,641 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 98 [2018-10-13 14:30:17,802 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 105 [2018-10-13 14:30:18,595 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 102 [2018-10-13 14:30:19,380 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 103 [2018-10-13 14:30:20,098 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 100 [2018-10-13 14:30:21,180 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 117 [2018-10-13 14:30:22,243 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 107 [2018-10-13 14:30:23,475 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 115 [2018-10-13 14:30:24,241 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 113 [2018-10-13 14:30:25,046 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 111 [2018-10-13 14:30:26,094 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 104 [2018-10-13 14:30:27,244 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 103 [2018-10-13 14:30:28,004 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 101 [2018-10-13 14:30:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:30:30,977 INFO L93 Difference]: Finished difference Result 3193 states and 27834 transitions. [2018-10-13 14:30:30,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-13 14:30:30,977 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 46 [2018-10-13 14:30:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:30:30,997 INFO L225 Difference]: With dead ends: 3193 [2018-10-13 14:30:30,997 INFO L226 Difference]: Without dead ends: 3193 [2018-10-13 14:30:30,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=3724, Invalid=8048, Unknown=0, NotChecked=0, Total=11772 [2018-10-13 14:30:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2018-10-13 14:30:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 609. [2018-10-13 14:30:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2018-10-13 14:30:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 5676 transitions. [2018-10-13 14:30:31,070 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 5676 transitions. Word has length 46 [2018-10-13 14:30:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:30:31,071 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 5676 transitions. [2018-10-13 14:30:31,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-13 14:30:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 5676 transitions. [2018-10-13 14:30:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:30:31,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:30:31,072 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:30:31,075 INFO L424 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:30:31,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:30:31,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1419626358, now seen corresponding path program 1 times [2018-10-13 14:30:31,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:30:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:30:31,723 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-13 14:30:31,897 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-13 14:30:32,103 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-13 14:30:32,264 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2018-10-13 14:30:32,552 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 39 [2018-10-13 14:30:32,769 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 46 [2018-10-13 14:30:33,030 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 53 [2018-10-13 14:30:33,257 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 51 [2018-10-13 14:30:33,501 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 53 [2018-10-13 14:30:33,834 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 75 [2018-10-13 14:30:34,161 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 72 [2018-10-13 14:30:34,473 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 70 [2018-10-13 14:30:34,793 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 66 [2018-10-13 14:30:35,107 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 64 [2018-10-13 14:30:35,427 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 62 [2018-10-13 14:30:35,805 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 60 [2018-10-13 14:30:36,140 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 58 [2018-10-13 14:30:36,533 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 56 [2018-10-13 14:30:36,911 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 52 [2018-10-13 14:30:37,272 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 48 [2018-10-13 14:30:37,540 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 36 [2018-10-13 14:30:37,779 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 31 [2018-10-13 14:30:38,388 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 25 [2018-10-13 14:30:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:30:38,907 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:30:38,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:30:38,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:30:38,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:30:38,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:30:38,908 INFO L87 Difference]: Start difference. First operand 609 states and 5676 transitions. Second operand 43 states. [2018-10-13 14:30:40,211 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2018-10-13 14:30:40,438 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 61 [2018-10-13 14:30:40,717 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2018-10-13 14:30:41,009 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2018-10-13 14:30:41,384 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 76 [2018-10-13 14:30:41,758 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 79 [2018-10-13 14:30:42,827 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 89 [2018-10-13 14:30:43,403 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 88 [2018-10-13 14:30:43,928 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 86 [2018-10-13 14:30:44,380 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 79 [2018-10-13 14:30:44,923 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 94 [2018-10-13 14:30:45,440 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 82 [2018-10-13 14:30:46,029 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 93 [2018-10-13 14:30:46,476 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2018-10-13 14:30:47,142 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 93 [2018-10-13 14:30:47,542 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 83 [2018-10-13 14:30:47,929 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2018-10-13 14:30:48,394 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 94 [2018-10-13 14:30:48,880 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 87 [2018-10-13 14:30:49,396 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 94 [2018-10-13 14:30:49,772 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 84 [2018-10-13 14:30:50,167 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 83 [2018-10-13 14:30:50,574 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 95 [2018-10-13 14:30:51,249 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 88 [2018-10-13 14:30:52,030 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 87 [2018-10-13 14:30:52,785 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 93 [2018-10-13 14:30:53,507 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 92 [2018-10-13 14:30:54,789 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2018-10-13 14:30:55,261 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 85 [2018-10-13 14:30:56,284 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2018-10-13 14:30:58,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:30:58,697 INFO L93 Difference]: Finished difference Result 2126 states and 17391 transitions. [2018-10-13 14:30:58,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-13 14:30:58,697 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 46 [2018-10-13 14:30:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:30:58,709 INFO L225 Difference]: With dead ends: 2126 [2018-10-13 14:30:58,709 INFO L226 Difference]: Without dead ends: 2126 [2018-10-13 14:30:58,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=1872, Invalid=4770, Unknown=0, NotChecked=0, Total=6642 [2018-10-13 14:30:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2018-10-13 14:30:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 663. [2018-10-13 14:30:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2018-10-13 14:30:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 6270 transitions. [2018-10-13 14:30:58,755 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 6270 transitions. Word has length 46 [2018-10-13 14:30:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:30:58,755 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 6270 transitions. [2018-10-13 14:30:58,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:30:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 6270 transitions. [2018-10-13 14:30:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:30:58,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:30:58,757 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:30:58,758 INFO L424 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:30:58,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:30:58,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1419626234, now seen corresponding path program 1 times [2018-10-13 14:30:58,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:30:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:30:59,629 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2018-10-13 14:30:59,856 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2018-10-13 14:31:00,096 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-13 14:31:00,295 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2018-10-13 14:31:00,641 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-10-13 14:31:01,054 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 95 [2018-10-13 14:31:01,584 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 107 [2018-10-13 14:31:02,244 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 118 [2018-10-13 14:31:02,941 WARN L178 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 127 [2018-10-13 14:31:03,752 WARN L178 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 137 [2018-10-13 14:31:04,514 WARN L178 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 134 [2018-10-13 14:31:05,333 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 141 [2018-10-13 14:31:06,163 WARN L178 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 138 [2018-10-13 14:31:06,978 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 135 [2018-10-13 14:31:07,802 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 132 [2018-10-13 14:31:08,685 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 129 [2018-10-13 14:31:09,419 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 83 [2018-10-13 14:31:10,141 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 80 [2018-10-13 14:31:10,867 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 80 [2018-10-13 14:31:11,611 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 74 [2018-10-13 14:31:12,324 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 71 [2018-10-13 14:31:12,749 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 61 [2018-10-13 14:31:13,218 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 60 [2018-10-13 14:31:13,530 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 46 [2018-10-13 14:31:13,947 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 43 [2018-10-13 14:31:14,150 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2018-10-13 14:31:14,355 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2018-10-13 14:31:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:31:14,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:31:14,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:31:14,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:31:14,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:31:14,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1571, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:31:14,841 INFO L87 Difference]: Start difference. First operand 663 states and 6270 transitions. Second operand 42 states. [2018-10-13 14:31:16,027 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-13 14:31:16,288 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-13 14:31:16,597 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2018-10-13 14:31:17,041 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2018-10-13 14:31:17,429 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 86 [2018-10-13 14:31:18,085 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 101 [2018-10-13 14:31:18,930 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 115 [2018-10-13 14:31:19,892 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 124 [2018-10-13 14:31:20,670 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 128 [2018-10-13 14:31:22,204 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 139 [2018-10-13 14:31:23,146 WARN L178 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 144 [2018-10-13 14:31:24,038 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 147 [2018-10-13 14:31:25,202 WARN L178 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 140 [2018-10-13 14:31:26,128 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 133 [2018-10-13 14:31:26,924 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 132 [2018-10-13 14:31:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:31:30,521 INFO L93 Difference]: Finished difference Result 1835 states and 16188 transitions. [2018-10-13 14:31:30,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 14:31:30,522 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2018-10-13 14:31:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:31:30,531 INFO L225 Difference]: With dead ends: 1835 [2018-10-13 14:31:30,531 INFO L226 Difference]: Without dead ends: 1835 [2018-10-13 14:31:30,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2018-10-13 14:31:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2018-10-13 14:31:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 959. [2018-10-13 14:31:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2018-10-13 14:31:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 9526 transitions. [2018-10-13 14:31:30,578 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 9526 transitions. Word has length 46 [2018-10-13 14:31:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:31:30,578 INFO L481 AbstractCegarLoop]: Abstraction has 959 states and 9526 transitions. [2018-10-13 14:31:30,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:31:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 9526 transitions. [2018-10-13 14:31:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:31:30,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:31:30,580 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:31:30,581 INFO L424 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:31:30,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:31:30,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1419626048, now seen corresponding path program 1 times [2018-10-13 14:31:30,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:31:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:31:31,568 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2018-10-13 14:31:31,755 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2018-10-13 14:31:32,032 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2018-10-13 14:31:32,490 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 80 [2018-10-13 14:31:32,998 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 90 [2018-10-13 14:31:33,516 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 99 [2018-10-13 14:31:34,046 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2018-10-13 14:31:34,515 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 89 [2018-10-13 14:31:34,985 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 86 [2018-10-13 14:31:35,457 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 83 [2018-10-13 14:31:35,920 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2018-10-13 14:31:36,380 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2018-10-13 14:31:36,845 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 74 [2018-10-13 14:31:37,306 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 71 [2018-10-13 14:31:37,758 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 68 [2018-10-13 14:31:38,259 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 65 [2018-10-13 14:31:38,694 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 62 [2018-10-13 14:31:39,155 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 59 [2018-10-13 14:31:39,499 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 55 [2018-10-13 14:31:39,860 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 48 [2018-10-13 14:31:40,187 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2018-10-13 14:31:40,375 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2018-10-13 14:31:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:31:40,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:31:40,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:31:40,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:31:40,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:31:40,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1524, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:31:40,811 INFO L87 Difference]: Start difference. First operand 959 states and 9526 transitions. Second operand 42 states. [2018-10-13 14:31:42,005 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2018-10-13 14:31:42,272 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2018-10-13 14:31:42,584 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2018-10-13 14:31:43,007 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2018-10-13 14:31:43,458 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2018-10-13 14:31:43,861 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 87 [2018-10-13 14:31:44,800 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 97 [2018-10-13 14:31:45,398 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 97 [2018-10-13 14:31:45,942 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 89 [2018-10-13 14:31:46,451 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 88 [2018-10-13 14:31:46,950 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 89 [2018-10-13 14:31:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:31:49,847 INFO L93 Difference]: Finished difference Result 1418 states and 12058 transitions. [2018-10-13 14:31:49,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 14:31:49,847 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2018-10-13 14:31:49,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:31:49,853 INFO L225 Difference]: With dead ends: 1418 [2018-10-13 14:31:49,853 INFO L226 Difference]: Without dead ends: 1418 [2018-10-13 14:31:49,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=793, Invalid=2867, Unknown=0, NotChecked=0, Total=3660 [2018-10-13 14:31:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2018-10-13 14:31:49,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1023. [2018-10-13 14:31:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-13 14:31:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 10230 transitions. [2018-10-13 14:31:49,892 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 10230 transitions. Word has length 46 [2018-10-13 14:31:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:31:49,892 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 10230 transitions. [2018-10-13 14:31:49,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:31:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 10230 transitions. [2018-10-13 14:31:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:31:49,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:31:49,894 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:31:49,894 INFO L424 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:31:49,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:31:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1419507318, now seen corresponding path program 1 times [2018-10-13 14:31:49,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:31:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:31:50,747 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-10-13 14:31:50,972 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-13 14:31:51,225 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2018-10-13 14:31:51,520 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2018-10-13 14:31:51,655 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 42 [2018-10-13 14:31:51,805 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 49 [2018-10-13 14:31:51,969 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 51 [2018-10-13 14:31:52,134 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 51 [2018-10-13 14:31:52,324 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 53 [2018-10-13 14:31:52,597 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 74 [2018-10-13 14:31:52,841 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 71 [2018-10-13 14:31:53,087 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2018-10-13 14:31:53,324 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 65 [2018-10-13 14:31:53,559 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 62 [2018-10-13 14:31:53,810 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 59 [2018-10-13 14:31:54,088 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 57 [2018-10-13 14:31:54,324 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 55 [2018-10-13 14:31:54,527 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2018-10-13 14:31:54,724 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2018-10-13 14:31:54,931 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 43 [2018-10-13 14:31:55,096 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2018-10-13 14:31:55,445 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2018-10-13 14:31:55,674 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2018-10-13 14:31:55,888 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2018-10-13 14:31:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:31:56,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:31:56,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:31:56,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:31:56,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:31:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:31:56,314 INFO L87 Difference]: Start difference. First operand 1023 states and 10230 transitions. Second operand 43 states. [2018-10-13 14:31:57,309 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2018-10-13 14:31:57,594 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 53 [2018-10-13 14:31:57,829 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2018-10-13 14:31:58,096 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2018-10-13 14:31:58,431 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2018-10-13 14:31:58,822 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 72 [2018-10-13 14:31:59,730 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 79 [2018-10-13 14:32:00,175 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 80 [2018-10-13 14:32:00,554 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 81 [2018-10-13 14:32:00,892 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 72 [2018-10-13 14:32:01,366 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 86 [2018-10-13 14:32:01,790 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 80 [2018-10-13 14:32:02,271 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 84 [2018-10-13 14:32:02,685 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 79 [2018-10-13 14:32:03,151 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-13 14:32:03,573 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 77 [2018-10-13 14:32:03,984 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 75 [2018-10-13 14:32:04,440 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 79 [2018-10-13 14:32:04,858 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 80 [2018-10-13 14:32:05,327 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 84 [2018-10-13 14:32:05,738 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 80 [2018-10-13 14:32:06,139 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 76 [2018-10-13 14:32:06,567 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 80 [2018-10-13 14:32:07,058 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 78 [2018-10-13 14:32:08,054 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 86 [2018-10-13 14:32:08,600 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 82 [2018-10-13 14:32:09,143 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 80 [2018-10-13 14:32:10,151 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 80 [2018-10-13 14:32:11,101 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 76 [2018-10-13 14:32:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:32:13,069 INFO L93 Difference]: Finished difference Result 2804 states and 25238 transitions. [2018-10-13 14:32:13,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-13 14:32:13,070 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 46 [2018-10-13 14:32:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:32:13,080 INFO L225 Difference]: With dead ends: 2804 [2018-10-13 14:32:13,080 INFO L226 Difference]: Without dead ends: 2804 [2018-10-13 14:32:13,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=1752, Invalid=4410, Unknown=0, NotChecked=0, Total=6162 [2018-10-13 14:32:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2018-10-13 14:32:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 911. [2018-10-13 14:32:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2018-10-13 14:32:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 8997 transitions. [2018-10-13 14:32:13,135 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 8997 transitions. Word has length 46 [2018-10-13 14:32:13,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:32:13,135 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 8997 transitions. [2018-10-13 14:32:13,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:32:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 8997 transitions. [2018-10-13 14:32:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:32:13,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:32:13,137 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:32:13,137 INFO L424 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:32:13,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:32:13,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1419387906, now seen corresponding path program 1 times [2018-10-13 14:32:13,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:32:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:32:13,612 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2018-10-13 14:32:13,756 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2018-10-13 14:32:13,971 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2018-10-13 14:32:14,320 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 60 [2018-10-13 14:32:14,745 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2018-10-13 14:32:15,337 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 78 [2018-10-13 14:32:16,029 WARN L178 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 86 [2018-10-13 14:32:16,770 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 93 [2018-10-13 14:32:17,761 WARN L178 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 101 [2018-10-13 14:32:18,993 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 323 DAG size of output: 115 [2018-10-13 14:32:20,143 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 350 DAG size of output: 110 [2018-10-13 14:32:21,390 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 367 DAG size of output: 118 [2018-10-13 14:32:22,531 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 377 DAG size of output: 112 [2018-10-13 14:32:23,846 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 384 DAG size of output: 123 [2018-10-13 14:32:24,718 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 108 [2018-10-13 14:32:25,632 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 112 [2018-10-13 14:32:26,523 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 109 [2018-10-13 14:32:27,437 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 106 [2018-10-13 14:32:28,323 WARN L178 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 103 [2018-10-13 14:32:29,158 WARN L178 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 92 [2018-10-13 14:32:29,749 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 74 [2018-10-13 14:32:30,322 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 68 [2018-10-13 14:32:30,785 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 62 [2018-10-13 14:32:31,260 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 59 [2018-10-13 14:32:31,703 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 58 [2018-10-13 14:32:32,093 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 52 [2018-10-13 14:32:32,406 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2018-10-13 14:32:32,654 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2018-10-13 14:32:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:32:33,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:32:33,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:32:33,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:32:33,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:32:33,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:32:33,400 INFO L87 Difference]: Start difference. First operand 911 states and 8997 transitions. Second operand 42 states. [2018-10-13 14:32:34,102 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-13 14:32:34,362 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-13 14:32:34,653 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-13 14:32:35,004 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2018-10-13 14:32:35,411 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2018-10-13 14:32:35,885 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2018-10-13 14:32:36,460 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2018-10-13 14:32:37,064 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 86 [2018-10-13 14:32:37,678 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 90 [2018-10-13 14:32:38,386 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 95 [2018-10-13 14:32:39,119 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 98 [2018-10-13 14:32:39,937 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 106 [2018-10-13 14:32:40,735 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 112 [2018-10-13 14:32:42,141 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 112 [2018-10-13 14:32:43,007 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 112 [2018-10-13 14:32:44,140 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 108 [2018-10-13 14:32:44,966 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 111 [2018-10-13 14:32:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:32:47,953 INFO L93 Difference]: Finished difference Result 1502 states and 13390 transitions. [2018-10-13 14:32:47,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 14:32:47,954 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2018-10-13 14:32:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:32:47,961 INFO L225 Difference]: With dead ends: 1502 [2018-10-13 14:32:47,961 INFO L226 Difference]: Without dead ends: 1502 [2018-10-13 14:32:47,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=743, Invalid=2917, Unknown=0, NotChecked=0, Total=3660 [2018-10-13 14:32:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2018-10-13 14:32:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1121. [2018-10-13 14:32:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2018-10-13 14:32:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 11304 transitions. [2018-10-13 14:32:47,997 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 11304 transitions. Word has length 46 [2018-10-13 14:32:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:32:47,997 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 11304 transitions. [2018-10-13 14:32:47,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:32:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 11304 transitions. [2018-10-13 14:32:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:32:47,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:32:47,999 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:32:47,999 INFO L424 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:32:47,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:32:48,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1419387720, now seen corresponding path program 1 times [2018-10-13 14:32:48,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:32:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:32:48,833 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2018-10-13 14:32:49,041 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 52 [2018-10-13 14:32:49,388 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2018-10-13 14:32:49,699 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 73 [2018-10-13 14:32:50,301 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 87 [2018-10-13 14:32:50,873 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 97 [2018-10-13 14:32:51,661 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 115 [2018-10-13 14:32:52,515 WARN L178 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 142 [2018-10-13 14:32:53,803 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 315 DAG size of output: 162 [2018-10-13 14:32:55,269 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 355 DAG size of output: 194 [2018-10-13 14:32:57,237 WARN L178 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 386 DAG size of output: 204 [2018-10-13 14:32:58,316 WARN L178 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 124 [2018-10-13 14:32:59,508 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 390 DAG size of output: 136 [2018-10-13 14:33:00,827 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 387 DAG size of output: 133 [2018-10-13 14:33:02,075 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 369 DAG size of output: 129 [2018-10-13 14:33:03,199 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 126 [2018-10-13 14:33:04,420 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 362 DAG size of output: 123 [2018-10-13 14:33:05,627 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 341 DAG size of output: 108 [2018-10-13 14:33:06,611 WARN L178 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 91 [2018-10-13 14:33:07,536 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 96 [2018-10-13 14:33:08,474 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 88 [2018-10-13 14:33:09,045 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 62 [2018-10-13 14:33:09,638 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 53 [2018-10-13 14:33:10,204 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 49 [2018-10-13 14:33:10,571 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 38 [2018-10-13 14:33:10,932 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 31 [2018-10-13 14:33:11,205 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 28 [2018-10-13 14:33:11,468 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 22 [2018-10-13 14:33:11,670 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2018-10-13 14:33:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:33:11,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:33:11,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:33:11,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:33:11,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:33:11,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1611, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:33:11,978 INFO L87 Difference]: Start difference. First operand 1121 states and 11304 transitions. Second operand 42 states. [2018-10-13 14:33:12,901 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-13 14:33:13,129 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-13 14:33:13,395 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-10-13 14:33:13,813 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-13 14:33:14,249 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2018-10-13 14:33:14,733 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 97 [2018-10-13 14:33:15,345 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 112 [2018-10-13 14:33:16,115 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 121 [2018-10-13 14:33:17,008 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 128 [2018-10-13 14:33:17,967 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 138 [2018-10-13 14:33:19,011 WARN L178 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 140 [2018-10-13 14:33:19,999 WARN L178 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 143 [2018-10-13 14:33:21,765 WARN L178 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 151 [2018-10-13 14:33:22,870 WARN L178 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 154 [2018-10-13 14:33:24,020 WARN L178 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 155 [2018-10-13 14:33:25,081 WARN L178 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 150 [2018-10-13 14:33:26,332 WARN L178 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 155 [2018-10-13 14:33:27,399 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 149 [2018-10-13 14:33:28,583 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 153 [2018-10-13 14:33:29,650 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 148 [2018-10-13 14:33:30,782 WARN L178 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 146 [2018-10-13 14:33:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:33:35,918 INFO L93 Difference]: Finished difference Result 3620 states and 34453 transitions. [2018-10-13 14:33:35,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-13 14:33:35,919 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2018-10-13 14:33:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:33:35,933 INFO L225 Difference]: With dead ends: 3620 [2018-10-13 14:33:35,933 INFO L226 Difference]: Without dead ends: 3620 [2018-10-13 14:33:35,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=996, Invalid=3560, Unknown=0, NotChecked=0, Total=4556 [2018-10-13 14:33:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2018-10-13 14:33:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 1281. [2018-10-13 14:33:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2018-10-13 14:33:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 13064 transitions. [2018-10-13 14:33:35,997 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 13064 transitions. Word has length 46 [2018-10-13 14:33:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:33:35,997 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 13064 transitions. [2018-10-13 14:33:35,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:33:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 13064 transitions. [2018-10-13 14:33:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:33:35,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:33:35,999 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:33:35,999 INFO L424 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:33:36,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:33:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1421176110, now seen corresponding path program 1 times [2018-10-13 14:33:36,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:33:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:33:36,729 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-10-13 14:33:36,854 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-10-13 14:33:36,986 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-13 14:33:37,150 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-13 14:33:37,300 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-13 14:33:37,454 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-13 14:33:37,627 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-13 14:33:37,806 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2018-10-13 14:33:37,959 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2018-10-13 14:33:38,108 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-13 14:33:38,257 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2018-10-13 14:33:38,422 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2018-10-13 14:33:38,735 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2018-10-13 14:33:38,902 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2018-10-13 14:33:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:33:39,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:33:39,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:33:39,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:33:39,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:33:39,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:33:39,737 INFO L87 Difference]: Start difference. First operand 1281 states and 13064 transitions. Second operand 40 states. [2018-10-13 14:33:40,941 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2018-10-13 14:33:41,108 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 49 [2018-10-13 14:33:41,308 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2018-10-13 14:33:41,459 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2018-10-13 14:33:41,655 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2018-10-13 14:33:41,812 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 46 [2018-10-13 14:33:42,003 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2018-10-13 14:33:42,148 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-10-13 14:33:42,464 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2018-10-13 14:33:42,615 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 43 [2018-10-13 14:33:42,817 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 52 [2018-10-13 14:33:42,959 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 40 [2018-10-13 14:33:43,168 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 51 [2018-10-13 14:33:43,318 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 39 [2018-10-13 14:33:43,650 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-13 14:33:43,879 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2018-10-13 14:33:44,022 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 47 [2018-10-13 14:33:44,212 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2018-10-13 14:33:44,356 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 45 [2018-10-13 14:33:44,546 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2018-10-13 14:33:44,685 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 41 [2018-10-13 14:33:44,822 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 37 [2018-10-13 14:33:44,988 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 49 [2018-10-13 14:33:45,199 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-13 14:33:45,542 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-13 14:33:46,066 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2018-10-13 14:33:46,267 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2018-10-13 14:33:46,478 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2018-10-13 14:33:46,702 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 45 [2018-10-13 14:33:47,418 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2018-10-13 14:33:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:33:49,632 INFO L93 Difference]: Finished difference Result 5427 states and 52114 transitions. [2018-10-13 14:33:49,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-13 14:33:49,632 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 46 [2018-10-13 14:33:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:33:49,652 INFO L225 Difference]: With dead ends: 5427 [2018-10-13 14:33:49,652 INFO L226 Difference]: Without dead ends: 5427 [2018-10-13 14:33:49,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1776, Invalid=4230, Unknown=0, NotChecked=0, Total=6006 [2018-10-13 14:33:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2018-10-13 14:33:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 1309. [2018-10-13 14:33:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2018-10-13 14:33:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 13372 transitions. [2018-10-13 14:33:49,734 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 13372 transitions. Word has length 46 [2018-10-13 14:33:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:33:49,734 INFO L481 AbstractCegarLoop]: Abstraction has 1309 states and 13372 transitions. [2018-10-13 14:33:49,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:33:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 13372 transitions. [2018-10-13 14:33:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:33:49,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:33:49,736 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] [2018-10-13 14:33:49,736 INFO L424 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:33:49,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:33:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1421097149, now seen corresponding path program 1 times [2018-10-13 14:33:49,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:33:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:33:50,945 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-13 14:33:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:33:52,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:33:52,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2018-10-13 14:33:52,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-13 14:33:52,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-13 14:33:52,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2018-10-13 14:33:52,210 INFO L87 Difference]: Start difference. First operand 1309 states and 13372 transitions. Second operand 39 states. [2018-10-13 14:33:53,923 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-13 14:33:54,169 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-13 14:33:54,635 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-10-13 14:33:55,047 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-13 14:33:55,293 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-13 14:33:56,625 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-13 14:33:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:33:57,390 INFO L93 Difference]: Finished difference Result 1584 states and 15571 transitions. [2018-10-13 14:33:57,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 14:33:57,390 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 46 [2018-10-13 14:33:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:33:57,397 INFO L225 Difference]: With dead ends: 1584 [2018-10-13 14:33:57,397 INFO L226 Difference]: Without dead ends: 1584 [2018-10-13 14:33:57,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=847, Invalid=2575, Unknown=0, NotChecked=0, Total=3422 [2018-10-13 14:33:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2018-10-13 14:33:57,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1435. [2018-10-13 14:33:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2018-10-13 14:33:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 14761 transitions. [2018-10-13 14:33:57,431 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 14761 transitions. Word has length 46 [2018-10-13 14:33:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:33:57,431 INFO L481 AbstractCegarLoop]: Abstraction has 1435 states and 14761 transitions. [2018-10-13 14:33:57,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-13 14:33:57,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 14761 transitions. [2018-10-13 14:33:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:33:57,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:33:57,432 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:33:57,433 INFO L424 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:33:57,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:33:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1419268556, now seen corresponding path program 1 times [2018-10-13 14:33:57,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:33:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:33:58,059 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2018-10-13 14:33:58,228 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2018-10-13 14:33:58,448 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2018-10-13 14:33:58,795 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 92 [2018-10-13 14:33:59,178 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 106 [2018-10-13 14:33:59,803 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 115 [2018-10-13 14:34:00,594 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 130 [2018-10-13 14:34:01,639 WARN L178 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 155 [2018-10-13 14:34:02,786 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 266 DAG size of output: 165 [2018-10-13 14:34:04,119 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 285 DAG size of output: 171 [2018-10-13 14:34:05,323 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 320 DAG size of output: 189 [2018-10-13 14:34:07,179 WARN L178 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 353 DAG size of output: 202 [2018-10-13 14:34:08,040 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 87 [2018-10-13 14:34:08,834 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 94 [2018-10-13 14:34:09,642 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 90 [2018-10-13 14:34:10,475 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 87 [2018-10-13 14:34:11,263 WARN L178 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 81 [2018-10-13 14:34:12,107 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 79 [2018-10-13 14:34:12,891 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 78 [2018-10-13 14:34:13,564 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 58 [2018-10-13 14:34:14,086 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 50 [2018-10-13 14:34:14,532 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 48 [2018-10-13 14:34:14,926 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 44 [2018-10-13 14:34:15,391 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 42 [2018-10-13 14:34:15,835 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 42 [2018-10-13 14:34:16,132 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 34 [2018-10-13 14:34:16,351 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 29 [2018-10-13 14:34:16,558 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 27 [2018-10-13 14:34:16,952 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2018-10-13 14:34:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:34:17,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:34:17,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-13 14:34:17,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-13 14:34:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-13 14:34:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1768, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 14:34:17,684 INFO L87 Difference]: Start difference. First operand 1435 states and 14761 transitions. Second operand 44 states. [2018-10-13 14:34:18,685 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2018-10-13 14:34:18,962 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 57 [2018-10-13 14:34:19,336 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 61 [2018-10-13 14:34:19,779 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 74 [2018-10-13 14:34:20,275 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2018-10-13 14:34:20,937 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 83 [2018-10-13 14:34:21,629 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 97 [2018-10-13 14:34:22,468 WARN L178 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 100 [2018-10-13 14:34:23,379 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 108 [2018-10-13 14:34:24,404 WARN L178 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 118 [2018-10-13 14:34:26,133 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 119 [2018-10-13 14:34:27,227 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 119 [2018-10-13 14:34:28,276 WARN L178 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 122 [2018-10-13 14:34:29,277 WARN L178 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 116 [2018-10-13 14:34:30,355 WARN L178 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 123 [2018-10-13 14:34:31,387 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 117 [2018-10-13 14:34:32,420 WARN L178 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 121 [2018-10-13 14:34:33,416 WARN L178 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 113 [2018-10-13 14:34:34,379 WARN L178 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 118 [2018-10-13 14:34:35,466 WARN L178 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 123 [2018-10-13 14:34:36,558 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 122 [2018-10-13 14:34:37,631 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 120 [2018-10-13 14:34:38,655 WARN L178 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 119 [2018-10-13 14:34:39,814 WARN L178 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 121 [2018-10-13 14:34:40,878 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 120 [2018-10-13 14:34:41,890 WARN L178 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 116 [2018-10-13 14:34:42,980 WARN L178 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 118 [2018-10-13 14:34:44,044 WARN L178 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 124 [2018-10-13 14:34:45,049 WARN L178 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 118 [2018-10-13 14:34:46,110 WARN L178 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 123 [2018-10-13 14:34:47,106 WARN L178 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 115 [2018-10-13 14:34:48,197 WARN L178 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 122 [2018-10-13 14:34:49,232 WARN L178 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 121 [2018-10-13 14:34:50,278 WARN L178 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 120 [2018-10-13 14:34:51,651 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 117 [2018-10-13 14:34:53,104 WARN L178 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 117 [2018-10-13 14:34:55,303 WARN L178 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 121 [2018-10-13 14:34:56,373 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 121 [2018-10-13 14:34:57,454 WARN L178 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 119 [2018-10-13 14:34:58,599 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 115 [2018-10-13 14:34:59,796 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 113 [2018-10-13 14:35:01,770 WARN L178 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 115 [2018-10-13 14:35:03,046 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 118 [2018-10-13 14:35:06,391 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 110 [2018-10-13 14:35:07,668 WARN L178 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 126 [2018-10-13 14:35:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:35:07,964 INFO L93 Difference]: Finished difference Result 4741 states and 44745 transitions. [2018-10-13 14:35:07,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-13 14:35:07,965 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 46 [2018-10-13 14:35:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:35:07,982 INFO L225 Difference]: With dead ends: 4741 [2018-10-13 14:35:07,982 INFO L226 Difference]: Without dead ends: 4741 [2018-10-13 14:35:07,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 60.7s TimeCoverageRelationStatistics Valid=2582, Invalid=5974, Unknown=0, NotChecked=0, Total=8556 [2018-10-13 14:35:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4741 states. [2018-10-13 14:35:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4741 to 1443. [2018-10-13 14:35:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2018-10-13 14:35:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 14849 transitions. [2018-10-13 14:35:08,087 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 14849 transitions. Word has length 46 [2018-10-13 14:35:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:35:08,087 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 14849 transitions. [2018-10-13 14:35:08,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-13 14:35:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 14849 transitions. [2018-10-13 14:35:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:35:08,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:35:08,089 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] [2018-10-13 14:35:08,089 INFO L424 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:35:08,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:35:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1420977985, now seen corresponding path program 1 times [2018-10-13 14:35:08,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:35:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:35:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:35:10,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:35:10,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2018-10-13 14:35:10,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:35:10,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:35:10,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:35:10,453 INFO L87 Difference]: Start difference. First operand 1443 states and 14849 transitions. Second operand 40 states. [2018-10-13 14:35:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:35:14,070 INFO L93 Difference]: Finished difference Result 1907 states and 19139 transitions. [2018-10-13 14:35:14,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 14:35:14,070 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 46 [2018-10-13 14:35:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:35:14,078 INFO L225 Difference]: With dead ends: 1907 [2018-10-13 14:35:14,078 INFO L226 Difference]: Without dead ends: 1907 [2018-10-13 14:35:14,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=763, Invalid=2659, Unknown=0, NotChecked=0, Total=3422 [2018-10-13 14:35:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2018-10-13 14:35:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1785. [2018-10-13 14:35:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1785 states. [2018-10-13 14:35:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 18616 transitions. [2018-10-13 14:35:14,122 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 18616 transitions. Word has length 46 [2018-10-13 14:35:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:35:14,123 INFO L481 AbstractCegarLoop]: Abstraction has 1785 states and 18616 transitions. [2018-10-13 14:35:14,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:35:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 18616 transitions. [2018-10-13 14:35:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:35:14,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:35:14,124 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:35:14,125 INFO L424 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:35:14,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:35:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1419149392, now seen corresponding path program 1 times [2018-10-13 14:35:14,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:35:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:35:14,774 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2018-10-13 14:35:15,016 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2018-10-13 14:35:15,239 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2018-10-13 14:35:15,500 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2018-10-13 14:35:15,842 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 71 [2018-10-13 14:35:16,280 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 78 [2018-10-13 14:35:17,032 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 87 [2018-10-13 14:35:17,877 WARN L178 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 96 [2018-10-13 14:35:18,980 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 266 DAG size of output: 112 [2018-10-13 14:35:19,683 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 113 [2018-10-13 14:35:20,517 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 120 [2018-10-13 14:35:21,165 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 103 [2018-10-13 14:35:21,921 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 111 [2018-10-13 14:35:22,680 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 108 [2018-10-13 14:35:23,466 WARN L178 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 105 [2018-10-13 14:35:24,322 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 103 [2018-10-13 14:35:25,052 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 99 [2018-10-13 14:35:25,926 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 95 [2018-10-13 14:35:26,580 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 85 [2018-10-13 14:35:27,217 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 80 [2018-10-13 14:35:27,833 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 75 [2018-10-13 14:35:28,410 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 72 [2018-10-13 14:35:28,991 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 65 [2018-10-13 14:35:29,431 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 60 [2018-10-13 14:35:29,759 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 42 [2018-10-13 14:35:29,983 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 36 [2018-10-13 14:35:30,183 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 31 [2018-10-13 14:35:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:35:30,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:35:30,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:35:30,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:35:30,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:35:30,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:35:30,846 INFO L87 Difference]: Start difference. First operand 1785 states and 18616 transitions. Second operand 42 states. [2018-10-13 14:35:31,981 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-13 14:35:32,220 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-13 14:35:32,425 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-13 14:35:32,727 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-10-13 14:35:33,164 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2018-10-13 14:35:33,650 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2018-10-13 14:35:34,248 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 107 [2018-10-13 14:35:34,922 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 110 [2018-10-13 14:35:35,522 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 108 [2018-10-13 14:35:36,688 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 121 [2018-10-13 14:35:37,385 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 122 [2018-10-13 14:35:38,136 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 120 [2018-10-13 14:35:38,850 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 120 [2018-10-13 14:35:39,676 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 110 [2018-10-13 14:35:40,432 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 109 [2018-10-13 14:35:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:35:43,314 INFO L93 Difference]: Finished difference Result 3716 states and 36808 transitions. [2018-10-13 14:35:43,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-13 14:35:43,315 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2018-10-13 14:35:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:35:43,330 INFO L225 Difference]: With dead ends: 3716 [2018-10-13 14:35:43,330 INFO L226 Difference]: Without dead ends: 3716 [2018-10-13 14:35:43,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=840, Invalid=3066, Unknown=0, NotChecked=0, Total=3906 [2018-10-13 14:35:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2018-10-13 14:35:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 2309. [2018-10-13 14:35:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2018-10-13 14:35:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 24380 transitions. [2018-10-13 14:35:43,421 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 24380 transitions. Word has length 46 [2018-10-13 14:35:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:35:43,422 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 24380 transitions. [2018-10-13 14:35:43,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:35:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 24380 transitions. [2018-10-13 14:35:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:35:43,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:35:43,424 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:35:43,424 INFO L424 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:35:43,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:35:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1419030228, now seen corresponding path program 1 times [2018-10-13 14:35:43,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:35:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:35:44,181 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-10-13 14:35:44,320 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2018-10-13 14:35:44,481 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-13 14:35:44,668 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-13 14:35:44,878 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2018-10-13 14:35:45,228 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2018-10-13 14:35:45,692 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 108 [2018-10-13 14:35:46,333 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 129 [2018-10-13 14:35:46,970 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 153 [2018-10-13 14:35:48,148 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 303 DAG size of output: 179 [2018-10-13 14:35:49,931 WARN L178 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 356 DAG size of output: 206 [2018-10-13 14:35:50,628 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 68 [2018-10-13 14:35:51,547 WARN L178 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 98 [2018-10-13 14:35:52,497 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 95 [2018-10-13 14:35:53,386 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 92 [2018-10-13 14:35:54,246 WARN L178 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 88 [2018-10-13 14:35:55,172 WARN L178 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 86 [2018-10-13 14:35:56,115 WARN L178 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 82 [2018-10-13 14:35:56,947 WARN L178 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 70 [2018-10-13 14:35:57,746 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 64 [2018-10-13 14:35:58,507 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 62 [2018-10-13 14:35:59,081 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 48 [2018-10-13 14:35:59,684 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 37 [2018-10-13 14:36:00,191 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 34 [2018-10-13 14:36:00,630 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 30 [2018-10-13 14:36:00,991 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 29 [2018-10-13 14:36:01,300 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 24 [2018-10-13 14:36:01,558 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 21 [2018-10-13 14:36:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:36:02,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:36:02,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:36:02,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:36:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:36:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1678, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:36:02,238 INFO L87 Difference]: Start difference. First operand 2309 states and 24380 transitions. Second operand 43 states. [2018-10-13 14:36:03,228 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-10-13 14:36:03,548 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-13 14:36:03,851 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2018-10-13 14:36:04,237 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2018-10-13 14:36:04,683 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 83 [2018-10-13 14:36:05,195 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 93 [2018-10-13 14:36:05,870 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 111 [2018-10-13 14:36:06,700 WARN L178 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 118 [2018-10-13 14:36:07,724 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 129 [2018-10-13 14:36:08,774 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 132 [2018-10-13 14:36:09,829 WARN L178 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 135 [2018-10-13 14:36:11,673 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 337 DAG size of output: 140 [2018-10-13 14:36:12,878 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 335 DAG size of output: 138 [2018-10-13 14:36:14,048 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 306 DAG size of output: 141 [2018-10-13 14:36:15,222 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 337 DAG size of output: 140 [2018-10-13 14:36:16,421 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 336 DAG size of output: 138 [2018-10-13 14:36:17,520 WARN L178 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 137 [2018-10-13 14:36:18,754 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 332 DAG size of output: 145 [2018-10-13 14:36:19,919 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 338 DAG size of output: 139 [2018-10-13 14:36:21,201 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 337 DAG size of output: 137 [2018-10-13 14:36:22,474 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 345 DAG size of output: 139 [2018-10-13 14:36:23,747 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 337 DAG size of output: 140 [2018-10-13 14:36:24,900 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 338 DAG size of output: 140 [2018-10-13 14:36:26,081 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 339 DAG size of output: 139 [2018-10-13 14:36:27,357 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 335 DAG size of output: 138 [2018-10-13 14:36:29,119 WARN L178 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 139 [2018-10-13 14:36:30,473 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 330 DAG size of output: 143 [2018-10-13 14:36:32,565 WARN L178 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 138 [2018-10-13 14:36:34,577 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 336 DAG size of output: 137 [2018-10-13 14:36:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:36:37,681 INFO L93 Difference]: Finished difference Result 5562 states and 56107 transitions. [2018-10-13 14:36:37,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-13 14:36:37,682 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 46 [2018-10-13 14:36:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:36:37,704 INFO L225 Difference]: With dead ends: 5562 [2018-10-13 14:36:37,705 INFO L226 Difference]: Without dead ends: 5562 [2018-10-13 14:36:37,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=1516, Invalid=4184, Unknown=0, NotChecked=0, Total=5700 [2018-10-13 14:36:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2018-10-13 14:36:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 2347. [2018-10-13 14:36:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2018-10-13 14:36:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 24791 transitions. [2018-10-13 14:36:37,897 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 24791 transitions. Word has length 46 [2018-10-13 14:36:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:36:37,897 INFO L481 AbstractCegarLoop]: Abstraction has 2347 states and 24791 transitions. [2018-10-13 14:36:37,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:36:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 24791 transitions. [2018-10-13 14:36:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:36:37,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:36:37,900 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] [2018-10-13 14:36:37,900 INFO L424 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:36:37,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:36:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1418892615, now seen corresponding path program 1 times [2018-10-13 14:36:37,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:36:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:36:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:36:39,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:36:39,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-13 14:36:39,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-13 14:36:39,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-13 14:36:39,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1175, Unknown=0, NotChecked=0, Total=1482 [2018-10-13 14:36:39,368 INFO L87 Difference]: Start difference. First operand 2347 states and 24791 transitions. Second operand 39 states. [2018-10-13 14:36:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:36:41,842 INFO L93 Difference]: Finished difference Result 2448 states and 25318 transitions. [2018-10-13 14:36:41,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 14:36:41,842 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 46 [2018-10-13 14:36:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:36:41,853 INFO L225 Difference]: With dead ends: 2448 [2018-10-13 14:36:41,853 INFO L226 Difference]: Without dead ends: 2448 [2018-10-13 14:36:41,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=671, Invalid=2191, Unknown=0, NotChecked=0, Total=2862 [2018-10-13 14:36:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2018-10-13 14:36:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2391. [2018-10-13 14:36:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2391 states. [2018-10-13 14:36:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 25277 transitions. [2018-10-13 14:36:41,912 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 25277 transitions. Word has length 46 [2018-10-13 14:36:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:36:41,912 INFO L481 AbstractCegarLoop]: Abstraction has 2391 states and 25277 transitions. [2018-10-13 14:36:41,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-13 14:36:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 25277 transitions. [2018-10-13 14:36:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 14:36:41,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:36:41,914 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] [2018-10-13 14:36:41,914 INFO L424 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:36:41,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:36:41,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1343904696, now seen corresponding path program 1 times [2018-10-13 14:36:41,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:36:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:36:42,377 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2018-10-13 14:36:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:36:43,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:36:43,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2018-10-13 14:36:43,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 14:36:43,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 14:36:43,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 14:36:43,867 INFO L87 Difference]: Start difference. First operand 2391 states and 25277 transitions. Second operand 34 states. [2018-10-13 14:36:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:36:45,433 INFO L93 Difference]: Finished difference Result 3005 states and 31231 transitions. [2018-10-13 14:36:45,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 14:36:45,433 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 46 [2018-10-13 14:36:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:36:45,446 INFO L225 Difference]: With dead ends: 3005 [2018-10-13 14:36:45,447 INFO L226 Difference]: Without dead ends: 3005 [2018-10-13 14:36:45,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=418, Invalid=1388, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:36:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2018-10-13 14:36:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2889. [2018-10-13 14:36:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2889 states. [2018-10-13 14:36:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 30679 transitions. [2018-10-13 14:36:45,515 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 30679 transitions. Word has length 46 [2018-10-13 14:36:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:36:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 2889 states and 30679 transitions. [2018-10-13 14:36:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 14:36:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 30679 transitions. [2018-10-13 14:36:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:36:45,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:36:45,517 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:36:45,517 INFO L424 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:36:45,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:36:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1092052240, now seen corresponding path program 1 times [2018-10-13 14:36:45,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:36:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:36:46,140 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2018-10-13 14:36:46,274 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 39 [2018-10-13 14:36:46,433 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2018-10-13 14:36:46,608 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 49 [2018-10-13 14:36:46,882 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 56 [2018-10-13 14:36:47,183 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 59 [2018-10-13 14:36:47,692 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 63 [2018-10-13 14:36:48,369 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 88 [2018-10-13 14:36:49,079 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 101 [2018-10-13 14:36:49,876 WARN L178 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 111 [2018-10-13 14:36:50,832 WARN L178 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 123 [2018-10-13 14:36:51,721 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 83 [2018-10-13 14:36:52,771 WARN L178 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 87 [2018-10-13 14:36:53,745 WARN L178 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 91 [2018-10-13 14:36:54,770 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 91 [2018-10-13 14:36:55,891 WARN L178 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 100 [2018-10-13 14:36:57,072 WARN L178 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 95 [2018-10-13 14:36:58,162 WARN L178 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 90 [2018-10-13 14:36:59,235 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 84 [2018-10-13 14:37:00,389 WARN L178 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 74 [2018-10-13 14:37:01,149 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 55 [2018-10-13 14:37:01,905 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 50 [2018-10-13 14:37:02,563 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 46 [2018-10-13 14:37:03,053 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 43 [2018-10-13 14:37:03,566 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 42 [2018-10-13 14:37:03,962 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 39 [2018-10-13 14:37:04,241 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 31 [2018-10-13 14:37:04,519 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 28 [2018-10-13 14:37:04,698 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 25 [2018-10-13 14:37:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:37:05,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:37:05,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:37:05,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:37:05,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:37:05,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1588, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:37:05,268 INFO L87 Difference]: Start difference. First operand 2889 states and 30679 transitions. Second operand 42 states. [2018-10-13 14:37:06,721 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2018-10-13 14:37:07,358 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 71 [2018-10-13 14:37:08,233 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 87 [2018-10-13 14:37:08,739 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 97 [2018-10-13 14:37:09,263 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 85 [2018-10-13 14:37:09,816 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 96 [2018-10-13 14:37:10,293 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 84 [2018-10-13 14:37:10,787 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 83 [2018-10-13 14:37:11,373 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 95 [2018-10-13 14:37:11,883 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 81 [2018-10-13 14:37:12,454 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 92 [2018-10-13 14:37:12,924 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 78 [2018-10-13 14:37:13,519 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 91 [2018-10-13 14:37:13,983 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 76 [2018-10-13 14:37:14,446 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2018-10-13 14:37:15,006 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 89 [2018-10-13 14:37:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:37:19,742 INFO L93 Difference]: Finished difference Result 7537 states and 74393 transitions. [2018-10-13 14:37:19,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 14:37:19,742 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2018-10-13 14:37:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:37:19,771 INFO L225 Difference]: With dead ends: 7537 [2018-10-13 14:37:19,771 INFO L226 Difference]: Without dead ends: 7537 [2018-10-13 14:37:19,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=998, Invalid=3292, Unknown=0, NotChecked=0, Total=4290 [2018-10-13 14:37:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7537 states. [2018-10-13 14:37:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7537 to 2899. [2018-10-13 14:37:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2018-10-13 14:37:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 30789 transitions. [2018-10-13 14:37:19,891 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 30789 transitions. Word has length 47 [2018-10-13 14:37:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:37:19,891 INFO L481 AbstractCegarLoop]: Abstraction has 2899 states and 30789 transitions. [2018-10-13 14:37:19,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:37:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 30789 transitions. [2018-10-13 14:37:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:37:19,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:37:19,894 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:37:19,894 INFO L424 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:37:19,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:37:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1062499568, now seen corresponding path program 1 times [2018-10-13 14:37:19,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:37:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:37:20,557 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 31 [2018-10-13 14:37:20,790 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 44 [2018-10-13 14:37:21,040 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 31 [2018-10-13 14:37:21,191 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 34 [2018-10-13 14:37:21,360 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 40 [2018-10-13 14:37:21,551 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 44 [2018-10-13 14:37:21,705 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 51 [2018-10-13 14:37:21,881 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 55 [2018-10-13 14:37:22,057 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 54 [2018-10-13 14:37:22,309 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 79 [2018-10-13 14:37:22,554 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 76 [2018-10-13 14:37:22,789 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 72 [2018-10-13 14:37:23,108 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 69 [2018-10-13 14:37:23,390 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 67 [2018-10-13 14:37:23,633 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 64 [2018-10-13 14:37:23,865 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 62 [2018-10-13 14:37:24,068 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2018-10-13 14:37:24,333 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 57 [2018-10-13 14:37:24,524 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-13 14:37:24,719 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2018-10-13 14:37:24,932 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2018-10-13 14:37:25,124 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2018-10-13 14:37:25,357 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2018-10-13 14:37:25,563 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2018-10-13 14:37:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:37:26,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:37:26,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:37:26,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:37:26,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:37:26,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:37:26,081 INFO L87 Difference]: Start difference. First operand 2899 states and 30789 transitions. Second operand 40 states. [2018-10-13 14:37:27,043 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2018-10-13 14:37:27,354 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2018-10-13 14:37:27,836 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2018-10-13 14:37:28,546 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2018-10-13 14:37:29,029 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2018-10-13 14:37:29,311 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2018-10-13 14:37:29,757 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2018-10-13 14:37:30,216 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2018-10-13 14:37:30,655 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2018-10-13 14:37:31,097 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2018-10-13 14:37:31,528 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 74 [2018-10-13 14:37:31,970 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2018-10-13 14:37:32,326 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 72 [2018-10-13 14:37:32,679 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 70 [2018-10-13 14:37:33,009 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-13 14:37:33,512 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2018-10-13 14:37:36,962 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 68 [2018-10-13 14:37:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:37:37,866 INFO L93 Difference]: Finished difference Result 7620 states and 76039 transitions. [2018-10-13 14:37:37,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-13 14:37:37,867 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 47 [2018-10-13 14:37:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:37:37,898 INFO L225 Difference]: With dead ends: 7620 [2018-10-13 14:37:37,898 INFO L226 Difference]: Without dead ends: 7620 [2018-10-13 14:37:37,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1163, Invalid=3393, Unknown=0, NotChecked=0, Total=4556 [2018-10-13 14:37:37,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2018-10-13 14:37:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 2969. [2018-10-13 14:37:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2969 states. [2018-10-13 14:37:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 31558 transitions. [2018-10-13 14:37:38,037 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 31558 transitions. Word has length 47 [2018-10-13 14:37:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:37:38,037 INFO L481 AbstractCegarLoop]: Abstraction has 2969 states and 31558 transitions. [2018-10-13 14:37:38,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:37:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 31558 transitions. [2018-10-13 14:37:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:37:38,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:37:38,039 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:37:38,039 INFO L424 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:37:38,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:37:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1062438064, now seen corresponding path program 1 times [2018-10-13 14:37:38,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:37:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:37:38,889 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-13 14:37:39,047 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-10-13 14:37:39,259 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2018-10-13 14:37:39,466 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 80 [2018-10-13 14:37:39,827 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2018-10-13 14:37:40,214 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-13 14:37:40,592 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 80 [2018-10-13 14:37:40,965 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2018-10-13 14:37:41,330 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2018-10-13 14:37:41,692 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2018-10-13 14:37:42,048 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2018-10-13 14:37:42,402 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-13 14:37:42,739 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-13 14:37:43,067 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-13 14:37:43,351 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-13 14:37:43,630 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2018-10-13 14:37:43,901 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-13 14:37:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:37:44,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:37:44,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:37:44,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:37:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:37:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1364, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:37:44,452 INFO L87 Difference]: Start difference. First operand 2969 states and 31558 transitions. Second operand 40 states. [2018-10-13 14:37:45,604 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-13 14:37:45,798 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-13 14:37:46,004 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2018-10-13 14:37:46,234 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2018-10-13 14:37:46,522 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2018-10-13 14:37:47,116 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2018-10-13 14:37:47,362 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2018-10-13 14:37:47,693 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2018-10-13 14:37:47,964 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2018-10-13 14:37:48,196 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 75 [2018-10-13 14:37:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:37:50,196 INFO L93 Difference]: Finished difference Result 3912 states and 39129 transitions. [2018-10-13 14:37:50,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-13 14:37:50,197 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 47 [2018-10-13 14:37:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:37:50,213 INFO L225 Difference]: With dead ends: 3912 [2018-10-13 14:37:50,213 INFO L226 Difference]: Without dead ends: 3912 [2018-10-13 14:37:50,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=796, Invalid=2744, Unknown=0, NotChecked=0, Total=3540 [2018-10-13 14:37:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2018-10-13 14:37:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3191. [2018-10-13 14:37:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2018-10-13 14:37:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 34003 transitions. [2018-10-13 14:37:50,300 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 34003 transitions. Word has length 47 [2018-10-13 14:37:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:37:50,300 INFO L481 AbstractCegarLoop]: Abstraction has 3191 states and 34003 transitions. [2018-10-13 14:37:50,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:37:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 34003 transitions. [2018-10-13 14:37:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:37:50,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:37:50,303 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:37:50,303 INFO L424 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:37:50,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:37:50,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1058805484, now seen corresponding path program 1 times [2018-10-13 14:37:50,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:37:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:37:50,761 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 23 [2018-10-13 14:37:50,910 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 27 [2018-10-13 14:37:51,115 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 28 [2018-10-13 14:37:51,504 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 47 [2018-10-13 14:37:51,706 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 55 [2018-10-13 14:37:51,981 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 63 [2018-10-13 14:37:52,231 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 57 [2018-10-13 14:37:52,558 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 68 [2018-10-13 14:37:52,918 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2018-10-13 14:37:53,308 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 79 [2018-10-13 14:37:53,742 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 83 [2018-10-13 14:37:54,097 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 71 [2018-10-13 14:37:54,556 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 72 [2018-10-13 14:37:55,016 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 87 [2018-10-13 14:37:55,474 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 84 [2018-10-13 14:37:55,894 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 81 [2018-10-13 14:37:56,304 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 78 [2018-10-13 14:37:56,649 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2018-10-13 14:37:57,002 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2018-10-13 14:37:57,351 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2018-10-13 14:37:57,671 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2018-10-13 14:37:58,036 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 54 [2018-10-13 14:37:58,335 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 50 [2018-10-13 14:37:58,533 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-13 14:37:58,792 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2018-10-13 14:37:59,047 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2018-10-13 14:37:59,238 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2018-10-13 14:37:59,404 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2018-10-13 14:38:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:38:00,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:38:00,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-13 14:38:00,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-13 14:38:00,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-13 14:38:00,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1670, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 14:38:00,009 INFO L87 Difference]: Start difference. First operand 3191 states and 34003 transitions. Second operand 43 states. [2018-10-13 14:38:00,886 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2018-10-13 14:38:01,140 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2018-10-13 14:38:01,416 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 58 [2018-10-13 14:38:01,701 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 61 [2018-10-13 14:38:02,003 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 64 [2018-10-13 14:38:02,338 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 70 [2018-10-13 14:38:02,677 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2018-10-13 14:38:03,522 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 80 [2018-10-13 14:38:03,965 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 83 [2018-10-13 14:38:04,386 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 79 [2018-10-13 14:38:04,867 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 93 [2018-10-13 14:38:05,313 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 81 [2018-10-13 14:38:05,758 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 88 [2018-10-13 14:38:06,130 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 77 [2018-10-13 14:38:06,487 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 76 [2018-10-13 14:38:06,942 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 87 [2018-10-13 14:38:07,339 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 79 [2018-10-13 14:38:07,764 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 83 [2018-10-13 14:38:08,134 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 75 [2018-10-13 14:38:08,527 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2018-10-13 14:38:08,999 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 85 [2018-10-13 14:38:09,659 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2018-10-13 14:38:10,187 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 84 [2018-10-13 14:38:10,778 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 82 [2018-10-13 14:38:11,207 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2018-10-13 14:38:11,616 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 80 [2018-10-13 14:38:12,202 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 82 [2018-10-13 14:38:12,944 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 78 [2018-10-13 14:38:13,772 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 91 [2018-10-13 14:38:14,234 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 80 [2018-10-13 14:38:15,095 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2018-10-13 14:38:15,619 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 86 [2018-10-13 14:38:16,056 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 78 [2018-10-13 14:38:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:38:18,760 INFO L93 Difference]: Finished difference Result 9467 states and 96610 transitions. [2018-10-13 14:38:18,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-13 14:38:18,761 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 47 [2018-10-13 14:38:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:38:18,800 INFO L225 Difference]: With dead ends: 9467 [2018-10-13 14:38:18,801 INFO L226 Difference]: Without dead ends: 9467 [2018-10-13 14:38:18,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=1785, Invalid=4377, Unknown=0, NotChecked=0, Total=6162 [2018-10-13 14:38:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2018-10-13 14:38:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 3557. [2018-10-13 14:38:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2018-10-13 14:38:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 38038 transitions. [2018-10-13 14:38:18,955 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 38038 transitions. Word has length 47 [2018-10-13 14:38:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:38:18,956 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 38038 transitions. [2018-10-13 14:38:18,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-13 14:38:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 38038 transitions. [2018-10-13 14:38:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:38:18,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:38:18,958 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:38:18,958 INFO L424 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:38:18,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:38:18,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1055053740, now seen corresponding path program 1 times [2018-10-13 14:38:18,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:38:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:38:19,670 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2018-10-13 14:38:19,909 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 51 [2018-10-13 14:38:20,262 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2018-10-13 14:38:20,634 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 63 [2018-10-13 14:38:20,935 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 65 [2018-10-13 14:38:21,369 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2018-10-13 14:38:21,822 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 92 [2018-10-13 14:38:22,336 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 96 [2018-10-13 14:38:22,951 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 103 [2018-10-13 14:38:23,551 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 101 [2018-10-13 14:38:24,255 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 114 [2018-10-13 14:38:24,948 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 111 [2018-10-13 14:38:25,637 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 108 [2018-10-13 14:38:26,188 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 105 [2018-10-13 14:38:26,800 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 100 [2018-10-13 14:38:27,310 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 96 [2018-10-13 14:38:27,837 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 79 [2018-10-13 14:38:28,211 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 65 [2018-10-13 14:38:28,568 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 61 [2018-10-13 14:38:28,891 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 58 [2018-10-13 14:38:29,213 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2018-10-13 14:38:29,491 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2018-10-13 14:38:29,698 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2018-10-13 14:38:30,036 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 41 [2018-10-13 14:38:30,236 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2018-10-13 14:38:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:38:30,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:38:30,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-13 14:38:30,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-13 14:38:30,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-13 14:38:30,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1522, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 14:38:30,793 INFO L87 Difference]: Start difference. First operand 3557 states and 38038 transitions. Second operand 41 states. [2018-10-13 14:38:31,762 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-13 14:38:31,949 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-13 14:38:32,161 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-13 14:38:32,446 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-13 14:38:32,804 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2018-10-13 14:38:33,196 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2018-10-13 14:38:33,776 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 103 [2018-10-13 14:38:34,411 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 108 [2018-10-13 14:38:35,139 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 116 [2018-10-13 14:38:36,023 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 128 [2018-10-13 14:38:37,299 WARN L178 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 129 [2018-10-13 14:38:38,241 WARN L178 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 128 [2018-10-13 14:38:39,120 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 126 [2018-10-13 14:38:39,995 WARN L178 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 125 [2018-10-13 14:38:40,794 WARN L178 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 121 [2018-10-13 14:38:41,685 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 126 [2018-10-13 14:38:42,620 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 128 [2018-10-13 14:38:43,635 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 134 [2018-10-13 14:38:44,536 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 129 [2018-10-13 14:38:45,377 WARN L178 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 125 [2018-10-13 14:38:46,167 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 122 [2018-10-13 14:38:47,152 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 129 [2018-10-13 14:38:48,015 WARN L178 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 123 [2018-10-13 14:38:49,013 WARN L178 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 130 [2018-10-13 14:38:50,134 WARN L178 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 124 [2018-10-13 14:38:51,352 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 131 [2018-10-13 14:38:52,495 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 127 [2018-10-13 14:38:53,423 WARN L178 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 130 [2018-10-13 14:38:54,281 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 125 [2018-10-13 14:38:55,898 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 133 [2018-10-13 14:38:56,955 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 124 [2018-10-13 14:38:57,966 WARN L178 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 132 [2018-10-13 14:39:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:39:00,341 INFO L93 Difference]: Finished difference Result 8398 states and 86071 transitions. [2018-10-13 14:39:00,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-13 14:39:00,341 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 47 [2018-10-13 14:39:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:39:00,377 INFO L225 Difference]: With dead ends: 8398 [2018-10-13 14:39:00,377 INFO L226 Difference]: Without dead ends: 8398 [2018-10-13 14:39:00,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=1734, Invalid=4428, Unknown=0, NotChecked=0, Total=6162 [2018-10-13 14:39:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2018-10-13 14:39:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 4091. [2018-10-13 14:39:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4091 states. [2018-10-13 14:39:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 43692 transitions. [2018-10-13 14:39:00,532 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 43692 transitions. Word has length 47 [2018-10-13 14:39:00,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:39:00,532 INFO L481 AbstractCegarLoop]: Abstraction has 4091 states and 43692 transitions. [2018-10-13 14:39:00,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-13 14:39:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 43692 transitions. [2018-10-13 14:39:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:39:00,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:39:00,534 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:39:00,534 INFO L424 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:39:00,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:39:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1055111400, now seen corresponding path program 1 times [2018-10-13 14:39:00,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:39:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:39:01,303 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 33 [2018-10-13 14:39:01,619 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-10-13 14:39:01,918 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 52 [2018-10-13 14:39:02,336 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 61 [2018-10-13 14:39:02,973 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 77 [2018-10-13 14:39:03,566 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 90 [2018-10-13 14:39:04,406 WARN L178 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 111 [2018-10-13 14:39:05,522 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 268 DAG size of output: 129 [2018-10-13 14:39:05,959 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 89 [2018-10-13 14:39:06,457 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 99 [2018-10-13 14:39:07,009 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 106 [2018-10-13 14:39:07,536 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 102 [2018-10-13 14:39:08,182 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 107 [2018-10-13 14:39:08,803 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 111 [2018-10-13 14:39:09,437 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 116 [2018-10-13 14:39:10,045 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 113 [2018-10-13 14:39:10,620 WARN L178 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 110 [2018-10-13 14:39:11,126 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 84 [2018-10-13 14:39:11,583 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 80 [2018-10-13 14:39:12,183 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 84 [2018-10-13 14:39:12,604 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 61 [2018-10-13 14:39:13,188 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 65 [2018-10-13 14:39:13,635 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 54 [2018-10-13 14:39:13,951 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 46 [2018-10-13 14:39:14,279 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 43 [2018-10-13 14:39:14,539 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2018-10-13 14:39:14,764 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2018-10-13 14:39:14,973 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 25 [2018-10-13 14:39:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:39:15,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:39:15,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:39:15,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:39:15,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:39:15,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:39:15,603 INFO L87 Difference]: Start difference. First operand 4091 states and 43692 transitions. Second operand 42 states. [2018-10-13 14:39:16,316 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-13 14:39:16,550 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-10-13 14:39:16,810 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 14:39:17,118 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2018-10-13 14:39:17,488 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2018-10-13 14:39:17,916 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 96 [2018-10-13 14:39:18,555 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 103 [2018-10-13 14:39:19,191 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 106 [2018-10-13 14:39:19,890 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 110 [2018-10-13 14:39:20,782 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 120 [2018-10-13 14:39:21,761 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 122 [2018-10-13 14:39:23,374 WARN L178 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 139 [2018-10-13 14:39:24,314 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 135 [2018-10-13 14:39:25,257 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 133 [2018-10-13 14:39:26,385 WARN L178 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 140 [2018-10-13 14:39:27,507 WARN L178 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 132 [2018-10-13 14:39:28,670 WARN L178 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 138 [2018-10-13 14:39:29,637 WARN L178 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 131 [2018-10-13 14:39:30,794 WARN L178 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 137 [2018-10-13 14:39:31,700 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 129 [2018-10-13 14:39:32,832 WARN L178 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 136 [2018-10-13 14:39:33,744 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 127 [2018-10-13 14:39:34,711 WARN L178 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 125 [2018-10-13 14:39:35,681 WARN L178 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 136 [2018-10-13 14:39:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:39:40,765 INFO L93 Difference]: Finished difference Result 11345 states and 116383 transitions. [2018-10-13 14:39:40,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-13 14:39:40,765 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2018-10-13 14:39:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:39:40,809 INFO L225 Difference]: With dead ends: 11345 [2018-10-13 14:39:40,809 INFO L226 Difference]: Without dead ends: 11345 [2018-10-13 14:39:40,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=1107, Invalid=3585, Unknown=0, NotChecked=0, Total=4692 [2018-10-13 14:39:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11345 states. [2018-10-13 14:39:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11345 to 4207. [2018-10-13 14:39:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4207 states. [2018-10-13 14:39:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 44968 transitions. [2018-10-13 14:39:41,001 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 44968 transitions. Word has length 47 [2018-10-13 14:39:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:39:41,002 INFO L481 AbstractCegarLoop]: Abstraction has 4207 states and 44968 transitions. [2018-10-13 14:39:41,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:39:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 44968 transitions. [2018-10-13 14:39:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:39:41,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:39:41,004 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:39:41,004 INFO L424 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:39:41,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:39:41,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1051355812, now seen corresponding path program 1 times [2018-10-13 14:39:41,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:39:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:39:41,575 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 14:39:41,908 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 27 [2018-10-13 14:39:42,040 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 29 [2018-10-13 14:39:42,270 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 31 [2018-10-13 14:39:42,560 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 36 [2018-10-13 14:39:42,997 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 48 [2018-10-13 14:39:43,588 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 65 [2018-10-13 14:39:44,253 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2018-10-13 14:39:45,187 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 81 [2018-10-13 14:39:46,506 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 372 DAG size of output: 102 [2018-10-13 14:39:47,073 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 64 [2018-10-13 14:39:47,726 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 71 [2018-10-13 14:39:48,299 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 61 [2018-10-13 14:39:48,896 WARN L178 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 390 DAG size of output: 63 [2018-10-13 14:39:49,536 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 396 DAG size of output: 70 [2018-10-13 14:39:50,262 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 67 [2018-10-13 14:39:50,892 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 390 DAG size of output: 64 [2018-10-13 14:39:51,702 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 397 DAG size of output: 56 [2018-10-13 14:39:52,503 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 55 [2018-10-13 14:39:53,175 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 49 [2018-10-13 14:39:53,835 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 47 [2018-10-13 14:39:54,425 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 46 [2018-10-13 14:39:54,867 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 42 [2018-10-13 14:39:55,501 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 40 [2018-10-13 14:39:56,024 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 36 [2018-10-13 14:39:56,459 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 34 [2018-10-13 14:39:56,708 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 31 [2018-10-13 14:39:56,935 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 27 [2018-10-13 14:39:57,218 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 27 [2018-10-13 14:39:57,513 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 21 [2018-10-13 14:39:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:39:57,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:39:57,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-13 14:39:57,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-13 14:39:57,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-13 14:39:57,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 14:39:57,877 INFO L87 Difference]: Start difference. First operand 4207 states and 44968 transitions. Second operand 41 states. [2018-10-13 14:39:58,680 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2018-10-13 14:39:58,856 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2018-10-13 14:39:59,061 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 52 [2018-10-13 14:39:59,294 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2018-10-13 14:39:59,864 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2018-10-13 14:40:00,122 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2018-10-13 14:40:00,406 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2018-10-13 14:40:00,740 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2018-10-13 14:40:00,990 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2018-10-13 14:40:01,280 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2018-10-13 14:40:01,538 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2018-10-13 14:40:01,827 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2018-10-13 14:40:02,067 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 59 [2018-10-13 14:40:02,356 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2018-10-13 14:40:02,619 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2018-10-13 14:40:02,906 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2018-10-13 14:40:03,148 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 60 [2018-10-13 14:40:03,407 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 62 [2018-10-13 14:40:03,712 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2018-10-13 14:40:04,346 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2018-10-13 14:40:04,645 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 71 [2018-10-13 14:40:04,932 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2018-10-13 14:40:05,230 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2018-10-13 14:40:05,490 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2018-10-13 14:40:05,739 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 65 [2018-10-13 14:40:06,153 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2018-10-13 14:40:06,529 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 66 [2018-10-13 14:40:06,850 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2018-10-13 14:40:07,280 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2018-10-13 14:40:07,696 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2018-10-13 14:40:08,035 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2018-10-13 14:40:08,339 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 63 [2018-10-13 14:40:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:40:10,260 INFO L93 Difference]: Finished difference Result 11461 states and 117880 transitions. [2018-10-13 14:40:10,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-13 14:40:10,261 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 47 [2018-10-13 14:40:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:40:10,311 INFO L225 Difference]: With dead ends: 11461 [2018-10-13 14:40:10,311 INFO L226 Difference]: Without dead ends: 11461 [2018-10-13 14:40:10,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=1760, Invalid=4092, Unknown=0, NotChecked=0, Total=5852 [2018-10-13 14:40:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11461 states. [2018-10-13 14:40:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11461 to 4739. [2018-10-13 14:40:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4739 states. [2018-10-13 14:40:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 50834 transitions. [2018-10-13 14:40:10,501 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 50834 transitions. Word has length 47 [2018-10-13 14:40:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:40:10,502 INFO L481 AbstractCegarLoop]: Abstraction has 4739 states and 50834 transitions. [2018-10-13 14:40:10,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-13 14:40:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 50834 transitions. [2018-10-13 14:40:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:40:10,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:40:10,504 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:40:10,505 INFO L424 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:40:10,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:40:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1051348124, now seen corresponding path program 1 times [2018-10-13 14:40:10,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:40:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:40:11,164 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2018-10-13 14:40:11,341 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2018-10-13 14:40:11,550 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2018-10-13 14:40:11,940 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2018-10-13 14:40:12,350 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 75 [2018-10-13 14:40:13,009 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 85 [2018-10-13 14:40:13,864 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 94 [2018-10-13 14:40:14,911 WARN L178 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 107 [2018-10-13 14:40:16,209 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 318 DAG size of output: 125 [2018-10-13 14:40:16,997 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 115 [2018-10-13 14:40:17,800 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 96 [2018-10-13 14:40:18,443 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 109 [2018-10-13 14:40:19,080 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 106 [2018-10-13 14:40:19,919 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 103 [2018-10-13 14:40:20,778 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 101 [2018-10-13 14:40:21,625 WARN L178 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 98 [2018-10-13 14:40:22,234 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 94 [2018-10-13 14:40:23,015 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 92 [2018-10-13 14:40:23,856 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 74 [2018-10-13 14:40:24,460 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 69 [2018-10-13 14:40:25,045 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 63 [2018-10-13 14:40:25,547 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 53 [2018-10-13 14:40:25,965 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 43 [2018-10-13 14:40:26,390 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 44 [2018-10-13 14:40:26,696 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 36 [2018-10-13 14:40:27,041 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 36 [2018-10-13 14:40:27,300 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2018-10-13 14:40:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:40:27,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:40:27,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-13 14:40:27,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-13 14:40:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-13 14:40:27,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1461, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 14:40:27,781 INFO L87 Difference]: Start difference. First operand 4739 states and 50834 transitions. Second operand 40 states. [2018-10-13 14:40:28,837 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-13 14:40:29,100 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2018-10-13 14:40:29,398 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2018-10-13 14:40:29,889 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 89 [2018-10-13 14:40:30,477 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2018-10-13 14:40:31,074 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 104 [2018-10-13 14:40:31,859 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 122 [2018-10-13 14:40:32,698 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 130 [2018-10-13 14:40:33,587 WARN L178 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 136 [2018-10-13 14:40:34,570 WARN L178 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 140 [2018-10-13 14:40:36,181 WARN L178 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 148 [2018-10-13 14:40:37,256 WARN L178 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 144 [2018-10-13 14:40:38,348 WARN L178 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 147 [2018-10-13 14:40:39,419 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 148 [2018-10-13 14:40:40,458 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 146 [2018-10-13 14:40:41,590 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 150 [2018-10-13 14:40:42,691 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 147 [2018-10-13 14:40:43,835 WARN L178 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 146 [2018-10-13 14:40:44,889 WARN L178 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 146 [2018-10-13 14:40:45,822 WARN L178 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 142 [2018-10-13 14:40:46,930 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 149 [2018-10-13 14:40:48,058 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 148 [2018-10-13 14:40:49,092 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 143 [2018-10-13 14:40:50,192 WARN L178 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 144 [2018-10-13 14:40:51,376 WARN L178 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 148 [2018-10-13 14:40:53,126 WARN L178 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 151 [2018-10-13 14:40:54,248 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 147 [2018-10-13 14:40:55,339 WARN L178 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 146 [2018-10-13 14:40:56,458 WARN L178 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 145 [2018-10-13 14:40:57,511 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 147 [2018-10-13 14:40:58,554 WARN L178 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 144 [2018-10-13 14:40:59,856 WARN L178 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 151 [2018-10-13 14:41:01,016 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 149 [2018-10-13 14:41:02,201 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 144 [2018-10-13 14:41:03,554 WARN L178 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 149 [2018-10-13 14:41:04,704 WARN L178 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 149 [2018-10-13 14:41:06,174 WARN L178 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 146 [2018-10-13 14:41:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:41:09,300 INFO L93 Difference]: Finished difference Result 11715 states and 120764 transitions. [2018-10-13 14:41:09,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-13 14:41:09,301 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 47 [2018-10-13 14:41:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:41:09,350 INFO L225 Difference]: With dead ends: 11715 [2018-10-13 14:41:09,351 INFO L226 Difference]: Without dead ends: 11715 [2018-10-13 14:41:09,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=2084, Invalid=5056, Unknown=0, NotChecked=0, Total=7140 [2018-10-13 14:41:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11715 states. [2018-10-13 14:41:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11715 to 4891. [2018-10-13 14:41:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4891 states. [2018-10-13 14:41:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 52515 transitions. [2018-10-13 14:41:09,544 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 52515 transitions. Word has length 47 [2018-10-13 14:41:09,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:41:09,544 INFO L481 AbstractCegarLoop]: Abstraction has 4891 states and 52515 transitions. [2018-10-13 14:41:09,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-13 14:41:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 52515 transitions. [2018-10-13 14:41:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:41:09,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:41:09,547 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] [2018-10-13 14:41:09,547 INFO L424 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:41:09,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:41:09,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1048927237, now seen corresponding path program 1 times [2018-10-13 14:41:09,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:41:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:41:10,018 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2018-10-13 14:41:10,161 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2018-10-13 14:41:10,298 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2018-10-13 14:41:10,475 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2018-10-13 14:41:10,645 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2018-10-13 14:41:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:41:12,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:41:12,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-13 14:41:12,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-13 14:41:12,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-13 14:41:12,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 14:41:12,148 INFO L87 Difference]: Start difference. First operand 4891 states and 52515 transitions. Second operand 36 states. [2018-10-13 14:41:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:41:14,176 INFO L93 Difference]: Finished difference Result 5504 states and 57764 transitions. [2018-10-13 14:41:14,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 14:41:14,176 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 47 [2018-10-13 14:41:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:41:14,199 INFO L225 Difference]: With dead ends: 5504 [2018-10-13 14:41:14,199 INFO L226 Difference]: Without dead ends: 5504 [2018-10-13 14:41:14,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:41:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2018-10-13 14:41:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5198. [2018-10-13 14:41:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5198 states. [2018-10-13 14:41:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 55871 transitions. [2018-10-13 14:41:14,332 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 55871 transitions. Word has length 47 [2018-10-13 14:41:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:41:14,332 INFO L481 AbstractCegarLoop]: Abstraction has 5198 states and 55871 transitions. [2018-10-13 14:41:14,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-13 14:41:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 55871 transitions. [2018-10-13 14:41:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:41:14,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:41:14,335 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:41:14,335 INFO L424 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:41:14,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:41:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1106797824, now seen corresponding path program 1 times [2018-10-13 14:41:14,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:41:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:41:15,443 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 58 [2018-10-13 14:41:15,727 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 70 [2018-10-13 14:41:16,104 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 80 [2018-10-13 14:41:16,592 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 95 [2018-10-13 14:41:17,232 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 107 [2018-10-13 14:41:18,062 WARN L178 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 112 [2018-10-13 14:41:18,458 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 73 [2018-10-13 14:41:18,880 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 75 [2018-10-13 14:41:19,410 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 92 [2018-10-13 14:41:19,918 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 88 [2018-10-13 14:41:20,415 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 85 [2018-10-13 14:41:20,913 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 82 [2018-10-13 14:41:21,390 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 71 [2018-10-13 14:41:21,833 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 67 [2018-10-13 14:41:22,256 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 65 [2018-10-13 14:41:22,826 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 62 [2018-10-13 14:41:23,247 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 59 [2018-10-13 14:41:23,654 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 40 [2018-10-13 14:41:23,980 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 36 [2018-10-13 14:41:24,353 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2018-10-13 14:41:24,639 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2018-10-13 14:41:24,820 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 30 [2018-10-13 14:41:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 14:41:25,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:41:25,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:41:25,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:41:25,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:41:25,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:41:25,438 INFO L87 Difference]: Start difference. First operand 5198 states and 55871 transitions. Second operand 42 states. [2018-10-13 14:41:26,830 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2018-10-13 14:41:27,254 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 81 [2018-10-13 14:41:27,787 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 93 [2018-10-13 14:41:28,342 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 97 [2018-10-13 14:41:29,476 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 100 [2018-10-13 14:41:30,060 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 109 [2018-10-13 14:41:30,727 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 100 [2018-10-13 14:41:31,521 WARN L178 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 105 [2018-10-13 14:41:32,175 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 99 [2018-10-13 14:41:32,907 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 104 [2018-10-13 14:41:33,552 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 99 [2018-10-13 14:41:34,258 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 100 [2018-10-13 14:41:34,995 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 103 [2018-10-13 14:41:35,560 WARN L178 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 101 [2018-10-13 14:41:36,299 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 103 [2018-10-13 14:41:36,861 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 100 [2018-10-13 14:41:37,425 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 100 [2018-10-13 14:41:38,211 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 102 [2018-10-13 14:41:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:41:43,414 INFO L93 Difference]: Finished difference Result 12041 states and 122847 transitions. [2018-10-13 14:41:43,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-13 14:41:43,415 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2018-10-13 14:41:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:41:43,467 INFO L225 Difference]: With dead ends: 12041 [2018-10-13 14:41:43,467 INFO L226 Difference]: Without dead ends: 12041 [2018-10-13 14:41:43,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=1090, Invalid=3466, Unknown=0, NotChecked=0, Total=4556 [2018-10-13 14:41:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12041 states. [2018-10-13 14:41:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12041 to 5218. [2018-10-13 14:41:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5218 states. [2018-10-13 14:41:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 56091 transitions. [2018-10-13 14:41:43,670 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 56091 transitions. Word has length 47 [2018-10-13 14:41:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:41:43,670 INFO L481 AbstractCegarLoop]: Abstraction has 5218 states and 56091 transitions. [2018-10-13 14:41:43,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:41:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 56091 transitions. [2018-10-13 14:41:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:41:43,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:41:43,673 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:41:43,673 INFO L424 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:41:43,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:41:43,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1106767072, now seen corresponding path program 1 times [2018-10-13 14:41:43,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:41:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:41:44,229 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2018-10-13 14:41:44,404 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2018-10-13 14:41:44,556 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2018-10-13 14:41:44,871 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-13 14:41:45,190 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 64 [2018-10-13 14:41:45,593 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 68 [2018-10-13 14:41:46,123 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 92 [2018-10-13 14:41:46,799 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 104 [2018-10-13 14:41:47,679 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 115 [2018-10-13 14:41:48,316 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 106 [2018-10-13 14:41:49,093 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 125 [2018-10-13 14:41:49,697 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 107 [2018-10-13 14:41:50,324 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 111 [2018-10-13 14:41:50,971 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 115 [2018-10-13 14:41:51,611 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 112 [2018-10-13 14:41:52,256 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 109 [2018-10-13 14:41:52,926 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2018-10-13 14:41:53,492 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 79 [2018-10-13 14:41:54,050 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 76 [2018-10-13 14:41:54,588 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2018-10-13 14:41:55,067 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 70 [2018-10-13 14:41:55,610 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 66 [2018-10-13 14:41:55,946 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 40 [2018-10-13 14:41:56,353 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 37 [2018-10-13 14:41:56,698 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2018-10-13 14:41:56,960 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 29 [2018-10-13 14:41:57,171 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 26 [2018-10-13 14:41:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 14:41:57,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:41:57,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:41:57,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:41:57,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:41:57,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1584, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:41:57,817 INFO L87 Difference]: Start difference. First operand 5218 states and 56091 transitions. Second operand 42 states. [2018-10-13 14:41:58,602 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-13 14:41:58,808 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-13 14:41:59,098 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-10-13 14:41:59,411 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2018-10-13 14:41:59,771 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2018-10-13 14:42:00,161 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 80 [2018-10-13 14:42:00,656 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 83 [2018-10-13 14:42:01,201 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 93 [2018-10-13 14:42:01,909 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 98 [2018-10-13 14:42:03,155 WARN L178 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 109 [2018-10-13 14:42:03,991 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 107 [2018-10-13 14:42:04,836 WARN L178 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 106 [2018-10-13 14:42:05,631 WARN L178 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 104 [2018-10-13 14:42:06,407 WARN L178 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 103 [2018-10-13 14:42:07,269 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 102 [2018-10-13 14:42:08,123 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 108 [2018-10-13 14:42:08,905 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 102 [2018-10-13 14:42:09,637 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 101 [2018-10-13 14:42:10,502 WARN L178 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 107 [2018-10-13 14:42:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:42:14,095 INFO L93 Difference]: Finished difference Result 10069 states and 103620 transitions. [2018-10-13 14:42:14,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-13 14:42:14,096 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2018-10-13 14:42:14,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:42:14,138 INFO L225 Difference]: With dead ends: 10069 [2018-10-13 14:42:14,139 INFO L226 Difference]: Without dead ends: 10069 [2018-10-13 14:42:14,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=1019, Invalid=3403, Unknown=0, NotChecked=0, Total=4422 [2018-10-13 14:42:14,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2018-10-13 14:42:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 5492. [2018-10-13 14:42:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5492 states. [2018-10-13 14:42:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 59105 transitions. [2018-10-13 14:42:14,347 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 59105 transitions. Word has length 47 [2018-10-13 14:42:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:42:14,347 INFO L481 AbstractCegarLoop]: Abstraction has 5492 states and 59105 transitions. [2018-10-13 14:42:14,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:42:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 59105 transitions. [2018-10-13 14:42:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:42:14,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:42:14,350 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:42:14,350 INFO L424 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:42:14,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:42:14,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1106790136, now seen corresponding path program 1 times [2018-10-13 14:42:14,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:42:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:42:15,390 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 50 [2018-10-13 14:42:15,572 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2018-10-13 14:42:15,717 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 58 [2018-10-13 14:42:15,995 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 61 [2018-10-13 14:42:16,349 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2018-10-13 14:42:16,575 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2018-10-13 14:42:16,802 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2018-10-13 14:42:17,026 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 95 [2018-10-13 14:42:17,190 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2018-10-13 14:42:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 14:42:18,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:42:18,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:42:18,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:42:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:42:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:42:18,866 INFO L87 Difference]: Start difference. First operand 5492 states and 59105 transitions. Second operand 42 states. [2018-10-13 14:42:20,603 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2018-10-13 14:42:21,072 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2018-10-13 14:42:21,491 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2018-10-13 14:42:22,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:42:22,475 INFO L93 Difference]: Finished difference Result 7711 states and 82169 transitions. [2018-10-13 14:42:22,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 14:42:22,475 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2018-10-13 14:42:22,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:42:22,508 INFO L225 Difference]: With dead ends: 7711 [2018-10-13 14:42:22,508 INFO L226 Difference]: Without dead ends: 7711 [2018-10-13 14:42:22,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=798, Invalid=3108, Unknown=0, NotChecked=0, Total=3906 [2018-10-13 14:42:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7711 states. [2018-10-13 14:42:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7711 to 6842. [2018-10-13 14:42:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6842 states. [2018-10-13 14:42:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6842 states to 6842 states and 74013 transitions. [2018-10-13 14:42:22,704 INFO L78 Accepts]: Start accepts. Automaton has 6842 states and 74013 transitions. Word has length 47 [2018-10-13 14:42:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:42:22,704 INFO L481 AbstractCegarLoop]: Abstraction has 6842 states and 74013 transitions. [2018-10-13 14:42:22,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:42:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6842 states and 74013 transitions. [2018-10-13 14:42:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:42:22,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:42:22,707 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] [2018-10-13 14:42:22,707 INFO L424 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:42:22,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:42:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1104338497, now seen corresponding path program 1 times [2018-10-13 14:42:22,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:42:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:42:24,122 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-13 14:42:24,279 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-13 14:42:24,429 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-13 14:42:24,581 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-13 14:42:24,728 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2018-10-13 14:42:24,872 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-13 14:42:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:42:26,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:42:26,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2018-10-13 14:42:26,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-13 14:42:26,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-13 14:42:26,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1369, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 14:42:26,195 INFO L87 Difference]: Start difference. First operand 6842 states and 74013 transitions. Second operand 41 states. [2018-10-13 14:42:27,882 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-13 14:42:28,094 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-13 14:42:28,330 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-13 14:42:28,751 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2018-10-13 14:42:29,102 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-13 14:42:29,408 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-13 14:42:29,633 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-13 14:42:30,020 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-13 14:42:30,311 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-13 14:42:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:42:31,450 INFO L93 Difference]: Finished difference Result 8490 states and 90663 transitions. [2018-10-13 14:42:31,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 14:42:31,450 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 47 [2018-10-13 14:42:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:42:31,484 INFO L225 Difference]: With dead ends: 8490 [2018-10-13 14:42:31,485 INFO L226 Difference]: Without dead ends: 8490 [2018-10-13 14:42:31,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=988, Invalid=3172, Unknown=0, NotChecked=0, Total=4160 [2018-10-13 14:42:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2018-10-13 14:42:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 8158. [2018-10-13 14:42:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8158 states. [2018-10-13 14:42:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 88515 transitions. [2018-10-13 14:42:31,687 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 88515 transitions. Word has length 47 [2018-10-13 14:42:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:42:31,687 INFO L481 AbstractCegarLoop]: Abstraction has 8158 states and 88515 transitions. [2018-10-13 14:42:31,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-13 14:42:31,687 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 88515 transitions. [2018-10-13 14:42:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:42:31,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:42:31,690 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] [2018-10-13 14:42:31,690 INFO L424 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:42:31,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:42:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1096950329, now seen corresponding path program 1 times [2018-10-13 14:42:31,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:42:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:42:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 14:42:33,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:42:33,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2018-10-13 14:42:33,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-13 14:42:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-13 14:42:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 14:42:33,480 INFO L87 Difference]: Start difference. First operand 8158 states and 88515 transitions. Second operand 38 states. [2018-10-13 14:42:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:42:36,904 INFO L93 Difference]: Finished difference Result 10557 states and 110916 transitions. [2018-10-13 14:42:36,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 14:42:36,904 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 47 [2018-10-13 14:42:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:42:36,949 INFO L225 Difference]: With dead ends: 10557 [2018-10-13 14:42:36,949 INFO L226 Difference]: Without dead ends: 10557 [2018-10-13 14:42:36,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=698, Invalid=2382, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 14:42:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10557 states. [2018-10-13 14:42:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10557 to 8540. [2018-10-13 14:42:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8540 states. [2018-10-13 14:42:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8540 states to 8540 states and 92717 transitions. [2018-10-13 14:42:37,193 INFO L78 Accepts]: Start accepts. Automaton has 8540 states and 92717 transitions. Word has length 47 [2018-10-13 14:42:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:42:37,193 INFO L481 AbstractCegarLoop]: Abstraction has 8540 states and 92717 transitions. [2018-10-13 14:42:37,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-13 14:42:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8540 states and 92717 transitions. [2018-10-13 14:42:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-13 14:42:37,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:42:37,197 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] [2018-10-13 14:42:37,197 INFO L424 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:42:37,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:42:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1288627550, now seen corresponding path program 1 times [2018-10-13 14:42:37,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:42:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:42:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:42:38,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 14:42:38,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2018-10-13 14:42:38,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 14:42:38,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 14:42:38,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2018-10-13 14:42:38,314 INFO L87 Difference]: Start difference. First operand 8540 states and 92717 transitions. Second operand 32 states. [2018-10-13 14:42:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:42:40,244 INFO L93 Difference]: Finished difference Result 8793 states and 94651 transitions. [2018-10-13 14:42:40,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 14:42:40,245 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 47 [2018-10-13 14:42:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:42:40,282 INFO L225 Difference]: With dead ends: 8793 [2018-10-13 14:42:40,283 INFO L226 Difference]: Without dead ends: 8793 [2018-10-13 14:42:40,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=492, Invalid=1578, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 14:42:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8793 states. [2018-10-13 14:42:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8793 to 8626. [2018-10-13 14:42:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8626 states. [2018-10-13 14:42:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8626 states to 8626 states and 93612 transitions. [2018-10-13 14:42:40,515 INFO L78 Accepts]: Start accepts. Automaton has 8626 states and 93612 transitions. Word has length 47 [2018-10-13 14:42:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:42:40,516 INFO L481 AbstractCegarLoop]: Abstraction has 8626 states and 93612 transitions. [2018-10-13 14:42:40,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 14:42:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8626 states and 93612 transitions. [2018-10-13 14:42:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-13 14:42:40,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:42:40,520 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] [2018-10-13 14:42:40,520 INFO L424 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:42:40,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:42:40,520 INFO L82 PathProgramCache]: Analyzing trace with hash 583311541, now seen corresponding path program 1 times [2018-10-13 14:42:40,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:42:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:42:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:42:41,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:42:41,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 14:42:41,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 14:42:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 14:42:41,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 14:42:41,873 INFO L87 Difference]: Start difference. First operand 8626 states and 93612 transitions. Second operand 35 states. [2018-10-13 14:42:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:42:44,600 INFO L93 Difference]: Finished difference Result 10202 states and 109300 transitions. [2018-10-13 14:42:44,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 14:42:44,600 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 48 [2018-10-13 14:42:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:42:44,645 INFO L225 Difference]: With dead ends: 10202 [2018-10-13 14:42:44,645 INFO L226 Difference]: Without dead ends: 10202 [2018-10-13 14:42:44,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=718, Invalid=2144, Unknown=0, NotChecked=0, Total=2862 [2018-10-13 14:42:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2018-10-13 14:42:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 9922. [2018-10-13 14:42:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9922 states. [2018-10-13 14:42:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9922 states to 9922 states and 107797 transitions. [2018-10-13 14:42:45,098 INFO L78 Accepts]: Start accepts. Automaton has 9922 states and 107797 transitions. Word has length 48 [2018-10-13 14:42:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:42:45,098 INFO L481 AbstractCegarLoop]: Abstraction has 9922 states and 107797 transitions. [2018-10-13 14:42:45,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 14:42:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9922 states and 107797 transitions. [2018-10-13 14:42:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-13 14:42:45,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:42:45,102 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:42:45,102 INFO L424 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:42:45,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:42:45,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1423722587, now seen corresponding path program 1 times [2018-10-13 14:42:45,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:42:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:42:45,689 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2018-10-13 14:42:45,837 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 35 [2018-10-13 14:42:46,044 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 38 [2018-10-13 14:42:46,311 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 42 [2018-10-13 14:42:46,530 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 46 [2018-10-13 14:42:47,021 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 49 [2018-10-13 14:42:47,547 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 52 [2018-10-13 14:42:47,897 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 54 [2018-10-13 14:42:48,328 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 60 [2018-10-13 14:42:48,943 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 66 [2018-10-13 14:42:49,563 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 65 [2018-10-13 14:42:50,186 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 70 [2018-10-13 14:42:50,845 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 123 [2018-10-13 14:42:51,503 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 120 [2018-10-13 14:42:52,162 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 117 [2018-10-13 14:42:53,436 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 255 DAG size of output: 116 [2018-10-13 14:42:54,181 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 95 [2018-10-13 14:42:54,466 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-13 14:42:54,646 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2018-10-13 14:42:54,854 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 49 [2018-10-13 14:42:55,105 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-13 14:42:55,483 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 40 [2018-10-13 14:42:55,679 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2018-10-13 14:42:56,044 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2018-10-13 14:42:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:42:56,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:42:56,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:42:56,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:42:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:42:56,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:42:56,516 INFO L87 Difference]: Start difference. First operand 9922 states and 107797 transitions. Second operand 42 states. [2018-10-13 14:42:58,257 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-13 14:42:58,656 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2018-10-13 14:42:59,325 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 104 [2018-10-13 14:42:59,768 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 84 [2018-10-13 14:43:00,413 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 84 [2018-10-13 14:43:00,864 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 80 [2018-10-13 14:43:01,281 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 79 [2018-10-13 14:43:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:43:03,831 INFO L93 Difference]: Finished difference Result 12926 states and 137078 transitions. [2018-10-13 14:43:03,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 14:43:03,832 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 48 [2018-10-13 14:43:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:43:03,889 INFO L225 Difference]: With dead ends: 12926 [2018-10-13 14:43:03,890 INFO L226 Difference]: Without dead ends: 12926 [2018-10-13 14:43:03,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=815, Invalid=3091, Unknown=0, NotChecked=0, Total=3906 [2018-10-13 14:43:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12926 states. [2018-10-13 14:43:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12926 to 11142. [2018-10-13 14:43:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11142 states. [2018-10-13 14:43:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11142 states to 11142 states and 121216 transitions. [2018-10-13 14:43:04,214 INFO L78 Accepts]: Start accepts. Automaton has 11142 states and 121216 transitions. Word has length 48 [2018-10-13 14:43:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:43:04,214 INFO L481 AbstractCegarLoop]: Abstraction has 11142 states and 121216 transitions. [2018-10-13 14:43:04,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:43:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 11142 states and 121216 transitions. [2018-10-13 14:43:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-13 14:43:04,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:43:04,218 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:43:04,218 INFO L424 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:43:04,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:43:04,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1423722835, now seen corresponding path program 1 times [2018-10-13 14:43:04,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:43:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:43:05,169 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2018-10-13 14:43:05,411 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 61 [2018-10-13 14:43:05,801 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 79 [2018-10-13 14:43:06,425 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 90 [2018-10-13 14:43:07,149 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 101 [2018-10-13 14:43:08,042 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 126 [2018-10-13 14:43:09,085 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 140 [2018-10-13 14:43:10,746 WARN L178 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 359 DAG size of output: 173 [2018-10-13 14:43:12,391 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 385 DAG size of output: 182 [2018-10-13 14:43:13,690 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 398 DAG size of output: 158 [2018-10-13 14:43:15,197 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 411 DAG size of output: 166 [2018-10-13 14:43:16,873 WARN L178 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 430 DAG size of output: 173 [2018-10-13 14:43:18,530 WARN L178 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 437 DAG size of output: 181 [2018-10-13 14:43:20,169 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 434 DAG size of output: 178 [2018-10-13 14:43:21,985 WARN L178 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 430 DAG size of output: 177 [2018-10-13 14:43:23,445 WARN L178 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 435 DAG size of output: 139 [2018-10-13 14:43:25,062 WARN L178 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 428 DAG size of output: 134 [2018-10-13 14:43:26,574 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 406 DAG size of output: 132 [2018-10-13 14:43:27,960 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 345 DAG size of output: 119 [2018-10-13 14:43:29,348 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 327 DAG size of output: 123 [2018-10-13 14:43:30,835 WARN L178 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 279 DAG size of output: 118 [2018-10-13 14:43:31,926 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 95 [2018-10-13 14:43:32,853 WARN L178 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 86 [2018-10-13 14:43:33,660 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 76 [2018-10-13 14:43:34,342 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 83 [2018-10-13 14:43:35,065 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 59 [2018-10-13 14:43:35,564 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 53 [2018-10-13 14:43:35,906 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 34 [2018-10-13 14:43:36,278 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 35 [2018-10-13 14:43:36,609 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2018-10-13 14:43:36,845 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 22 [2018-10-13 14:43:37,069 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2018-10-13 14:43:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:43:37,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:43:37,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-13 14:43:37,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-13 14:43:37,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-13 14:43:37,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1780, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 14:43:37,375 INFO L87 Difference]: Start difference. First operand 11142 states and 121216 transitions. Second operand 44 states. [2018-10-13 14:43:38,588 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2018-10-13 14:43:38,886 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2018-10-13 14:43:39,265 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 55 [2018-10-13 14:43:39,704 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 63 [2018-10-13 14:43:40,276 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 71 [2018-10-13 14:43:41,027 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 78 [2018-10-13 14:43:42,031 WARN L178 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 103 [2018-10-13 14:43:43,261 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 279 DAG size of output: 128 [2018-10-13 14:43:44,734 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 324 DAG size of output: 141 [2018-10-13 14:43:46,520 WARN L178 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 357 DAG size of output: 157 [2018-10-13 14:43:48,474 WARN L178 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 393 DAG size of output: 163 [2018-10-13 14:43:50,648 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 544 DAG size of output: 163 [2018-10-13 14:43:53,902 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 523 DAG size of output: 175 [2018-10-13 14:43:56,283 WARN L178 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 429 DAG size of output: 177 [2018-10-13 14:43:58,832 WARN L178 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 528 DAG size of output: 177 [2018-10-13 14:44:01,261 WARN L178 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 527 DAG size of output: 176 [2018-10-13 14:44:03,324 WARN L178 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 404 DAG size of output: 171 [2018-10-13 14:44:05,670 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 475 DAG size of output: 177 [2018-10-13 14:44:08,106 WARN L178 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 532 DAG size of output: 176 [2018-10-13 14:44:10,545 WARN L178 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 491 DAG size of output: 173 [2018-10-13 14:44:12,854 WARN L178 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 536 DAG size of output: 171 [2018-10-13 14:44:15,289 WARN L178 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 539 DAG size of output: 167 [2018-10-13 14:44:17,515 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 541 DAG size of output: 165 [2018-10-13 14:44:19,763 WARN L178 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 401 DAG size of output: 177 [2018-10-13 14:44:22,050 WARN L178 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 515 DAG size of output: 170 [2018-10-13 14:44:24,632 WARN L178 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 529 DAG size of output: 178 [2018-10-13 14:44:27,004 WARN L178 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 493 DAG size of output: 175 [2018-10-13 14:44:29,388 WARN L178 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 538 DAG size of output: 173 [2018-10-13 14:44:31,678 WARN L178 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 543 DAG size of output: 167 [2018-10-13 14:44:34,835 WARN L178 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 403 DAG size of output: 179 [2018-10-13 14:44:37,257 WARN L178 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 517 DAG size of output: 172 [2018-10-13 14:44:39,783 WARN L178 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 435 DAG size of output: 180 [2018-10-13 14:44:42,149 WARN L178 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 520 DAG size of output: 169 [2018-10-13 14:44:44,551 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 477 DAG size of output: 178 [2018-10-13 14:44:47,073 WARN L178 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 522 DAG size of output: 171 [2018-10-13 14:44:49,869 WARN L178 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 427 DAG size of output: 175 [2018-10-13 14:44:52,882 WARN L178 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 526 DAG size of output: 175 [2018-10-13 14:44:55,692 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 473 DAG size of output: 175 [2018-10-13 14:44:58,714 WARN L178 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 398 DAG size of output: 168 [2018-10-13 14:45:01,517 WARN L178 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 530 DAG size of output: 174 [2018-10-13 14:45:04,743 WARN L178 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 537 DAG size of output: 165 [2018-10-13 14:45:10,995 WARN L178 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 495 DAG size of output: 176 [2018-10-13 14:45:13,106 WARN L178 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 547 DAG size of output: 150 [2018-10-13 14:45:15,537 WARN L178 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 529 DAG size of output: 181 [2018-10-13 14:45:18,239 WARN L178 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 530 DAG size of output: 178 [2018-10-13 14:45:20,702 WARN L178 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 533 DAG size of output: 176 [2018-10-13 14:45:22,966 WARN L178 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 540 DAG size of output: 162 [2018-10-13 14:45:25,241 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 544 DAG size of output: 164 [2018-10-13 14:45:28,680 WARN L178 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 539 DAG size of output: 168 [2018-10-13 14:45:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:45:29,070 INFO L93 Difference]: Finished difference Result 21508 states and 225911 transitions. [2018-10-13 14:45:29,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-13 14:45:29,071 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 48 [2018-10-13 14:45:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:45:29,162 INFO L225 Difference]: With dead ends: 21508 [2018-10-13 14:45:29,372 INFO L226 Difference]: Without dead ends: 21508 [2018-10-13 14:45:29,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 130.0s TimeCoverageRelationStatistics Valid=2900, Invalid=6606, Unknown=0, NotChecked=0, Total=9506 [2018-10-13 14:45:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21508 states. [2018-10-13 14:45:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21508 to 12304. [2018-10-13 14:45:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12304 states. [2018-10-13 14:45:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 133998 transitions. [2018-10-13 14:45:29,742 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 133998 transitions. Word has length 48 [2018-10-13 14:45:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:45:29,743 INFO L481 AbstractCegarLoop]: Abstraction has 12304 states and 133998 transitions. [2018-10-13 14:45:29,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-13 14:45:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 133998 transitions. [2018-10-13 14:45:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-13 14:45:29,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:45:29,746 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:45:29,747 INFO L424 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:45:29,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:45:29,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1423723021, now seen corresponding path program 1 times [2018-10-13 14:45:29,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:45:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:45:30,337 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2018-10-13 14:45:30,470 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 39 [2018-10-13 14:45:30,654 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 43 [2018-10-13 14:45:30,865 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 47 [2018-10-13 14:45:31,091 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 51 [2018-10-13 14:45:31,346 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2018-10-13 14:45:31,475 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-13 14:45:31,625 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 58 [2018-10-13 14:45:31,777 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 61 [2018-10-13 14:45:31,939 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2018-10-13 14:45:32,093 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 62 [2018-10-13 14:45:32,255 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2018-10-13 14:45:32,413 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 63 [2018-10-13 14:45:32,572 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2018-10-13 14:45:32,718 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-13 14:45:32,866 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-13 14:45:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:45:33,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:45:33,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-13 14:45:33,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-13 14:45:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-13 14:45:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 14:45:33,870 INFO L87 Difference]: Start difference. First operand 12304 states and 133998 transitions. Second operand 42 states. [2018-10-13 14:45:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:45:35,717 INFO L93 Difference]: Finished difference Result 12509 states and 135582 transitions. [2018-10-13 14:45:35,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 14:45:35,718 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 48 [2018-10-13 14:45:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:45:35,773 INFO L225 Difference]: With dead ends: 12509 [2018-10-13 14:45:35,773 INFO L226 Difference]: Without dead ends: 12509 [2018-10-13 14:45:35,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=568, Invalid=1882, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 14:45:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2018-10-13 14:45:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 5580. [2018-10-13 14:45:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5580 states. [2018-10-13 14:45:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 59927 transitions. [2018-10-13 14:45:35,980 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 59927 transitions. Word has length 48 [2018-10-13 14:45:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:45:35,981 INFO L481 AbstractCegarLoop]: Abstraction has 5580 states and 59927 transitions. [2018-10-13 14:45:35,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-13 14:45:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 59927 transitions. [2018-10-13 14:45:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-13 14:45:35,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:45:35,985 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:45:35,985 INFO L424 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:45:35,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:45:35,985 INFO L82 PathProgramCache]: Analyzing trace with hash 620874020, now seen corresponding path program 1 times [2018-10-13 14:45:35,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:45:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:45:36,719 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-13 14:45:36,926 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-13 14:45:37,123 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-13 14:45:37,315 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-13 14:45:37,500 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-13 14:45:37,680 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2018-10-13 14:45:37,853 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-13 14:45:38,024 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-10-13 14:45:38,190 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-10-13 14:45:38,347 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2018-10-13 14:45:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:45:39,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:45:39,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-13 14:45:39,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-13 14:45:39,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-13 14:45:39,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2018-10-13 14:45:39,260 INFO L87 Difference]: Start difference. First operand 5580 states and 59927 transitions. Second operand 39 states. [2018-10-13 14:45:41,041 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-13 14:45:41,212 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2018-10-13 14:45:41,387 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2018-10-13 14:45:42,044 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-10-13 14:45:42,629 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2018-10-13 14:45:42,763 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2018-10-13 14:45:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 14:45:43,522 INFO L93 Difference]: Finished difference Result 6566 states and 67536 transitions. [2018-10-13 14:45:43,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 14:45:43,523 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 48 [2018-10-13 14:45:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 14:45:43,550 INFO L225 Difference]: With dead ends: 6566 [2018-10-13 14:45:43,550 INFO L226 Difference]: Without dead ends: 6566 [2018-10-13 14:45:43,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=917, Invalid=2743, Unknown=0, NotChecked=0, Total=3660 [2018-10-13 14:45:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2018-10-13 14:45:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 5954. [2018-10-13 14:45:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5954 states. [2018-10-13 14:45:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 64092 transitions. [2018-10-13 14:45:43,715 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 64092 transitions. Word has length 48 [2018-10-13 14:45:43,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 14:45:43,715 INFO L481 AbstractCegarLoop]: Abstraction has 5954 states and 64092 transitions. [2018-10-13 14:45:43,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-13 14:45:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 64092 transitions. [2018-10-13 14:45:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-13 14:45:43,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 14:45:43,719 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-13 14:45:43,719 INFO L424 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr16ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr19ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr17ASSERT_VIOLATIONASSERT, mainErr18ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT]=== [2018-10-13 14:45:43,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 14:45:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1538475659, now seen corresponding path program 1 times [2018-10-13 14:45:43,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 14:45:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 14:45:44,686 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2018-10-13 14:45:44,900 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2018-10-13 14:45:45,150 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2018-10-13 14:45:45,421 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 71 [2018-10-13 14:45:45,761 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 84 [2018-10-13 14:45:46,082 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 80 [2018-10-13 14:45:46,421 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 83 [2018-10-13 14:45:46,806 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 88 [2018-10-13 14:45:47,171 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 85 [2018-10-13 14:45:47,518 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 80 [2018-10-13 14:45:47,869 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 75 [2018-10-13 14:45:48,243 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2018-10-13 14:45:48,605 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 72 [2018-10-13 14:45:48,966 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2018-10-13 14:45:49,329 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 66 [2018-10-13 14:45:49,713 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 64 [2018-10-13 14:45:50,278 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 61 [2018-10-13 14:45:50,675 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 59 [2018-10-13 14:45:51,041 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2018-10-13 14:45:51,376 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2018-10-13 14:45:51,721 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 51 [2018-10-13 14:45:52,079 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2018-10-13 14:45:52,364 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2018-10-13 14:45:52,678 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2018-10-13 14:45:52,954 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 25 [2018-10-13 14:45:53,148 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 17 [2018-10-13 14:45:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 14:45:53,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 14:45:53,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-13 14:45:53,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-13 14:45:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-13 14:45:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 14:45:53,526 INFO L87 Difference]: Start difference. First operand 5954 states and 64092 transitions. Second operand 45 states. [2018-10-13 14:45:54,578 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2018-10-13 14:45:54,789 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 50 [2018-10-13 14:45:55,015 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 56 [2018-10-13 14:45:55,239 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2018-10-13 14:45:55,959 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 87 [2018-10-13 14:45:56,253 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2018-10-13 14:45:56,575 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2018-10-13 14:45:56,876 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 71 [2018-10-13 14:45:57,195 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2018-10-13 14:45:57,483 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2018-10-13 14:45:57,813 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2018-10-13 14:45:58,105 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 67 [2018-10-13 14:45:58,343 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 59 [2018-10-13 14:45:58,670 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2018-10-13 14:45:58,956 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 64 [2018-10-13 14:45:59,300 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2018-10-13 14:45:59,638 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 64 [2018-10-13 14:45:59,979 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2018-10-13 14:46:00,258 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 63 [2018-10-13 14:46:00,579 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 62 [2018-10-13 14:46:00,919 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2018-10-13 14:46:01,250 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2018-10-13 14:46:01,540 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 69 [2018-10-13 14:46:01,865 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2018-10-13 14:46:02,143 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 66 [2018-10-13 14:46:02,463 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2018-10-13 14:46:02,732 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 63 [2018-10-13 14:46:03,056 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 61 [2018-10-13 14:46:03,358 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 72 [2018-10-13 14:46:03,715 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 88 [2018-10-13 14:46:04,332 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 71 [2018-10-13 14:46:04,794 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2018-10-13 14:46:05,363 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-13 14:46:05,676 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 83 [2018-10-13 14:46:05,972 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-13 14:46:06,274 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2018-10-13 14:46:06,595 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 79 [2018-10-13 14:46:06,910 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 75 [2018-10-13 14:46:07,236 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 75 [2018-10-13 14:46:07,558 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2018-10-13 14:46:07,938 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2018-10-13 14:46:08,364 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 65 [2018-10-13 14:46:08,740 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 60 [2018-10-13 14:46:09,445 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 65 [2018-10-13 14:46:09,808 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 62 [2018-10-13 14:46:10,210 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 64 [2018-10-13 14:46:10,494 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 60 [2018-10-13 14:46:10,863 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-13 14:46:11,267 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 86 [2018-10-13 14:46:11,775 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 69 [2018-10-13 14:46:12,397 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81