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-poc03-16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d80e71f [2018-10-13 13:27:49,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-13 13:27:49,566 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-13 13:27:49,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-13 13:27:49,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-13 13:27:49,579 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-13 13:27:49,580 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-13 13:27:49,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-13 13:27:49,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-13 13:27:49,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-13 13:27:49,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-13 13:27:49,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-13 13:27:49,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-13 13:27:49,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-13 13:27:49,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-13 13:27:49,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-13 13:27:49,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-13 13:27:49,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-13 13:27:49,593 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-13 13:27:49,595 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-13 13:27:49,596 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-13 13:27:49,597 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-13 13:27:49,599 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-13 13:27:49,599 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-13 13:27:49,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-13 13:27:49,601 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-13 13:27:49,602 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-13 13:27:49,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-13 13:27:49,603 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-13 13:27:49,604 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-13 13:27:49,604 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-13 13:27:49,605 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-13 13:27:49,605 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-13 13:27:49,606 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-13 13:27:49,607 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-13 13:27:49,607 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-13 13:27:49,607 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 13:27:49,617 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-13 13:27:49,620 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-13 13:27:49,621 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-13 13:27:49,621 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-13 13:27:49,621 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-13 13:27:49,621 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-13 13:27:49,622 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-13 13:27:49,622 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-13 13:27:49,622 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-13 13:27:49,623 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-13 13:27:49,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-13 13:27:49,625 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-13 13:27:49,625 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-13 13:27:49,626 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-13 13:27:49,626 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-13 13:27:49,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-13 13:27:49,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-13 13:27:49,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-13 13:27:49,695 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-13 13:27:49,695 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-13 13:27:49,696 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-16.bpl [2018-10-13 13:27:49,697 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-16.bpl' [2018-10-13 13:27:49,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-13 13:27:49,758 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-13 13:27:49,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-13 13:27:49,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-13 13:27:49,760 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-13 13:27:49,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/1) ... [2018-10-13 13:27:49,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-13 13:27:49,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-13 13:27:49,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-13 13:27:49,826 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-13 13:27:49,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (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 13:27:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-13 13:27:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-13 13:27:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-13 13:27:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-13 13:27:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-10-13 13:27:50,481 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-13 13:27:50,482 INFO L202 PluginConnector]: Adding new model speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:27:50 BoogieIcfgContainer [2018-10-13 13:27:50,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-13 13:27:50,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-13 13:27:50,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-13 13:27:50,487 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-13 13:27:50,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.10 01:27:49" (1/2) ... [2018-10-13 13:27:50,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd5b29e and model type speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:27:50, skipping insertion in model container [2018-10-13 13:27:50,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc03-16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:27:50" (2/2) ... [2018-10-13 13:27:50,490 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc03-16.bpl [2018-10-13 13:27:50,499 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-13 13:27:50,507 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2018-10-13 13:27:50,522 INFO L257 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2018-10-13 13:27:50,547 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-13 13:27:50,548 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-13 13:27:50,548 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-13 13:27:50,548 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-13 13:27:50,548 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-13 13:27:50,549 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-13 13:27:50,549 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-13 13:27:50,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-13 13:27:50,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-13 13:27:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-10-13 13:27:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-13 13:27:50,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:27:50,579 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] [2018-10-13 13:27:50,580 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:27:50,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:27:50,586 INFO L82 PathProgramCache]: Analyzing trace with hash 683902544, now seen corresponding path program 1 times [2018-10-13 13:27:50,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:27:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:27:51,477 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-10-13 13:27:51,637 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-10-13 13:27:52,361 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-13 13:27:52,828 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-10-13 13:27:55,016 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-10-13 13:27:55,145 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 13:27:55,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:27:55,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2018-10-13 13:27:55,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:27:55,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:27:55,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:27:55,175 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 33 states. [2018-10-13 13:27:56,279 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2018-10-13 13:27:56,683 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2018-10-13 13:27:57,034 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2018-10-13 13:27:57,503 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2018-10-13 13:27:57,763 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2018-10-13 13:28:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:28:00,010 INFO L93 Difference]: Finished difference Result 489 states and 696 transitions. [2018-10-13 13:28:00,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:28:00,016 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 34 [2018-10-13 13:28:00,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:28:00,041 INFO L225 Difference]: With dead ends: 489 [2018-10-13 13:28:00,042 INFO L226 Difference]: Without dead ends: 461 [2018-10-13 13:28:00,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=580, Invalid=1582, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:28:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-10-13 13:28:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 68. [2018-10-13 13:28:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-13 13:28:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2018-10-13 13:28:00,096 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 34 [2018-10-13 13:28:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:28:00,096 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2018-10-13 13:28:00,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:28:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2018-10-13 13:28:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-13 13:28:00,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:28:00,098 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] [2018-10-13 13:28:00,099 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:28:00,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:28:00,099 INFO L82 PathProgramCache]: Analyzing trace with hash -273857482, now seen corresponding path program 1 times [2018-10-13 13:28:00,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:28:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:28:01,207 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-13 13:28:01,391 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-13 13:28:01,645 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2018-10-13 13:28:01,987 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-13 13:28:02,180 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-10-13 13:28:02,369 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-13 13:28:02,592 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-10-13 13:28:02,803 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2018-10-13 13:28:02,964 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2018-10-13 13:28:03,212 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2018-10-13 13:28:03,519 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2018-10-13 13:28:03,871 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 13:28:03,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:28:03,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2018-10-13 13:28:03,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:28:03,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:28:03,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:28:03,877 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand 32 states. [2018-10-13 13:28:05,239 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2018-10-13 13:28:05,381 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2018-10-13 13:28:05,548 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2018-10-13 13:28:05,762 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-13 13:28:05,941 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-13 13:28:06,114 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2018-10-13 13:28:06,292 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2018-10-13 13:28:06,508 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2018-10-13 13:28:06,719 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2018-10-13 13:28:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:28:08,529 INFO L93 Difference]: Finished difference Result 399 states and 596 transitions. [2018-10-13 13:28:08,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:28:08,530 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 35 [2018-10-13 13:28:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:28:08,535 INFO L225 Difference]: With dead ends: 399 [2018-10-13 13:28:08,535 INFO L226 Difference]: Without dead ends: 399 [2018-10-13 13:28:08,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=522, Invalid=1548, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:28:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-13 13:28:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 73. [2018-10-13 13:28:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-13 13:28:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 137 transitions. [2018-10-13 13:28:08,562 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 137 transitions. Word has length 35 [2018-10-13 13:28:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:28:08,562 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 137 transitions. [2018-10-13 13:28:08,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:28:08,562 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 137 transitions. [2018-10-13 13:28:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-13 13:28:08,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:28:08,566 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] [2018-10-13 13:28:08,567 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:28:08,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:28:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 100289077, now seen corresponding path program 1 times [2018-10-13 13:28:08,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:28:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:28:09,343 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-10-13 13:28:09,532 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-13 13:28:09,697 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-13 13:28:09,879 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-13 13:28:10,134 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-10-13 13:28:10,352 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-10-13 13:28:10,569 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2018-10-13 13:28:10,829 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-13 13:28:11,063 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2018-10-13 13:28:11,289 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2018-10-13 13:28:11,533 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-13 13:28:12,098 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-13 13:28:12,339 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-13 13:28:12,544 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-13 13:28:12,773 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-10-13 13:28:13,063 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2018-10-13 13:28:13,381 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-10-13 13:28:13,589 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2018-10-13 13:28:14,176 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 13:28:14,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:28:14,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:28:14,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:28:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:28:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:28:14,178 INFO L87 Difference]: Start difference. First operand 73 states and 137 transitions. Second operand 35 states. [2018-10-13 13:28:15,127 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2018-10-13 13:28:15,384 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2018-10-13 13:28:15,657 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2018-10-13 13:28:16,325 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 65 [2018-10-13 13:28:17,102 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 82 [2018-10-13 13:28:17,551 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 72 [2018-10-13 13:28:17,961 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 68 [2018-10-13 13:28:18,431 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 79 [2018-10-13 13:28:18,847 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2018-10-13 13:28:19,348 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 81 [2018-10-13 13:28:20,133 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 77 [2018-10-13 13:28:20,745 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 78 [2018-10-13 13:28:21,216 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 75 [2018-10-13 13:28:21,719 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 75 [2018-10-13 13:28:22,185 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 71 [2018-10-13 13:28:22,637 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 70 [2018-10-13 13:28:23,126 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 82 [2018-10-13 13:28:23,620 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 79 [2018-10-13 13:28:24,101 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 77 [2018-10-13 13:28:24,567 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2018-10-13 13:28:25,121 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 80 [2018-10-13 13:28:25,809 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 70 [2018-10-13 13:28:26,433 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 79 [2018-10-13 13:28:26,989 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 76 [2018-10-13 13:28:27,501 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 73 [2018-10-13 13:28:30,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:28:30,015 INFO L93 Difference]: Finished difference Result 405 states and 754 transitions. [2018-10-13 13:28:30,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-13 13:28:30,017 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 36 [2018-10-13 13:28:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:28:30,020 INFO L225 Difference]: With dead ends: 405 [2018-10-13 13:28:30,020 INFO L226 Difference]: Without dead ends: 405 [2018-10-13 13:28:30,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=1258, Invalid=3032, Unknown=0, NotChecked=0, Total=4290 [2018-10-13 13:28:30,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-10-13 13:28:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 71. [2018-10-13 13:28:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-13 13:28:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 118 transitions. [2018-10-13 13:28:30,030 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 118 transitions. Word has length 36 [2018-10-13 13:28:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:28:30,032 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 118 transitions. [2018-10-13 13:28:30,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:28:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 118 transitions. [2018-10-13 13:28:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-13 13:28:30,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:28:30,033 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] [2018-10-13 13:28:30,034 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:28:30,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:28:30,034 INFO L82 PathProgramCache]: Analyzing trace with hash 100290131, now seen corresponding path program 1 times [2018-10-13 13:28:30,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:28:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:28:30,799 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2018-10-13 13:28:30,958 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2018-10-13 13:28:31,271 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-13 13:28:31,563 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 61 [2018-10-13 13:28:32,195 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 69 [2018-10-13 13:28:32,968 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 82 [2018-10-13 13:28:33,716 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 90 [2018-10-13 13:28:34,327 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 87 [2018-10-13 13:28:34,949 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 101 [2018-10-13 13:28:35,496 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 98 [2018-10-13 13:28:36,216 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 95 [2018-10-13 13:28:36,939 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 92 [2018-10-13 13:28:37,576 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 89 [2018-10-13 13:28:38,120 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 86 [2018-10-13 13:28:38,606 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 79 [2018-10-13 13:28:39,154 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 62 [2018-10-13 13:28:39,440 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2018-10-13 13:28:39,647 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2018-10-13 13:28:40,164 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 13:28:40,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:28:40,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:28:40,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:28:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:28:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:28:40,167 INFO L87 Difference]: Start difference. First operand 71 states and 118 transitions. Second operand 34 states. [2018-10-13 13:28:40,753 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-13 13:28:40,936 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-13 13:28:41,180 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2018-10-13 13:28:41,473 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2018-10-13 13:28:41,799 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 65 [2018-10-13 13:28:42,112 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 67 [2018-10-13 13:28:42,803 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2018-10-13 13:28:43,348 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 73 [2018-10-13 13:28:43,783 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 82 [2018-10-13 13:28:44,183 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 70 [2018-10-13 13:28:44,642 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 68 [2018-10-13 13:28:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:28:46,597 INFO L93 Difference]: Finished difference Result 279 states and 496 transitions. [2018-10-13 13:28:46,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:28:46,597 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 36 [2018-10-13 13:28:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:28:46,600 INFO L225 Difference]: With dead ends: 279 [2018-10-13 13:28:46,601 INFO L226 Difference]: Without dead ends: 279 [2018-10-13 13:28:46,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:28:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-13 13:28:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 77. [2018-10-13 13:28:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-13 13:28:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 172 transitions. [2018-10-13 13:28:46,608 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 172 transitions. Word has length 36 [2018-10-13 13:28:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:28:46,609 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 172 transitions. [2018-10-13 13:28:46,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:28:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 172 transitions. [2018-10-13 13:28:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-13 13:28:46,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:28:46,611 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:28:46,611 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:28:46,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:28:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash 100289449, now seen corresponding path program 1 times [2018-10-13 13:28:46,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:28:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:28:47,114 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2018-10-13 13:28:47,288 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2018-10-13 13:28:47,578 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 57 [2018-10-13 13:28:47,801 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2018-10-13 13:28:48,169 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 73 [2018-10-13 13:28:48,568 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 78 [2018-10-13 13:28:49,019 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2018-10-13 13:28:49,460 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2018-10-13 13:28:49,966 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 89 [2018-10-13 13:28:50,487 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 92 [2018-10-13 13:28:51,013 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 97 [2018-10-13 13:28:51,533 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 94 [2018-10-13 13:28:52,054 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 91 [2018-10-13 13:28:52,605 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 87 [2018-10-13 13:28:52,992 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 63 [2018-10-13 13:28:53,409 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 61 [2018-10-13 13:28:53,769 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 53 [2018-10-13 13:28:54,056 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2018-10-13 13:28:54,315 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 30 [2018-10-13 13:28:54,597 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 28 [2018-10-13 13:28:55,208 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 13:28:55,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:28:55,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:28:55,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:28:55,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:28:55,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1030, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:28:55,210 INFO L87 Difference]: Start difference. First operand 77 states and 172 transitions. Second operand 34 states. [2018-10-13 13:28:55,896 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-10-13 13:28:56,098 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2018-10-13 13:28:56,336 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2018-10-13 13:28:56,662 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2018-10-13 13:28:57,066 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 81 [2018-10-13 13:28:57,507 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 83 [2018-10-13 13:28:58,070 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 86 [2018-10-13 13:28:58,990 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 99 [2018-10-13 13:28:59,555 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 91 [2018-10-13 13:29:00,129 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 89 [2018-10-13 13:29:00,721 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 97 [2018-10-13 13:29:01,338 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 96 [2018-10-13 13:29:01,979 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 96 [2018-10-13 13:29:02,579 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 95 [2018-10-13 13:29:03,159 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 98 [2018-10-13 13:29:03,726 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 93 [2018-10-13 13:29:04,315 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 98 [2018-10-13 13:29:04,882 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 92 [2018-10-13 13:29:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:07,270 INFO L93 Difference]: Finished difference Result 513 states and 1092 transitions. [2018-10-13 13:29:07,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 13:29:07,271 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 36 [2018-10-13 13:29:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:07,276 INFO L225 Difference]: With dead ends: 513 [2018-10-13 13:29:07,276 INFO L226 Difference]: Without dead ends: 513 [2018-10-13 13:29:07,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=771, Invalid=2309, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:29:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2018-10-13 13:29:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 83. [2018-10-13 13:29:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-13 13:29:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 226 transitions. [2018-10-13 13:29:07,285 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 226 transitions. Word has length 36 [2018-10-13 13:29:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:07,286 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 226 transitions. [2018-10-13 13:29:07,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:29:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 226 transitions. [2018-10-13 13:29:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-13 13:29:07,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:07,287 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] [2018-10-13 13:29:07,288 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:07,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash 100289945, now seen corresponding path program 1 times [2018-10-13 13:29:07,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:08,132 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2018-10-13 13:29:08,319 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 51 [2018-10-13 13:29:08,560 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 58 [2018-10-13 13:29:08,862 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 65 [2018-10-13 13:29:09,281 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 70 [2018-10-13 13:29:09,502 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-13 13:29:09,725 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 63 [2018-10-13 13:29:10,020 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-13 13:29:10,337 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 71 [2018-10-13 13:29:10,640 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 68 [2018-10-13 13:29:10,947 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2018-10-13 13:29:11,433 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2018-10-13 13:29:11,736 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 59 [2018-10-13 13:29:12,041 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 56 [2018-10-13 13:29:12,221 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 39 [2018-10-13 13:29:12,378 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 36 [2018-10-13 13:29:13,027 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 13:29:13,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:29:13,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:29:13,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:29:13,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:29:13,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:29:13,029 INFO L87 Difference]: Start difference. First operand 83 states and 226 transitions. Second operand 34 states. [2018-10-13 13:29:13,764 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-13 13:29:13,946 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-13 13:29:14,140 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-13 13:29:14,417 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-10-13 13:29:14,671 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2018-10-13 13:29:15,195 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2018-10-13 13:29:15,426 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 76 [2018-10-13 13:29:15,664 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2018-10-13 13:29:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:17,054 INFO L93 Difference]: Finished difference Result 227 states and 526 transitions. [2018-10-13 13:29:17,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:29:17,055 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 36 [2018-10-13 13:29:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:17,058 INFO L225 Difference]: With dead ends: 227 [2018-10-13 13:29:17,058 INFO L226 Difference]: Without dead ends: 227 [2018-10-13 13:29:17,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=432, Invalid=1638, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:29:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-13 13:29:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 85. [2018-10-13 13:29:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-13 13:29:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 244 transitions. [2018-10-13 13:29:17,065 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 244 transitions. Word has length 36 [2018-10-13 13:29:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:17,065 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 244 transitions. [2018-10-13 13:29:17,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:29:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 244 transitions. [2018-10-13 13:29:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-13 13:29:17,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:17,066 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] [2018-10-13 13:29:17,067 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:17,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:17,067 INFO L82 PathProgramCache]: Analyzing trace with hash 100352786, now seen corresponding path program 1 times [2018-10-13 13:29:17,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:17,472 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-13 13:29:17,854 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-13 13:29:18,074 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2018-10-13 13:29:18,842 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-13 13:29:18,969 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-13 13:29:19,568 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-10-13 13:29:19,951 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 13:29:19,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:29:19,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2018-10-13 13:29:19,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:29:19,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:29:19,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:29:19,953 INFO L87 Difference]: Start difference. First operand 85 states and 244 transitions. Second operand 30 states. [2018-10-13 13:29:20,958 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2018-10-13 13:29:21,703 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-13 13:29:21,858 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-13 13:29:22,465 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2018-10-13 13:29:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:23,422 INFO L93 Difference]: Finished difference Result 241 states and 652 transitions. [2018-10-13 13:29:23,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:29:23,423 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2018-10-13 13:29:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:23,426 INFO L225 Difference]: With dead ends: 241 [2018-10-13 13:29:23,426 INFO L226 Difference]: Without dead ends: 241 [2018-10-13 13:29:23,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=445, Invalid=1447, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:29:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-13 13:29:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 104. [2018-10-13 13:29:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-13 13:29:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 393 transitions. [2018-10-13 13:29:23,434 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 393 transitions. Word has length 36 [2018-10-13 13:29:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:23,434 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 393 transitions. [2018-10-13 13:29:23,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:29:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 393 transitions. [2018-10-13 13:29:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-13 13:29:23,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:23,436 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] [2018-10-13 13:29:23,436 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:23,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:23,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1185975023, now seen corresponding path program 1 times [2018-10-13 13:29:23,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:23,829 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:29:24,314 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-13 13:29:25,850 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 13:29:25,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:29:25,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:29:25,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:29:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:29:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:29:25,852 INFO L87 Difference]: Start difference. First operand 104 states and 393 transitions. Second operand 32 states. [2018-10-13 13:29:26,821 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-13 13:29:27,176 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-13 13:29:27,486 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-13 13:29:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:28,496 INFO L93 Difference]: Finished difference Result 220 states and 697 transitions. [2018-10-13 13:29:28,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:29:28,497 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 37 [2018-10-13 13:29:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:28,500 INFO L225 Difference]: With dead ends: 220 [2018-10-13 13:29:28,500 INFO L226 Difference]: Without dead ends: 220 [2018-10-13 13:29:28,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:29:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-13 13:29:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 111. [2018-10-13 13:29:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-13 13:29:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 464 transitions. [2018-10-13 13:29:28,507 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 464 transitions. Word has length 37 [2018-10-13 13:29:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:28,508 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 464 transitions. [2018-10-13 13:29:28,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:29:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 464 transitions. [2018-10-13 13:29:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-13 13:29:28,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:28,509 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] [2018-10-13 13:29:28,510 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:28,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1185973101, now seen corresponding path program 1 times [2018-10-13 13:29:28,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:28,811 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:29:30,073 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-13 13:29:30,672 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 13:29:30,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:29:30,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:29:30,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:29:30,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:29:30,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:29:30,673 INFO L87 Difference]: Start difference. First operand 111 states and 464 transitions. Second operand 33 states. [2018-10-13 13:29:33,236 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-13 13:29:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:33,830 INFO L93 Difference]: Finished difference Result 328 states and 1226 transitions. [2018-10-13 13:29:33,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:29:33,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 37 [2018-10-13 13:29:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:33,835 INFO L225 Difference]: With dead ends: 328 [2018-10-13 13:29:33,835 INFO L226 Difference]: Without dead ends: 327 [2018-10-13 13:29:33,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=634, Invalid=1816, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:29:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-13 13:29:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 164. [2018-10-13 13:29:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-13 13:29:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 836 transitions. [2018-10-13 13:29:33,843 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 836 transitions. Word has length 37 [2018-10-13 13:29:33,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:33,844 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 836 transitions. [2018-10-13 13:29:33,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:29:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 836 transitions. [2018-10-13 13:29:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-13 13:29:33,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:33,845 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] [2018-10-13 13:29:33,846 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:33,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1186028839, now seen corresponding path program 1 times [2018-10-13 13:29:33,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:36,202 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 13:29:36,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:29:36,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2018-10-13 13:29:36,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:29:36,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:29:36,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:29:36,204 INFO L87 Difference]: Start difference. First operand 164 states and 836 transitions. Second operand 34 states. [2018-10-13 13:29:37,122 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2018-10-13 13:29:37,766 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-13 13:29:37,912 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-13 13:29:38,061 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2018-10-13 13:29:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:39,449 INFO L93 Difference]: Finished difference Result 511 states and 2133 transitions. [2018-10-13 13:29:39,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:29:39,450 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 37 [2018-10-13 13:29:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:39,455 INFO L225 Difference]: With dead ends: 511 [2018-10-13 13:29:39,455 INFO L226 Difference]: Without dead ends: 511 [2018-10-13 13:29:39,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=562, Invalid=1888, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:29:39,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-10-13 13:29:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 188. [2018-10-13 13:29:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-13 13:29:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 1055 transitions. [2018-10-13 13:29:39,467 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 1055 transitions. Word has length 37 [2018-10-13 13:29:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:39,467 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 1055 transitions. [2018-10-13 13:29:39,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:29:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 1055 transitions. [2018-10-13 13:29:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-13 13:29:39,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:39,468 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] [2018-10-13 13:29:39,469 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:39,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:39,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1184030792, now seen corresponding path program 1 times [2018-10-13 13:29:39,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:41,028 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-13 13:29:41,196 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 13:29:41,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:29:41,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2018-10-13 13:29:41,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:29:41,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:29:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:29:41,197 INFO L87 Difference]: Start difference. First operand 188 states and 1055 transitions. Second operand 28 states. [2018-10-13 13:29:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:43,836 INFO L93 Difference]: Finished difference Result 414 states and 1840 transitions. [2018-10-13 13:29:43,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:29:43,837 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 37 [2018-10-13 13:29:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:43,841 INFO L225 Difference]: With dead ends: 414 [2018-10-13 13:29:43,841 INFO L226 Difference]: Without dead ends: 414 [2018-10-13 13:29:43,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=417, Invalid=1305, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:29:43,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-10-13 13:29:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 213. [2018-10-13 13:29:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-13 13:29:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 1257 transitions. [2018-10-13 13:29:43,851 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 1257 transitions. Word has length 37 [2018-10-13 13:29:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:43,852 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 1257 transitions. [2018-10-13 13:29:43,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:29:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 1257 transitions. [2018-10-13 13:29:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:29:43,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:43,853 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] [2018-10-13 13:29:43,854 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:43,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1888464120, now seen corresponding path program 1 times [2018-10-13 13:29:43,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:29:44,858 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-13 13:29:45,019 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-13 13:29:45,342 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2018-10-13 13:29:45,893 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 122 [2018-10-13 13:29:46,256 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2018-10-13 13:29:46,663 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 92 [2018-10-13 13:29:47,359 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2018-10-13 13:29:47,758 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2018-10-13 13:29:48,151 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2018-10-13 13:29:48,481 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 68 [2018-10-13 13:29:48,865 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2018-10-13 13:29:49,071 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 36 [2018-10-13 13:29:49,325 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2018-10-13 13:29:49,571 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2018-10-13 13:29:49,898 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 26 [2018-10-13 13:29:50,435 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 13:29:50,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:29:50,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:29:50,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:29:50,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:29:50,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:29:50,437 INFO L87 Difference]: Start difference. First operand 213 states and 1257 transitions. Second operand 35 states. [2018-10-13 13:29:51,217 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-10-13 13:29:51,461 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2018-10-13 13:29:51,748 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2018-10-13 13:29:52,096 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2018-10-13 13:29:52,418 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 77 [2018-10-13 13:29:53,109 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 84 [2018-10-13 13:29:53,495 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 83 [2018-10-13 13:29:53,838 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2018-10-13 13:29:54,370 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2018-10-13 13:29:54,765 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 82 [2018-10-13 13:29:55,134 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 81 [2018-10-13 13:29:55,511 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 84 [2018-10-13 13:29:55,889 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 82 [2018-10-13 13:29:56,788 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 84 [2018-10-13 13:29:57,759 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 81 [2018-10-13 13:29:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:29:58,894 INFO L93 Difference]: Finished difference Result 668 states and 3945 transitions. [2018-10-13 13:29:58,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 13:29:58,900 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2018-10-13 13:29:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:29:58,907 INFO L225 Difference]: With dead ends: 668 [2018-10-13 13:29:58,907 INFO L226 Difference]: Without dead ends: 668 [2018-10-13 13:29:58,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=725, Invalid=2245, Unknown=0, NotChecked=0, Total=2970 [2018-10-13 13:29:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2018-10-13 13:29:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 221. [2018-10-13 13:29:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-13 13:29:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 1329 transitions. [2018-10-13 13:29:58,920 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 1329 transitions. Word has length 38 [2018-10-13 13:29:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:29:58,921 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 1329 transitions. [2018-10-13 13:29:58,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:29:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 1329 transitions. [2018-10-13 13:29:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:29:58,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:29:58,922 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] [2018-10-13 13:29:58,922 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:29:58,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:29:58,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1888463190, now seen corresponding path program 1 times [2018-10-13 13:29:58,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:29:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:30:00,215 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2018-10-13 13:30:00,428 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2018-10-13 13:30:00,651 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2018-10-13 13:30:00,884 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2018-10-13 13:30:01,111 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2018-10-13 13:30:01,339 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2018-10-13 13:30:01,540 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2018-10-13 13:30:01,717 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-13 13:30:01,891 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-13 13:30:02,054 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-13 13:30:02,212 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-10-13 13:30:02,362 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-10-13 13:30:02,716 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-10-13 13:30:03,111 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 13:30:03,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:30:03,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:30:03,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:30:03,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:30:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:30:03,113 INFO L87 Difference]: Start difference. First operand 221 states and 1329 transitions. Second operand 34 states. [2018-10-13 13:30:03,985 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2018-10-13 13:30:04,228 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 60 [2018-10-13 13:30:04,913 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 63 [2018-10-13 13:30:05,258 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 63 [2018-10-13 13:30:05,725 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2018-10-13 13:30:06,139 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 71 [2018-10-13 13:30:06,537 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 65 [2018-10-13 13:30:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:30:07,941 INFO L93 Difference]: Finished difference Result 529 states and 2544 transitions. [2018-10-13 13:30:07,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:30:07,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 38 [2018-10-13 13:30:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:30:07,946 INFO L225 Difference]: With dead ends: 529 [2018-10-13 13:30:07,946 INFO L226 Difference]: Without dead ends: 529 [2018-10-13 13:30:07,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=460, Invalid=1610, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:30:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2018-10-13 13:30:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 257. [2018-10-13 13:30:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-13 13:30:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 1650 transitions. [2018-10-13 13:30:07,959 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 1650 transitions. Word has length 38 [2018-10-13 13:30:07,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:30:07,960 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 1650 transitions. [2018-10-13 13:30:07,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:30:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 1650 transitions. [2018-10-13 13:30:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:30:07,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:30:07,961 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] [2018-10-13 13:30:07,961 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:30:07,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:30:07,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1888463934, now seen corresponding path program 1 times [2018-10-13 13:30:07,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:30:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:30:08,549 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2018-10-13 13:30:08,688 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2018-10-13 13:30:08,849 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2018-10-13 13:30:09,020 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2018-10-13 13:30:09,223 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2018-10-13 13:30:09,462 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-13 13:30:09,771 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2018-10-13 13:30:10,096 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2018-10-13 13:30:10,258 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2018-10-13 13:30:10,390 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2018-10-13 13:30:10,518 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2018-10-13 13:30:10,643 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-10-13 13:30:11,147 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2018-10-13 13:30:11,832 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 13:30:11,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:30:11,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:30:11,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:30:11,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:30:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:30:11,833 INFO L87 Difference]: Start difference. First operand 257 states and 1650 transitions. Second operand 34 states. [2018-10-13 13:30:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:30:14,012 INFO L93 Difference]: Finished difference Result 406 states and 1984 transitions. [2018-10-13 13:30:14,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:30:14,012 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 38 [2018-10-13 13:30:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:30:14,017 INFO L225 Difference]: With dead ends: 406 [2018-10-13 13:30:14,017 INFO L226 Difference]: Without dead ends: 406 [2018-10-13 13:30:14,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 13:30:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-10-13 13:30:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 225. [2018-10-13 13:30:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-13 13:30:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 1359 transitions. [2018-10-13 13:30:14,027 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 1359 transitions. Word has length 38 [2018-10-13 13:30:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:30:14,027 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 1359 transitions. [2018-10-13 13:30:14,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:30:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 1359 transitions. [2018-10-13 13:30:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:30:14,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:30:14,028 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] [2018-10-13 13:30:14,029 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:30:14,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:30:14,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1889417246, now seen corresponding path program 1 times [2018-10-13 13:30:14,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:30:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:30:14,405 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:30:14,831 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2018-10-13 13:30:15,014 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 47 [2018-10-13 13:30:15,256 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2018-10-13 13:30:15,563 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2018-10-13 13:30:16,000 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 77 [2018-10-13 13:30:16,545 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 86 [2018-10-13 13:30:16,916 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 62 [2018-10-13 13:30:17,312 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 70 [2018-10-13 13:30:17,685 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 70 [2018-10-13 13:30:18,121 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 75 [2018-10-13 13:30:18,585 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 72 [2018-10-13 13:30:19,011 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 69 [2018-10-13 13:30:19,392 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 61 [2018-10-13 13:30:19,778 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 58 [2018-10-13 13:30:20,148 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 54 [2018-10-13 13:30:20,449 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 40 [2018-10-13 13:30:20,712 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 38 [2018-10-13 13:30:20,908 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 34 [2018-10-13 13:30:21,132 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 32 [2018-10-13 13:30:21,335 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 27 [2018-10-13 13:30:22,026 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 13:30:22,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:30:22,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:30:22,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:30:22,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:30:22,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:30:22,028 INFO L87 Difference]: Start difference. First operand 225 states and 1359 transitions. Second operand 35 states. [2018-10-13 13:30:23,073 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2018-10-13 13:30:23,321 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 57 [2018-10-13 13:30:23,578 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2018-10-13 13:30:23,915 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 64 [2018-10-13 13:30:24,326 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 73 [2018-10-13 13:30:24,967 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 73 [2018-10-13 13:30:25,273 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 69 [2018-10-13 13:30:25,636 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 85 [2018-10-13 13:30:25,981 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 71 [2018-10-13 13:30:26,482 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 79 [2018-10-13 13:30:26,849 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 69 [2018-10-13 13:30:27,218 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 84 [2018-10-13 13:30:27,649 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 77 [2018-10-13 13:30:28,042 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 83 [2018-10-13 13:30:28,470 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2018-10-13 13:30:28,858 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 87 [2018-10-13 13:30:29,285 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2018-10-13 13:30:29,726 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2018-10-13 13:30:30,114 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 85 [2018-10-13 13:30:30,481 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 83 [2018-10-13 13:30:30,907 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 76 [2018-10-13 13:30:31,271 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 86 [2018-10-13 13:30:31,663 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 84 [2018-10-13 13:30:32,441 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 71 [2018-10-13 13:30:33,006 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 78 [2018-10-13 13:30:33,417 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 81 [2018-10-13 13:30:33,829 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 86 [2018-10-13 13:30:34,227 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 72 [2018-10-13 13:30:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:30:36,509 INFO L93 Difference]: Finished difference Result 1114 states and 6679 transitions. [2018-10-13 13:30:36,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-13 13:30:36,509 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2018-10-13 13:30:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:30:36,519 INFO L225 Difference]: With dead ends: 1114 [2018-10-13 13:30:36,520 INFO L226 Difference]: Without dead ends: 1113 [2018-10-13 13:30:36,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=1399, Invalid=3293, Unknown=0, NotChecked=0, Total=4692 [2018-10-13 13:30:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2018-10-13 13:30:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 309. [2018-10-13 13:30:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-10-13 13:30:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 2029 transitions. [2018-10-13 13:30:36,542 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 2029 transitions. Word has length 38 [2018-10-13 13:30:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:30:36,542 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 2029 transitions. [2018-10-13 13:30:36,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:30:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 2029 transitions. [2018-10-13 13:30:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:30:36,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:30:36,544 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] [2018-10-13 13:30:36,544 INFO L424 AbstractCegarLoop]: === Iteration 16 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:30:36,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:30:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1889480087, now seen corresponding path program 1 times [2018-10-13 13:30:36,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:30:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:30:37,674 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 13:30:37,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:30:37,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:30:37,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:30:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:30:37,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:30:37,676 INFO L87 Difference]: Start difference. First operand 309 states and 2029 transitions. Second operand 31 states. [2018-10-13 13:30:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:30:40,697 INFO L93 Difference]: Finished difference Result 480 states and 2592 transitions. [2018-10-13 13:30:40,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:30:40,703 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 38 [2018-10-13 13:30:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:30:40,707 INFO L225 Difference]: With dead ends: 480 [2018-10-13 13:30:40,707 INFO L226 Difference]: Without dead ends: 480 [2018-10-13 13:30:40,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:30:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-10-13 13:30:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 264. [2018-10-13 13:30:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-13 13:30:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 1617 transitions. [2018-10-13 13:30:40,717 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 1617 transitions. Word has length 38 [2018-10-13 13:30:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:30:40,717 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 1617 transitions. [2018-10-13 13:30:40,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:30:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 1617 transitions. [2018-10-13 13:30:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:30:40,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:30:40,719 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] [2018-10-13 13:30:40,719 INFO L424 AbstractCegarLoop]: === Iteration 17 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:30:40,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:30:40,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1889476828, now seen corresponding path program 1 times [2018-10-13 13:30:40,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:30:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:30:41,271 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:30:41,583 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 24 [2018-10-13 13:30:41,723 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 29 [2018-10-13 13:30:41,905 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 38 [2018-10-13 13:30:42,174 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-13 13:30:42,555 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 60 [2018-10-13 13:30:43,062 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 76 [2018-10-13 13:30:43,618 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 87 [2018-10-13 13:30:44,486 WARN L178 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 70 [2018-10-13 13:30:45,472 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 87 [2018-10-13 13:30:46,405 WARN L178 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 100 [2018-10-13 13:30:47,088 WARN L178 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 69 [2018-10-13 13:30:47,828 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 75 [2018-10-13 13:30:48,575 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 72 [2018-10-13 13:30:49,310 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 69 [2018-10-13 13:30:49,989 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 64 [2018-10-13 13:30:50,637 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 60 [2018-10-13 13:30:51,181 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 55 [2018-10-13 13:30:51,542 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 37 [2018-10-13 13:30:51,961 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 34 [2018-10-13 13:30:52,350 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 37 [2018-10-13 13:30:52,659 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 32 [2018-10-13 13:30:52,902 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 24 [2018-10-13 13:30:53,102 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2018-10-13 13:30:53,694 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 13:30:53,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:30:53,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:30:53,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:30:53,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:30:53,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:30:53,695 INFO L87 Difference]: Start difference. First operand 264 states and 1617 transitions. Second operand 35 states. [2018-10-13 13:30:54,313 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-13 13:30:54,522 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2018-10-13 13:30:54,788 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2018-10-13 13:30:55,085 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2018-10-13 13:30:55,408 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2018-10-13 13:30:55,751 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 70 [2018-10-13 13:30:56,137 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2018-10-13 13:30:56,514 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 78 [2018-10-13 13:30:57,243 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 80 [2018-10-13 13:30:57,687 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 85 [2018-10-13 13:30:58,105 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2018-10-13 13:30:58,587 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 86 [2018-10-13 13:30:59,042 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 85 [2018-10-13 13:30:59,522 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 86 [2018-10-13 13:31:00,002 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 85 [2018-10-13 13:31:00,456 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 82 [2018-10-13 13:31:00,931 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 82 [2018-10-13 13:31:01,394 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 88 [2018-10-13 13:31:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:03,312 INFO L93 Difference]: Finished difference Result 863 states and 4076 transitions. [2018-10-13 13:31:03,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-13 13:31:03,312 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2018-10-13 13:31:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:03,320 INFO L225 Difference]: With dead ends: 863 [2018-10-13 13:31:03,320 INFO L226 Difference]: Without dead ends: 863 [2018-10-13 13:31:03,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=791, Invalid=2401, Unknown=0, NotChecked=0, Total=3192 [2018-10-13 13:31:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2018-10-13 13:31:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 270. [2018-10-13 13:31:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-10-13 13:31:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 1671 transitions. [2018-10-13 13:31:03,333 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 1671 transitions. Word has length 38 [2018-10-13 13:31:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:03,334 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 1671 transitions. [2018-10-13 13:31:03,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:31:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 1671 transitions. [2018-10-13 13:31:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:31:03,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:03,335 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] [2018-10-13 13:31:03,335 INFO L424 AbstractCegarLoop]: === Iteration 18 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:03,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:03,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1889539669, now seen corresponding path program 1 times [2018-10-13 13:31:03,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:03,750 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:31:04,235 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2018-10-13 13:31:04,361 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2018-10-13 13:31:04,544 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-13 13:31:04,768 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2018-10-13 13:31:04,983 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2018-10-13 13:31:05,233 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 54 [2018-10-13 13:31:05,543 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2018-10-13 13:31:05,838 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2018-10-13 13:31:06,119 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2018-10-13 13:31:06,375 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2018-10-13 13:31:06,615 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 47 [2018-10-13 13:31:06,842 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2018-10-13 13:31:07,441 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 13:31:07,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:07,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:31:07,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:31:07,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:31:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:31:07,442 INFO L87 Difference]: Start difference. First operand 270 states and 1671 transitions. Second operand 30 states. [2018-10-13 13:31:08,312 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2018-10-13 13:31:08,760 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2018-10-13 13:31:09,080 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2018-10-13 13:31:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:09,967 INFO L93 Difference]: Finished difference Result 480 states and 2777 transitions. [2018-10-13 13:31:09,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:31:09,968 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 38 [2018-10-13 13:31:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:09,974 INFO L225 Difference]: With dead ends: 480 [2018-10-13 13:31:09,974 INFO L226 Difference]: Without dead ends: 480 [2018-10-13 13:31:09,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:31:09,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-10-13 13:31:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 340. [2018-10-13 13:31:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-13 13:31:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 2303 transitions. [2018-10-13 13:31:09,985 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 2303 transitions. Word has length 38 [2018-10-13 13:31:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:09,985 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 2303 transitions. [2018-10-13 13:31:09,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:31:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 2303 transitions. [2018-10-13 13:31:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:31:09,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:09,986 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] [2018-10-13 13:31:09,987 INFO L424 AbstractCegarLoop]: === Iteration 19 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:09,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:09,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1888581486, now seen corresponding path program 1 times [2018-10-13 13:31:09,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:11,338 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 13:31:11,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:11,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:31:11,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:31:11,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:31:11,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:31:11,340 INFO L87 Difference]: Start difference. First operand 340 states and 2303 transitions. Second operand 35 states. [2018-10-13 13:31:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:12,957 INFO L93 Difference]: Finished difference Result 380 states and 2400 transitions. [2018-10-13 13:31:12,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:31:12,957 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2018-10-13 13:31:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:12,962 INFO L225 Difference]: With dead ends: 380 [2018-10-13 13:31:12,962 INFO L226 Difference]: Without dead ends: 380 [2018-10-13 13:31:12,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=488, Invalid=1582, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:31:12,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-13 13:31:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 129. [2018-10-13 13:31:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-13 13:31:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 405 transitions. [2018-10-13 13:31:12,967 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 405 transitions. Word has length 38 [2018-10-13 13:31:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:12,967 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 405 transitions. [2018-10-13 13:31:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:31:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 405 transitions. [2018-10-13 13:31:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:31:12,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:12,968 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] [2018-10-13 13:31:12,968 INFO L424 AbstractCegarLoop]: === Iteration 20 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:12,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1887930955, now seen corresponding path program 1 times [2018-10-13 13:31:12,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:13,548 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-10-13 13:31:14,889 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 13:31:14,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:31:14,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2018-10-13 13:31:14,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:31:14,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:31:14,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:31:14,891 INFO L87 Difference]: Start difference. First operand 129 states and 405 transitions. Second operand 32 states. [2018-10-13 13:31:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:17,398 INFO L93 Difference]: Finished difference Result 404 states and 1028 transitions. [2018-10-13 13:31:17,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:31:17,399 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-10-13 13:31:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:17,403 INFO L225 Difference]: With dead ends: 404 [2018-10-13 13:31:17,403 INFO L226 Difference]: Without dead ends: 404 [2018-10-13 13:31:17,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=507, Invalid=1655, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:31:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-10-13 13:31:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 131. [2018-10-13 13:31:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-13 13:31:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 423 transitions. [2018-10-13 13:31:17,408 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 423 transitions. Word has length 38 [2018-10-13 13:31:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:17,408 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 423 transitions. [2018-10-13 13:31:17,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:31:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 423 transitions. [2018-10-13 13:31:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:31:17,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:17,409 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] [2018-10-13 13:31:17,410 INFO L424 AbstractCegarLoop]: === Iteration 21 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:17,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:17,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1889360923, now seen corresponding path program 1 times [2018-10-13 13:31:17,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:17,726 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:31:18,775 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 13:31:18,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:18,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:31:18,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:31:18,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:31:18,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:31:18,776 INFO L87 Difference]: Start difference. First operand 131 states and 423 transitions. Second operand 30 states. [2018-10-13 13:31:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:20,538 INFO L93 Difference]: Finished difference Result 241 states and 627 transitions. [2018-10-13 13:31:20,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:31:20,539 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 38 [2018-10-13 13:31:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:20,541 INFO L225 Difference]: With dead ends: 241 [2018-10-13 13:31:20,541 INFO L226 Difference]: Without dead ends: 241 [2018-10-13 13:31:20,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:31:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-13 13:31:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 135. [2018-10-13 13:31:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-13 13:31:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 459 transitions. [2018-10-13 13:31:20,546 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 459 transitions. Word has length 38 [2018-10-13 13:31:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:20,546 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 459 transitions. [2018-10-13 13:31:20,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:31:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 459 transitions. [2018-10-13 13:31:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-13 13:31:20,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:20,547 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] [2018-10-13 13:31:20,548 INFO L424 AbstractCegarLoop]: === Iteration 22 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:20,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:20,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1949751252, now seen corresponding path program 1 times [2018-10-13 13:31:20,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:21,243 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 13:31:21,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:31:21,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-13 13:31:21,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:31:21,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:31:21,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:31:21,244 INFO L87 Difference]: Start difference. First operand 135 states and 459 transitions. Second operand 26 states. [2018-10-13 13:31:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:22,814 INFO L93 Difference]: Finished difference Result 283 states and 779 transitions. [2018-10-13 13:31:22,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:31:22,817 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 38 [2018-10-13 13:31:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:22,819 INFO L225 Difference]: With dead ends: 283 [2018-10-13 13:31:22,819 INFO L226 Difference]: Without dead ends: 283 [2018-10-13 13:31:22,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=308, Invalid=952, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 13:31:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-13 13:31:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 148. [2018-10-13 13:31:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-13 13:31:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 520 transitions. [2018-10-13 13:31:22,824 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 520 transitions. Word has length 38 [2018-10-13 13:31:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:22,824 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 520 transitions. [2018-10-13 13:31:22,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:31:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 520 transitions. [2018-10-13 13:31:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:31:22,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:22,825 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] [2018-10-13 13:31:22,826 INFO L424 AbstractCegarLoop]: === Iteration 23 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:22,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1557601618, now seen corresponding path program 1 times [2018-10-13 13:31:22,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:24,233 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 13:31:24,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:24,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:31:24,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:31:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:31:24,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:31:24,234 INFO L87 Difference]: Start difference. First operand 148 states and 520 transitions. Second operand 32 states. [2018-10-13 13:31:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:26,090 INFO L93 Difference]: Finished difference Result 185 states and 588 transitions. [2018-10-13 13:31:26,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:31:26,090 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 39 [2018-10-13 13:31:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:26,092 INFO L225 Difference]: With dead ends: 185 [2018-10-13 13:31:26,092 INFO L226 Difference]: Without dead ends: 185 [2018-10-13 13:31:26,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=473, Invalid=1507, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:31:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-13 13:31:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 152. [2018-10-13 13:31:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-13 13:31:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 556 transitions. [2018-10-13 13:31:26,095 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 556 transitions. Word has length 39 [2018-10-13 13:31:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:26,096 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 556 transitions. [2018-10-13 13:31:26,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:31:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 556 transitions. [2018-10-13 13:31:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:31:26,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:26,097 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] [2018-10-13 13:31:26,097 INFO L424 AbstractCegarLoop]: === Iteration 24 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:26,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:26,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1557657356, now seen corresponding path program 1 times [2018-10-13 13:31:26,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:28,228 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 13:31:28,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:28,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:31:28,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:31:28,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:31:28,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:31:28,230 INFO L87 Difference]: Start difference. First operand 152 states and 556 transitions. Second operand 34 states. [2018-10-13 13:31:29,589 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-10-13 13:31:29,930 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-13 13:31:31,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:31,086 INFO L93 Difference]: Finished difference Result 225 states and 690 transitions. [2018-10-13 13:31:31,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:31:31,087 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2018-10-13 13:31:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:31,089 INFO L225 Difference]: With dead ends: 225 [2018-10-13 13:31:31,089 INFO L226 Difference]: Without dead ends: 225 [2018-10-13 13:31:31,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=549, Invalid=2001, Unknown=0, NotChecked=0, Total=2550 [2018-10-13 13:31:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-13 13:31:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 153. [2018-10-13 13:31:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-13 13:31:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 572 transitions. [2018-10-13 13:31:31,094 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 572 transitions. Word has length 39 [2018-10-13 13:31:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:31,094 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 572 transitions. [2018-10-13 13:31:31,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:31:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 572 transitions. [2018-10-13 13:31:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:31:31,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:31,095 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] [2018-10-13 13:31:31,095 INFO L424 AbstractCegarLoop]: === Iteration 25 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:31,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1557653512, now seen corresponding path program 1 times [2018-10-13 13:31:31,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:32,757 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 13:31:32,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:32,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:31:32,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:31:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:31:32,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:31:32,758 INFO L87 Difference]: Start difference. First operand 153 states and 572 transitions. Second operand 34 states. [2018-10-13 13:31:34,144 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-13 13:31:34,670 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-10-13 13:31:35,573 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-13 13:31:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:36,462 INFO L93 Difference]: Finished difference Result 350 states and 1088 transitions. [2018-10-13 13:31:36,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 13:31:36,462 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2018-10-13 13:31:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:36,465 INFO L225 Difference]: With dead ends: 350 [2018-10-13 13:31:36,466 INFO L226 Difference]: Without dead ends: 350 [2018-10-13 13:31:36,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:31:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-10-13 13:31:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 173. [2018-10-13 13:31:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-13 13:31:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 752 transitions. [2018-10-13 13:31:36,470 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 752 transitions. Word has length 39 [2018-10-13 13:31:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:36,470 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 752 transitions. [2018-10-13 13:31:36,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:31:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 752 transitions. [2018-10-13 13:31:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:31:36,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:36,471 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] [2018-10-13 13:31:36,471 INFO L424 AbstractCegarLoop]: === Iteration 26 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:36,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1555659309, now seen corresponding path program 1 times [2018-10-13 13:31:36,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:36,787 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:31:37,780 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 13:31:37,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:37,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:31:37,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:31:37,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:31:37,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:31:37,782 INFO L87 Difference]: Start difference. First operand 173 states and 752 transitions. Second operand 27 states. [2018-10-13 13:31:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:39,489 INFO L93 Difference]: Finished difference Result 264 states and 1080 transitions. [2018-10-13 13:31:39,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:31:39,490 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 39 [2018-10-13 13:31:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:39,493 INFO L225 Difference]: With dead ends: 264 [2018-10-13 13:31:39,493 INFO L226 Difference]: Without dead ends: 264 [2018-10-13 13:31:39,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2018-10-13 13:31:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-13 13:31:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 190. [2018-10-13 13:31:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-13 13:31:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 913 transitions. [2018-10-13 13:31:39,499 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 913 transitions. Word has length 39 [2018-10-13 13:31:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:39,499 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 913 transitions. [2018-10-13 13:31:39,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:31:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 913 transitions. [2018-10-13 13:31:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:31:39,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:39,501 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] [2018-10-13 13:31:39,501 INFO L424 AbstractCegarLoop]: === Iteration 27 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:39,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:39,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1555810314, now seen corresponding path program 1 times [2018-10-13 13:31:39,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:40,068 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-10-13 13:31:40,234 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2018-10-13 13:31:40,378 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-10-13 13:31:40,537 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-13 13:31:40,680 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-13 13:31:40,833 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2018-10-13 13:31:41,020 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2018-10-13 13:31:42,238 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 13:31:42,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:42,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:31:42,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:31:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:31:42,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:31:42,239 INFO L87 Difference]: Start difference. First operand 190 states and 913 transitions. Second operand 35 states. [2018-10-13 13:31:43,551 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2018-10-13 13:31:43,964 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-13 13:31:44,324 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:31:44,459 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-10-13 13:31:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:31:45,436 INFO L93 Difference]: Finished difference Result 366 states and 1440 transitions. [2018-10-13 13:31:45,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:31:45,437 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 39 [2018-10-13 13:31:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:31:45,440 INFO L225 Difference]: With dead ends: 366 [2018-10-13 13:31:45,440 INFO L226 Difference]: Without dead ends: 366 [2018-10-13 13:31:45,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=702, Invalid=2160, Unknown=0, NotChecked=0, Total=2862 [2018-10-13 13:31:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-10-13 13:31:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 212. [2018-10-13 13:31:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-13 13:31:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 1111 transitions. [2018-10-13 13:31:45,447 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 1111 transitions. Word has length 39 [2018-10-13 13:31:45,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:31:45,447 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 1111 transitions. [2018-10-13 13:31:45,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:31:45,447 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 1111 transitions. [2018-10-13 13:31:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:31:45,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:31:45,448 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] [2018-10-13 13:31:45,449 INFO L424 AbstractCegarLoop]: === Iteration 28 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:31:45,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:31:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1553812267, now seen corresponding path program 1 times [2018-10-13 13:31:45,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:31:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:31:45,935 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-10-13 13:31:47,042 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2018-10-13 13:31:47,418 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2018-10-13 13:31:47,754 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2018-10-13 13:31:48,093 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2018-10-13 13:31:48,422 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2018-10-13 13:31:48,697 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2018-10-13 13:31:48,957 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-13 13:31:49,194 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2018-10-13 13:31:49,400 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2018-10-13 13:31:49,593 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2018-10-13 13:31:49,807 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2018-10-13 13:31:50,181 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 13:31:50,181 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:31:50,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:31:50,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:31:50,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:31:50,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:31:50,182 INFO L87 Difference]: Start difference. First operand 212 states and 1111 transitions. Second operand 34 states. [2018-10-13 13:31:51,349 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-13 13:31:51,669 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2018-10-13 13:31:52,055 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2018-10-13 13:31:52,319 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2018-10-13 13:31:52,580 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2018-10-13 13:31:52,930 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2018-10-13 13:31:53,320 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2018-10-13 13:31:53,676 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2018-10-13 13:31:53,885 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-13 13:31:54,161 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-13 13:31:54,713 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2018-10-13 13:31:55,519 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2018-10-13 13:31:55,890 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-13 13:31:56,271 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2018-10-13 13:31:56,646 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2018-10-13 13:31:58,060 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2018-10-13 13:31:58,483 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-10-13 13:31:58,893 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2018-10-13 13:31:59,512 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2018-10-13 13:32:00,923 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-10-13 13:32:01,319 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2018-10-13 13:32:01,753 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2018-10-13 13:32:02,111 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 80 [2018-10-13 13:32:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:02,170 INFO L93 Difference]: Finished difference Result 767 states and 2865 transitions. [2018-10-13 13:32:02,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-13 13:32:02,171 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2018-10-13 13:32:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:02,177 INFO L225 Difference]: With dead ends: 767 [2018-10-13 13:32:02,177 INFO L226 Difference]: Without dead ends: 767 [2018-10-13 13:32:02,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1204, Invalid=2828, Unknown=0, NotChecked=0, Total=4032 [2018-10-13 13:32:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-10-13 13:32:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 232. [2018-10-13 13:32:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-13 13:32:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 1290 transitions. [2018-10-13 13:32:02,189 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 1290 transitions. Word has length 39 [2018-10-13 13:32:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:02,189 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 1290 transitions. [2018-10-13 13:32:02,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:32:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 1290 transitions. [2018-10-13 13:32:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:32:02,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:02,191 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] [2018-10-13 13:32:02,191 INFO L424 AbstractCegarLoop]: === Iteration 29 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:02,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:02,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1605626632, now seen corresponding path program 2 times [2018-10-13 13:32:02,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:03,962 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 13:32:03,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:03,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:32:03,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:32:03,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:32:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:32:03,963 INFO L87 Difference]: Start difference. First operand 232 states and 1290 transitions. Second operand 34 states. [2018-10-13 13:32:05,294 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-13 13:32:05,528 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-10-13 13:32:05,685 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2018-10-13 13:32:06,173 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-10-13 13:32:06,530 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-10-13 13:32:06,981 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-13 13:32:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:08,085 INFO L93 Difference]: Finished difference Result 460 states and 1743 transitions. [2018-10-13 13:32:08,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:32:08,085 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2018-10-13 13:32:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:08,090 INFO L225 Difference]: With dead ends: 460 [2018-10-13 13:32:08,090 INFO L226 Difference]: Without dead ends: 460 [2018-10-13 13:32:08,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=541, Invalid=1529, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:32:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2018-10-13 13:32:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 244. [2018-10-13 13:32:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-13 13:32:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 1398 transitions. [2018-10-13 13:32:08,100 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 1398 transitions. Word has length 39 [2018-10-13 13:32:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:08,101 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 1398 transitions. [2018-10-13 13:32:08,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:32:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 1398 transitions. [2018-10-13 13:32:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:32:08,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:08,102 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] [2018-10-13 13:32:08,102 INFO L424 AbstractCegarLoop]: === Iteration 30 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:08,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1599988317, now seen corresponding path program 1 times [2018-10-13 13:32:08,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:09,903 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2018-10-13 13:32:10,299 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 13:32:10,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:32:10,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2018-10-13 13:32:10,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:32:10,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:32:10,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:32:10,300 INFO L87 Difference]: Start difference. First operand 244 states and 1398 transitions. Second operand 30 states. [2018-10-13 13:32:11,698 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-13 13:32:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:12,654 INFO L93 Difference]: Finished difference Result 426 states and 1993 transitions. [2018-10-13 13:32:12,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:32:12,655 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 39 [2018-10-13 13:32:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:12,659 INFO L225 Difference]: With dead ends: 426 [2018-10-13 13:32:12,659 INFO L226 Difference]: Without dead ends: 426 [2018-10-13 13:32:12,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=442, Invalid=1450, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:32:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-10-13 13:32:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 250. [2018-10-13 13:32:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-13 13:32:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 1452 transitions. [2018-10-13 13:32:12,669 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 1452 transitions. Word has length 39 [2018-10-13 13:32:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:12,670 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 1452 transitions. [2018-10-13 13:32:12,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:32:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 1452 transitions. [2018-10-13 13:32:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-13 13:32:12,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:12,671 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] [2018-10-13 13:32:12,672 INFO L424 AbstractCegarLoop]: === Iteration 31 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:12,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash 312746810, now seen corresponding path program 1 times [2018-10-13 13:32:12,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:13,260 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 13:32:13,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:32:13,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-10-13 13:32:13,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-13 13:32:13,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-13 13:32:13,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2018-10-13 13:32:13,262 INFO L87 Difference]: Start difference. First operand 250 states and 1452 transitions. Second operand 23 states. [2018-10-13 13:32:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:14,847 INFO L93 Difference]: Finished difference Result 410 states and 1944 transitions. [2018-10-13 13:32:14,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:32:14,848 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2018-10-13 13:32:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:14,851 INFO L225 Difference]: With dead ends: 410 [2018-10-13 13:32:14,852 INFO L226 Difference]: Without dead ends: 410 [2018-10-13 13:32:14,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:32:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-10-13 13:32:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 263. [2018-10-13 13:32:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-13 13:32:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 1528 transitions. [2018-10-13 13:32:14,861 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 1528 transitions. Word has length 39 [2018-10-13 13:32:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:14,861 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 1528 transitions. [2018-10-13 13:32:14,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-13 13:32:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 1528 transitions. [2018-10-13 13:32:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:14,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:14,863 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] [2018-10-13 13:32:14,863 INFO L424 AbstractCegarLoop]: === Iteration 32 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:14,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1041009766, now seen corresponding path program 1 times [2018-10-13 13:32:14,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:15,737 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-13 13:32:16,906 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 13:32:16,907 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:16,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:32:16,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:32:16,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:32:16,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:32:16,908 INFO L87 Difference]: Start difference. First operand 263 states and 1528 transitions. Second operand 31 states. [2018-10-13 13:32:17,693 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2018-10-13 13:32:17,848 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-13 13:32:18,131 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2018-10-13 13:32:18,596 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-10-13 13:32:18,742 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2018-10-13 13:32:19,385 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-10-13 13:32:19,626 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-13 13:32:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:20,175 INFO L93 Difference]: Finished difference Result 442 states and 2081 transitions. [2018-10-13 13:32:20,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:32:20,176 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 40 [2018-10-13 13:32:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:20,179 INFO L225 Difference]: With dead ends: 442 [2018-10-13 13:32:20,179 INFO L226 Difference]: Without dead ends: 442 [2018-10-13 13:32:20,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=543, Invalid=1619, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:32:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2018-10-13 13:32:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 284. [2018-10-13 13:32:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-13 13:32:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 1710 transitions. [2018-10-13 13:32:20,188 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 1710 transitions. Word has length 40 [2018-10-13 13:32:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:20,188 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 1710 transitions. [2018-10-13 13:32:20,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:32:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 1710 transitions. [2018-10-13 13:32:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:20,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:20,189 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] [2018-10-13 13:32:20,190 INFO L424 AbstractCegarLoop]: === Iteration 33 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:20,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:20,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1042618480, now seen corresponding path program 1 times [2018-10-13 13:32:20,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:21,737 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 13:32:21,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:21,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:32:21,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:32:21,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:32:21,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:32:21,738 INFO L87 Difference]: Start difference. First operand 284 states and 1710 transitions. Second operand 32 states. [2018-10-13 13:32:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:24,101 INFO L93 Difference]: Finished difference Result 415 states and 2288 transitions. [2018-10-13 13:32:24,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:32:24,101 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2018-10-13 13:32:24,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:24,104 INFO L225 Difference]: With dead ends: 415 [2018-10-13 13:32:24,104 INFO L226 Difference]: Without dead ends: 415 [2018-10-13 13:32:24,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=469, Invalid=1693, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:32:24,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-13 13:32:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 302. [2018-10-13 13:32:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-10-13 13:32:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 1872 transitions. [2018-10-13 13:32:24,114 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 1872 transitions. Word has length 40 [2018-10-13 13:32:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:24,114 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 1872 transitions. [2018-10-13 13:32:24,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:32:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 1872 transitions. [2018-10-13 13:32:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:24,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:24,115 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] [2018-10-13 13:32:24,116 INFO L424 AbstractCegarLoop]: === Iteration 34 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:24,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash -980798183, now seen corresponding path program 1 times [2018-10-13 13:32:24,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:24,845 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 13:32:24,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:24,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:32:24,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:32:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:32:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:32:24,846 INFO L87 Difference]: Start difference. First operand 302 states and 1872 transitions. Second operand 27 states. [2018-10-13 13:32:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:27,061 INFO L93 Difference]: Finished difference Result 468 states and 2421 transitions. [2018-10-13 13:32:27,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:32:27,061 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 40 [2018-10-13 13:32:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:27,064 INFO L225 Difference]: With dead ends: 468 [2018-10-13 13:32:27,064 INFO L226 Difference]: Without dead ends: 468 [2018-10-13 13:32:27,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=488, Invalid=1318, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:32:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2018-10-13 13:32:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 313. [2018-10-13 13:32:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-10-13 13:32:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 1948 transitions. [2018-10-13 13:32:27,073 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 1948 transitions. Word has length 40 [2018-10-13 13:32:27,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:27,073 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 1948 transitions. [2018-10-13 13:32:27,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:32:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 1948 transitions. [2018-10-13 13:32:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:27,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:27,074 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] [2018-10-13 13:32:27,074 INFO L424 AbstractCegarLoop]: === Iteration 35 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:27,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash -985360178, now seen corresponding path program 1 times [2018-10-13 13:32:27,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:27,438 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:32:27,936 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-13 13:32:28,057 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-13 13:32:28,240 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-13 13:32:28,413 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2018-10-13 13:32:28,584 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-13 13:32:29,683 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 13:32:29,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:29,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:32:29,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:32:29,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:32:29,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:32:29,685 INFO L87 Difference]: Start difference. First operand 313 states and 1948 transitions. Second operand 32 states. [2018-10-13 13:32:30,722 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2018-10-13 13:32:30,907 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-13 13:32:31,310 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2018-10-13 13:32:31,651 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2018-10-13 13:32:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:32,662 INFO L93 Difference]: Finished difference Result 491 states and 2670 transitions. [2018-10-13 13:32:32,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:32:32,663 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2018-10-13 13:32:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:32,665 INFO L225 Difference]: With dead ends: 491 [2018-10-13 13:32:32,666 INFO L226 Difference]: Without dead ends: 491 [2018-10-13 13:32:32,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:32:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-10-13 13:32:32,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 333. [2018-10-13 13:32:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-10-13 13:32:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 2128 transitions. [2018-10-13 13:32:32,676 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 2128 transitions. Word has length 40 [2018-10-13 13:32:32,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:32,676 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 2128 transitions. [2018-10-13 13:32:32,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:32:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 2128 transitions. [2018-10-13 13:32:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:32,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:32,678 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] [2018-10-13 13:32:32,678 INFO L424 AbstractCegarLoop]: === Iteration 36 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:32,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash -983930210, now seen corresponding path program 1 times [2018-10-13 13:32:32,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:33,499 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 13:32:33,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:33,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:32:33,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:32:33,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:32:33,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:32:33,500 INFO L87 Difference]: Start difference. First operand 333 states and 2128 transitions. Second operand 30 states. [2018-10-13 13:32:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:35,270 INFO L93 Difference]: Finished difference Result 380 states and 2238 transitions. [2018-10-13 13:32:35,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:32:35,271 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 40 [2018-10-13 13:32:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:35,273 INFO L225 Difference]: With dead ends: 380 [2018-10-13 13:32:35,273 INFO L226 Difference]: Without dead ends: 380 [2018-10-13 13:32:35,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=439, Invalid=1367, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:32:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-13 13:32:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 341. [2018-10-13 13:32:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-10-13 13:32:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 2200 transitions. [2018-10-13 13:32:35,282 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 2200 transitions. Word has length 40 [2018-10-13 13:32:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:35,283 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 2200 transitions. [2018-10-13 13:32:35,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:32:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 2200 transitions. [2018-10-13 13:32:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:35,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:35,283 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] [2018-10-13 13:32:35,284 INFO L424 AbstractCegarLoop]: === Iteration 37 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:35,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -923539881, now seen corresponding path program 1 times [2018-10-13 13:32:35,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:36,722 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 13:32:36,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:36,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:32:36,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:32:36,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:32:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:32:36,723 INFO L87 Difference]: Start difference. First operand 341 states and 2200 transitions. Second operand 26 states. [2018-10-13 13:32:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:38,580 INFO L93 Difference]: Finished difference Result 474 states and 2649 transitions. [2018-10-13 13:32:38,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:32:38,581 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 40 [2018-10-13 13:32:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:38,583 INFO L225 Difference]: With dead ends: 474 [2018-10-13 13:32:38,584 INFO L226 Difference]: Without dead ends: 474 [2018-10-13 13:32:38,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:32:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-10-13 13:32:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 353. [2018-10-13 13:32:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-10-13 13:32:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 2307 transitions. [2018-10-13 13:32:38,593 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 2307 transitions. Word has length 40 [2018-10-13 13:32:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:38,593 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 2307 transitions. [2018-10-13 13:32:38,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:32:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 2307 transitions. [2018-10-13 13:32:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:38,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:38,595 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] [2018-10-13 13:32:38,595 INFO L424 AbstractCegarLoop]: === Iteration 38 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:38,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1649116360, now seen corresponding path program 1 times [2018-10-13 13:32:38,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:32:40,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:32:40,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2018-10-13 13:32:40,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:32:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:32:40,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:32:40,688 INFO L87 Difference]: Start difference. First operand 353 states and 2307 transitions. Second operand 33 states. [2018-10-13 13:32:41,863 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-13 13:32:42,192 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2018-10-13 13:32:42,335 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-13 13:32:42,481 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-13 13:32:42,908 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-13 13:32:43,105 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-13 13:32:44,109 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2018-10-13 13:32:44,276 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-10-13 13:32:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:44,802 INFO L93 Difference]: Finished difference Result 705 states and 4213 transitions. [2018-10-13 13:32:44,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:32:44,803 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 40 [2018-10-13 13:32:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:44,807 INFO L225 Difference]: With dead ends: 705 [2018-10-13 13:32:44,807 INFO L226 Difference]: Without dead ends: 705 [2018-10-13 13:32:44,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=736, Invalid=2126, Unknown=0, NotChecked=0, Total=2862 [2018-10-13 13:32:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2018-10-13 13:32:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 485. [2018-10-13 13:32:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-10-13 13:32:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 3495 transitions. [2018-10-13 13:32:44,824 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 3495 transitions. Word has length 40 [2018-10-13 13:32:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:44,824 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 3495 transitions. [2018-10-13 13:32:44,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:32:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 3495 transitions. [2018-10-13 13:32:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:44,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:44,826 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] [2018-10-13 13:32:44,826 INFO L424 AbstractCegarLoop]: === Iteration 39 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:44,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:44,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1650546328, now seen corresponding path program 1 times [2018-10-13 13:32:44,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:45,709 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-13 13:32:45,846 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-13 13:32:45,980 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-10-13 13:32:46,108 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-10-13 13:32:47,075 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 13:32:47,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:32:47,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:32:47,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:32:47,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:32:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:32:47,077 INFO L87 Difference]: Start difference. First operand 485 states and 3495 transitions. Second operand 33 states. [2018-10-13 13:32:48,094 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-13 13:32:48,425 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-13 13:32:48,578 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-13 13:32:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:32:49,756 INFO L93 Difference]: Finished difference Result 614 states and 3767 transitions. [2018-10-13 13:32:49,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:32:49,756 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 40 [2018-10-13 13:32:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:32:49,761 INFO L225 Difference]: With dead ends: 614 [2018-10-13 13:32:49,761 INFO L226 Difference]: Without dead ends: 614 [2018-10-13 13:32:49,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=536, Invalid=1816, Unknown=0, NotChecked=0, Total=2352 [2018-10-13 13:32:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2018-10-13 13:32:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 485. [2018-10-13 13:32:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-10-13 13:32:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 3495 transitions. [2018-10-13 13:32:49,778 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 3495 transitions. Word has length 40 [2018-10-13 13:32:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:32:49,778 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 3495 transitions. [2018-10-13 13:32:49,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:32:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 3495 transitions. [2018-10-13 13:32:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:32:49,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:32:49,780 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] [2018-10-13 13:32:49,780 INFO L424 AbstractCegarLoop]: === Iteration 40 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:32:49,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:32:49,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1825453261, now seen corresponding path program 1 times [2018-10-13 13:32:49,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:32:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:32:50,244 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-13 13:32:51,118 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-10-13 13:32:51,800 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 76 [2018-10-13 13:32:52,499 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 79 [2018-10-13 13:32:53,200 WARN L178 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 74 [2018-10-13 13:32:53,753 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2018-10-13 13:32:54,364 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 62 [2018-10-13 13:32:54,965 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 57 [2018-10-13 13:32:55,636 WARN L178 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2018-10-13 13:32:56,093 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2018-10-13 13:32:56,604 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 40 [2018-10-13 13:32:56,987 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2018-10-13 13:32:57,326 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 32 [2018-10-13 13:32:57,573 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2018-10-13 13:32:57,767 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 13:32:57,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:32:57,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2018-10-13 13:32:57,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:32:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:32:57,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:32:57,769 INFO L87 Difference]: Start difference. First operand 485 states and 3495 transitions. Second operand 32 states. [2018-10-13 13:32:58,989 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-13 13:32:59,264 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-13 13:32:59,655 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2018-10-13 13:32:59,912 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2018-10-13 13:33:00,131 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-13 13:33:00,318 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-13 13:33:00,558 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-13 13:33:01,053 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2018-10-13 13:33:01,359 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2018-10-13 13:33:01,675 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2018-10-13 13:33:02,284 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2018-10-13 13:33:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:04,062 INFO L93 Difference]: Finished difference Result 1090 states and 6757 transitions. [2018-10-13 13:33:04,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:33:04,062 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2018-10-13 13:33:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:04,068 INFO L225 Difference]: With dead ends: 1090 [2018-10-13 13:33:04,068 INFO L226 Difference]: Without dead ends: 1090 [2018-10-13 13:33:04,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=753, Invalid=2109, Unknown=0, NotChecked=0, Total=2862 [2018-10-13 13:33:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2018-10-13 13:33:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 491. [2018-10-13 13:33:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-10-13 13:33:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 3520 transitions. [2018-10-13 13:33:04,102 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 3520 transitions. Word has length 40 [2018-10-13 13:33:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:04,103 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 3520 transitions. [2018-10-13 13:33:04,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:33:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 3520 transitions. [2018-10-13 13:33:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:33:04,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:04,104 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] [2018-10-13 13:33:04,104 INFO L424 AbstractCegarLoop]: === Iteration 41 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:04,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1879579536, now seen corresponding path program 1 times [2018-10-13 13:33:04,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:04,502 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2018-10-13 13:33:05,040 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 29 [2018-10-13 13:33:05,344 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2018-10-13 13:33:05,553 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 40 [2018-10-13 13:33:05,804 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 44 [2018-10-13 13:33:06,895 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 13:33:06,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:33:06,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:33:06,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:33:06,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:33:06,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:33:06,896 INFO L87 Difference]: Start difference. First operand 491 states and 3520 transitions. Second operand 31 states. [2018-10-13 13:33:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:09,054 INFO L93 Difference]: Finished difference Result 656 states and 3923 transitions. [2018-10-13 13:33:09,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:33:09,055 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 40 [2018-10-13 13:33:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:09,058 INFO L225 Difference]: With dead ends: 656 [2018-10-13 13:33:09,059 INFO L226 Difference]: Without dead ends: 656 [2018-10-13 13:33:09,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 13:33:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2018-10-13 13:33:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 521. [2018-10-13 13:33:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2018-10-13 13:33:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 3790 transitions. [2018-10-13 13:33:09,077 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 3790 transitions. Word has length 40 [2018-10-13 13:33:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:09,077 INFO L481 AbstractCegarLoop]: Abstraction has 521 states and 3790 transitions. [2018-10-13 13:33:09,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:33:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 3790 transitions. [2018-10-13 13:33:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:33:09,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:09,079 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] [2018-10-13 13:33:09,079 INFO L424 AbstractCegarLoop]: === Iteration 42 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:09,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:09,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1095314787, now seen corresponding path program 1 times [2018-10-13 13:33:09,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:10,902 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 13:33:10,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:33:10,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:33:10,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:33:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:33:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:33:10,903 INFO L87 Difference]: Start difference. First operand 521 states and 3790 transitions. Second operand 27 states. [2018-10-13 13:33:11,725 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-13 13:33:11,898 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2018-10-13 13:33:12,233 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-13 13:33:13,196 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2018-10-13 13:33:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:13,273 INFO L93 Difference]: Finished difference Result 716 states and 4363 transitions. [2018-10-13 13:33:13,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:33:13,274 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 40 [2018-10-13 13:33:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:13,277 INFO L225 Difference]: With dead ends: 716 [2018-10-13 13:33:13,277 INFO L226 Difference]: Without dead ends: 715 [2018-10-13 13:33:13,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:33:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2018-10-13 13:33:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 543. [2018-10-13 13:33:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-10-13 13:33:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 3898 transitions. [2018-10-13 13:33:13,291 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 3898 transitions. Word has length 40 [2018-10-13 13:33:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:13,292 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 3898 transitions. [2018-10-13 13:33:13,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:33:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 3898 transitions. [2018-10-13 13:33:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-13 13:33:13,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:13,293 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] [2018-10-13 13:33:13,293 INFO L424 AbstractCegarLoop]: === Iteration 43 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:13,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:13,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1105216662, now seen corresponding path program 1 times [2018-10-13 13:33:13,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:13,758 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 13:33:13,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:33:13,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-13 13:33:13,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-13 13:33:13,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-13 13:33:13,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-10-13 13:33:13,759 INFO L87 Difference]: Start difference. First operand 543 states and 3898 transitions. Second operand 18 states. [2018-10-13 13:33:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:14,883 INFO L93 Difference]: Finished difference Result 1094 states and 6311 transitions. [2018-10-13 13:33:14,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-13 13:33:14,884 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2018-10-13 13:33:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:14,888 INFO L225 Difference]: With dead ends: 1094 [2018-10-13 13:33:14,888 INFO L226 Difference]: Without dead ends: 1094 [2018-10-13 13:33:14,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=496, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:33:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2018-10-13 13:33:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 551. [2018-10-13 13:33:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2018-10-13 13:33:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 3921 transitions. [2018-10-13 13:33:14,907 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 3921 transitions. Word has length 40 [2018-10-13 13:33:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:14,907 INFO L481 AbstractCegarLoop]: Abstraction has 551 states and 3921 transitions. [2018-10-13 13:33:14,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-13 13:33:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 3921 transitions. [2018-10-13 13:33:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:33:14,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:14,926 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-13 13:33:14,926 INFO L424 AbstractCegarLoop]: === Iteration 44 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:14,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:14,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2084594515, now seen corresponding path program 3 times [2018-10-13 13:33:14,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:15,612 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2018-10-13 13:33:15,765 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2018-10-13 13:33:15,957 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2018-10-13 13:33:16,208 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 58 [2018-10-13 13:33:16,554 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 65 [2018-10-13 13:33:16,682 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2018-10-13 13:33:16,819 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2018-10-13 13:33:16,987 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2018-10-13 13:33:17,132 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-13 13:33:17,276 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-10-13 13:33:17,419 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-13 13:33:17,565 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2018-10-13 13:33:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:33:18,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:33:18,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:33:18,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:33:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:33:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:33:18,422 INFO L87 Difference]: Start difference. First operand 551 states and 3921 transitions. Second operand 33 states. [2018-10-13 13:33:19,040 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-10-13 13:33:19,272 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2018-10-13 13:33:19,529 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-13 13:33:19,717 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2018-10-13 13:33:20,194 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-10-13 13:33:20,454 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2018-10-13 13:33:20,753 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-10-13 13:33:20,981 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-13 13:33:21,214 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2018-10-13 13:33:22,191 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2018-10-13 13:33:22,498 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-13 13:33:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:23,199 INFO L93 Difference]: Finished difference Result 1024 states and 6555 transitions. [2018-10-13 13:33:23,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:33:23,200 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 41 [2018-10-13 13:33:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:23,205 INFO L225 Difference]: With dead ends: 1024 [2018-10-13 13:33:23,205 INFO L226 Difference]: Without dead ends: 1024 [2018-10-13 13:33:23,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=574, Invalid=1588, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:33:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2018-10-13 13:33:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 659. [2018-10-13 13:33:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2018-10-13 13:33:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 4893 transitions. [2018-10-13 13:33:23,224 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 4893 transitions. Word has length 41 [2018-10-13 13:33:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:23,224 INFO L481 AbstractCegarLoop]: Abstraction has 659 states and 4893 transitions. [2018-10-13 13:33:23,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:33:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 4893 transitions. [2018-10-13 13:33:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:33:23,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:23,226 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] [2018-10-13 13:33:23,226 INFO L424 AbstractCegarLoop]: === Iteration 45 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:23,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:23,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2086437713, now seen corresponding path program 1 times [2018-10-13 13:33:23,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:23,725 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2018-10-13 13:33:23,886 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2018-10-13 13:33:24,183 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 57 [2018-10-13 13:33:24,570 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 63 [2018-10-13 13:33:25,108 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2018-10-13 13:33:25,352 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 73 [2018-10-13 13:33:25,614 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 77 [2018-10-13 13:33:25,915 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 84 [2018-10-13 13:33:26,208 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 81 [2018-10-13 13:33:26,521 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 78 [2018-10-13 13:33:26,793 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 73 [2018-10-13 13:33:27,070 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 70 [2018-10-13 13:33:27,334 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 65 [2018-10-13 13:33:27,605 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 61 [2018-10-13 13:33:27,859 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 41 [2018-10-13 13:33:28,072 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 31 [2018-10-13 13:33:28,287 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 29 [2018-10-13 13:33:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:33:28,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:33:28,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:33:28,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:33:28,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:33:28,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:33:28,913 INFO L87 Difference]: Start difference. First operand 659 states and 4893 transitions. Second operand 35 states. [2018-10-13 13:33:29,923 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-13 13:33:30,143 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2018-10-13 13:33:30,451 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2018-10-13 13:33:30,888 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2018-10-13 13:33:31,376 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 79 [2018-10-13 13:33:32,257 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 91 [2018-10-13 13:33:32,821 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 85 [2018-10-13 13:33:33,447 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 94 [2018-10-13 13:33:33,930 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2018-10-13 13:33:34,555 WARN L178 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 91 [2018-10-13 13:33:35,140 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 85 [2018-10-13 13:33:35,762 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 87 [2018-10-13 13:33:36,334 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 84 [2018-10-13 13:33:36,947 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 87 [2018-10-13 13:33:37,908 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 94 [2018-10-13 13:33:38,717 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 97 [2018-10-13 13:33:39,688 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 88 [2018-10-13 13:33:40,390 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 88 [2018-10-13 13:33:40,962 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 84 [2018-10-13 13:33:41,619 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 87 [2018-10-13 13:33:42,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:42,593 INFO L93 Difference]: Finished difference Result 2713 states and 20325 transitions. [2018-10-13 13:33:42,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-13 13:33:42,593 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2018-10-13 13:33:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:42,604 INFO L225 Difference]: With dead ends: 2713 [2018-10-13 13:33:42,604 INFO L226 Difference]: Without dead ends: 2713 [2018-10-13 13:33:42,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1127, Invalid=3033, Unknown=0, NotChecked=0, Total=4160 [2018-10-13 13:33:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2018-10-13 13:33:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 987. [2018-10-13 13:33:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2018-10-13 13:33:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 7845 transitions. [2018-10-13 13:33:42,639 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 7845 transitions. Word has length 41 [2018-10-13 13:33:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:42,640 INFO L481 AbstractCegarLoop]: Abstraction has 987 states and 7845 transitions. [2018-10-13 13:33:42,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:33:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 7845 transitions. [2018-10-13 13:33:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:33:42,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:42,641 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] [2018-10-13 13:33:42,641 INFO L424 AbstractCegarLoop]: === Iteration 46 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:42,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2088435760, now seen corresponding path program 1 times [2018-10-13 13:33:42,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:43,211 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2018-10-13 13:33:43,345 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2018-10-13 13:33:44,234 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 13:33:44,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:33:44,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:33:44,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:33:44,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:33:44,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:33:44,235 INFO L87 Difference]: Start difference. First operand 987 states and 7845 transitions. Second operand 28 states. [2018-10-13 13:33:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:33:45,931 INFO L93 Difference]: Finished difference Result 1176 states and 8644 transitions. [2018-10-13 13:33:45,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:33:45,932 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2018-10-13 13:33:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:33:45,937 INFO L225 Difference]: With dead ends: 1176 [2018-10-13 13:33:45,937 INFO L226 Difference]: Without dead ends: 1176 [2018-10-13 13:33:45,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:33:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2018-10-13 13:33:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 992. [2018-10-13 13:33:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2018-10-13 13:33:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 7869 transitions. [2018-10-13 13:33:45,960 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 7869 transitions. Word has length 41 [2018-10-13 13:33:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:33:45,960 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 7869 transitions. [2018-10-13 13:33:45,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:33:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 7869 transitions. [2018-10-13 13:33:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:33:45,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:33:45,962 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] [2018-10-13 13:33:45,963 INFO L424 AbstractCegarLoop]: === Iteration 47 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:33:45,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:33:45,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2034871542, now seen corresponding path program 1 times [2018-10-13 13:33:45,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:33:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:33:47,003 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2018-10-13 13:33:47,420 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2018-10-13 13:33:47,737 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2018-10-13 13:33:48,084 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2018-10-13 13:33:48,755 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 89 [2018-10-13 13:33:49,564 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 92 [2018-10-13 13:33:50,183 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 87 [2018-10-13 13:33:50,816 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 82 [2018-10-13 13:33:51,551 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 76 [2018-10-13 13:33:52,216 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 71 [2018-10-13 13:33:52,976 WARN L178 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 66 [2018-10-13 13:33:53,623 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 62 [2018-10-13 13:33:54,140 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 56 [2018-10-13 13:33:54,619 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2018-10-13 13:33:55,066 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2018-10-13 13:33:55,341 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2018-10-13 13:33:55,661 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2018-10-13 13:33:55,982 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 13:33:55,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:33:55,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:33:55,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:33:55,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:33:55,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1106, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:33:55,983 INFO L87 Difference]: Start difference. First operand 992 states and 7869 transitions. Second operand 35 states. [2018-10-13 13:33:57,023 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-13 13:33:57,220 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-10-13 13:33:57,446 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2018-10-13 13:33:57,751 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2018-10-13 13:33:58,059 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2018-10-13 13:33:58,478 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2018-10-13 13:33:59,022 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 80 [2018-10-13 13:33:59,690 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 95 [2018-10-13 13:34:00,207 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 107 [2018-10-13 13:34:00,879 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 106 [2018-10-13 13:34:01,489 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 106 [2018-10-13 13:34:02,109 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 105 [2018-10-13 13:34:02,738 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 104 [2018-10-13 13:34:03,221 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 102 [2018-10-13 13:34:03,734 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 103 [2018-10-13 13:34:04,354 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 97 [2018-10-13 13:34:05,024 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 101 [2018-10-13 13:34:05,656 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 93 [2018-10-13 13:34:06,257 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 96 [2018-10-13 13:34:06,870 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 92 [2018-10-13 13:34:07,535 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 105 [2018-10-13 13:34:08,086 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 83 [2018-10-13 13:34:08,753 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 104 [2018-10-13 13:34:09,446 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 97 [2018-10-13 13:34:09,975 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 101 [2018-10-13 13:34:10,646 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 106 [2018-10-13 13:34:11,311 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 105 [2018-10-13 13:34:11,957 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 103 [2018-10-13 13:34:12,513 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 102 [2018-10-13 13:34:13,316 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 93 [2018-10-13 13:34:15,941 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 86 [2018-10-13 13:34:16,932 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 108 [2018-10-13 13:34:17,550 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 107 [2018-10-13 13:34:18,035 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 104 [2018-10-13 13:34:18,956 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 109 [2018-10-13 13:34:19,573 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 108 [2018-10-13 13:34:20,272 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 99 [2018-10-13 13:34:20,893 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 106 [2018-10-13 13:34:21,402 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 105 [2018-10-13 13:34:22,776 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 91 [2018-10-13 13:34:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:34:22,959 INFO L93 Difference]: Finished difference Result 2559 states and 17366 transitions. [2018-10-13 13:34:22,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-13 13:34:22,959 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2018-10-13 13:34:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:34:22,968 INFO L225 Difference]: With dead ends: 2559 [2018-10-13 13:34:22,968 INFO L226 Difference]: Without dead ends: 2559 [2018-10-13 13:34:22,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=1955, Invalid=4525, Unknown=0, NotChecked=0, Total=6480 [2018-10-13 13:34:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2018-10-13 13:34:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1004. [2018-10-13 13:34:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2018-10-13 13:34:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 7977 transitions. [2018-10-13 13:34:23,004 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 7977 transitions. Word has length 41 [2018-10-13 13:34:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:34:23,005 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 7977 transitions. [2018-10-13 13:34:23,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:34:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 7977 transitions. [2018-10-13 13:34:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:34:23,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:34:23,007 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] [2018-10-13 13:34:23,007 INFO L424 AbstractCegarLoop]: === Iteration 48 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:34:23,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:34:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2036613707, now seen corresponding path program 1 times [2018-10-13 13:34:23,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:34:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:34:24,050 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2018-10-13 13:34:24,188 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-13 13:34:24,344 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2018-10-13 13:34:24,488 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-13 13:34:24,629 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-10-13 13:34:24,765 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2018-10-13 13:34:26,020 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 13:34:26,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:34:26,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:34:26,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:34:26,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:34:26,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:34:26,021 INFO L87 Difference]: Start difference. First operand 1004 states and 7977 transitions. Second operand 35 states. [2018-10-13 13:34:26,616 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2018-10-13 13:34:26,806 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2018-10-13 13:34:27,023 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2018-10-13 13:34:27,266 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-13 13:34:27,514 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2018-10-13 13:34:28,077 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2018-10-13 13:34:28,336 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2018-10-13 13:34:28,664 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2018-10-13 13:34:28,981 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-13 13:34:29,273 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2018-10-13 13:34:29,576 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2018-10-13 13:34:29,869 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2018-10-13 13:34:30,187 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2018-10-13 13:34:30,513 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2018-10-13 13:34:30,887 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-13 13:34:31,207 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2018-10-13 13:34:31,562 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2018-10-13 13:34:31,846 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-13 13:34:32,347 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2018-10-13 13:34:32,761 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-13 13:34:33,424 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2018-10-13 13:34:33,801 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2018-10-13 13:34:34,167 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2018-10-13 13:34:34,427 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2018-10-13 13:34:35,664 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-13 13:34:36,029 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2018-10-13 13:34:36,279 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-10-13 13:34:36,552 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2018-10-13 13:34:36,840 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2018-10-13 13:34:37,124 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2018-10-13 13:34:37,469 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-13 13:34:37,798 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2018-10-13 13:34:38,099 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2018-10-13 13:34:38,396 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2018-10-13 13:34:38,697 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2018-10-13 13:34:38,983 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 60 [2018-10-13 13:34:39,375 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2018-10-13 13:34:39,677 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2018-10-13 13:34:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:34:39,786 INFO L93 Difference]: Finished difference Result 2181 states and 15177 transitions. [2018-10-13 13:34:39,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-13 13:34:39,787 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2018-10-13 13:34:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:34:39,796 INFO L225 Difference]: With dead ends: 2181 [2018-10-13 13:34:39,796 INFO L226 Difference]: Without dead ends: 2181 [2018-10-13 13:34:39,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1745, Invalid=3805, Unknown=0, NotChecked=0, Total=5550 [2018-10-13 13:34:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2018-10-13 13:34:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 1136. [2018-10-13 13:34:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2018-10-13 13:34:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 9165 transitions. [2018-10-13 13:34:39,845 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 9165 transitions. Word has length 41 [2018-10-13 13:34:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:34:39,846 INFO L481 AbstractCegarLoop]: Abstraction has 1136 states and 9165 transitions. [2018-10-13 13:34:39,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:34:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 9165 transitions. [2018-10-13 13:34:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:34:39,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:34:39,848 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] [2018-10-13 13:34:39,849 INFO L424 AbstractCegarLoop]: === Iteration 49 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:34:39,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:34:39,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2042259710, now seen corresponding path program 1 times [2018-10-13 13:34:39,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:34:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:34:40,490 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-13 13:34:40,654 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2018-10-13 13:34:40,840 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-13 13:34:41,039 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-10-13 13:34:41,254 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-13 13:34:41,441 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2018-10-13 13:34:41,625 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2018-10-13 13:34:41,794 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-13 13:34:41,966 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-13 13:34:42,124 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2018-10-13 13:34:42,277 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2018-10-13 13:34:42,564 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 13:34:42,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:34:42,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:34:42,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:34:42,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:34:42,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:34:42,565 INFO L87 Difference]: Start difference. First operand 1136 states and 9165 transitions. Second operand 30 states. [2018-10-13 13:34:43,387 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-13 13:34:43,905 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2018-10-13 13:34:44,272 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2018-10-13 13:34:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:34:45,203 INFO L93 Difference]: Finished difference Result 1454 states and 11208 transitions. [2018-10-13 13:34:45,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:34:45,204 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 41 [2018-10-13 13:34:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:34:45,209 INFO L225 Difference]: With dead ends: 1454 [2018-10-13 13:34:45,209 INFO L226 Difference]: Without dead ends: 1454 [2018-10-13 13:34:45,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=429, Invalid=1463, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:34:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2018-10-13 13:34:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1214. [2018-10-13 13:34:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2018-10-13 13:34:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 9867 transitions. [2018-10-13 13:34:45,275 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 9867 transitions. Word has length 41 [2018-10-13 13:34:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:34:45,276 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 9867 transitions. [2018-10-13 13:34:45,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:34:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 9867 transitions. [2018-10-13 13:34:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:34:45,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:34:45,278 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] [2018-10-13 13:34:45,278 INFO L424 AbstractCegarLoop]: === Iteration 50 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:34:45,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:34:45,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2077206347, now seen corresponding path program 2 times [2018-10-13 13:34:45,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:34:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:34:45,712 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2018-10-13 13:34:45,968 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 53 [2018-10-13 13:34:46,292 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 64 [2018-10-13 13:34:46,632 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 65 [2018-10-13 13:34:47,012 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 67 [2018-10-13 13:34:47,391 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 71 [2018-10-13 13:34:47,790 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 76 [2018-10-13 13:34:48,150 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 69 [2018-10-13 13:34:48,543 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 74 [2018-10-13 13:34:48,976 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 70 [2018-10-13 13:34:49,386 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 66 [2018-10-13 13:34:49,860 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 58 [2018-10-13 13:34:50,279 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 56 [2018-10-13 13:34:50,683 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 54 [2018-10-13 13:34:51,080 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 46 [2018-10-13 13:34:51,250 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2018-10-13 13:34:51,449 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2018-10-13 13:34:52,115 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 20 [2018-10-13 13:34:52,376 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 13:34:52,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:34:52,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:34:52,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:34:52,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:34:52,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1106, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:34:52,377 INFO L87 Difference]: Start difference. First operand 1214 states and 9867 transitions. Second operand 35 states. [2018-10-13 13:34:53,345 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2018-10-13 13:34:53,615 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-13 13:34:53,918 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2018-10-13 13:34:54,248 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2018-10-13 13:34:54,640 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 64 [2018-10-13 13:34:55,063 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 73 [2018-10-13 13:34:55,763 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 74 [2018-10-13 13:34:56,216 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2018-10-13 13:34:56,661 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2018-10-13 13:34:57,100 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 69 [2018-10-13 13:34:57,569 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 78 [2018-10-13 13:34:58,017 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 73 [2018-10-13 13:34:58,462 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 75 [2018-10-13 13:34:58,929 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2018-10-13 13:34:59,305 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 67 [2018-10-13 13:34:59,795 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 76 [2018-10-13 13:35:00,172 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 67 [2018-10-13 13:35:00,631 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 75 [2018-10-13 13:35:01,111 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 74 [2018-10-13 13:35:01,580 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 73 [2018-10-13 13:35:02,070 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 81 [2018-10-13 13:35:02,519 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 73 [2018-10-13 13:35:03,016 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 79 [2018-10-13 13:35:03,546 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 77 [2018-10-13 13:35:04,229 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 80 [2018-10-13 13:35:04,741 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 79 [2018-10-13 13:35:05,226 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 78 [2018-10-13 13:35:05,674 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 75 [2018-10-13 13:35:06,132 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 76 [2018-10-13 13:35:06,590 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2018-10-13 13:35:07,033 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 75 [2018-10-13 13:35:07,488 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 75 [2018-10-13 13:35:07,918 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 73 [2018-10-13 13:35:08,354 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 73 [2018-10-13 13:35:08,830 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 74 [2018-10-13 13:35:09,342 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 77 [2018-10-13 13:35:10,223 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 76 [2018-10-13 13:35:10,869 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 74 [2018-10-13 13:35:11,414 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 81 [2018-10-13 13:35:11,843 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 72 [2018-10-13 13:35:12,676 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 78 [2018-10-13 13:35:13,240 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 76 [2018-10-13 13:35:13,693 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 74 [2018-10-13 13:35:14,135 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 72 [2018-10-13 13:35:14,586 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 76 [2018-10-13 13:35:15,042 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 76 [2018-10-13 13:35:15,498 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 77 [2018-10-13 13:35:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:16,887 INFO L93 Difference]: Finished difference Result 4820 states and 37837 transitions. [2018-10-13 13:35:16,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-13 13:35:16,888 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2018-10-13 13:35:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:16,904 INFO L225 Difference]: With dead ends: 4820 [2018-10-13 13:35:16,904 INFO L226 Difference]: Without dead ends: 4819 [2018-10-13 13:35:16,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=2543, Invalid=5289, Unknown=0, NotChecked=0, Total=7832 [2018-10-13 13:35:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2018-10-13 13:35:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 1291. [2018-10-13 13:35:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2018-10-13 13:35:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 10447 transitions. [2018-10-13 13:35:16,989 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 10447 transitions. Word has length 41 [2018-10-13 13:35:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:16,990 INFO L481 AbstractCegarLoop]: Abstraction has 1291 states and 10447 transitions. [2018-10-13 13:35:16,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:35:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 10447 transitions. [2018-10-13 13:35:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:16,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:16,992 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] [2018-10-13 13:35:16,992 INFO L424 AbstractCegarLoop]: === Iteration 51 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:16,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:16,992 INFO L82 PathProgramCache]: Analyzing trace with hash -339972459, now seen corresponding path program 1 times [2018-10-13 13:35:16,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:17,702 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 13:35:17,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:35:17,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-13 13:35:17,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:35:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:35:17,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:35:17,703 INFO L87 Difference]: Start difference. First operand 1291 states and 10447 transitions. Second operand 24 states. [2018-10-13 13:35:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:19,116 INFO L93 Difference]: Finished difference Result 1488 states and 11431 transitions. [2018-10-13 13:35:19,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:35:19,117 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 41 [2018-10-13 13:35:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:19,122 INFO L225 Difference]: With dead ends: 1488 [2018-10-13 13:35:19,122 INFO L226 Difference]: Without dead ends: 1488 [2018-10-13 13:35:19,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:35:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2018-10-13 13:35:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1326. [2018-10-13 13:35:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2018-10-13 13:35:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 10722 transitions. [2018-10-13 13:35:19,152 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 10722 transitions. Word has length 41 [2018-10-13 13:35:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:19,152 INFO L481 AbstractCegarLoop]: Abstraction has 1326 states and 10722 transitions. [2018-10-13 13:35:19,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:35:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 10722 transitions. [2018-10-13 13:35:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:19,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:19,155 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] [2018-10-13 13:35:19,155 INFO L424 AbstractCegarLoop]: === Iteration 52 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:19,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:19,155 INFO L82 PathProgramCache]: Analyzing trace with hash -477700224, now seen corresponding path program 1 times [2018-10-13 13:35:19,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:20,484 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 13:35:20,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:35:20,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:35:20,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:35:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:35:20,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:35:20,485 INFO L87 Difference]: Start difference. First operand 1326 states and 10722 transitions. Second operand 31 states. [2018-10-13 13:35:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:23,024 INFO L93 Difference]: Finished difference Result 1675 states and 12518 transitions. [2018-10-13 13:35:23,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:35:23,025 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 41 [2018-10-13 13:35:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:23,031 INFO L225 Difference]: With dead ends: 1675 [2018-10-13 13:35:23,032 INFO L226 Difference]: Without dead ends: 1675 [2018-10-13 13:35:23,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=566, Invalid=1690, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:35:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2018-10-13 13:35:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1358. [2018-10-13 13:35:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2018-10-13 13:35:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 10995 transitions. [2018-10-13 13:35:23,063 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 10995 transitions. Word has length 41 [2018-10-13 13:35:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:23,063 INFO L481 AbstractCegarLoop]: Abstraction has 1358 states and 10995 transitions. [2018-10-13 13:35:23,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:35:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 10995 transitions. [2018-10-13 13:35:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:23,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:23,066 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] [2018-10-13 13:35:23,066 INFO L424 AbstractCegarLoop]: === Iteration 53 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:23,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:23,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1435034903, now seen corresponding path program 1 times [2018-10-13 13:35:23,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:23,885 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2018-10-13 13:35:24,167 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-10-13 13:35:24,305 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-13 13:35:24,472 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2018-10-13 13:35:24,815 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 79 [2018-10-13 13:35:25,156 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 81 [2018-10-13 13:35:25,471 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 75 [2018-10-13 13:35:25,785 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 69 [2018-10-13 13:35:26,088 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 62 [2018-10-13 13:35:26,327 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 57 [2018-10-13 13:35:26,716 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2018-10-13 13:35:27,030 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2018-10-13 13:35:27,346 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2018-10-13 13:35:27,583 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2018-10-13 13:35:27,890 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 13:35:27,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:35:27,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:35:27,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:35:27,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:35:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:35:27,891 INFO L87 Difference]: Start difference. First operand 1358 states and 10995 transitions. Second operand 32 states. [2018-10-13 13:35:29,027 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-10-13 13:35:29,373 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2018-10-13 13:35:29,743 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-10-13 13:35:30,054 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2018-10-13 13:35:30,328 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2018-10-13 13:35:30,579 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2018-10-13 13:35:30,836 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2018-10-13 13:35:31,129 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2018-10-13 13:35:31,419 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2018-10-13 13:35:31,589 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-13 13:35:31,852 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2018-10-13 13:35:32,314 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-10-13 13:35:32,991 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2018-10-13 13:35:33,296 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2018-10-13 13:35:33,644 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 81 [2018-10-13 13:35:34,068 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2018-10-13 13:35:34,455 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2018-10-13 13:35:34,898 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-13 13:35:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:37,275 INFO L93 Difference]: Finished difference Result 2507 states and 17946 transitions. [2018-10-13 13:35:37,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-13 13:35:37,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 41 [2018-10-13 13:35:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:37,284 INFO L225 Difference]: With dead ends: 2507 [2018-10-13 13:35:37,284 INFO L226 Difference]: Without dead ends: 2507 [2018-10-13 13:35:37,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=912, Invalid=2280, Unknown=0, NotChecked=0, Total=3192 [2018-10-13 13:35:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2018-10-13 13:35:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1572. [2018-10-13 13:35:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2018-10-13 13:35:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 12906 transitions. [2018-10-13 13:35:37,331 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 12906 transitions. Word has length 41 [2018-10-13 13:35:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:37,331 INFO L481 AbstractCegarLoop]: Abstraction has 1572 states and 12906 transitions. [2018-10-13 13:35:37,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:35:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 12906 transitions. [2018-10-13 13:35:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:37,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:37,334 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] [2018-10-13 13:35:37,334 INFO L424 AbstractCegarLoop]: === Iteration 54 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:37,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash -413306170, now seen corresponding path program 1 times [2018-10-13 13:35:37,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:35:38,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:35:38,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2018-10-13 13:35:38,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:35:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:35:38,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:35:38,477 INFO L87 Difference]: Start difference. First operand 1572 states and 12906 transitions. Second operand 33 states. [2018-10-13 13:35:39,791 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-13 13:35:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:40,986 INFO L93 Difference]: Finished difference Result 2620 states and 20001 transitions. [2018-10-13 13:35:40,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:35:40,987 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 41 [2018-10-13 13:35:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:40,996 INFO L225 Difference]: With dead ends: 2620 [2018-10-13 13:35:40,996 INFO L226 Difference]: Without dead ends: 2620 [2018-10-13 13:35:40,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=511, Invalid=1745, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:35:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2018-10-13 13:35:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1652. [2018-10-13 13:35:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2018-10-13 13:35:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 13626 transitions. [2018-10-13 13:35:41,052 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 13626 transitions. Word has length 41 [2018-10-13 13:35:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:41,052 INFO L481 AbstractCegarLoop]: Abstraction has 1652 states and 13626 transitions. [2018-10-13 13:35:41,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:35:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 13626 transitions. [2018-10-13 13:35:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:41,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:41,056 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] [2018-10-13 13:35:41,056 INFO L424 AbstractCegarLoop]: === Iteration 55 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:41,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:41,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1115881653, now seen corresponding path program 3 times [2018-10-13 13:35:41,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:41,414 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:35:42,002 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2018-10-13 13:35:42,147 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2018-10-13 13:35:42,279 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2018-10-13 13:35:43,175 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 13:35:43,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:35:43,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:35:43,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:35:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:35:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:35:43,176 INFO L87 Difference]: Start difference. First operand 1652 states and 13626 transitions. Second operand 31 states. [2018-10-13 13:35:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:45,255 INFO L93 Difference]: Finished difference Result 2082 states and 15605 transitions. [2018-10-13 13:35:45,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:35:45,255 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 41 [2018-10-13 13:35:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:45,262 INFO L225 Difference]: With dead ends: 2082 [2018-10-13 13:35:45,262 INFO L226 Difference]: Without dead ends: 2082 [2018-10-13 13:35:45,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=420, Invalid=1140, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 13:35:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2018-10-13 13:35:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1496. [2018-10-13 13:35:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2018-10-13 13:35:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 12222 transitions. [2018-10-13 13:35:45,310 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 12222 transitions. Word has length 41 [2018-10-13 13:35:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:45,311 INFO L481 AbstractCegarLoop]: Abstraction has 1496 states and 12222 transitions. [2018-10-13 13:35:45,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:35:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 12222 transitions. [2018-10-13 13:35:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:45,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:45,314 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] [2018-10-13 13:35:45,315 INFO L424 AbstractCegarLoop]: === Iteration 56 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:45,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:45,315 INFO L82 PathProgramCache]: Analyzing trace with hash 9523813, now seen corresponding path program 1 times [2018-10-13 13:35:45,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:46,734 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 13:35:46,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:35:46,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2018-10-13 13:35:46,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:35:46,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:35:46,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:35:46,735 INFO L87 Difference]: Start difference. First operand 1496 states and 12222 transitions. Second operand 28 states. [2018-10-13 13:35:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:48,423 INFO L93 Difference]: Finished difference Result 1871 states and 14329 transitions. [2018-10-13 13:35:48,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:35:48,423 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2018-10-13 13:35:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:48,430 INFO L225 Difference]: With dead ends: 1871 [2018-10-13 13:35:48,430 INFO L226 Difference]: Without dead ends: 1871 [2018-10-13 13:35:48,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 13:35:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2018-10-13 13:35:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1518. [2018-10-13 13:35:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2018-10-13 13:35:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 12420 transitions. [2018-10-13 13:35:48,465 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 12420 transitions. Word has length 41 [2018-10-13 13:35:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:48,466 INFO L481 AbstractCegarLoop]: Abstraction has 1518 states and 12420 transitions. [2018-10-13 13:35:48,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:35:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 12420 transitions. [2018-10-13 13:35:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:48,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:48,468 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] [2018-10-13 13:35:48,468 INFO L424 AbstractCegarLoop]: === Iteration 57 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:48,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1480381331, now seen corresponding path program 1 times [2018-10-13 13:35:48,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:49,364 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 13:35:49,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:35:49,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-13 13:35:49,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:35:49,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:35:49,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:35:49,365 INFO L87 Difference]: Start difference. First operand 1518 states and 12420 transitions. Second operand 26 states. [2018-10-13 13:35:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:50,939 INFO L93 Difference]: Finished difference Result 1840 states and 13833 transitions. [2018-10-13 13:35:50,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:35:50,939 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 41 [2018-10-13 13:35:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:50,945 INFO L225 Difference]: With dead ends: 1840 [2018-10-13 13:35:50,945 INFO L226 Difference]: Without dead ends: 1840 [2018-10-13 13:35:50,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=339, Invalid=1067, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:35:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2018-10-13 13:35:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1536. [2018-10-13 13:35:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1536 states. [2018-10-13 13:35:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 12582 transitions. [2018-10-13 13:35:50,984 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 12582 transitions. Word has length 41 [2018-10-13 13:35:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:50,984 INFO L481 AbstractCegarLoop]: Abstraction has 1536 states and 12582 transitions. [2018-10-13 13:35:50,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:35:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 12582 transitions. [2018-10-13 13:35:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:50,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:50,987 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] [2018-10-13 13:35:50,987 INFO L424 AbstractCegarLoop]: === Iteration 58 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:50,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:50,987 INFO L82 PathProgramCache]: Analyzing trace with hash -720467637, now seen corresponding path program 4 times [2018-10-13 13:35:50,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:51,274 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:35:53,077 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 13:35:53,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:35:53,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:35:53,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:35:53,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:35:53,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:35:53,078 INFO L87 Difference]: Start difference. First operand 1536 states and 12582 transitions. Second operand 33 states. [2018-10-13 13:35:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:54,726 INFO L93 Difference]: Finished difference Result 1642 states and 13023 transitions. [2018-10-13 13:35:54,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:35:54,727 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 41 [2018-10-13 13:35:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:54,733 INFO L225 Difference]: With dead ends: 1642 [2018-10-13 13:35:54,733 INFO L226 Difference]: Without dead ends: 1642 [2018-10-13 13:35:54,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:35:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2018-10-13 13:35:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1249. [2018-10-13 13:35:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2018-10-13 13:35:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 10020 transitions. [2018-10-13 13:35:54,761 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 10020 transitions. Word has length 41 [2018-10-13 13:35:54,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:54,761 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 10020 transitions. [2018-10-13 13:35:54,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:35:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 10020 transitions. [2018-10-13 13:35:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-13 13:35:54,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:54,764 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] [2018-10-13 13:35:54,764 INFO L424 AbstractCegarLoop]: === Iteration 59 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:54,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:54,764 INFO L82 PathProgramCache]: Analyzing trace with hash -98021700, now seen corresponding path program 1 times [2018-10-13 13:35:54,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:55,598 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 13:35:55,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:35:55,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-10-13 13:35:55,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-13 13:35:55,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-13 13:35:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-10-13 13:35:55,600 INFO L87 Difference]: Start difference. First operand 1249 states and 10020 transitions. Second operand 19 states. [2018-10-13 13:35:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:57,011 INFO L93 Difference]: Finished difference Result 1752 states and 12365 transitions. [2018-10-13 13:35:57,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-13 13:35:57,012 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2018-10-13 13:35:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:57,018 INFO L225 Difference]: With dead ends: 1752 [2018-10-13 13:35:57,018 INFO L226 Difference]: Without dead ends: 1752 [2018-10-13 13:35:57,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:35:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2018-10-13 13:35:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1258. [2018-10-13 13:35:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2018-10-13 13:35:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 10045 transitions. [2018-10-13 13:35:57,049 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 10045 transitions. Word has length 41 [2018-10-13 13:35:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:57,050 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 10045 transitions. [2018-10-13 13:35:57,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-13 13:35:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 10045 transitions. [2018-10-13 13:35:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:35:57,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:57,052 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 13:35:57,052 INFO L424 AbstractCegarLoop]: === Iteration 60 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:57,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1884567365, now seen corresponding path program 1 times [2018-10-13 13:35:57,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:35:57,651 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2018-10-13 13:35:58,147 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 13:35:58,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:35:58,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-13 13:35:58,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-13 13:35:58,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-13 13:35:58,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2018-10-13 13:35:58,148 INFO L87 Difference]: Start difference. First operand 1258 states and 10045 transitions. Second operand 23 states. [2018-10-13 13:35:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:35:59,721 INFO L93 Difference]: Finished difference Result 1661 states and 12546 transitions. [2018-10-13 13:35:59,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:35:59,721 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2018-10-13 13:35:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:35:59,727 INFO L225 Difference]: With dead ends: 1661 [2018-10-13 13:35:59,727 INFO L226 Difference]: Without dead ends: 1661 [2018-10-13 13:35:59,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=374, Invalid=958, Unknown=0, NotChecked=0, Total=1332 [2018-10-13 13:35:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2018-10-13 13:35:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1466. [2018-10-13 13:35:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2018-10-13 13:35:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 11805 transitions. [2018-10-13 13:35:59,764 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 11805 transitions. Word has length 42 [2018-10-13 13:35:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:35:59,764 INFO L481 AbstractCegarLoop]: Abstraction has 1466 states and 11805 transitions. [2018-10-13 13:35:59,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-13 13:35:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 11805 transitions. [2018-10-13 13:35:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:35:59,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:35:59,766 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] [2018-10-13 13:35:59,767 INFO L424 AbstractCegarLoop]: === Iteration 61 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:35:59,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:35:59,767 INFO L82 PathProgramCache]: Analyzing trace with hash 255178963, now seen corresponding path program 1 times [2018-10-13 13:35:59,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:35:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:00,290 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2018-10-13 13:36:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:36:01,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:01,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:36:01,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:36:01,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:36:01,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:36:01,811 INFO L87 Difference]: Start difference. First operand 1466 states and 11805 transitions. Second operand 32 states. [2018-10-13 13:36:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:03,476 INFO L93 Difference]: Finished difference Result 1521 states and 11861 transitions. [2018-10-13 13:36:03,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:36:03,477 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 42 [2018-10-13 13:36:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:03,482 INFO L225 Difference]: With dead ends: 1521 [2018-10-13 13:36:03,482 INFO L226 Difference]: Without dead ends: 1521 [2018-10-13 13:36:03,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:36:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2018-10-13 13:36:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1416. [2018-10-13 13:36:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2018-10-13 13:36:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 11355 transitions. [2018-10-13 13:36:03,509 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 11355 transitions. Word has length 42 [2018-10-13 13:36:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:03,510 INFO L481 AbstractCegarLoop]: Abstraction has 1416 states and 11355 transitions. [2018-10-13 13:36:03,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:36:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 11355 transitions. [2018-10-13 13:36:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:03,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:03,512 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] [2018-10-13 13:36:03,512 INFO L424 AbstractCegarLoop]: === Iteration 62 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:03,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash 316999260, now seen corresponding path program 1 times [2018-10-13 13:36:03,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:04,420 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 13:36:04,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:04,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:36:04,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:36:04,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:36:04,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:36:04,421 INFO L87 Difference]: Start difference. First operand 1416 states and 11355 transitions. Second operand 26 states. [2018-10-13 13:36:05,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:05,068 INFO L93 Difference]: Finished difference Result 1517 states and 11902 transitions. [2018-10-13 13:36:05,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:36:05,069 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2018-10-13 13:36:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:05,074 INFO L225 Difference]: With dead ends: 1517 [2018-10-13 13:36:05,075 INFO L226 Difference]: Without dead ends: 1517 [2018-10-13 13:36:05,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:36:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2018-10-13 13:36:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1472. [2018-10-13 13:36:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2018-10-13 13:36:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 11858 transitions. [2018-10-13 13:36:05,102 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 11858 transitions. Word has length 42 [2018-10-13 13:36:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:05,103 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 11858 transitions. [2018-10-13 13:36:05,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:36:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 11858 transitions. [2018-10-13 13:36:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:05,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:05,106 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] [2018-10-13 13:36:05,106 INFO L424 AbstractCegarLoop]: === Iteration 63 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:05,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1403881827, now seen corresponding path program 1 times [2018-10-13 13:36:05,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:05,346 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2018-10-13 13:36:05,943 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-10-13 13:36:06,251 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 17 [2018-10-13 13:36:06,390 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 26 [2018-10-13 13:36:06,662 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 24 [2018-10-13 13:36:06,812 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 28 [2018-10-13 13:36:06,968 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 31 [2018-10-13 13:36:07,135 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 35 [2018-10-13 13:36:07,321 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 38 [2018-10-13 13:36:07,548 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2018-10-13 13:36:07,739 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2018-10-13 13:36:07,940 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2018-10-13 13:36:08,145 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2018-10-13 13:36:08,413 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2018-10-13 13:36:08,559 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-10-13 13:36:08,708 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-10-13 13:36:08,847 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-10-13 13:36:08,980 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-10-13 13:36:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:36:09,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:09,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:36:09,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:36:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:36:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:36:09,749 INFO L87 Difference]: Start difference. First operand 1472 states and 11858 transitions. Second operand 31 states. [2018-10-13 13:36:10,629 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-13 13:36:10,957 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-13 13:36:11,162 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-13 13:36:11,792 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-13 13:36:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:12,108 INFO L93 Difference]: Finished difference Result 1651 states and 12475 transitions. [2018-10-13 13:36:12,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:36:12,109 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 42 [2018-10-13 13:36:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:12,115 INFO L225 Difference]: With dead ends: 1651 [2018-10-13 13:36:12,115 INFO L226 Difference]: Without dead ends: 1651 [2018-10-13 13:36:12,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:36:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2018-10-13 13:36:12,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1330. [2018-10-13 13:36:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2018-10-13 13:36:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 10580 transitions. [2018-10-13 13:36:12,142 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 10580 transitions. Word has length 42 [2018-10-13 13:36:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:12,143 INFO L481 AbstractCegarLoop]: Abstraction has 1330 states and 10580 transitions. [2018-10-13 13:36:12,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:36:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 10580 transitions. [2018-10-13 13:36:12,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:12,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:12,145 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] [2018-10-13 13:36:12,146 INFO L424 AbstractCegarLoop]: === Iteration 64 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:12,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:12,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2080308875, now seen corresponding path program 1 times [2018-10-13 13:36:12,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:12,801 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-13 13:36:13,050 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-13 13:36:13,187 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-13 13:36:13,319 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-13 13:36:13,454 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-10-13 13:36:13,626 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-13 13:36:13,792 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-10-13 13:36:13,953 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2018-10-13 13:36:14,107 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-10-13 13:36:14,254 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-10-13 13:36:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:36:14,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:14,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:36:14,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:36:14,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:36:14,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:36:14,841 INFO L87 Difference]: Start difference. First operand 1330 states and 10580 transitions. Second operand 34 states. [2018-10-13 13:36:15,917 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-13 13:36:16,152 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-13 13:36:16,410 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2018-10-13 13:36:16,705 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2018-10-13 13:36:17,151 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-10-13 13:36:17,420 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-13 13:36:17,746 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-13 13:36:18,114 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-13 13:36:18,447 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2018-10-13 13:36:19,524 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2018-10-13 13:36:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:19,974 INFO L93 Difference]: Finished difference Result 1944 states and 14648 transitions. [2018-10-13 13:36:19,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:36:19,975 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 42 [2018-10-13 13:36:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:19,982 INFO L225 Difference]: With dead ends: 1944 [2018-10-13 13:36:19,982 INFO L226 Difference]: Without dead ends: 1944 [2018-10-13 13:36:19,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=767, Invalid=2313, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:36:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2018-10-13 13:36:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1378. [2018-10-13 13:36:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2018-10-13 13:36:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 11012 transitions. [2018-10-13 13:36:20,013 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 11012 transitions. Word has length 42 [2018-10-13 13:36:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:20,013 INFO L481 AbstractCegarLoop]: Abstraction has 1378 states and 11012 transitions. [2018-10-13 13:36:20,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:36:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 11012 transitions. [2018-10-13 13:36:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:20,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:20,016 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] [2018-10-13 13:36:20,016 INFO L424 AbstractCegarLoop]: === Iteration 65 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:20,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2081738843, now seen corresponding path program 1 times [2018-10-13 13:36:20,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:20,436 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2018-10-13 13:36:20,572 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2018-10-13 13:36:20,756 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2018-10-13 13:36:20,968 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 40 [2018-10-13 13:36:21,275 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 49 [2018-10-13 13:36:21,757 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 60 [2018-10-13 13:36:22,270 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 71 [2018-10-13 13:36:23,071 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 84 [2018-10-13 13:36:23,393 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 70 [2018-10-13 13:36:23,778 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 78 [2018-10-13 13:36:24,193 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 74 [2018-10-13 13:36:24,666 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 79 [2018-10-13 13:36:25,028 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 76 [2018-10-13 13:36:25,371 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 73 [2018-10-13 13:36:25,738 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 70 [2018-10-13 13:36:26,075 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2018-10-13 13:36:26,459 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 64 [2018-10-13 13:36:26,795 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 61 [2018-10-13 13:36:27,043 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-10-13 13:36:27,276 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2018-10-13 13:36:27,444 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-10-13 13:36:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:36:27,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:27,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:36:27,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:36:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:36:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:36:27,913 INFO L87 Difference]: Start difference. First operand 1378 states and 11012 transitions. Second operand 33 states. [2018-10-13 13:36:28,578 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-13 13:36:28,862 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2018-10-13 13:36:29,145 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2018-10-13 13:36:29,555 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 84 [2018-10-13 13:36:29,906 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 90 [2018-10-13 13:36:30,476 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 95 [2018-10-13 13:36:30,818 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2018-10-13 13:36:31,330 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 87 [2018-10-13 13:36:31,741 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 104 [2018-10-13 13:36:32,164 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 94 [2018-10-13 13:36:32,880 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 103 [2018-10-13 13:36:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:33,869 INFO L93 Difference]: Finished difference Result 1894 states and 13914 transitions. [2018-10-13 13:36:33,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:36:33,870 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 42 [2018-10-13 13:36:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:33,876 INFO L225 Difference]: With dead ends: 1894 [2018-10-13 13:36:33,876 INFO L226 Difference]: Without dead ends: 1894 [2018-10-13 13:36:33,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:36:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2018-10-13 13:36:33,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1414. [2018-10-13 13:36:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2018-10-13 13:36:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 11336 transitions. [2018-10-13 13:36:33,909 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 11336 transitions. Word has length 42 [2018-10-13 13:36:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:33,909 INFO L481 AbstractCegarLoop]: Abstraction has 1414 states and 11336 transitions. [2018-10-13 13:36:33,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:36:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 11336 transitions. [2018-10-13 13:36:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:33,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:33,912 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] [2018-10-13 13:36:33,912 INFO L424 AbstractCegarLoop]: === Iteration 66 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:33,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2142129172, now seen corresponding path program 1 times [2018-10-13 13:36:33,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:34,448 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-10-13 13:36:34,944 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-13 13:36:35,367 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-13 13:36:35,498 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-13 13:36:35,654 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-13 13:36:36,644 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 13:36:36,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:36,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:36:36,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:36:36,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:36:36,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:36:36,645 INFO L87 Difference]: Start difference. First operand 1414 states and 11336 transitions. Second operand 27 states. [2018-10-13 13:36:36,907 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-10-13 13:36:37,083 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-10-13 13:36:37,397 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2018-10-13 13:36:37,545 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-13 13:36:37,753 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2018-10-13 13:36:37,961 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-13 13:36:38,165 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-13 13:36:38,838 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-13 13:36:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:39,092 INFO L93 Difference]: Finished difference Result 1648 states and 12203 transitions. [2018-10-13 13:36:39,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:36:39,092 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 42 [2018-10-13 13:36:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:39,099 INFO L225 Difference]: With dead ends: 1648 [2018-10-13 13:36:39,099 INFO L226 Difference]: Without dead ends: 1648 [2018-10-13 13:36:39,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=343, Invalid=847, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:36:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2018-10-13 13:36:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1436. [2018-10-13 13:36:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-13 13:36:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 11534 transitions. [2018-10-13 13:36:39,159 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 11534 transitions. Word has length 42 [2018-10-13 13:36:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:39,159 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 11534 transitions. [2018-10-13 13:36:39,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:36:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 11534 transitions. [2018-10-13 13:36:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:39,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:39,162 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] [2018-10-13 13:36:39,162 INFO L424 AbstractCegarLoop]: === Iteration 67 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:39,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:39,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2100022653, now seen corresponding path program 1 times [2018-10-13 13:36:39,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:36:40,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:40,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:36:40,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:36:40,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:36:40,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:36:40,241 INFO L87 Difference]: Start difference. First operand 1436 states and 11534 transitions. Second operand 34 states. [2018-10-13 13:36:41,596 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-13 13:36:42,427 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-10-13 13:36:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:44,318 INFO L93 Difference]: Finished difference Result 2373 states and 17777 transitions. [2018-10-13 13:36:44,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 13:36:44,319 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 42 [2018-10-13 13:36:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:44,327 INFO L225 Difference]: With dead ends: 2373 [2018-10-13 13:36:44,327 INFO L226 Difference]: Without dead ends: 2373 [2018-10-13 13:36:44,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=953, Invalid=2469, Unknown=0, NotChecked=0, Total=3422 [2018-10-13 13:36:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2018-10-13 13:36:44,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1587. [2018-10-13 13:36:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2018-10-13 13:36:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 12930 transitions. [2018-10-13 13:36:44,370 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 12930 transitions. Word has length 42 [2018-10-13 13:36:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:44,370 INFO L481 AbstractCegarLoop]: Abstraction has 1587 states and 12930 transitions. [2018-10-13 13:36:44,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:36:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 12930 transitions. [2018-10-13 13:36:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:44,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:44,373 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] [2018-10-13 13:36:44,373 INFO L424 AbstractCegarLoop]: === Iteration 68 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:44,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2038321520, now seen corresponding path program 1 times [2018-10-13 13:36:44,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:45,708 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 13:36:45,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:45,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:36:45,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:36:45,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:36:45,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:36:45,709 INFO L87 Difference]: Start difference. First operand 1587 states and 12930 transitions. Second operand 30 states. [2018-10-13 13:36:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:47,398 INFO L93 Difference]: Finished difference Result 1758 states and 13841 transitions. [2018-10-13 13:36:47,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:36:47,398 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 42 [2018-10-13 13:36:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:47,405 INFO L225 Difference]: With dead ends: 1758 [2018-10-13 13:36:47,405 INFO L226 Difference]: Without dead ends: 1758 [2018-10-13 13:36:47,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=442, Invalid=1450, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:36:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2018-10-13 13:36:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1607. [2018-10-13 13:36:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1607 states. [2018-10-13 13:36:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 13110 transitions. [2018-10-13 13:36:47,438 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 13110 transitions. Word has length 42 [2018-10-13 13:36:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:47,438 INFO L481 AbstractCegarLoop]: Abstraction has 1607 states and 13110 transitions. [2018-10-13 13:36:47,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:36:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 13110 transitions. [2018-10-13 13:36:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:47,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:47,441 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] [2018-10-13 13:36:47,441 INFO L424 AbstractCegarLoop]: === Iteration 69 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:47,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1984195245, now seen corresponding path program 1 times [2018-10-13 13:36:47,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:48,131 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2018-10-13 13:36:48,290 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2018-10-13 13:36:48,445 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2018-10-13 13:36:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-13 13:36:49,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:49,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:36:49,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:36:49,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:36:49,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:36:49,223 INFO L87 Difference]: Start difference. First operand 1607 states and 13110 transitions. Second operand 31 states. [2018-10-13 13:36:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:51,385 INFO L93 Difference]: Finished difference Result 2625 states and 20938 transitions. [2018-10-13 13:36:51,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:36:51,386 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 42 [2018-10-13 13:36:51,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:51,395 INFO L225 Difference]: With dead ends: 2625 [2018-10-13 13:36:51,395 INFO L226 Difference]: Without dead ends: 2625 [2018-10-13 13:36:51,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=462, Invalid=1178, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 13:36:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2018-10-13 13:36:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2437. [2018-10-13 13:36:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2018-10-13 13:36:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 20580 transitions. [2018-10-13 13:36:51,448 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 20580 transitions. Word has length 42 [2018-10-13 13:36:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:51,448 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 20580 transitions. [2018-10-13 13:36:51,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:36:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 20580 transitions. [2018-10-13 13:36:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:51,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:51,451 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] [2018-10-13 13:36:51,452 INFO L424 AbstractCegarLoop]: === Iteration 70 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:51,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:51,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1923804916, now seen corresponding path program 1 times [2018-10-13 13:36:51,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:52,283 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-13 13:36:52,996 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 13:36:52,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:52,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:36:52,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:36:52,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:36:52,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:36:52,997 INFO L87 Difference]: Start difference. First operand 2437 states and 20580 transitions. Second operand 28 states. [2018-10-13 13:36:53,279 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-10-13 13:36:53,726 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-13 13:36:53,986 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2018-10-13 13:36:54,208 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-13 13:36:54,446 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-13 13:36:55,001 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-13 13:36:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:55,335 INFO L93 Difference]: Finished difference Result 2897 states and 23474 transitions. [2018-10-13 13:36:55,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:36:55,335 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 42 [2018-10-13 13:36:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:55,345 INFO L225 Difference]: With dead ends: 2897 [2018-10-13 13:36:55,346 INFO L226 Difference]: Without dead ends: 2897 [2018-10-13 13:36:55,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=382, Invalid=950, Unknown=0, NotChecked=0, Total=1332 [2018-10-13 13:36:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2018-10-13 13:36:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2465. [2018-10-13 13:36:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2018-10-13 13:36:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 20832 transitions. [2018-10-13 13:36:55,401 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 20832 transitions. Word has length 42 [2018-10-13 13:36:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:55,401 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 20832 transitions. [2018-10-13 13:36:55,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:36:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 20832 transitions. [2018-10-13 13:36:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:55,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:55,406 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] [2018-10-13 13:36:55,406 INFO L424 AbstractCegarLoop]: === Iteration 71 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:55,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1809288312, now seen corresponding path program 1 times [2018-10-13 13:36:55,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:57,023 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 13:36:57,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:57,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:36:57,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:36:57,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:36:57,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:36:57,024 INFO L87 Difference]: Start difference. First operand 2465 states and 20832 transitions. Second operand 28 states. [2018-10-13 13:36:57,641 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-13 13:36:57,904 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-13 13:36:58,165 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-13 13:36:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:36:58,631 INFO L93 Difference]: Finished difference Result 2643 states and 21493 transitions. [2018-10-13 13:36:58,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:36:58,631 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 42 [2018-10-13 13:36:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:36:58,640 INFO L225 Difference]: With dead ends: 2643 [2018-10-13 13:36:58,641 INFO L226 Difference]: Without dead ends: 2643 [2018-10-13 13:36:58,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 13:36:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2018-10-13 13:36:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2465. [2018-10-13 13:36:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2018-10-13 13:36:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 20832 transitions. [2018-10-13 13:36:58,694 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 20832 transitions. Word has length 42 [2018-10-13 13:36:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:36:58,694 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 20832 transitions. [2018-10-13 13:36:58,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:36:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 20832 transitions. [2018-10-13 13:36:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:36:58,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:36:58,698 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] [2018-10-13 13:36:58,698 INFO L424 AbstractCegarLoop]: === Iteration 72 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:36:58,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:36:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1694771708, now seen corresponding path program 1 times [2018-10-13 13:36:58,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:36:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:36:59,367 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 13:36:59,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:36:59,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:36:59,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:36:59,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:36:59,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:36:59,368 INFO L87 Difference]: Start difference. First operand 2465 states and 20832 transitions. Second operand 28 states. [2018-10-13 13:37:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:01,684 INFO L93 Difference]: Finished difference Result 5638 states and 47697 transitions. [2018-10-13 13:37:01,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:37:01,685 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 42 [2018-10-13 13:37:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:01,704 INFO L225 Difference]: With dead ends: 5638 [2018-10-13 13:37:01,704 INFO L226 Difference]: Without dead ends: 5638 [2018-10-13 13:37:01,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=491, Invalid=1149, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 13:37:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2018-10-13 13:37:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5430. [2018-10-13 13:37:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5430 states. [2018-10-13 13:37:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 47480 transitions. [2018-10-13 13:37:01,897 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 47480 transitions. Word has length 42 [2018-10-13 13:37:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:01,897 INFO L481 AbstractCegarLoop]: Abstraction has 5430 states and 47480 transitions. [2018-10-13 13:37:01,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:37:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 47480 transitions. [2018-10-13 13:37:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:01,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:01,902 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 13:37:01,902 INFO L424 AbstractCegarLoop]: === Iteration 73 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:01,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1536409177, now seen corresponding path program 1 times [2018-10-13 13:37:01,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:02,983 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 13:37:02,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:02,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-13 13:37:02,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-13 13:37:02,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-13 13:37:02,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2018-10-13 13:37:02,984 INFO L87 Difference]: Start difference. First operand 5430 states and 47480 transitions. Second operand 23 states. [2018-10-13 13:37:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:04,191 INFO L93 Difference]: Finished difference Result 5639 states and 48534 transitions. [2018-10-13 13:37:04,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:37:04,191 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2018-10-13 13:37:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:04,210 INFO L225 Difference]: With dead ends: 5639 [2018-10-13 13:37:04,210 INFO L226 Difference]: Without dead ends: 5639 [2018-10-13 13:37:04,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:37:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2018-10-13 13:37:04,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5448. [2018-10-13 13:37:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5448 states. [2018-10-13 13:37:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 47641 transitions. [2018-10-13 13:37:04,336 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 47641 transitions. Word has length 42 [2018-10-13 13:37:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:04,337 INFO L481 AbstractCegarLoop]: Abstraction has 5448 states and 47641 transitions. [2018-10-13 13:37:04,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-13 13:37:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 47641 transitions. [2018-10-13 13:37:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:04,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:04,342 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] [2018-10-13 13:37:04,342 INFO L424 AbstractCegarLoop]: === Iteration 74 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:04,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash -102496175, now seen corresponding path program 1 times [2018-10-13 13:37:04,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:04,894 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2018-10-13 13:37:05,101 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 43 [2018-10-13 13:37:05,320 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2018-10-13 13:37:05,645 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2018-10-13 13:37:05,997 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 71 [2018-10-13 13:37:06,361 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 83 [2018-10-13 13:37:06,897 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 94 [2018-10-13 13:37:07,581 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 102 [2018-10-13 13:37:08,491 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 110 [2018-10-13 13:37:08,665 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 55 [2018-10-13 13:37:08,946 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 64 [2018-10-13 13:37:09,219 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 59 [2018-10-13 13:37:09,440 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 53 [2018-10-13 13:37:09,662 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 48 [2018-10-13 13:37:09,871 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2018-10-13 13:37:10,035 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 39 [2018-10-13 13:37:10,192 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2018-10-13 13:37:10,344 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2018-10-13 13:37:10,495 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 29 [2018-10-13 13:37:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-13 13:37:10,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:10,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:37:10,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:37:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:37:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:37:10,985 INFO L87 Difference]: Start difference. First operand 5448 states and 47641 transitions. Second operand 33 states. [2018-10-13 13:37:11,633 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-13 13:37:11,826 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2018-10-13 13:37:12,119 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2018-10-13 13:37:12,395 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2018-10-13 13:37:12,667 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 73 [2018-10-13 13:37:13,102 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2018-10-13 13:37:13,368 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 74 [2018-10-13 13:37:13,673 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2018-10-13 13:37:13,935 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2018-10-13 13:37:14,323 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2018-10-13 13:37:15,281 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2018-10-13 13:37:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:16,008 INFO L93 Difference]: Finished difference Result 7505 states and 64640 transitions. [2018-10-13 13:37:16,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:37:16,008 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 42 [2018-10-13 13:37:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:16,033 INFO L225 Difference]: With dead ends: 7505 [2018-10-13 13:37:16,034 INFO L226 Difference]: Without dead ends: 7505 [2018-10-13 13:37:16,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=518, Invalid=1552, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:37:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states. [2018-10-13 13:37:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7505 to 5556. [2018-10-13 13:37:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5556 states. [2018-10-13 13:37:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 48613 transitions. [2018-10-13 13:37:16,205 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 48613 transitions. Word has length 42 [2018-10-13 13:37:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:16,205 INFO L481 AbstractCegarLoop]: Abstraction has 5556 states and 48613 transitions. [2018-10-13 13:37:16,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:37:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 48613 transitions. [2018-10-13 13:37:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:16,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:16,211 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] [2018-10-13 13:37:16,211 INFO L424 AbstractCegarLoop]: === Iteration 75 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:16,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:16,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1332093402, now seen corresponding path program 1 times [2018-10-13 13:37:16,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:16,911 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2018-10-13 13:37:17,615 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 13:37:17,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:17,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:37:17,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:37:17,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:37:17,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:37:17,616 INFO L87 Difference]: Start difference. First operand 5556 states and 48613 transitions. Second operand 27 states. [2018-10-13 13:37:18,137 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-10-13 13:37:18,320 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 13:37:18,589 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-13 13:37:18,741 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:37:18,897 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-13 13:37:19,135 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-13 13:37:19,493 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-13 13:37:20,129 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-13 13:37:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:20,467 INFO L93 Difference]: Finished difference Result 5868 states and 50181 transitions. [2018-10-13 13:37:20,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:37:20,467 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 42 [2018-10-13 13:37:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:20,487 INFO L225 Difference]: With dead ends: 5868 [2018-10-13 13:37:20,487 INFO L226 Difference]: Without dead ends: 5868 [2018-10-13 13:37:20,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=367, Invalid=965, Unknown=0, NotChecked=0, Total=1332 [2018-10-13 13:37:20,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2018-10-13 13:37:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5566. [2018-10-13 13:37:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5566 states. [2018-10-13 13:37:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 48703 transitions. [2018-10-13 13:37:20,614 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 48703 transitions. Word has length 42 [2018-10-13 13:37:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:20,614 INFO L481 AbstractCegarLoop]: Abstraction has 5566 states and 48703 transitions. [2018-10-13 13:37:20,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:37:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 48703 transitions. [2018-10-13 13:37:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:20,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:20,620 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] [2018-10-13 13:37:20,620 INFO L424 AbstractCegarLoop]: === Iteration 76 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:20,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:20,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1606494077, now seen corresponding path program 2 times [2018-10-13 13:37:20,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:21,517 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-10-13 13:37:21,646 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-10-13 13:37:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:37:22,789 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:22,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:37:22,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:37:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:37:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:37:22,790 INFO L87 Difference]: Start difference. First operand 5566 states and 48703 transitions. Second operand 34 states. [2018-10-13 13:37:23,959 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-13 13:37:24,572 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-13 13:37:24,723 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2018-10-13 13:37:25,341 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-13 13:37:26,088 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2018-10-13 13:37:26,244 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2018-10-13 13:37:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:27,013 INFO L93 Difference]: Finished difference Result 7982 states and 68045 transitions. [2018-10-13 13:37:27,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:37:27,013 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 42 [2018-10-13 13:37:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:27,041 INFO L225 Difference]: With dead ends: 7982 [2018-10-13 13:37:27,041 INFO L226 Difference]: Without dead ends: 7982 [2018-10-13 13:37:27,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=782, Invalid=2298, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:37:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7982 states. [2018-10-13 13:37:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7982 to 7276. [2018-10-13 13:37:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7276 states. [2018-10-13 13:37:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 64093 transitions. [2018-10-13 13:37:27,370 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 64093 transitions. Word has length 42 [2018-10-13 13:37:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:27,370 INFO L481 AbstractCegarLoop]: Abstraction has 7276 states and 64093 transitions. [2018-10-13 13:37:27,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:37:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 64093 transitions. [2018-10-13 13:37:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:27,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:27,376 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 13:37:27,376 INFO L424 AbstractCegarLoop]: === Iteration 77 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:27,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1913931599, now seen corresponding path program 1 times [2018-10-13 13:37:27,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:27,651 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:37:28,985 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 13:37:28,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:37:28,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-13 13:37:28,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:37:28,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:37:28,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:37:28,986 INFO L87 Difference]: Start difference. First operand 7276 states and 64093 transitions. Second operand 29 states. [2018-10-13 13:37:29,930 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-10-13 13:37:30,291 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-13 13:37:30,420 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2018-10-13 13:37:30,819 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-13 13:37:31,142 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-13 13:37:31,573 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-13 13:37:31,848 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-13 13:37:32,003 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-10-13 13:37:32,182 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-10-13 13:37:32,674 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-13 13:37:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:32,723 INFO L93 Difference]: Finished difference Result 7867 states and 67837 transitions. [2018-10-13 13:37:32,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:37:32,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 42 [2018-10-13 13:37:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:32,751 INFO L225 Difference]: With dead ends: 7867 [2018-10-13 13:37:32,751 INFO L226 Difference]: Without dead ends: 7867 [2018-10-13 13:37:32,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=643, Invalid=1709, Unknown=0, NotChecked=0, Total=2352 [2018-10-13 13:37:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7867 states. [2018-10-13 13:37:32,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7867 to 7284. [2018-10-13 13:37:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7284 states. [2018-10-13 13:37:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 64165 transitions. [2018-10-13 13:37:32,919 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 64165 transitions. Word has length 42 [2018-10-13 13:37:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:32,919 INFO L481 AbstractCegarLoop]: Abstraction has 7284 states and 64165 transitions. [2018-10-13 13:37:32,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:37:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 64165 transitions. [2018-10-13 13:37:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:32,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:32,925 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] [2018-10-13 13:37:32,926 INFO L424 AbstractCegarLoop]: === Iteration 78 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:32,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:32,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1793908525, now seen corresponding path program 2 times [2018-10-13 13:37:32,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:34,149 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 13:37:34,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:34,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:37:34,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:37:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:37:34,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:37:34,150 INFO L87 Difference]: Start difference. First operand 7284 states and 64165 transitions. Second operand 33 states. [2018-10-13 13:37:35,124 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:37:35,419 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 13:37:35,561 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-13 13:37:36,295 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-13 13:37:36,523 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-13 13:37:36,846 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-13 13:37:37,008 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2018-10-13 13:37:38,164 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2018-10-13 13:37:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:38,251 INFO L93 Difference]: Finished difference Result 8130 states and 70238 transitions. [2018-10-13 13:37:38,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 13:37:38,251 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 42 [2018-10-13 13:37:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:38,280 INFO L225 Difference]: With dead ends: 8130 [2018-10-13 13:37:38,280 INFO L226 Difference]: Without dead ends: 8130 [2018-10-13 13:37:38,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:37:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8130 states. [2018-10-13 13:37:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8130 to 7340. [2018-10-13 13:37:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7340 states. [2018-10-13 13:37:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7340 states to 7340 states and 64579 transitions. [2018-10-13 13:37:38,450 INFO L78 Accepts]: Start accepts. Automaton has 7340 states and 64579 transitions. Word has length 42 [2018-10-13 13:37:38,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:38,450 INFO L481 AbstractCegarLoop]: Abstraction has 7340 states and 64579 transitions. [2018-10-13 13:37:38,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:37:38,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7340 states and 64579 transitions. [2018-10-13 13:37:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:38,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:38,456 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] [2018-10-13 13:37:38,456 INFO L424 AbstractCegarLoop]: === Iteration 79 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:38,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:38,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1965504685, now seen corresponding path program 3 times [2018-10-13 13:37:38,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:39,082 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2018-10-13 13:37:39,250 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2018-10-13 13:37:39,422 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2018-10-13 13:37:39,610 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2018-10-13 13:37:40,018 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-10-13 13:37:40,252 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-13 13:37:40,437 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-13 13:37:40,651 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-13 13:37:40,848 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-13 13:37:41,037 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-10-13 13:37:41,219 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-10-13 13:37:41,384 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2018-10-13 13:37:41,523 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2018-10-13 13:37:42,223 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 13:37:42,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:42,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:37:42,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:37:42,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:37:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:37:42,224 INFO L87 Difference]: Start difference. First operand 7340 states and 64579 transitions. Second operand 33 states. [2018-10-13 13:37:42,915 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2018-10-13 13:37:43,112 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2018-10-13 13:37:43,317 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2018-10-13 13:37:43,641 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2018-10-13 13:37:43,843 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-13 13:37:44,021 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2018-10-13 13:37:44,233 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2018-10-13 13:37:44,458 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-10-13 13:37:44,681 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2018-10-13 13:37:45,048 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2018-10-13 13:37:45,256 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-13 13:37:45,466 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-13 13:37:45,685 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2018-10-13 13:37:45,882 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2018-10-13 13:37:46,227 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2018-10-13 13:37:46,482 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-13 13:37:46,739 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2018-10-13 13:37:46,964 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-13 13:37:47,184 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2018-10-13 13:37:48,100 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2018-10-13 13:37:49,326 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-13 13:37:49,629 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-13 13:37:49,835 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2018-10-13 13:37:50,042 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-13 13:37:50,417 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2018-10-13 13:37:50,645 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-13 13:37:50,860 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2018-10-13 13:37:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:50,876 INFO L93 Difference]: Finished difference Result 10434 states and 89050 transitions. [2018-10-13 13:37:50,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-13 13:37:50,876 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 42 [2018-10-13 13:37:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:50,911 INFO L225 Difference]: With dead ends: 10434 [2018-10-13 13:37:50,911 INFO L226 Difference]: Without dead ends: 10434 [2018-10-13 13:37:50,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1199, Invalid=2833, Unknown=0, NotChecked=0, Total=4032 [2018-10-13 13:37:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2018-10-13 13:37:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 7580. [2018-10-13 13:37:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7580 states. [2018-10-13 13:37:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 66739 transitions. [2018-10-13 13:37:51,102 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 66739 transitions. Word has length 42 [2018-10-13 13:37:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:37:51,102 INFO L481 AbstractCegarLoop]: Abstraction has 7580 states and 66739 transitions. [2018-10-13 13:37:51,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:37:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 66739 transitions. [2018-10-13 13:37:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:37:51,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:37:51,108 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] [2018-10-13 13:37:51,109 INFO L424 AbstractCegarLoop]: === Iteration 80 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:37:51,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:37:51,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1905293102, now seen corresponding path program 1 times [2018-10-13 13:37:51,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:37:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:37:51,692 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-13 13:37:51,903 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2018-10-13 13:37:52,200 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2018-10-13 13:37:52,586 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2018-10-13 13:37:52,867 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 51 [2018-10-13 13:37:53,025 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 48 [2018-10-13 13:37:53,193 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 52 [2018-10-13 13:37:53,352 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 49 [2018-10-13 13:37:53,506 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 46 [2018-10-13 13:37:53,690 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 43 [2018-10-13 13:37:54,490 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 13:37:54,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:37:54,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:37:54,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:37:54,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:37:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:37:54,490 INFO L87 Difference]: Start difference. First operand 7580 states and 66739 transitions. Second operand 29 states. [2018-10-13 13:37:55,374 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2018-10-13 13:37:55,567 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 46 [2018-10-13 13:37:55,809 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 57 [2018-10-13 13:37:56,089 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-13 13:37:56,438 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 65 [2018-10-13 13:37:56,958 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 68 [2018-10-13 13:37:57,281 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 67 [2018-10-13 13:37:57,590 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-13 13:37:57,931 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 64 [2018-10-13 13:37:58,419 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 67 [2018-10-13 13:37:59,494 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2018-10-13 13:37:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:37:59,817 INFO L93 Difference]: Finished difference Result 8384 states and 72451 transitions. [2018-10-13 13:37:59,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:37:59,817 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 42 [2018-10-13 13:37:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:37:59,846 INFO L225 Difference]: With dead ends: 8384 [2018-10-13 13:37:59,847 INFO L226 Difference]: Without dead ends: 8384 [2018-10-13 13:37:59,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=494, Invalid=1486, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:37:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2018-10-13 13:37:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 7634. [2018-10-13 13:37:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7634 states. [2018-10-13 13:38:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 67225 transitions. [2018-10-13 13:38:00,031 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 67225 transitions. Word has length 42 [2018-10-13 13:38:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:00,031 INFO L481 AbstractCegarLoop]: Abstraction has 7634 states and 67225 transitions. [2018-10-13 13:38:00,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:38:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 67225 transitions. [2018-10-13 13:38:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:00,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:00,037 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] [2018-10-13 13:38:00,038 INFO L424 AbstractCegarLoop]: === Iteration 81 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:00,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:00,038 INFO L82 PathProgramCache]: Analyzing trace with hash 770980942, now seen corresponding path program 1 times [2018-10-13 13:38:00,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:00,783 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2018-10-13 13:38:00,924 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-13 13:38:01,456 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-13 13:38:02,271 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 13:38:02,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:38:02,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:38:02,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:38:02,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:38:02,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:38:02,272 INFO L87 Difference]: Start difference. First operand 7634 states and 67225 transitions. Second operand 28 states. [2018-10-13 13:38:03,054 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-13 13:38:03,265 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2018-10-13 13:38:03,640 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-13 13:38:03,938 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-13 13:38:04,302 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-13 13:38:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:05,054 INFO L93 Difference]: Finished difference Result 8138 states and 70378 transitions. [2018-10-13 13:38:05,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:38:05,054 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 42 [2018-10-13 13:38:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:05,082 INFO L225 Difference]: With dead ends: 8138 [2018-10-13 13:38:05,083 INFO L226 Difference]: Without dead ends: 8138 [2018-10-13 13:38:05,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=412, Invalid=1394, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:38:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8138 states. [2018-10-13 13:38:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8138 to 7676. [2018-10-13 13:38:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7676 states. [2018-10-13 13:38:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 67603 transitions. [2018-10-13 13:38:05,472 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 67603 transitions. Word has length 42 [2018-10-13 13:38:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:05,473 INFO L481 AbstractCegarLoop]: Abstraction has 7676 states and 67603 transitions. [2018-10-13 13:38:05,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:38:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 67603 transitions. [2018-10-13 13:38:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:05,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:05,479 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 13:38:05,479 INFO L424 AbstractCegarLoop]: === Iteration 82 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:05,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:05,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1323454905, now seen corresponding path program 1 times [2018-10-13 13:38:05,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:06,687 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 13:38:06,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:38:06,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-13 13:38:06,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:38:06,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:38:06,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:38:06,688 INFO L87 Difference]: Start difference. First operand 7676 states and 67603 transitions. Second operand 26 states. [2018-10-13 13:38:07,812 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-13 13:38:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:08,773 INFO L93 Difference]: Finished difference Result 8399 states and 72169 transitions. [2018-10-13 13:38:08,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:38:08,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2018-10-13 13:38:08,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:08,803 INFO L225 Difference]: With dead ends: 8399 [2018-10-13 13:38:08,803 INFO L226 Difference]: Without dead ends: 8399 [2018-10-13 13:38:08,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2018-10-13 13:38:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2018-10-13 13:38:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 7684. [2018-10-13 13:38:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7684 states. [2018-10-13 13:38:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 67675 transitions. [2018-10-13 13:38:08,979 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 67675 transitions. Word has length 42 [2018-10-13 13:38:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:08,979 INFO L481 AbstractCegarLoop]: Abstraction has 7684 states and 67675 transitions. [2018-10-13 13:38:08,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:38:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 67675 transitions. [2018-10-13 13:38:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:08,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:08,986 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] [2018-10-13 13:38:08,986 INFO L424 AbstractCegarLoop]: === Iteration 83 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:08,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:08,986 INFO L82 PathProgramCache]: Analyzing trace with hash -675937404, now seen corresponding path program 2 times [2018-10-13 13:38:08,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:09,845 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-13 13:38:10,232 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2018-10-13 13:38:10,365 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2018-10-13 13:38:11,056 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 13:38:11,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:38:11,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:38:11,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:38:11,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:38:11,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:38:11,057 INFO L87 Difference]: Start difference. First operand 7684 states and 67675 transitions. Second operand 28 states. [2018-10-13 13:38:11,725 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-13 13:38:11,918 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 49 [2018-10-13 13:38:12,293 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 53 [2018-10-13 13:38:12,466 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 50 [2018-10-13 13:38:12,673 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2018-10-13 13:38:12,836 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-13 13:38:13,052 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2018-10-13 13:38:13,283 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 58 [2018-10-13 13:38:13,520 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2018-10-13 13:38:13,729 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 55 [2018-10-13 13:38:13,904 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2018-10-13 13:38:14,114 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 55 [2018-10-13 13:38:14,324 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 53 [2018-10-13 13:38:14,589 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 52 [2018-10-13 13:38:14,984 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2018-10-13 13:38:15,219 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 57 [2018-10-13 13:38:15,449 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 54 [2018-10-13 13:38:16,566 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 51 [2018-10-13 13:38:16,777 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-13 13:38:17,003 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2018-10-13 13:38:17,198 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2018-10-13 13:38:17,495 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 54 [2018-10-13 13:38:18,475 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 49 [2018-10-13 13:38:18,659 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 57 [2018-10-13 13:38:18,840 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 54 [2018-10-13 13:38:19,056 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-13 13:38:19,288 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62 [2018-10-13 13:38:19,504 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 59 [2018-10-13 13:38:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:19,523 INFO L93 Difference]: Finished difference Result 9337 states and 79144 transitions. [2018-10-13 13:38:19,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-13 13:38:19,524 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 42 [2018-10-13 13:38:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:19,556 INFO L225 Difference]: With dead ends: 9337 [2018-10-13 13:38:19,556 INFO L226 Difference]: Without dead ends: 9337 [2018-10-13 13:38:19,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1152, Invalid=2508, Unknown=0, NotChecked=0, Total=3660 [2018-10-13 13:38:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2018-10-13 13:38:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 8268. [2018-10-13 13:38:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8268 states. [2018-10-13 13:38:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 72931 transitions. [2018-10-13 13:38:19,755 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 72931 transitions. Word has length 42 [2018-10-13 13:38:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:19,755 INFO L481 AbstractCegarLoop]: Abstraction has 8268 states and 72931 transitions. [2018-10-13 13:38:19,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:38:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 72931 transitions. [2018-10-13 13:38:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:19,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:19,763 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] [2018-10-13 13:38:19,763 INFO L424 AbstractCegarLoop]: === Iteration 84 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:19,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash -847712310, now seen corresponding path program 1 times [2018-10-13 13:38:19,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:20,250 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2018-10-13 13:38:21,006 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 13:38:21,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:38:21,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:38:21,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:38:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:38:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:38:21,007 INFO L87 Difference]: Start difference. First operand 8268 states and 72931 transitions. Second operand 26 states. [2018-10-13 13:38:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:22,514 INFO L93 Difference]: Finished difference Result 9000 states and 78410 transitions. [2018-10-13 13:38:22,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:38:22,514 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2018-10-13 13:38:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:22,546 INFO L225 Difference]: With dead ends: 9000 [2018-10-13 13:38:22,546 INFO L226 Difference]: Without dead ends: 9000 [2018-10-13 13:38:22,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:38:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9000 states. [2018-10-13 13:38:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9000 to 8812. [2018-10-13 13:38:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8812 states. [2018-10-13 13:38:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 77827 transitions. [2018-10-13 13:38:22,915 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 77827 transitions. Word has length 42 [2018-10-13 13:38:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:22,915 INFO L481 AbstractCegarLoop]: Abstraction has 8812 states and 77827 transitions. [2018-10-13 13:38:22,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:38:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 77827 transitions. [2018-10-13 13:38:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:22,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:22,922 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 13:38:22,922 INFO L424 AbstractCegarLoop]: === Iteration 85 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:22,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:22,923 INFO L82 PathProgramCache]: Analyzing trace with hash -265874113, now seen corresponding path program 1 times [2018-10-13 13:38:22,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:23,487 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 13:38:23,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:38:23,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-13 13:38:23,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:38:23,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:38:23,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:38:23,488 INFO L87 Difference]: Start difference. First operand 8812 states and 77827 transitions. Second operand 24 states. [2018-10-13 13:38:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:25,002 INFO L93 Difference]: Finished difference Result 9033 states and 78722 transitions. [2018-10-13 13:38:25,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:38:25,002 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2018-10-13 13:38:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:25,035 INFO L225 Difference]: With dead ends: 9033 [2018-10-13 13:38:25,035 INFO L226 Difference]: Without dead ends: 9033 [2018-10-13 13:38:25,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2018-10-13 13:38:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2018-10-13 13:38:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8824. [2018-10-13 13:38:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8824 states. [2018-10-13 13:38:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8824 states to 8824 states and 77935 transitions. [2018-10-13 13:38:25,236 INFO L78 Accepts]: Start accepts. Automaton has 8824 states and 77935 transitions. Word has length 42 [2018-10-13 13:38:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:25,237 INFO L481 AbstractCegarLoop]: Abstraction has 8824 states and 77935 transitions. [2018-10-13 13:38:25,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:38:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8824 states and 77935 transitions. [2018-10-13 13:38:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:25,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:25,245 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] [2018-10-13 13:38:25,245 INFO L424 AbstractCegarLoop]: === Iteration 86 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:25,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:25,245 INFO L82 PathProgramCache]: Analyzing trace with hash 444023379, now seen corresponding path program 4 times [2018-10-13 13:38:25,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:26,355 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 13:38:26,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:38:26,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:38:26,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:38:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:38:26,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:38:26,356 INFO L87 Difference]: Start difference. First operand 8824 states and 77935 transitions. Second operand 32 states. [2018-10-13 13:38:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:28,656 INFO L93 Difference]: Finished difference Result 9749 states and 84337 transitions. [2018-10-13 13:38:28,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:38:28,656 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 42 [2018-10-13 13:38:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:28,690 INFO L225 Difference]: With dead ends: 9749 [2018-10-13 13:38:28,691 INFO L226 Difference]: Without dead ends: 9749 [2018-10-13 13:38:28,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=510, Invalid=1296, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:38:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9749 states. [2018-10-13 13:38:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9749 to 9134. [2018-10-13 13:38:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9134 states. [2018-10-13 13:38:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 80725 transitions. [2018-10-13 13:38:28,888 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 80725 transitions. Word has length 42 [2018-10-13 13:38:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:28,888 INFO L481 AbstractCegarLoop]: Abstraction has 9134 states and 80725 transitions. [2018-10-13 13:38:28,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:38:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 80725 transitions. [2018-10-13 13:38:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:28,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:28,895 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 13:38:28,895 INFO L424 AbstractCegarLoop]: === Iteration 87 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:28,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:28,895 INFO L82 PathProgramCache]: Analyzing trace with hash -330518241, now seen corresponding path program 1 times [2018-10-13 13:38:28,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:29,568 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2018-10-13 13:38:29,806 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2018-10-13 13:38:30,325 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2018-10-13 13:38:30,921 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2018-10-13 13:38:31,380 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-13 13:38:31,680 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2018-10-13 13:38:31,978 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2018-10-13 13:38:32,368 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2018-10-13 13:38:32,730 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-13 13:38:32,899 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2018-10-13 13:38:33,075 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 13:38:33,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:38:33,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:38:33,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:38:33,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:38:33,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:38:33,077 INFO L87 Difference]: Start difference. First operand 9134 states and 80725 transitions. Second operand 30 states. [2018-10-13 13:38:33,948 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-10-13 13:38:34,460 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2018-10-13 13:38:34,745 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2018-10-13 13:38:35,068 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2018-10-13 13:38:35,652 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 98 [2018-10-13 13:38:36,545 WARN L178 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 93 [2018-10-13 13:38:37,112 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 85 [2018-10-13 13:38:37,436 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2018-10-13 13:38:38,202 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 92 [2018-10-13 13:38:38,749 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 84 [2018-10-13 13:38:39,051 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2018-10-13 13:38:39,962 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 97 [2018-10-13 13:38:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:41,188 INFO L93 Difference]: Finished difference Result 9452 states and 81888 transitions. [2018-10-13 13:38:41,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-13 13:38:41,188 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 42 [2018-10-13 13:38:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:41,222 INFO L225 Difference]: With dead ends: 9452 [2018-10-13 13:38:41,222 INFO L226 Difference]: Without dead ends: 9452 [2018-10-13 13:38:41,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=700, Invalid=1952, Unknown=0, NotChecked=0, Total=2652 [2018-10-13 13:38:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2018-10-13 13:38:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9159. [2018-10-13 13:38:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9159 states. [2018-10-13 13:38:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9159 states to 9159 states and 80942 transitions. [2018-10-13 13:38:41,577 INFO L78 Accepts]: Start accepts. Automaton has 9159 states and 80942 transitions. Word has length 42 [2018-10-13 13:38:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:41,577 INFO L481 AbstractCegarLoop]: Abstraction has 9159 states and 80942 transitions. [2018-10-13 13:38:41,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:38:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9159 states and 80942 transitions. [2018-10-13 13:38:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-13 13:38:41,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:41,583 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 13:38:41,583 INFO L424 AbstractCegarLoop]: === Iteration 88 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:41,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:41,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1256294744, now seen corresponding path program 1 times [2018-10-13 13:38:41,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:42,151 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 13:38:42,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:38:42,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-13 13:38:42,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-13 13:38:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-13 13:38:42,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-10-13 13:38:42,152 INFO L87 Difference]: Start difference. First operand 9159 states and 80942 transitions. Second operand 18 states. [2018-10-13 13:38:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:43,553 INFO L93 Difference]: Finished difference Result 9536 states and 82710 transitions. [2018-10-13 13:38:43,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-13 13:38:43,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2018-10-13 13:38:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:43,587 INFO L225 Difference]: With dead ends: 9536 [2018-10-13 13:38:43,588 INFO L226 Difference]: Without dead ends: 9536 [2018-10-13 13:38:43,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:38:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2018-10-13 13:38:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 9171. [2018-10-13 13:38:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9171 states. [2018-10-13 13:38:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9171 states to 9171 states and 80986 transitions. [2018-10-13 13:38:43,797 INFO L78 Accepts]: Start accepts. Automaton has 9171 states and 80986 transitions. Word has length 42 [2018-10-13 13:38:43,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:43,797 INFO L481 AbstractCegarLoop]: Abstraction has 9171 states and 80986 transitions. [2018-10-13 13:38:43,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-13 13:38:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9171 states and 80986 transitions. [2018-10-13 13:38:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:38:43,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:43,804 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:38:43,804 INFO L424 AbstractCegarLoop]: === Iteration 89 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:43,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:43,804 INFO L82 PathProgramCache]: Analyzing trace with hash -402553908, now seen corresponding path program 1 times [2018-10-13 13:38:43,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:38:45,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:38:45,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:38:45,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:38:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:38:45,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:38:45,035 INFO L87 Difference]: Start difference. First operand 9171 states and 80986 transitions. Second operand 34 states. [2018-10-13 13:38:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:38:46,643 INFO L93 Difference]: Finished difference Result 9671 states and 84947 transitions. [2018-10-13 13:38:46,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:38:46,644 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 43 [2018-10-13 13:38:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:38:46,679 INFO L225 Difference]: With dead ends: 9671 [2018-10-13 13:38:46,679 INFO L226 Difference]: Without dead ends: 9671 [2018-10-13 13:38:46,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=547, Invalid=1903, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:38:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9671 states. [2018-10-13 13:38:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9671 to 9203. [2018-10-13 13:38:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9203 states. [2018-10-13 13:38:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 81274 transitions. [2018-10-13 13:38:47,075 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 81274 transitions. Word has length 43 [2018-10-13 13:38:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:38:47,076 INFO L481 AbstractCegarLoop]: Abstraction has 9203 states and 81274 transitions. [2018-10-13 13:38:47,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:38:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 81274 transitions. [2018-10-13 13:38:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:38:47,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:38:47,082 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:38:47,082 INFO L424 AbstractCegarLoop]: === Iteration 90 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:38:47,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:38:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash -456114282, now seen corresponding path program 1 times [2018-10-13 13:38:47,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:38:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:38:47,449 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2018-10-13 13:38:47,646 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2018-10-13 13:38:47,808 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2018-10-13 13:38:47,987 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2018-10-13 13:38:48,252 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2018-10-13 13:38:48,577 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2018-10-13 13:38:49,088 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 77 [2018-10-13 13:38:49,826 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 89 [2018-10-13 13:38:50,764 WARN L178 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 110 [2018-10-13 13:38:52,095 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 267 DAG size of output: 125 [2018-10-13 13:38:53,487 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 283 DAG size of output: 133 [2018-10-13 13:38:54,646 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 281 DAG size of output: 65 [2018-10-13 13:38:55,608 WARN L178 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 69 [2018-10-13 13:38:56,614 WARN L178 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 64 [2018-10-13 13:38:57,133 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 61 [2018-10-13 13:38:57,979 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 55 [2018-10-13 13:38:58,367 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 52 [2018-10-13 13:38:58,731 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 49 [2018-10-13 13:38:59,318 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 46 [2018-10-13 13:38:59,819 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 43 [2018-10-13 13:39:00,229 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 38 [2018-10-13 13:39:00,576 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2018-10-13 13:39:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:39:00,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:00,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:39:00,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:39:00,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:39:00,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:39:00,882 INFO L87 Difference]: Start difference. First operand 9203 states and 81274 transitions. Second operand 34 states. [2018-10-13 13:39:01,771 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2018-10-13 13:39:02,004 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2018-10-13 13:39:02,331 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2018-10-13 13:39:02,821 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 75 [2018-10-13 13:39:03,123 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 78 [2018-10-13 13:39:03,728 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 82 [2018-10-13 13:39:04,181 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 78 [2018-10-13 13:39:04,660 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 89 [2018-10-13 13:39:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:05,797 INFO L93 Difference]: Finished difference Result 9365 states and 81446 transitions. [2018-10-13 13:39:05,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:39:05,798 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 43 [2018-10-13 13:39:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:05,831 INFO L225 Difference]: With dead ends: 9365 [2018-10-13 13:39:05,831 INFO L226 Difference]: Without dead ends: 9365 [2018-10-13 13:39:05,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=456, Invalid=1706, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:39:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9365 states. [2018-10-13 13:39:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9365 to 1630. [2018-10-13 13:39:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2018-10-13 13:39:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 13154 transitions. [2018-10-13 13:39:05,948 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 13154 transitions. Word has length 43 [2018-10-13 13:39:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:05,948 INFO L481 AbstractCegarLoop]: Abstraction has 1630 states and 13154 transitions. [2018-10-13 13:39:05,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:39:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 13154 transitions. [2018-10-13 13:39:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:05,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:05,951 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] [2018-10-13 13:39:05,951 INFO L424 AbstractCegarLoop]: === Iteration 91 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:05,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash -454120079, now seen corresponding path program 1 times [2018-10-13 13:39:05,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:06,934 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-13 13:39:07,086 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-13 13:39:07,253 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-13 13:39:07,415 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-13 13:39:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:39:08,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:08,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:39:08,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:39:08,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:39:08,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:39:08,384 INFO L87 Difference]: Start difference. First operand 1630 states and 13154 transitions. Second operand 32 states. [2018-10-13 13:39:09,499 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2018-10-13 13:39:09,771 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2018-10-13 13:39:09,943 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2018-10-13 13:39:10,129 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-13 13:39:10,545 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-13 13:39:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:11,516 INFO L93 Difference]: Finished difference Result 2419 states and 18612 transitions. [2018-10-13 13:39:11,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:39:11,516 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 43 [2018-10-13 13:39:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:11,524 INFO L225 Difference]: With dead ends: 2419 [2018-10-13 13:39:11,524 INFO L226 Difference]: Without dead ends: 2419 [2018-10-13 13:39:11,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=607, Invalid=1943, Unknown=0, NotChecked=0, Total=2550 [2018-10-13 13:39:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2018-10-13 13:39:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1758. [2018-10-13 13:39:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1758 states. [2018-10-13 13:39:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 14306 transitions. [2018-10-13 13:39:11,564 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 14306 transitions. Word has length 43 [2018-10-13 13:39:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:11,565 INFO L481 AbstractCegarLoop]: Abstraction has 1758 states and 14306 transitions. [2018-10-13 13:39:11,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:39:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 14306 transitions. [2018-10-13 13:39:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:11,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:11,567 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 13:39:11,567 INFO L424 AbstractCegarLoop]: === Iteration 92 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:11,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1707953975, now seen corresponding path program 1 times [2018-10-13 13:39:11,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:11,975 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 13:39:11,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:39:11,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-13 13:39:11,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-13 13:39:11,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-13 13:39:11,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-10-13 13:39:11,976 INFO L87 Difference]: Start difference. First operand 1758 states and 14306 transitions. Second operand 22 states. [2018-10-13 13:39:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:12,951 INFO L93 Difference]: Finished difference Result 1980 states and 15216 transitions. [2018-10-13 13:39:12,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-13 13:39:12,952 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2018-10-13 13:39:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:12,959 INFO L225 Difference]: With dead ends: 1980 [2018-10-13 13:39:12,959 INFO L226 Difference]: Without dead ends: 1980 [2018-10-13 13:39:12,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:39:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-13 13:39:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1779. [2018-10-13 13:39:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2018-10-13 13:39:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 14438 transitions. [2018-10-13 13:39:12,997 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 14438 transitions. Word has length 43 [2018-10-13 13:39:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:12,997 INFO L481 AbstractCegarLoop]: Abstraction has 1779 states and 14438 transitions. [2018-10-13 13:39:12,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-13 13:39:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 14438 transitions. [2018-10-13 13:39:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:13,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:13,000 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] [2018-10-13 13:39:13,000 INFO L424 AbstractCegarLoop]: === Iteration 93 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:13,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:13,001 INFO L82 PathProgramCache]: Analyzing trace with hash -683080685, now seen corresponding path program 1 times [2018-10-13 13:39:13,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:39:14,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:14,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:39:14,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:39:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:39:14,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:39:14,420 INFO L87 Difference]: Start difference. First operand 1779 states and 14438 transitions. Second operand 32 states. [2018-10-13 13:39:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:16,405 INFO L93 Difference]: Finished difference Result 2098 states and 16243 transitions. [2018-10-13 13:39:16,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:39:16,406 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 43 [2018-10-13 13:39:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:16,413 INFO L225 Difference]: With dead ends: 2098 [2018-10-13 13:39:16,413 INFO L226 Difference]: Without dead ends: 2098 [2018-10-13 13:39:16,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=470, Invalid=1692, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:39:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2018-10-13 13:39:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1665. [2018-10-13 13:39:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2018-10-13 13:39:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 13412 transitions. [2018-10-13 13:39:16,451 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 13412 transitions. Word has length 43 [2018-10-13 13:39:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:16,451 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 13412 transitions. [2018-10-13 13:39:16,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:39:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 13412 transitions. [2018-10-13 13:39:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:16,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:16,454 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] [2018-10-13 13:39:16,454 INFO L424 AbstractCegarLoop]: === Iteration 94 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:16,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:16,454 INFO L82 PathProgramCache]: Analyzing trace with hash -675692517, now seen corresponding path program 1 times [2018-10-13 13:39:16,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:17,120 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2018-10-13 13:39:17,258 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-13 13:39:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:39:17,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:17,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:39:17,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:39:17,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:39:17,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:39:17,800 INFO L87 Difference]: Start difference. First operand 1665 states and 13412 transitions. Second operand 30 states. [2018-10-13 13:39:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:18,975 INFO L93 Difference]: Finished difference Result 2071 states and 16573 transitions. [2018-10-13 13:39:18,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:39:18,975 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 43 [2018-10-13 13:39:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:18,983 INFO L225 Difference]: With dead ends: 2071 [2018-10-13 13:39:18,983 INFO L226 Difference]: Without dead ends: 2071 [2018-10-13 13:39:18,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:39:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2018-10-13 13:39:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2009. [2018-10-13 13:39:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2018-10-13 13:39:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 16508 transitions. [2018-10-13 13:39:19,022 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 16508 transitions. Word has length 43 [2018-10-13 13:39:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:19,023 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 16508 transitions. [2018-10-13 13:39:19,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:39:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 16508 transitions. [2018-10-13 13:39:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:19,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:19,025 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] [2018-10-13 13:39:19,026 INFO L424 AbstractCegarLoop]: === Iteration 95 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:19,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:19,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1237042610, now seen corresponding path program 1 times [2018-10-13 13:39:19,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:19,904 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 13:39:19,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:19,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-13 13:39:19,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:39:19,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:39:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:39:19,905 INFO L87 Difference]: Start difference. First operand 2009 states and 16508 transitions. Second operand 25 states. [2018-10-13 13:39:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:20,781 INFO L93 Difference]: Finished difference Result 2181 states and 17244 transitions. [2018-10-13 13:39:20,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:39:20,782 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 43 [2018-10-13 13:39:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:20,790 INFO L225 Difference]: With dead ends: 2181 [2018-10-13 13:39:20,790 INFO L226 Difference]: Without dead ends: 2181 [2018-10-13 13:39:20,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:39:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2018-10-13 13:39:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2035. [2018-10-13 13:39:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2018-10-13 13:39:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 16740 transitions. [2018-10-13 13:39:20,831 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 16740 transitions. Word has length 43 [2018-10-13 13:39:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:20,831 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 16740 transitions. [2018-10-13 13:39:20,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:39:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 16740 transitions. [2018-10-13 13:39:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:20,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:20,834 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] [2018-10-13 13:39:20,835 INFO L424 AbstractCegarLoop]: === Iteration 96 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:20,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash -611298463, now seen corresponding path program 1 times [2018-10-13 13:39:20,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:21,401 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-13 13:39:21,528 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-13 13:39:21,653 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-13 13:39:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:39:22,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:22,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:39:22,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:39:22,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:39:22,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:39:22,723 INFO L87 Difference]: Start difference. First operand 2035 states and 16740 transitions. Second operand 33 states. [2018-10-13 13:39:24,107 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-13 13:39:24,381 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-13 13:39:25,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:25,055 INFO L93 Difference]: Finished difference Result 2371 states and 18493 transitions. [2018-10-13 13:39:25,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:39:25,055 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 43 [2018-10-13 13:39:25,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:25,063 INFO L225 Difference]: With dead ends: 2371 [2018-10-13 13:39:25,063 INFO L226 Difference]: Without dead ends: 2371 [2018-10-13 13:39:25,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:39:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2018-10-13 13:39:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1992. [2018-10-13 13:39:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1992 states. [2018-10-13 13:39:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 16376 transitions. [2018-10-13 13:39:25,107 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 16376 transitions. Word has length 43 [2018-10-13 13:39:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:25,107 INFO L481 AbstractCegarLoop]: Abstraction has 1992 states and 16376 transitions. [2018-10-13 13:39:25,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:39:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 16376 transitions. [2018-10-13 13:39:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:25,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:25,110 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] [2018-10-13 13:39:25,110 INFO L424 AbstractCegarLoop]: === Iteration 97 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:25,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:25,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1301436664, now seen corresponding path program 1 times [2018-10-13 13:39:25,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:27,151 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 13:39:27,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:27,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:39:27,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:39:27,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:39:27,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:39:27,152 INFO L87 Difference]: Start difference. First operand 1992 states and 16376 transitions. Second operand 31 states. [2018-10-13 13:39:27,992 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-13 13:39:28,237 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-13 13:39:28,522 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-13 13:39:28,701 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 13:39:28,900 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-10-13 13:39:29,180 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-13 13:39:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:29,968 INFO L93 Difference]: Finished difference Result 2227 states and 17464 transitions. [2018-10-13 13:39:29,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:39:29,969 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 43 [2018-10-13 13:39:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:29,977 INFO L225 Difference]: With dead ends: 2227 [2018-10-13 13:39:29,977 INFO L226 Difference]: Without dead ends: 2227 [2018-10-13 13:39:29,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:39:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2018-10-13 13:39:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 1994. [2018-10-13 13:39:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1994 states. [2018-10-13 13:39:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 16394 transitions. [2018-10-13 13:39:30,018 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 16394 transitions. Word has length 43 [2018-10-13 13:39:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:30,018 INFO L481 AbstractCegarLoop]: Abstraction has 1994 states and 16394 transitions. [2018-10-13 13:39:30,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:39:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 16394 transitions. [2018-10-13 13:39:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:30,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:30,021 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] [2018-10-13 13:39:30,021 INFO L424 AbstractCegarLoop]: === Iteration 98 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:30,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1356251035, now seen corresponding path program 1 times [2018-10-13 13:39:30,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:30,903 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-13 13:39:31,079 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2018-10-13 13:39:31,263 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-13 13:39:31,566 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2018-10-13 13:39:31,890 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2018-10-13 13:39:32,199 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-13 13:39:32,491 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-13 13:39:32,772 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-13 13:39:33,045 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-13 13:39:33,304 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-13 13:39:33,563 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2018-10-13 13:39:33,810 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-13 13:39:34,033 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-13 13:39:34,231 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2018-10-13 13:39:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:39:34,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:34,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:39:34,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:39:34,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:39:34,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:39:34,653 INFO L87 Difference]: Start difference. First operand 1994 states and 16394 transitions. Second operand 33 states. [2018-10-13 13:39:35,537 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2018-10-13 13:39:35,705 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-13 13:39:35,886 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-13 13:39:36,140 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-13 13:39:36,523 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-10-13 13:39:37,018 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2018-10-13 13:39:37,548 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2018-10-13 13:39:37,973 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 95 [2018-10-13 13:39:38,491 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 94 [2018-10-13 13:39:38,882 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2018-10-13 13:39:39,472 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2018-10-13 13:39:40,056 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2018-10-13 13:39:40,531 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 103 [2018-10-13 13:39:40,953 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2018-10-13 13:39:41,515 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2018-10-13 13:39:42,020 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 102 [2018-10-13 13:39:42,598 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2018-10-13 13:39:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:43,884 INFO L93 Difference]: Finished difference Result 2794 states and 21204 transitions. [2018-10-13 13:39:43,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 13:39:43,884 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 43 [2018-10-13 13:39:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:43,894 INFO L225 Difference]: With dead ends: 2794 [2018-10-13 13:39:43,894 INFO L226 Difference]: Without dead ends: 2794 [2018-10-13 13:39:43,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=807, Invalid=2385, Unknown=0, NotChecked=0, Total=3192 [2018-10-13 13:39:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2018-10-13 13:39:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2052. [2018-10-13 13:39:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2018-10-13 13:39:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 16916 transitions. [2018-10-13 13:39:43,943 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 16916 transitions. Word has length 43 [2018-10-13 13:39:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:43,943 INFO L481 AbstractCegarLoop]: Abstraction has 2052 states and 16916 transitions. [2018-10-13 13:39:43,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:39:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 16916 transitions. [2018-10-13 13:39:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:43,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:43,946 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] [2018-10-13 13:39:43,946 INFO L424 AbstractCegarLoop]: === Iteration 99 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:43,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:43,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2097509523, now seen corresponding path program 1 times [2018-10-13 13:39:43,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:39:45,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:45,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:39:45,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:39:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:39:45,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:39:45,575 INFO L87 Difference]: Start difference. First operand 2052 states and 16916 transitions. Second operand 32 states. [2018-10-13 13:39:46,745 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-13 13:39:46,882 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2018-10-13 13:39:47,193 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-13 13:39:47,458 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:39:47,661 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-13 13:39:47,966 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:39:48,638 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-13 13:39:48,843 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-13 13:39:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:49,246 INFO L93 Difference]: Finished difference Result 3806 states and 30368 transitions. [2018-10-13 13:39:49,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:39:49,246 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 43 [2018-10-13 13:39:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:49,260 INFO L225 Difference]: With dead ends: 3806 [2018-10-13 13:39:49,260 INFO L226 Difference]: Without dead ends: 3806 [2018-10-13 13:39:49,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=700, Invalid=2056, Unknown=0, NotChecked=0, Total=2756 [2018-10-13 13:39:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2018-10-13 13:39:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3308. [2018-10-13 13:39:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2018-10-13 13:39:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 28220 transitions. [2018-10-13 13:39:49,339 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 28220 transitions. Word has length 43 [2018-10-13 13:39:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:49,339 INFO L481 AbstractCegarLoop]: Abstraction has 3308 states and 28220 transitions. [2018-10-13 13:39:49,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:39:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 28220 transitions. [2018-10-13 13:39:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:49,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:49,343 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] [2018-10-13 13:39:49,343 INFO L424 AbstractCegarLoop]: === Iteration 100 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:49,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:49,344 INFO L82 PathProgramCache]: Analyzing trace with hash -188468480, now seen corresponding path program 1 times [2018-10-13 13:39:49,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:50,700 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 13:39:50,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:50,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:39:50,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:39:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:39:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:39:50,701 INFO L87 Difference]: Start difference. First operand 3308 states and 28220 transitions. Second operand 30 states. [2018-10-13 13:39:51,647 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-13 13:39:51,882 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-13 13:39:52,035 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-13 13:39:52,173 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:39:52,794 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-13 13:39:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:52,975 INFO L93 Difference]: Finished difference Result 3652 states and 30504 transitions. [2018-10-13 13:39:52,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:39:52,976 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 43 [2018-10-13 13:39:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:52,990 INFO L225 Difference]: With dead ends: 3652 [2018-10-13 13:39:52,990 INFO L226 Difference]: Without dead ends: 3652 [2018-10-13 13:39:52,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:39:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2018-10-13 13:39:53,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3384. [2018-10-13 13:39:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3384 states. [2018-10-13 13:39:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 28904 transitions. [2018-10-13 13:39:53,067 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 28904 transitions. Word has length 43 [2018-10-13 13:39:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:53,067 INFO L481 AbstractCegarLoop]: Abstraction has 3384 states and 28904 transitions. [2018-10-13 13:39:53,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:39:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 28904 transitions. [2018-10-13 13:39:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:53,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:53,071 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] [2018-10-13 13:39:53,071 INFO L424 AbstractCegarLoop]: === Iteration 101 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:53,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1678373624, now seen corresponding path program 1 times [2018-10-13 13:39:53,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:53,849 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 13:39:53,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:53,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:39:53,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:39:53,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:39:53,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:39:53,850 INFO L87 Difference]: Start difference. First operand 3384 states and 28904 transitions. Second operand 26 states. [2018-10-13 13:39:54,855 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-13 13:39:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:55,330 INFO L93 Difference]: Finished difference Result 3696 states and 30755 transitions. [2018-10-13 13:39:55,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:39:55,331 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2018-10-13 13:39:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:55,344 INFO L225 Difference]: With dead ends: 3696 [2018-10-13 13:39:55,344 INFO L226 Difference]: Without dead ends: 3696 [2018-10-13 13:39:55,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:39:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2018-10-13 13:39:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3384. [2018-10-13 13:39:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3384 states. [2018-10-13 13:39:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 28904 transitions. [2018-10-13 13:39:55,418 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 28904 transitions. Word has length 43 [2018-10-13 13:39:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:55,418 INFO L481 AbstractCegarLoop]: Abstraction has 3384 states and 28904 transitions. [2018-10-13 13:39:55,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:39:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 28904 transitions. [2018-10-13 13:39:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:55,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:55,422 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 13:39:55,422 INFO L424 AbstractCegarLoop]: === Iteration 102 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:55,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:55,422 INFO L82 PathProgramCache]: Analyzing trace with hash -296013993, now seen corresponding path program 1 times [2018-10-13 13:39:55,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:55,935 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 13:39:55,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:55,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-13 13:39:55,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-13 13:39:55,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-13 13:39:55,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-10-13 13:39:55,936 INFO L87 Difference]: Start difference. First operand 3384 states and 28904 transitions. Second operand 18 states. [2018-10-13 13:39:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:39:56,787 INFO L93 Difference]: Finished difference Result 3547 states and 29580 transitions. [2018-10-13 13:39:56,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-13 13:39:56,787 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2018-10-13 13:39:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:39:56,800 INFO L225 Difference]: With dead ends: 3547 [2018-10-13 13:39:56,800 INFO L226 Difference]: Without dead ends: 3547 [2018-10-13 13:39:56,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:39:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2018-10-13 13:39:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3386. [2018-10-13 13:39:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2018-10-13 13:39:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 28969 transitions. [2018-10-13 13:39:56,873 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 28969 transitions. Word has length 43 [2018-10-13 13:39:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:39:56,873 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 28969 transitions. [2018-10-13 13:39:56,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-13 13:39:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 28969 transitions. [2018-10-13 13:39:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:39:56,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:39:56,877 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] [2018-10-13 13:39:56,877 INFO L424 AbstractCegarLoop]: === Iteration 103 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:39:56,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:39:56,878 INFO L82 PathProgramCache]: Analyzing trace with hash 68759907, now seen corresponding path program 1 times [2018-10-13 13:39:56,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:39:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:39:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:39:59,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:39:59,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:39:59,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:39:59,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:39:59,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:39:59,284 INFO L87 Difference]: Start difference. First operand 3386 states and 28969 transitions. Second operand 34 states. [2018-10-13 13:40:00,303 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2018-10-13 13:40:00,651 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-13 13:40:00,831 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-13 13:40:01,063 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-13 13:40:01,353 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2018-10-13 13:40:01,548 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2018-10-13 13:40:02,227 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-13 13:40:02,919 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2018-10-13 13:40:03,109 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2018-10-13 13:40:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:03,480 INFO L93 Difference]: Finished difference Result 6288 states and 52645 transitions. [2018-10-13 13:40:03,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:40:03,480 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 43 [2018-10-13 13:40:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:03,502 INFO L225 Difference]: With dead ends: 6288 [2018-10-13 13:40:03,502 INFO L226 Difference]: Without dead ends: 6288 [2018-10-13 13:40:03,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2018-10-13 13:40:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2018-10-13 13:40:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 4640. [2018-10-13 13:40:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2018-10-13 13:40:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 40255 transitions. [2018-10-13 13:40:03,617 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 40255 transitions. Word has length 43 [2018-10-13 13:40:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:03,617 INFO L481 AbstractCegarLoop]: Abstraction has 4640 states and 40255 transitions. [2018-10-13 13:40:03,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:40:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 40255 transitions. [2018-10-13 13:40:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:03,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:03,622 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] [2018-10-13 13:40:03,622 INFO L424 AbstractCegarLoop]: === Iteration 104 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:03,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:03,622 INFO L82 PathProgramCache]: Analyzing trace with hash 491589890, now seen corresponding path program 1 times [2018-10-13 13:40:03,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:04,783 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 13:40:04,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:40:04,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:40:04,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:40:04,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:40:04,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:40:04,784 INFO L87 Difference]: Start difference. First operand 4640 states and 40255 transitions. Second operand 30 states. [2018-10-13 13:40:06,691 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-10-13 13:40:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:06,825 INFO L93 Difference]: Finished difference Result 4928 states and 42414 transitions. [2018-10-13 13:40:06,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:40:06,826 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 43 [2018-10-13 13:40:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:06,844 INFO L225 Difference]: With dead ends: 4928 [2018-10-13 13:40:06,844 INFO L226 Difference]: Without dead ends: 4928 [2018-10-13 13:40:06,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:40:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2018-10-13 13:40:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4848. [2018-10-13 13:40:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4848 states. [2018-10-13 13:40:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 42127 transitions. [2018-10-13 13:40:06,949 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 42127 transitions. Word has length 43 [2018-10-13 13:40:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 4848 states and 42127 transitions. [2018-10-13 13:40:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:40:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 42127 transitions. [2018-10-13 13:40:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:06,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:06,954 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] [2018-10-13 13:40:06,954 INFO L424 AbstractCegarLoop]: === Iteration 105 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:06,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash -998315254, now seen corresponding path program 1 times [2018-10-13 13:40:06,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:08,241 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 13:40:08,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:40:08,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:40:08,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:40:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:40:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:40:08,242 INFO L87 Difference]: Start difference. First operand 4848 states and 42127 transitions. Second operand 26 states. [2018-10-13 13:40:08,780 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2018-10-13 13:40:09,091 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-13 13:40:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:09,864 INFO L93 Difference]: Finished difference Result 5153 states and 43714 transitions. [2018-10-13 13:40:09,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:40:09,865 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2018-10-13 13:40:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:09,882 INFO L225 Difference]: With dead ends: 5153 [2018-10-13 13:40:09,883 INFO L226 Difference]: Without dead ends: 5153 [2018-10-13 13:40:09,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:40:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2018-10-13 13:40:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 4884. [2018-10-13 13:40:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4884 states. [2018-10-13 13:40:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 42451 transitions. [2018-10-13 13:40:09,989 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 42451 transitions. Word has length 43 [2018-10-13 13:40:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:09,989 INFO L481 AbstractCegarLoop]: Abstraction has 4884 states and 42451 transitions. [2018-10-13 13:40:09,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:40:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 42451 transitions. [2018-10-13 13:40:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:09,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:09,994 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 13:40:09,994 INFO L424 AbstractCegarLoop]: === Iteration 106 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:09,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash 384044377, now seen corresponding path program 1 times [2018-10-13 13:40:09,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:10,672 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 13:40:10,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:40:10,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-13 13:40:10,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-13 13:40:10,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-13 13:40:10,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-10-13 13:40:10,673 INFO L87 Difference]: Start difference. First operand 4884 states and 42451 transitions. Second operand 20 states. [2018-10-13 13:40:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:12,735 INFO L93 Difference]: Finished difference Result 5360 states and 45122 transitions. [2018-10-13 13:40:12,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:40:12,736 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2018-10-13 13:40:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:12,755 INFO L225 Difference]: With dead ends: 5360 [2018-10-13 13:40:12,755 INFO L226 Difference]: Without dead ends: 5360 [2018-10-13 13:40:12,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=322, Invalid=734, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:40:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2018-10-13 13:40:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 5011. [2018-10-13 13:40:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5011 states. [2018-10-13 13:40:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 43507 transitions. [2018-10-13 13:40:12,864 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 43507 transitions. Word has length 43 [2018-10-13 13:40:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:12,865 INFO L481 AbstractCegarLoop]: Abstraction has 5011 states and 43507 transitions. [2018-10-13 13:40:12,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-13 13:40:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 43507 transitions. [2018-10-13 13:40:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:12,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:12,870 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] [2018-10-13 13:40:12,870 INFO L424 AbstractCegarLoop]: === Iteration 107 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:12,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:12,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2050233656, now seen corresponding path program 1 times [2018-10-13 13:40:12,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:40:15,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:15,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2018-10-13 13:40:15,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:40:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:40:15,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:40:15,019 INFO L87 Difference]: Start difference. First operand 5011 states and 43507 transitions. Second operand 32 states. [2018-10-13 13:40:15,916 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-10-13 13:40:16,112 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2018-10-13 13:40:16,374 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-13 13:40:16,737 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2018-10-13 13:40:16,949 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2018-10-13 13:40:17,158 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2018-10-13 13:40:17,392 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2018-10-13 13:40:17,643 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-13 13:40:17,907 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2018-10-13 13:40:18,145 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2018-10-13 13:40:18,403 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2018-10-13 13:40:18,695 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2018-10-13 13:40:18,963 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2018-10-13 13:40:19,945 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-13 13:40:20,186 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2018-10-13 13:40:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:20,675 INFO L93 Difference]: Finished difference Result 6336 states and 52161 transitions. [2018-10-13 13:40:20,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 13:40:20,675 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 43 [2018-10-13 13:40:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:20,696 INFO L225 Difference]: With dead ends: 6336 [2018-10-13 13:40:20,697 INFO L226 Difference]: Without dead ends: 6336 [2018-10-13 13:40:20,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=776, Invalid=2194, Unknown=0, NotChecked=0, Total=2970 [2018-10-13 13:40:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2018-10-13 13:40:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 5373. [2018-10-13 13:40:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5373 states. [2018-10-13 13:40:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 46765 transitions. [2018-10-13 13:40:20,806 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 46765 transitions. Word has length 43 [2018-10-13 13:40:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:20,806 INFO L481 AbstractCegarLoop]: Abstraction has 5373 states and 46765 transitions. [2018-10-13 13:40:20,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:40:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 46765 transitions. [2018-10-13 13:40:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:20,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:20,811 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] [2018-10-13 13:40:20,812 INFO L424 AbstractCegarLoop]: === Iteration 108 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:20,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:20,812 INFO L82 PathProgramCache]: Analyzing trace with hash 754828496, now seen corresponding path program 1 times [2018-10-13 13:40:20,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:40:22,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:22,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2018-10-13 13:40:22,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:40:22,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:40:22,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:40:22,881 INFO L87 Difference]: Start difference. First operand 5373 states and 46765 transitions. Second operand 31 states. [2018-10-13 13:40:24,010 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2018-10-13 13:40:24,263 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2018-10-13 13:40:24,403 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-13 13:40:24,660 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-13 13:40:24,824 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-10-13 13:40:24,994 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2018-10-13 13:40:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:25,983 INFO L93 Difference]: Finished difference Result 6697 states and 55782 transitions. [2018-10-13 13:40:25,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:40:25,984 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 43 [2018-10-13 13:40:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:26,007 INFO L225 Difference]: With dead ends: 6697 [2018-10-13 13:40:26,008 INFO L226 Difference]: Without dead ends: 6697 [2018-10-13 13:40:26,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:40:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6697 states. [2018-10-13 13:40:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6697 to 5383. [2018-10-13 13:40:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5383 states. [2018-10-13 13:40:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5383 states to 5383 states and 46855 transitions. [2018-10-13 13:40:26,134 INFO L78 Accepts]: Start accepts. Automaton has 5383 states and 46855 transitions. Word has length 43 [2018-10-13 13:40:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:26,134 INFO L481 AbstractCegarLoop]: Abstraction has 5383 states and 46855 transitions. [2018-10-13 13:40:26,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:40:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5383 states and 46855 transitions. [2018-10-13 13:40:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:26,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:26,141 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 13:40:26,141 INFO L424 AbstractCegarLoop]: === Iteration 109 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:26,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2137188127, now seen corresponding path program 1 times [2018-10-13 13:40:26,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:27,686 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 13:40:27,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:27,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2018-10-13 13:40:27,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:40:27,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:40:27,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:40:27,687 INFO L87 Difference]: Start difference. First operand 5383 states and 46855 transitions. Second operand 31 states. [2018-10-13 13:40:28,570 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-13 13:40:28,796 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-10-13 13:40:28,929 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-13 13:40:29,307 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-13 13:40:29,550 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-13 13:40:29,868 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-13 13:40:30,252 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-13 13:40:30,412 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-10-13 13:40:30,781 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-13 13:40:30,912 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-13 13:40:31,138 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-13 13:40:31,333 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-13 13:40:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:31,857 INFO L93 Difference]: Finished difference Result 5881 states and 49405 transitions. [2018-10-13 13:40:31,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:40:31,858 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 43 [2018-10-13 13:40:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:31,879 INFO L225 Difference]: With dead ends: 5881 [2018-10-13 13:40:31,879 INFO L226 Difference]: Without dead ends: 5881 [2018-10-13 13:40:31,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=751, Invalid=2005, Unknown=0, NotChecked=0, Total=2756 [2018-10-13 13:40:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2018-10-13 13:40:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5487. [2018-10-13 13:40:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5487 states. [2018-10-13 13:40:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 47791 transitions. [2018-10-13 13:40:32,127 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 47791 transitions. Word has length 43 [2018-10-13 13:40:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:32,127 INFO L481 AbstractCegarLoop]: Abstraction has 5487 states and 47791 transitions. [2018-10-13 13:40:32,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:40:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 47791 transitions. [2018-10-13 13:40:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:32,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:32,134 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] [2018-10-13 13:40:32,134 INFO L424 AbstractCegarLoop]: === Iteration 110 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:32,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:32,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2114945236, now seen corresponding path program 1 times [2018-10-13 13:40:32,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:40:32,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:32,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-13 13:40:32,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:40:32,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:40:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:40:32,901 INFO L87 Difference]: Start difference. First operand 5487 states and 47791 transitions. Second operand 27 states. [2018-10-13 13:40:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:35,567 INFO L93 Difference]: Finished difference Result 6866 states and 57327 transitions. [2018-10-13 13:40:35,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:40:35,568 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 43 [2018-10-13 13:40:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:35,592 INFO L225 Difference]: With dead ends: 6866 [2018-10-13 13:40:35,593 INFO L226 Difference]: Without dead ends: 6866 [2018-10-13 13:40:35,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=548, Invalid=1432, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:40:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2018-10-13 13:40:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 5805. [2018-10-13 13:40:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5805 states. [2018-10-13 13:40:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 50653 transitions. [2018-10-13 13:40:35,728 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 50653 transitions. Word has length 43 [2018-10-13 13:40:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:35,728 INFO L481 AbstractCegarLoop]: Abstraction has 5805 states and 50653 transitions. [2018-10-13 13:40:35,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:40:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 50653 transitions. [2018-10-13 13:40:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:35,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:35,735 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] [2018-10-13 13:40:35,735 INFO L424 AbstractCegarLoop]: === Iteration 111 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:35,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1943358867, now seen corresponding path program 2 times [2018-10-13 13:40:35,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:40:36,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:40:36,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:40:36,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:40:36,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:40:36,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:40:36,684 INFO L87 Difference]: Start difference. First operand 5805 states and 50653 transitions. Second operand 31 states. [2018-10-13 13:40:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:39,262 INFO L93 Difference]: Finished difference Result 7559 states and 64374 transitions. [2018-10-13 13:40:39,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:40:39,263 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 43 [2018-10-13 13:40:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:39,290 INFO L225 Difference]: With dead ends: 7559 [2018-10-13 13:40:39,290 INFO L226 Difference]: Without dead ends: 7559 [2018-10-13 13:40:39,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=442, Invalid=1628, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:40:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7559 states. [2018-10-13 13:40:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7559 to 7299. [2018-10-13 13:40:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7299 states. [2018-10-13 13:40:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 64099 transitions. [2018-10-13 13:40:39,454 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 64099 transitions. Word has length 43 [2018-10-13 13:40:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:39,455 INFO L481 AbstractCegarLoop]: Abstraction has 7299 states and 64099 transitions. [2018-10-13 13:40:39,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:40:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 64099 transitions. [2018-10-13 13:40:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:39,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:39,464 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] [2018-10-13 13:40:39,464 INFO L424 AbstractCegarLoop]: === Iteration 112 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:39,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -819905320, now seen corresponding path program 1 times [2018-10-13 13:40:39,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:40,052 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-10-13 13:40:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:40:40,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:40,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-13 13:40:40,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:40:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:40:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:40:40,404 INFO L87 Difference]: Start difference. First operand 7299 states and 64099 transitions. Second operand 29 states. [2018-10-13 13:40:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:42,199 INFO L93 Difference]: Finished difference Result 8327 states and 71551 transitions. [2018-10-13 13:40:42,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:40:42,199 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 43 [2018-10-13 13:40:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:42,228 INFO L225 Difference]: With dead ends: 8327 [2018-10-13 13:40:42,229 INFO L226 Difference]: Without dead ends: 8327 [2018-10-13 13:40:42,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=387, Invalid=1335, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:40:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8327 states. [2018-10-13 13:40:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8327 to 7299. [2018-10-13 13:40:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7299 states. [2018-10-13 13:40:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 64099 transitions. [2018-10-13 13:40:42,393 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 64099 transitions. Word has length 43 [2018-10-13 13:40:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:42,394 INFO L481 AbstractCegarLoop]: Abstraction has 7299 states and 64099 transitions. [2018-10-13 13:40:42,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:40:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 64099 transitions. [2018-10-13 13:40:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:42,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:42,400 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 13:40:42,401 INFO L424 AbstractCegarLoop]: === Iteration 113 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:42,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:42,401 INFO L82 PathProgramCache]: Analyzing trace with hash 562454311, now seen corresponding path program 1 times [2018-10-13 13:40:42,401 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:42,824 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2018-10-13 13:40:43,172 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2018-10-13 13:40:44,093 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 13:40:44,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:44,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-13 13:40:44,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:40:44,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:40:44,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:40:44,094 INFO L87 Difference]: Start difference. First operand 7299 states and 64099 transitions. Second operand 27 states. [2018-10-13 13:40:46,316 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-13 13:40:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:46,624 INFO L93 Difference]: Finished difference Result 8174 states and 69912 transitions. [2018-10-13 13:40:46,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:40:46,624 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 43 [2018-10-13 13:40:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:46,653 INFO L225 Difference]: With dead ends: 8174 [2018-10-13 13:40:46,653 INFO L226 Difference]: Without dead ends: 8174 [2018-10-13 13:40:46,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=476, Invalid=1330, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:40:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2018-10-13 13:40:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 7422. [2018-10-13 13:40:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7422 states. [2018-10-13 13:40:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 65167 transitions. [2018-10-13 13:40:46,825 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 65167 transitions. Word has length 43 [2018-10-13 13:40:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:46,825 INFO L481 AbstractCegarLoop]: Abstraction has 7422 states and 65167 transitions. [2018-10-13 13:40:46,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:40:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 65167 transitions. [2018-10-13 13:40:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:46,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:46,833 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] [2018-10-13 13:40:46,833 INFO L424 AbstractCegarLoop]: === Iteration 114 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:46,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:46,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1012279505, now seen corresponding path program 1 times [2018-10-13 13:40:46,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:47,670 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 13:40:47,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:47,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-10-13 13:40:47,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-13 13:40:47,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-13 13:40:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-10-13 13:40:47,671 INFO L87 Difference]: Start difference. First operand 7422 states and 65167 transitions. Second operand 19 states. [2018-10-13 13:40:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:49,219 INFO L93 Difference]: Finished difference Result 8893 states and 75209 transitions. [2018-10-13 13:40:49,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:40:49,220 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2018-10-13 13:40:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:49,251 INFO L225 Difference]: With dead ends: 8893 [2018-10-13 13:40:49,251 INFO L226 Difference]: Without dead ends: 8893 [2018-10-13 13:40:49,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:40:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2018-10-13 13:40:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 7452. [2018-10-13 13:40:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7452 states. [2018-10-13 13:40:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 65437 transitions. [2018-10-13 13:40:49,427 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 65437 transitions. Word has length 43 [2018-10-13 13:40:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:49,427 INFO L481 AbstractCegarLoop]: Abstraction has 7452 states and 65437 transitions. [2018-10-13 13:40:49,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-13 13:40:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 65437 transitions. [2018-10-13 13:40:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-13 13:40:49,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:49,435 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 13:40:49,435 INFO L424 AbstractCegarLoop]: === Iteration 115 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:49,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash 290431550, now seen corresponding path program 1 times [2018-10-13 13:40:49,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:49,742 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 13:40:49,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:49,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-13 13:40:49,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-13 13:40:49,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-13 13:40:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-10-13 13:40:49,743 INFO L87 Difference]: Start difference. First operand 7452 states and 65437 transitions. Second operand 16 states. [2018-10-13 13:40:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:50,431 INFO L93 Difference]: Finished difference Result 7662 states and 66339 transitions. [2018-10-13 13:40:50,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-13 13:40:50,432 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2018-10-13 13:40:50,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:50,460 INFO L225 Difference]: With dead ends: 7662 [2018-10-13 13:40:50,460 INFO L226 Difference]: Without dead ends: 7662 [2018-10-13 13:40:50,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-10-13 13:40:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7662 states. [2018-10-13 13:40:50,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7662 to 7510. [2018-10-13 13:40:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7510 states. [2018-10-13 13:40:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 65737 transitions. [2018-10-13 13:40:50,628 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 65737 transitions. Word has length 43 [2018-10-13 13:40:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:50,628 INFO L481 AbstractCegarLoop]: Abstraction has 7510 states and 65737 transitions. [2018-10-13 13:40:50,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-13 13:40:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 65737 transitions. [2018-10-13 13:40:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:40:50,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:50,636 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] [2018-10-13 13:40:50,637 INFO L424 AbstractCegarLoop]: === Iteration 116 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:50,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:50,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1687080254, now seen corresponding path program 1 times [2018-10-13 13:40:50,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:51,093 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 13:40:51,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:40:51,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-13 13:40:51,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:40:51,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:40:51,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:40:51,094 INFO L87 Difference]: Start difference. First operand 7510 states and 65737 transitions. Second operand 24 states. [2018-10-13 13:40:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:52,677 INFO L93 Difference]: Finished difference Result 20222 states and 177936 transitions. [2018-10-13 13:40:52,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:40:52,677 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-10-13 13:40:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:52,753 INFO L225 Difference]: With dead ends: 20222 [2018-10-13 13:40:52,753 INFO L226 Difference]: Without dead ends: 20222 [2018-10-13 13:40:52,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=313, Invalid=809, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:40:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20222 states. [2018-10-13 13:40:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20222 to 19852. [2018-10-13 13:40:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19852 states. [2018-10-13 13:40:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19852 states to 19852 states and 176632 transitions. [2018-10-13 13:40:53,238 INFO L78 Accepts]: Start accepts. Automaton has 19852 states and 176632 transitions. Word has length 44 [2018-10-13 13:40:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:53,238 INFO L481 AbstractCegarLoop]: Abstraction has 19852 states and 176632 transitions. [2018-10-13 13:40:53,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:40:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19852 states and 176632 transitions. [2018-10-13 13:40:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:40:53,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:53,251 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 13:40:53,251 INFO L424 AbstractCegarLoop]: === Iteration 117 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:53,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1406965821, now seen corresponding path program 1 times [2018-10-13 13:40:53,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:53,712 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 13:40:53,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:40:53,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-10-13 13:40:53,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-13 13:40:53,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-13 13:40:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2018-10-13 13:40:53,712 INFO L87 Difference]: Start difference. First operand 19852 states and 176632 transitions. Second operand 19 states. [2018-10-13 13:40:53,974 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-13 13:40:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:40:55,439 INFO L93 Difference]: Finished difference Result 20521 states and 180997 transitions. [2018-10-13 13:40:55,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:40:55,439 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2018-10-13 13:40:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:40:55,522 INFO L225 Difference]: With dead ends: 20521 [2018-10-13 13:40:55,522 INFO L226 Difference]: Without dead ends: 20521 [2018-10-13 13:40:55,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=284, Invalid=646, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:40:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20521 states. [2018-10-13 13:40:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20521 to 20051. [2018-10-13 13:40:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20051 states. [2018-10-13 13:40:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 178319 transitions. [2018-10-13 13:40:56,019 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 178319 transitions. Word has length 44 [2018-10-13 13:40:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:40:56,019 INFO L481 AbstractCegarLoop]: Abstraction has 20051 states and 178319 transitions. [2018-10-13 13:40:56,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-13 13:40:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 178319 transitions. [2018-10-13 13:40:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:40:56,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:40:56,032 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:40:56,032 INFO L424 AbstractCegarLoop]: === Iteration 118 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:40:56,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:40:56,033 INFO L82 PathProgramCache]: Analyzing trace with hash 237515088, now seen corresponding path program 1 times [2018-10-13 13:40:56,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:40:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:40:56,555 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2018-10-13 13:40:56,696 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2018-10-13 13:40:56,850 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2018-10-13 13:40:57,025 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-13 13:40:57,205 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2018-10-13 13:40:57,392 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-13 13:40:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:40:58,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:40:58,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:40:58,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:40:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:40:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:40:58,352 INFO L87 Difference]: Start difference. First operand 20051 states and 178319 transitions. Second operand 34 states. [2018-10-13 13:41:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:00,487 INFO L93 Difference]: Finished difference Result 24474 states and 216941 transitions. [2018-10-13 13:41:00,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:41:00,488 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2018-10-13 13:41:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:01,000 INFO L225 Difference]: With dead ends: 24474 [2018-10-13 13:41:01,000 INFO L226 Difference]: Without dead ends: 24474 [2018-10-13 13:41:01,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2018-10-13 13:41:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24474 states. [2018-10-13 13:41:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24474 to 21759. [2018-10-13 13:41:01,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21759 states. [2018-10-13 13:41:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21759 states to 21759 states and 193691 transitions. [2018-10-13 13:41:01,502 INFO L78 Accepts]: Start accepts. Automaton has 21759 states and 193691 transitions. Word has length 44 [2018-10-13 13:41:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:01,502 INFO L481 AbstractCegarLoop]: Abstraction has 21759 states and 193691 transitions. [2018-10-13 13:41:01,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:41:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 21759 states and 193691 transitions. [2018-10-13 13:41:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:01,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:01,515 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] [2018-10-13 13:41:01,515 INFO L424 AbstractCegarLoop]: === Iteration 119 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:01,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:01,516 INFO L82 PathProgramCache]: Analyzing trace with hash 299335385, now seen corresponding path program 1 times [2018-10-13 13:41:01,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:01,689 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-13 13:41:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:41:02,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:02,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:41:02,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:41:02,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:41:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:41:02,927 INFO L87 Difference]: Start difference. First operand 21759 states and 193691 transitions. Second operand 27 states. [2018-10-13 13:41:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:04,521 INFO L93 Difference]: Finished difference Result 22472 states and 198969 transitions. [2018-10-13 13:41:04,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:41:04,521 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-13 13:41:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:04,613 INFO L225 Difference]: With dead ends: 22472 [2018-10-13 13:41:04,613 INFO L226 Difference]: Without dead ends: 22472 [2018-10-13 13:41:04,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2018-10-13 13:41:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22472 states. [2018-10-13 13:41:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22472 to 21073. [2018-10-13 13:41:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21073 states. [2018-10-13 13:41:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21073 states to 21073 states and 187517 transitions. [2018-10-13 13:41:05,124 INFO L78 Accepts]: Start accepts. Automaton has 21073 states and 187517 transitions. Word has length 44 [2018-10-13 13:41:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:05,124 INFO L481 AbstractCegarLoop]: Abstraction has 21073 states and 187517 transitions. [2018-10-13 13:41:05,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:41:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 21073 states and 187517 transitions. [2018-10-13 13:41:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:05,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:05,136 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] [2018-10-13 13:41:05,136 INFO L424 AbstractCegarLoop]: === Iteration 120 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:05,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:05,136 INFO L82 PathProgramCache]: Analyzing trace with hash 413851989, now seen corresponding path program 1 times [2018-10-13 13:41:05,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:05,500 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:41:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:41:06,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:06,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:41:06,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:41:06,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:41:06,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:41:06,595 INFO L87 Difference]: Start difference. First operand 21073 states and 187517 transitions. Second operand 29 states. [2018-10-13 13:41:07,577 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-10-13 13:41:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:08,191 INFO L93 Difference]: Finished difference Result 21212 states and 188233 transitions. [2018-10-13 13:41:08,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:41:08,191 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-13 13:41:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:08,277 INFO L225 Difference]: With dead ends: 21212 [2018-10-13 13:41:08,277 INFO L226 Difference]: Without dead ends: 21212 [2018-10-13 13:41:08,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:41:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21212 states. [2018-10-13 13:41:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21212 to 21145. [2018-10-13 13:41:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21145 states. [2018-10-13 13:41:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21145 states to 21145 states and 188165 transitions. [2018-10-13 13:41:08,773 INFO L78 Accepts]: Start accepts. Automaton has 21145 states and 188165 transitions. Word has length 44 [2018-10-13 13:41:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:08,773 INFO L481 AbstractCegarLoop]: Abstraction has 21145 states and 188165 transitions. [2018-10-13 13:41:08,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:41:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 21145 states and 188165 transitions. [2018-10-13 13:41:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:08,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:08,785 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] [2018-10-13 13:41:08,785 INFO L424 AbstractCegarLoop]: === Iteration 121 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:08,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash 642885197, now seen corresponding path program 1 times [2018-10-13 13:41:08,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:41:10,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:10,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:41:10,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:41:10,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:41:10,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:41:10,142 INFO L87 Difference]: Start difference. First operand 21145 states and 188165 transitions. Second operand 28 states. [2018-10-13 13:41:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:11,165 INFO L93 Difference]: Finished difference Result 21296 states and 188957 transitions. [2018-10-13 13:41:11,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:41:11,165 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 44 [2018-10-13 13:41:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:11,252 INFO L225 Difference]: With dead ends: 21296 [2018-10-13 13:41:11,252 INFO L226 Difference]: Without dead ends: 21296 [2018-10-13 13:41:11,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=407, Invalid=1233, Unknown=0, NotChecked=0, Total=1640 [2018-10-13 13:41:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21296 states. [2018-10-13 13:41:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21296 to 20909. [2018-10-13 13:41:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20909 states. [2018-10-13 13:41:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20909 states to 20909 states and 186041 transitions. [2018-10-13 13:41:11,747 INFO L78 Accepts]: Start accepts. Automaton has 20909 states and 186041 transitions. Word has length 44 [2018-10-13 13:41:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:11,747 INFO L481 AbstractCegarLoop]: Abstraction has 20909 states and 186041 transitions. [2018-10-13 13:41:11,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:41:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 20909 states and 186041 transitions. [2018-10-13 13:41:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:11,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:11,759 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] [2018-10-13 13:41:11,759 INFO L424 AbstractCegarLoop]: === Iteration 122 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:11,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash -306384610, now seen corresponding path program 1 times [2018-10-13 13:41:11,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:12,117 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2018-10-13 13:41:12,294 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2018-10-13 13:41:13,821 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-10-13 13:41:14,174 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 13:41:14,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:14,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-13 13:41:14,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:41:14,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:41:14,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:41:14,175 INFO L87 Difference]: Start difference. First operand 20909 states and 186041 transitions. Second operand 24 states. [2018-10-13 13:41:14,864 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2018-10-13 13:41:15,005 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2018-10-13 13:41:15,342 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-13 13:41:15,499 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2018-10-13 13:41:15,631 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-10-13 13:41:15,887 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2018-10-13 13:41:16,315 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2018-10-13 13:41:16,615 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-13 13:41:16,754 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2018-10-13 13:41:17,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:17,191 INFO L93 Difference]: Finished difference Result 22796 states and 200459 transitions. [2018-10-13 13:41:17,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:41:17,191 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-10-13 13:41:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:17,284 INFO L225 Difference]: With dead ends: 22796 [2018-10-13 13:41:17,284 INFO L226 Difference]: Without dead ends: 22794 [2018-10-13 13:41:17,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:41:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22794 states. [2018-10-13 13:41:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22794 to 22373. [2018-10-13 13:41:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22373 states. [2018-10-13 13:41:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22373 states to 22373 states and 199018 transitions. [2018-10-13 13:41:17,822 INFO L78 Accepts]: Start accepts. Automaton has 22373 states and 199018 transitions. Word has length 44 [2018-10-13 13:41:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:17,822 INFO L481 AbstractCegarLoop]: Abstraction has 22373 states and 199018 transitions. [2018-10-13 13:41:17,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:41:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 22373 states and 199018 transitions. [2018-10-13 13:41:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:17,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:17,835 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] [2018-10-13 13:41:17,835 INFO L424 AbstractCegarLoop]: === Iteration 123 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:17,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash 71137812, now seen corresponding path program 1 times [2018-10-13 13:41:17,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:19,291 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 13:41:19,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:19,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:41:19,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:41:19,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:41:19,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:41:19,292 INFO L87 Difference]: Start difference. First operand 22373 states and 199018 transitions. Second operand 29 states. [2018-10-13 13:41:21,622 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-13 13:41:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:22,707 INFO L93 Difference]: Finished difference Result 22935 states and 202495 transitions. [2018-10-13 13:41:22,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:41:22,708 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-13 13:41:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:22,800 INFO L225 Difference]: With dead ends: 22935 [2018-10-13 13:41:22,800 INFO L226 Difference]: Without dead ends: 22935 [2018-10-13 13:41:22,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=522, Invalid=1548, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:41:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22935 states. [2018-10-13 13:41:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22935 to 22654. [2018-10-13 13:41:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22654 states. [2018-10-13 13:41:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22654 states to 22654 states and 201507 transitions. [2018-10-13 13:41:23,342 INFO L78 Accepts]: Start accepts. Automaton has 22654 states and 201507 transitions. Word has length 44 [2018-10-13 13:41:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:23,342 INFO L481 AbstractCegarLoop]: Abstraction has 22654 states and 201507 transitions. [2018-10-13 13:41:23,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:41:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 22654 states and 201507 transitions. [2018-10-13 13:41:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:23,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:23,355 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] [2018-10-13 13:41:23,355 INFO L424 AbstractCegarLoop]: === Iteration 124 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:23,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:23,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1128718604, now seen corresponding path program 1 times [2018-10-13 13:41:23,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:24,219 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 13:41:24,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:24,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:41:24,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:41:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:41:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:41:24,220 INFO L87 Difference]: Start difference. First operand 22654 states and 201507 transitions. Second operand 27 states. [2018-10-13 13:41:26,256 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-10-13 13:41:26,376 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2018-10-13 13:41:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:26,785 INFO L93 Difference]: Finished difference Result 23584 states and 207962 transitions. [2018-10-13 13:41:26,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:41:26,785 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-13 13:41:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:26,881 INFO L225 Difference]: With dead ends: 23584 [2018-10-13 13:41:26,881 INFO L226 Difference]: Without dead ends: 23584 [2018-10-13 13:41:26,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:41:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23584 states. [2018-10-13 13:41:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23584 to 23144. [2018-10-13 13:41:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23144 states. [2018-10-13 13:41:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 205917 transitions. [2018-10-13 13:41:27,446 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 205917 transitions. Word has length 44 [2018-10-13 13:41:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:27,446 INFO L481 AbstractCegarLoop]: Abstraction has 23144 states and 205917 transitions. [2018-10-13 13:41:27,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:41:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 205917 transitions. [2018-10-13 13:41:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:27,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:27,459 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] [2018-10-13 13:41:27,460 INFO L424 AbstractCegarLoop]: === Iteration 125 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:27,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:27,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2108667900, now seen corresponding path program 1 times [2018-10-13 13:41:27,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:30,459 WARN L178 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 30 [2018-10-13 13:41:30,653 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 13:41:30,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:30,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-13 13:41:30,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:41:30,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:41:30,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:41:30,654 INFO L87 Difference]: Start difference. First operand 23144 states and 205917 transitions. Second operand 24 states. [2018-10-13 13:41:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:32,426 INFO L93 Difference]: Finished difference Result 23351 states and 206670 transitions. [2018-10-13 13:41:32,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:41:32,427 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-10-13 13:41:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:32,522 INFO L225 Difference]: With dead ends: 23351 [2018-10-13 13:41:32,522 INFO L226 Difference]: Without dead ends: 23351 [2018-10-13 13:41:32,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 13:41:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23351 states. [2018-10-13 13:41:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23351 to 23148. [2018-10-13 13:41:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23148 states. [2018-10-13 13:41:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23148 states to 23148 states and 205953 transitions. [2018-10-13 13:41:33,046 INFO L78 Accepts]: Start accepts. Automaton has 23148 states and 205953 transitions. Word has length 44 [2018-10-13 13:41:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:33,046 INFO L481 AbstractCegarLoop]: Abstraction has 23148 states and 205953 transitions. [2018-10-13 13:41:33,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:41:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 23148 states and 205953 transitions. [2018-10-13 13:41:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:33,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:33,059 INFO L375 BasicCegarLoop]: trace histogram [4, 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] [2018-10-13 13:41:33,059 INFO L424 AbstractCegarLoop]: === Iteration 126 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:33,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:33,059 INFO L82 PathProgramCache]: Analyzing trace with hash -40876154, now seen corresponding path program 3 times [2018-10-13 13:41:33,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:41:34,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:34,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:41:34,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:41:34,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:41:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:41:34,902 INFO L87 Difference]: Start difference. First operand 23148 states and 205953 transitions. Second operand 33 states. [2018-10-13 13:41:36,365 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-13 13:41:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:37,536 INFO L93 Difference]: Finished difference Result 24768 states and 219104 transitions. [2018-10-13 13:41:37,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:41:37,537 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 44 [2018-10-13 13:41:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:37,640 INFO L225 Difference]: With dead ends: 24768 [2018-10-13 13:41:37,640 INFO L226 Difference]: Without dead ends: 24768 [2018-10-13 13:41:37,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=507, Invalid=1845, Unknown=0, NotChecked=0, Total=2352 [2018-10-13 13:41:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24768 states. [2018-10-13 13:41:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24768 to 5307. [2018-10-13 13:41:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5307 states. [2018-10-13 13:41:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 45543 transitions. [2018-10-13 13:41:38,384 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 45543 transitions. Word has length 44 [2018-10-13 13:41:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:38,385 INFO L481 AbstractCegarLoop]: Abstraction has 5307 states and 45543 transitions. [2018-10-13 13:41:38,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:41:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 45543 transitions. [2018-10-13 13:41:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:38,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:38,391 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] [2018-10-13 13:41:38,392 INFO L424 AbstractCegarLoop]: === Iteration 127 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:38,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:38,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2017040653, now seen corresponding path program 1 times [2018-10-13 13:41:38,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:39,127 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-13 13:41:39,326 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-10-13 13:41:39,462 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-13 13:41:39,597 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-13 13:41:39,728 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-13 13:41:39,859 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-13 13:41:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:41:40,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:40,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:41:40,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:41:40,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:41:40,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:41:40,837 INFO L87 Difference]: Start difference. First operand 5307 states and 45543 transitions. Second operand 32 states. [2018-10-13 13:41:41,908 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-10-13 13:41:42,064 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-13 13:41:42,379 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-10-13 13:41:42,519 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2018-10-13 13:41:42,791 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-13 13:41:43,040 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-13 13:41:43,256 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2018-10-13 13:41:44,058 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-13 13:41:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:44,316 INFO L93 Difference]: Finished difference Result 7447 states and 62439 transitions. [2018-10-13 13:41:44,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:41:44,316 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 44 [2018-10-13 13:41:44,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:44,342 INFO L225 Difference]: With dead ends: 7447 [2018-10-13 13:41:44,342 INFO L226 Difference]: Without dead ends: 7447 [2018-10-13 13:41:44,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=591, Invalid=1859, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:41:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2018-10-13 13:41:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 5453. [2018-10-13 13:41:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2018-10-13 13:41:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 46857 transitions. [2018-10-13 13:41:44,490 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 46857 transitions. Word has length 44 [2018-10-13 13:41:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:44,490 INFO L481 AbstractCegarLoop]: Abstraction has 5453 states and 46857 transitions. [2018-10-13 13:41:44,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:41:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 46857 transitions. [2018-10-13 13:41:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:44,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:44,499 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] [2018-10-13 13:41:44,499 INFO L424 AbstractCegarLoop]: === Iteration 128 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:44,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash 512864005, now seen corresponding path program 1 times [2018-10-13 13:41:44,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:41:45,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:45,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:41:45,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:41:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:41:45,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:41:45,371 INFO L87 Difference]: Start difference. First operand 5453 states and 46857 transitions. Second operand 31 states. [2018-10-13 13:41:46,456 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-10-13 13:41:46,685 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-13 13:41:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:47,508 INFO L93 Difference]: Finished difference Result 6765 states and 57453 transitions. [2018-10-13 13:41:47,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:41:47,509 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 44 [2018-10-13 13:41:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:47,532 INFO L225 Difference]: With dead ends: 6765 [2018-10-13 13:41:47,532 INFO L226 Difference]: Without dead ends: 6765 [2018-10-13 13:41:47,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=498, Invalid=1572, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:41:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2018-10-13 13:41:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 5671. [2018-10-13 13:41:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2018-10-13 13:41:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 48819 transitions. [2018-10-13 13:41:47,846 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 48819 transitions. Word has length 44 [2018-10-13 13:41:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:47,846 INFO L481 AbstractCegarLoop]: Abstraction has 5671 states and 48819 transitions. [2018-10-13 13:41:47,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:41:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 48819 transitions. [2018-10-13 13:41:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:47,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:47,855 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] [2018-10-13 13:41:47,855 INFO L424 AbstractCegarLoop]: === Iteration 129 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:47,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:47,856 INFO L82 PathProgramCache]: Analyzing trace with hash 741897213, now seen corresponding path program 1 times [2018-10-13 13:41:47,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:41:49,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:49,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:41:49,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:41:49,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:41:49,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:41:49,460 INFO L87 Difference]: Start difference. First operand 5671 states and 48819 transitions. Second operand 31 states. [2018-10-13 13:41:50,872 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-13 13:41:51,117 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2018-10-13 13:41:51,271 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2018-10-13 13:41:51,423 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2018-10-13 13:41:52,274 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-10-13 13:41:52,418 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2018-10-13 13:41:52,569 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-13 13:41:53,583 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-10-13 13:41:54,054 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-13 13:41:54,186 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2018-10-13 13:41:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:41:54,685 INFO L93 Difference]: Finished difference Result 12982 states and 109466 transitions. [2018-10-13 13:41:54,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-13 13:41:54,686 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 44 [2018-10-13 13:41:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:41:54,733 INFO L225 Difference]: With dead ends: 12982 [2018-10-13 13:41:54,733 INFO L226 Difference]: Without dead ends: 12982 [2018-10-13 13:41:54,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1046, Invalid=2376, Unknown=0, NotChecked=0, Total=3422 [2018-10-13 13:41:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2018-10-13 13:41:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 10825. [2018-10-13 13:41:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10825 states. [2018-10-13 13:41:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10825 states to 10825 states and 95205 transitions. [2018-10-13 13:41:55,004 INFO L78 Accepts]: Start accepts. Automaton has 10825 states and 95205 transitions. Word has length 44 [2018-10-13 13:41:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:41:55,004 INFO L481 AbstractCegarLoop]: Abstraction has 10825 states and 95205 transitions. [2018-10-13 13:41:55,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:41:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10825 states and 95205 transitions. [2018-10-13 13:41:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:41:55,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:41:55,017 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] [2018-10-13 13:41:55,017 INFO L424 AbstractCegarLoop]: === Iteration 130 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:41:55,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:41:55,017 INFO L82 PathProgramCache]: Analyzing trace with hash -321889198, now seen corresponding path program 1 times [2018-10-13 13:41:55,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:41:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:41:55,337 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:41:55,845 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2018-10-13 13:41:56,019 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 40 [2018-10-13 13:41:56,236 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 49 [2018-10-13 13:41:56,396 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 46 [2018-10-13 13:41:56,576 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 51 [2018-10-13 13:41:56,814 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 48 [2018-10-13 13:41:56,975 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2018-10-13 13:41:57,128 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2018-10-13 13:41:57,275 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2018-10-13 13:41:57,422 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2018-10-13 13:41:57,561 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2018-10-13 13:41:57,866 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 13:41:57,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:41:57,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:41:57,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:41:57,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:41:57,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:41:57,867 INFO L87 Difference]: Start difference. First operand 10825 states and 95205 transitions. Second operand 29 states. [2018-10-13 13:41:58,400 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-13 13:41:58,749 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-10-13 13:41:59,174 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-13 13:41:59,339 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-13 13:41:59,472 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-13 13:41:59,663 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2018-10-13 13:42:00,188 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2018-10-13 13:42:00,450 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-10-13 13:42:00,935 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-13 13:42:01,127 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2018-10-13 13:42:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:01,624 INFO L93 Difference]: Finished difference Result 11694 states and 100050 transitions. [2018-10-13 13:42:01,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:42:01,625 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-13 13:42:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:01,667 INFO L225 Difference]: With dead ends: 11694 [2018-10-13 13:42:01,667 INFO L226 Difference]: Without dead ends: 11694 [2018-10-13 13:42:01,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:42:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11694 states. [2018-10-13 13:42:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11694 to 10889. [2018-10-13 13:42:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10889 states. [2018-10-13 13:42:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10889 states to 10889 states and 95781 transitions. [2018-10-13 13:42:01,929 INFO L78 Accepts]: Start accepts. Automaton has 10889 states and 95781 transitions. Word has length 44 [2018-10-13 13:42:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:01,929 INFO L481 AbstractCegarLoop]: Abstraction has 10889 states and 95781 transitions. [2018-10-13 13:42:01,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:42:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10889 states and 95781 transitions. [2018-10-13 13:42:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:01,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:01,942 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] [2018-10-13 13:42:01,942 INFO L424 AbstractCegarLoop]: === Iteration 131 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:01,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:01,942 INFO L82 PathProgramCache]: Analyzing trace with hash -991312643, now seen corresponding path program 1 times [2018-10-13 13:42:01,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:42:03,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:03,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:42:03,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:42:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:42:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:42:03,331 INFO L87 Difference]: Start difference. First operand 10889 states and 95781 transitions. Second operand 30 states. [2018-10-13 13:42:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:04,961 INFO L93 Difference]: Finished difference Result 12915 states and 112885 transitions. [2018-10-13 13:42:04,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:42:04,962 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2018-10-13 13:42:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:05,006 INFO L225 Difference]: With dead ends: 12915 [2018-10-13 13:42:05,006 INFO L226 Difference]: Without dead ends: 12915 [2018-10-13 13:42:05,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=463, Invalid=1517, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:42:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12915 states. [2018-10-13 13:42:05,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12915 to 10925. [2018-10-13 13:42:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10925 states. [2018-10-13 13:42:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10925 states to 10925 states and 96105 transitions. [2018-10-13 13:42:05,247 INFO L78 Accepts]: Start accepts. Automaton has 10925 states and 96105 transitions. Word has length 44 [2018-10-13 13:42:05,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:05,247 INFO L481 AbstractCegarLoop]: Abstraction has 10925 states and 96105 transitions. [2018-10-13 13:42:05,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:42:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10925 states and 96105 transitions. [2018-10-13 13:42:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:05,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:05,258 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] [2018-10-13 13:42:05,258 INFO L424 AbstractCegarLoop]: === Iteration 132 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:05,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:05,258 INFO L82 PathProgramCache]: Analyzing trace with hash 735691594, now seen corresponding path program 1 times [2018-10-13 13:42:05,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:06,343 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 13:42:06,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:06,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:42:06,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:42:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:42:06,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:42:06,344 INFO L87 Difference]: Start difference. First operand 10925 states and 96105 transitions. Second operand 27 states. [2018-10-13 13:42:07,403 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-13 13:42:07,625 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-13 13:42:07,762 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-13 13:42:08,008 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-13 13:42:08,438 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-13 13:42:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:08,962 INFO L93 Difference]: Finished difference Result 11749 states and 102178 transitions. [2018-10-13 13:42:08,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:42:08,962 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-13 13:42:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:09,011 INFO L225 Difference]: With dead ends: 11749 [2018-10-13 13:42:09,011 INFO L226 Difference]: Without dead ends: 11749 [2018-10-13 13:42:09,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:42:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11749 states. [2018-10-13 13:42:09,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11749 to 11309. [2018-10-13 13:42:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11309 states. [2018-10-13 13:42:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11309 states to 11309 states and 99561 transitions. [2018-10-13 13:42:09,278 INFO L78 Accepts]: Start accepts. Automaton has 11309 states and 99561 transitions. Word has length 44 [2018-10-13 13:42:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:09,279 INFO L481 AbstractCegarLoop]: Abstraction has 11309 states and 99561 transitions. [2018-10-13 13:42:09,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:42:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11309 states and 99561 transitions. [2018-10-13 13:42:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:09,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:09,292 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] [2018-10-13 13:42:09,292 INFO L424 AbstractCegarLoop]: === Iteration 133 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:09,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1793272386, now seen corresponding path program 1 times [2018-10-13 13:42:09,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:10,642 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 13:42:10,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:10,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-13 13:42:10,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:42:10,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:42:10,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:42:10,643 INFO L87 Difference]: Start difference. First operand 11309 states and 99561 transitions. Second operand 24 states. [2018-10-13 13:42:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:11,861 INFO L93 Difference]: Finished difference Result 11496 states and 100069 transitions. [2018-10-13 13:42:11,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:42:11,861 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-10-13 13:42:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:11,915 INFO L225 Difference]: With dead ends: 11496 [2018-10-13 13:42:11,915 INFO L226 Difference]: Without dead ends: 11496 [2018-10-13 13:42:11,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=283, Invalid=907, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:42:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11496 states. [2018-10-13 13:42:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11496 to 11315. [2018-10-13 13:42:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2018-10-13 13:42:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 99615 transitions. [2018-10-13 13:42:12,189 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 99615 transitions. Word has length 44 [2018-10-13 13:42:12,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:12,190 INFO L481 AbstractCegarLoop]: Abstraction has 11315 states and 99615 transitions. [2018-10-13 13:42:12,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:42:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 99615 transitions. [2018-10-13 13:42:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:12,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:12,203 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 13:42:12,203 INFO L424 AbstractCegarLoop]: === Iteration 134 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:12,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash -979526053, now seen corresponding path program 1 times [2018-10-13 13:42:12,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:12,649 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 13:42:12,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:12,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-13 13:42:12,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-13 13:42:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-13 13:42:12,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-10-13 13:42:12,650 INFO L87 Difference]: Start difference. First operand 11315 states and 99615 transitions. Second operand 19 states. [2018-10-13 13:42:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:13,578 INFO L93 Difference]: Finished difference Result 11484 states and 100438 transitions. [2018-10-13 13:42:13,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-13 13:42:13,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2018-10-13 13:42:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:13,621 INFO L225 Difference]: With dead ends: 11484 [2018-10-13 13:42:13,621 INFO L226 Difference]: Without dead ends: 11484 [2018-10-13 13:42:13,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:42:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11484 states. [2018-10-13 13:42:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11484 to 11349. [2018-10-13 13:42:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11349 states. [2018-10-13 13:42:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11349 states to 11349 states and 99982 transitions. [2018-10-13 13:42:13,887 INFO L78 Accepts]: Start accepts. Automaton has 11349 states and 99982 transitions. Word has length 44 [2018-10-13 13:42:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:13,887 INFO L481 AbstractCegarLoop]: Abstraction has 11349 states and 99982 transitions. [2018-10-13 13:42:13,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-13 13:42:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11349 states and 99982 transitions. [2018-10-13 13:42:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:13,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:13,900 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] [2018-10-13 13:42:13,900 INFO L424 AbstractCegarLoop]: === Iteration 135 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:13,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:13,901 INFO L82 PathProgramCache]: Analyzing trace with hash 620911801, now seen corresponding path program 1 times [2018-10-13 13:42:13,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:14,290 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 13:42:14,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:42:14,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-10-13 13:42:14,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-13 13:42:14,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-13 13:42:14,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-13 13:42:14,291 INFO L87 Difference]: Start difference. First operand 11349 states and 99982 transitions. Second operand 20 states. [2018-10-13 13:42:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:15,086 INFO L93 Difference]: Finished difference Result 11534 states and 100936 transitions. [2018-10-13 13:42:15,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-13 13:42:15,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2018-10-13 13:42:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:15,126 INFO L225 Difference]: With dead ends: 11534 [2018-10-13 13:42:15,126 INFO L226 Difference]: Without dead ends: 11534 [2018-10-13 13:42:15,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:42:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2018-10-13 13:42:15,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 11409. [2018-10-13 13:42:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11409 states. [2018-10-13 13:42:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11409 states to 11409 states and 100521 transitions. [2018-10-13 13:42:15,395 INFO L78 Accepts]: Start accepts. Automaton has 11409 states and 100521 transitions. Word has length 44 [2018-10-13 13:42:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:15,396 INFO L481 AbstractCegarLoop]: Abstraction has 11409 states and 100521 transitions. [2018-10-13 13:42:15,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-13 13:42:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 11409 states and 100521 transitions. [2018-10-13 13:42:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:15,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:15,409 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] [2018-10-13 13:42:15,409 INFO L424 AbstractCegarLoop]: === Iteration 136 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:15,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:15,409 INFO L82 PathProgramCache]: Analyzing trace with hash 285428051, now seen corresponding path program 1 times [2018-10-13 13:42:15,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-13 13:42:16,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:16,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:42:16,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:42:16,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:42:16,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:42:16,637 INFO L87 Difference]: Start difference. First operand 11409 states and 100521 transitions. Second operand 30 states. [2018-10-13 13:42:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:18,981 INFO L93 Difference]: Finished difference Result 14099 states and 122366 transitions. [2018-10-13 13:42:18,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:42:18,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2018-10-13 13:42:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:19,034 INFO L225 Difference]: With dead ends: 14099 [2018-10-13 13:42:19,034 INFO L226 Difference]: Without dead ends: 14099 [2018-10-13 13:42:19,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=489, Invalid=1581, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:42:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14099 states. [2018-10-13 13:42:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14099 to 13579. [2018-10-13 13:42:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13579 states. [2018-10-13 13:42:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13579 states to 13579 states and 120051 transitions. [2018-10-13 13:42:19,729 INFO L78 Accepts]: Start accepts. Automaton has 13579 states and 120051 transitions. Word has length 44 [2018-10-13 13:42:19,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:19,730 INFO L481 AbstractCegarLoop]: Abstraction has 13579 states and 120051 transitions. [2018-10-13 13:42:19,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:42:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 13579 states and 120051 transitions. [2018-10-13 13:42:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:19,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:19,745 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] [2018-10-13 13:42:19,745 INFO L424 AbstractCegarLoop]: === Iteration 137 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:19,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:19,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1809007796, now seen corresponding path program 1 times [2018-10-13 13:42:19,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:42:21,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:42:21,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-13 13:42:21,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:42:21,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:42:21,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:42:21,340 INFO L87 Difference]: Start difference. First operand 13579 states and 120051 transitions. Second operand 29 states. [2018-10-13 13:42:22,294 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2018-10-13 13:42:22,652 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-13 13:42:22,790 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-13 13:42:23,182 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-13 13:42:23,488 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-13 13:42:23,947 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-13 13:42:24,098 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-13 13:42:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:24,482 INFO L93 Difference]: Finished difference Result 14826 states and 128558 transitions. [2018-10-13 13:42:24,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:42:24,483 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-13 13:42:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:24,539 INFO L225 Difference]: With dead ends: 14826 [2018-10-13 13:42:24,539 INFO L226 Difference]: Without dead ends: 14826 [2018-10-13 13:42:24,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=619, Invalid=1733, Unknown=0, NotChecked=0, Total=2352 [2018-10-13 13:42:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14826 states. [2018-10-13 13:42:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14826 to 14309. [2018-10-13 13:42:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14309 states. [2018-10-13 13:42:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14309 states to 14309 states and 126621 transitions. [2018-10-13 13:42:24,858 INFO L78 Accepts]: Start accepts. Automaton has 14309 states and 126621 transitions. Word has length 44 [2018-10-13 13:42:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:24,858 INFO L481 AbstractCegarLoop]: Abstraction has 14309 states and 126621 transitions. [2018-10-13 13:42:24,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:42:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 14309 states and 126621 transitions. [2018-10-13 13:42:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:24,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:24,872 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] [2018-10-13 13:42:24,872 INFO L424 AbstractCegarLoop]: === Iteration 138 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:24,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash 306153788, now seen corresponding path program 1 times [2018-10-13 13:42:24,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:25,680 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2018-10-13 13:42:25,880 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2018-10-13 13:42:26,189 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 31 [2018-10-13 13:42:26,558 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 20 [2018-10-13 13:42:26,689 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 25 [2018-10-13 13:42:26,889 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 13:42:26,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:26,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-13 13:42:26,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:42:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:42:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:42:26,890 INFO L87 Difference]: Start difference. First operand 14309 states and 126621 transitions. Second operand 25 states. [2018-10-13 13:42:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:29,521 INFO L93 Difference]: Finished difference Result 15085 states and 130255 transitions. [2018-10-13 13:42:29,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:42:29,521 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 44 [2018-10-13 13:42:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:29,578 INFO L225 Difference]: With dead ends: 15085 [2018-10-13 13:42:29,578 INFO L226 Difference]: Without dead ends: 15085 [2018-10-13 13:42:29,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=530, Invalid=1276, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:42:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15085 states. [2018-10-13 13:42:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15085 to 14313. [2018-10-13 13:42:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14313 states. [2018-10-13 13:42:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 126657 transitions. [2018-10-13 13:42:29,926 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 126657 transitions. Word has length 44 [2018-10-13 13:42:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:29,926 INFO L481 AbstractCegarLoop]: Abstraction has 14313 states and 126657 transitions. [2018-10-13 13:42:29,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:42:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 126657 transitions. [2018-10-13 13:42:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:29,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:29,942 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] [2018-10-13 13:42:29,942 INFO L424 AbstractCegarLoop]: === Iteration 139 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:29,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:29,943 INFO L82 PathProgramCache]: Analyzing trace with hash 241509660, now seen corresponding path program 1 times [2018-10-13 13:42:29,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:30,725 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-13 13:42:30,905 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2018-10-13 13:42:31,761 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2018-10-13 13:42:32,093 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 13:42:32,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:32,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:42:32,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:42:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:42:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:42:32,094 INFO L87 Difference]: Start difference. First operand 14313 states and 126657 transitions. Second operand 29 states. [2018-10-13 13:42:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:33,489 INFO L93 Difference]: Finished difference Result 14563 states and 127537 transitions. [2018-10-13 13:42:33,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:42:33,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-13 13:42:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:33,544 INFO L225 Difference]: With dead ends: 14563 [2018-10-13 13:42:33,545 INFO L226 Difference]: Without dead ends: 14563 [2018-10-13 13:42:33,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=359, Invalid=1201, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 13:42:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14563 states. [2018-10-13 13:42:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14563 to 14337. [2018-10-13 13:42:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14337 states. [2018-10-13 13:42:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14337 states to 14337 states and 126873 transitions. [2018-10-13 13:42:33,891 INFO L78 Accepts]: Start accepts. Automaton has 14337 states and 126873 transitions. Word has length 44 [2018-10-13 13:42:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:33,891 INFO L481 AbstractCegarLoop]: Abstraction has 14337 states and 126873 transitions. [2018-10-13 13:42:33,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:42:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14337 states and 126873 transitions. [2018-10-13 13:42:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:33,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:33,907 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] [2018-10-13 13:42:33,907 INFO L424 AbstractCegarLoop]: === Iteration 140 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:33,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash 556954823, now seen corresponding path program 1 times [2018-10-13 13:42:33,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:34,753 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2018-10-13 13:42:34,886 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-13 13:42:35,021 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2018-10-13 13:42:35,153 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-13 13:42:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-13 13:42:36,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:36,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:42:36,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:42:36,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:42:36,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:42:36,111 INFO L87 Difference]: Start difference. First operand 14337 states and 126873 transitions. Second operand 31 states. [2018-10-13 13:42:36,990 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2018-10-13 13:42:37,168 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-13 13:42:37,518 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-13 13:42:37,747 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-13 13:42:38,010 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-13 13:42:38,272 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2018-10-13 13:42:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:39,084 INFO L93 Difference]: Finished difference Result 16067 states and 139644 transitions. [2018-10-13 13:42:39,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:42:39,085 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 44 [2018-10-13 13:42:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:39,146 INFO L225 Difference]: With dead ends: 16067 [2018-10-13 13:42:39,146 INFO L226 Difference]: Without dead ends: 16067 [2018-10-13 13:42:39,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=517, Invalid=1739, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:42:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16067 states. [2018-10-13 13:42:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 14539. [2018-10-13 13:42:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14539 states. [2018-10-13 13:42:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14539 states to 14539 states and 128691 transitions. [2018-10-13 13:42:39,511 INFO L78 Accepts]: Start accepts. Automaton has 14539 states and 128691 transitions. Word has length 44 [2018-10-13 13:42:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:39,512 INFO L481 AbstractCegarLoop]: Abstraction has 14539 states and 128691 transitions. [2018-10-13 13:42:39,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:42:39,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14539 states and 128691 transitions. [2018-10-13 13:42:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:39,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:39,529 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] [2018-10-13 13:42:39,529 INFO L424 AbstractCegarLoop]: === Iteration 141 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:39,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1537481024, now seen corresponding path program 1 times [2018-10-13 13:42:39,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:40,161 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-13 13:42:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:42:41,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:42:41,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2018-10-13 13:42:41,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:42:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:42:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:42:41,690 INFO L87 Difference]: Start difference. First operand 14539 states and 128691 transitions. Second operand 30 states. [2018-10-13 13:42:42,410 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2018-10-13 13:42:42,609 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-13 13:42:42,830 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-13 13:42:43,058 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2018-10-13 13:42:43,415 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 60 [2018-10-13 13:42:43,815 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2018-10-13 13:42:44,082 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2018-10-13 13:42:44,411 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 64 [2018-10-13 13:42:44,710 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2018-10-13 13:42:45,004 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-13 13:42:45,494 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-13 13:42:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:46,468 INFO L93 Difference]: Finished difference Result 15202 states and 131970 transitions. [2018-10-13 13:42:46,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:42:46,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2018-10-13 13:42:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:46,526 INFO L225 Difference]: With dead ends: 15202 [2018-10-13 13:42:46,526 INFO L226 Difference]: Without dead ends: 15202 [2018-10-13 13:42:46,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:42:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15202 states. [2018-10-13 13:42:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15202 to 14565. [2018-10-13 13:42:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14565 states. [2018-10-13 13:42:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14565 states to 14565 states and 128925 transitions. [2018-10-13 13:42:46,884 INFO L78 Accepts]: Start accepts. Automaton has 14565 states and 128925 transitions. Word has length 44 [2018-10-13 13:42:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:46,884 INFO L481 AbstractCegarLoop]: Abstraction has 14565 states and 128925 transitions. [2018-10-13 13:42:46,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:42:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 14565 states and 128925 transitions. [2018-10-13 13:42:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:46,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:46,901 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] [2018-10-13 13:42:46,901 INFO L424 AbstractCegarLoop]: === Iteration 142 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:46,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:46,901 INFO L82 PathProgramCache]: Analyzing trace with hash -889963523, now seen corresponding path program 2 times [2018-10-13 13:42:46,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:47,637 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2018-10-13 13:42:47,781 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2018-10-13 13:42:47,940 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2018-10-13 13:42:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:42:48,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:42:48,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:42:48,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:42:48,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:42:48,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:42:48,640 INFO L87 Difference]: Start difference. First operand 14565 states and 128925 transitions. Second operand 31 states. [2018-10-13 13:42:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:50,031 INFO L93 Difference]: Finished difference Result 18412 states and 162298 transitions. [2018-10-13 13:42:50,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:42:50,032 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 44 [2018-10-13 13:42:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:50,104 INFO L225 Difference]: With dead ends: 18412 [2018-10-13 13:42:50,104 INFO L226 Difference]: Without dead ends: 18412 [2018-10-13 13:42:50,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=452, Invalid=1528, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:42:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18412 states. [2018-10-13 13:42:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18412 to 16941. [2018-10-13 13:42:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16941 states. [2018-10-13 13:42:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16941 states to 16941 states and 150309 transitions. [2018-10-13 13:42:50,525 INFO L78 Accepts]: Start accepts. Automaton has 16941 states and 150309 transitions. Word has length 44 [2018-10-13 13:42:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:50,525 INFO L481 AbstractCegarLoop]: Abstraction has 16941 states and 150309 transitions. [2018-10-13 13:42:50,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:42:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 16941 states and 150309 transitions. [2018-10-13 13:42:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:50,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:50,544 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] [2018-10-13 13:42:50,544 INFO L424 AbstractCegarLoop]: === Iteration 143 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:50,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash -479900232, now seen corresponding path program 1 times [2018-10-13 13:42:50,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:42:52,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:42:52,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-13 13:42:52,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:42:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:42:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:42:52,260 INFO L87 Difference]: Start difference. First operand 16941 states and 150309 transitions. Second operand 29 states. [2018-10-13 13:42:53,783 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-13 13:42:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:54,470 INFO L93 Difference]: Finished difference Result 17290 states and 151511 transitions. [2018-10-13 13:42:54,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:42:54,471 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-13 13:42:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:54,537 INFO L225 Difference]: With dead ends: 17290 [2018-10-13 13:42:54,537 INFO L226 Difference]: Without dead ends: 17290 [2018-10-13 13:42:54,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=389, Invalid=1333, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:42:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17290 states. [2018-10-13 13:42:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17290 to 16953. [2018-10-13 13:42:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16953 states. [2018-10-13 13:42:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16953 states to 16953 states and 150417 transitions. [2018-10-13 13:42:54,922 INFO L78 Accepts]: Start accepts. Automaton has 16953 states and 150417 transitions. Word has length 44 [2018-10-13 13:42:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:54,922 INFO L481 AbstractCegarLoop]: Abstraction has 16953 states and 150417 transitions. [2018-10-13 13:42:54,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:42:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 16953 states and 150417 transitions. [2018-10-13 13:42:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:54,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:54,938 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 13:42:54,938 INFO L424 AbstractCegarLoop]: === Iteration 144 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:54,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:54,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1042268625, now seen corresponding path program 1 times [2018-10-13 13:42:54,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:42:56,676 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-13 13:42:56,732 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 13:42:56,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:42:56,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-13 13:42:56,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:42:56,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:42:56,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:42:56,733 INFO L87 Difference]: Start difference. First operand 16953 states and 150417 transitions. Second operand 27 states. [2018-10-13 13:42:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:42:59,117 INFO L93 Difference]: Finished difference Result 18326 states and 160841 transitions. [2018-10-13 13:42:59,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:42:59,117 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-13 13:42:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:42:59,189 INFO L225 Difference]: With dead ends: 18326 [2018-10-13 13:42:59,189 INFO L226 Difference]: Without dead ends: 18326 [2018-10-13 13:42:59,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=478, Invalid=1328, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:42:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2018-10-13 13:42:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 18027. [2018-10-13 13:42:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18027 states. [2018-10-13 13:42:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 160036 transitions. [2018-10-13 13:42:59,628 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 160036 transitions. Word has length 44 [2018-10-13 13:42:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:42:59,628 INFO L481 AbstractCegarLoop]: Abstraction has 18027 states and 160036 transitions. [2018-10-13 13:42:59,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:42:59,628 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 160036 transitions. [2018-10-13 13:42:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:42:59,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:42:59,649 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] [2018-10-13 13:42:59,649 INFO L424 AbstractCegarLoop]: === Iteration 145 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:42:59,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:42:59,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1265954252, now seen corresponding path program 1 times [2018-10-13 13:42:59,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:42:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:43:01,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:01,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-13 13:43:01,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:43:01,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:43:01,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:43:01,152 INFO L87 Difference]: Start difference. First operand 18027 states and 160036 transitions. Second operand 27 states. [2018-10-13 13:43:01,822 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2018-10-13 13:43:02,077 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2018-10-13 13:43:02,348 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2018-10-13 13:43:02,562 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2018-10-13 13:43:02,760 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-10-13 13:43:02,945 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2018-10-13 13:43:03,301 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-13 13:43:03,690 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2018-10-13 13:43:04,240 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-13 13:43:04,473 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-13 13:43:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:04,899 INFO L93 Difference]: Finished difference Result 18858 states and 164748 transitions. [2018-10-13 13:43:04,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:43:04,900 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-13 13:43:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:04,972 INFO L225 Difference]: With dead ends: 18858 [2018-10-13 13:43:04,973 INFO L226 Difference]: Without dead ends: 18858 [2018-10-13 13:43:04,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=548, Invalid=1432, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:43:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18858 states. [2018-10-13 13:43:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18858 to 18331. [2018-10-13 13:43:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18331 states. [2018-10-13 13:43:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 162772 transitions. [2018-10-13 13:43:05,431 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 162772 transitions. Word has length 44 [2018-10-13 13:43:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:05,432 INFO L481 AbstractCegarLoop]: Abstraction has 18331 states and 162772 transitions. [2018-10-13 13:43:05,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:43:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 162772 transitions. [2018-10-13 13:43:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:43:05,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:05,453 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] [2018-10-13 13:43:05,453 INFO L424 AbstractCegarLoop]: === Iteration 146 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:05,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:05,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1330598380, now seen corresponding path program 1 times [2018-10-13 13:43:05,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:06,783 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 13:43:06,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:43:06,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:43:06,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:43:06,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:43:06,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:43:06,784 INFO L87 Difference]: Start difference. First operand 18331 states and 162772 transitions. Second operand 26 states. [2018-10-13 13:43:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:08,337 INFO L93 Difference]: Finished difference Result 18552 states and 163446 transitions. [2018-10-13 13:43:08,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:43:08,337 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2018-10-13 13:43:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:08,409 INFO L225 Difference]: With dead ends: 18552 [2018-10-13 13:43:08,409 INFO L226 Difference]: Without dead ends: 18552 [2018-10-13 13:43:08,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=338, Invalid=1068, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:43:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18552 states. [2018-10-13 13:43:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18552 to 18343. [2018-10-13 13:43:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18343 states. [2018-10-13 13:43:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18343 states to 18343 states and 162880 transitions. [2018-10-13 13:43:08,911 INFO L78 Accepts]: Start accepts. Automaton has 18343 states and 162880 transitions. Word has length 44 [2018-10-13 13:43:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:08,911 INFO L481 AbstractCegarLoop]: Abstraction has 18343 states and 162880 transitions. [2018-10-13 13:43:08,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:43:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 18343 states and 162880 transitions. [2018-10-13 13:43:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:43:08,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:08,932 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] [2018-10-13 13:43:08,932 INFO L424 AbstractCegarLoop]: === Iteration 147 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:08,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2052008272, now seen corresponding path program 1 times [2018-10-13 13:43:08,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:10,298 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-10-13 13:43:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:43:10,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:10,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-13 13:43:10,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:43:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:43:10,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:43:10,700 INFO L87 Difference]: Start difference. First operand 18343 states and 162880 transitions. Second operand 27 states. [2018-10-13 13:43:11,342 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2018-10-13 13:43:11,549 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2018-10-13 13:43:11,841 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-10-13 13:43:12,006 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-13 13:43:12,246 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2018-10-13 13:43:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:13,120 INFO L93 Difference]: Finished difference Result 19225 states and 168985 transitions. [2018-10-13 13:43:13,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:43:13,121 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-13 13:43:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:13,195 INFO L225 Difference]: With dead ends: 19225 [2018-10-13 13:43:13,196 INFO L226 Difference]: Without dead ends: 19225 [2018-10-13 13:43:13,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2018-10-13 13:43:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19225 states. [2018-10-13 13:43:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19225 to 18603. [2018-10-13 13:43:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18603 states. [2018-10-13 13:43:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18603 states to 18603 states and 165220 transitions. [2018-10-13 13:43:13,656 INFO L78 Accepts]: Start accepts. Automaton has 18603 states and 165220 transitions. Word has length 44 [2018-10-13 13:43:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:13,656 INFO L481 AbstractCegarLoop]: Abstraction has 18603 states and 165220 transitions. [2018-10-13 13:43:13,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:43:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 18603 states and 165220 transitions. [2018-10-13 13:43:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:43:13,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:13,678 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 13:43:13,678 INFO L424 AbstractCegarLoop]: === Iteration 148 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:13,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:13,678 INFO L82 PathProgramCache]: Analyzing trace with hash -529839415, now seen corresponding path program 1 times [2018-10-13 13:43:13,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:14,391 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 13:43:14,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:14,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-13 13:43:14,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:43:14,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:43:14,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:43:14,392 INFO L87 Difference]: Start difference. First operand 18603 states and 165220 transitions. Second operand 24 states. [2018-10-13 13:43:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:16,390 INFO L93 Difference]: Finished difference Result 18966 states and 166960 transitions. [2018-10-13 13:43:16,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:43:16,390 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-10-13 13:43:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:16,464 INFO L225 Difference]: With dead ends: 18966 [2018-10-13 13:43:16,464 INFO L226 Difference]: Without dead ends: 18966 [2018-10-13 13:43:16,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2018-10-13 13:43:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18966 states. [2018-10-13 13:43:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18966 to 18661. [2018-10-13 13:43:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18661 states. [2018-10-13 13:43:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18661 states to 18661 states and 165742 transitions. [2018-10-13 13:43:16,925 INFO L78 Accepts]: Start accepts. Automaton has 18661 states and 165742 transitions. Word has length 44 [2018-10-13 13:43:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:16,925 INFO L481 AbstractCegarLoop]: Abstraction has 18661 states and 165742 transitions. [2018-10-13 13:43:16,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:43:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 18661 states and 165742 transitions. [2018-10-13 13:43:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:43:16,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:16,947 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 13:43:16,947 INFO L424 AbstractCegarLoop]: === Iteration 149 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:16,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:16,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2101947455, now seen corresponding path program 1 times [2018-10-13 13:43:16,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:17,718 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 13:43:17,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:17,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-13 13:43:17,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-13 13:43:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-13 13:43:17,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-10-13 13:43:17,719 INFO L87 Difference]: Start difference. First operand 18661 states and 165742 transitions. Second operand 22 states. [2018-10-13 13:43:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:19,917 INFO L93 Difference]: Finished difference Result 19245 states and 168734 transitions. [2018-10-13 13:43:19,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:43:19,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2018-10-13 13:43:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:19,993 INFO L225 Difference]: With dead ends: 19245 [2018-10-13 13:43:19,993 INFO L226 Difference]: Without dead ends: 19245 [2018-10-13 13:43:19,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=397, Invalid=1009, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:43:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19245 states. [2018-10-13 13:43:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19245 to 18801. [2018-10-13 13:43:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18801 states. [2018-10-13 13:43:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18801 states to 18801 states and 167002 transitions. [2018-10-13 13:43:20,459 INFO L78 Accepts]: Start accepts. Automaton has 18801 states and 167002 transitions. Word has length 44 [2018-10-13 13:43:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:20,459 INFO L481 AbstractCegarLoop]: Abstraction has 18801 states and 167002 transitions. [2018-10-13 13:43:20,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-13 13:43:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18801 states and 167002 transitions. [2018-10-13 13:43:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:43:20,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:20,482 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] [2018-10-13 13:43:20,482 INFO L424 AbstractCegarLoop]: === Iteration 150 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:20,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1353660164, now seen corresponding path program 1 times [2018-10-13 13:43:20,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:20,988 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 13:43:20,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:43:20,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-13 13:43:20,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-13 13:43:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-13 13:43:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2018-10-13 13:43:20,989 INFO L87 Difference]: Start difference. First operand 18801 states and 167002 transitions. Second operand 21 states. [2018-10-13 13:43:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:22,230 INFO L93 Difference]: Finished difference Result 20125 states and 177264 transitions. [2018-10-13 13:43:22,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:43:22,230 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2018-10-13 13:43:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:22,300 INFO L225 Difference]: With dead ends: 20125 [2018-10-13 13:43:22,301 INFO L226 Difference]: Without dead ends: 20125 [2018-10-13 13:43:22,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:43:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20125 states. [2018-10-13 13:43:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20125 to 19881. [2018-10-13 13:43:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19881 states. [2018-10-13 13:43:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19881 states to 19881 states and 176722 transitions. [2018-10-13 13:43:23,065 INFO L78 Accepts]: Start accepts. Automaton has 19881 states and 176722 transitions. Word has length 44 [2018-10-13 13:43:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:23,065 INFO L481 AbstractCegarLoop]: Abstraction has 19881 states and 176722 transitions. [2018-10-13 13:43:23,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-13 13:43:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19881 states and 176722 transitions. [2018-10-13 13:43:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-13 13:43:23,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:23,086 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 13:43:23,086 INFO L424 AbstractCegarLoop]: === Iteration 151 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:23,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash 413443610, now seen corresponding path program 1 times [2018-10-13 13:43:23,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:23,239 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 13:43:23,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:23,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-13 13:43:23,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-13 13:43:23,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-13 13:43:23,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-10-13 13:43:23,240 INFO L87 Difference]: Start difference. First operand 19881 states and 176722 transitions. Second operand 13 states. [2018-10-13 13:43:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:23,881 INFO L93 Difference]: Finished difference Result 20044 states and 177413 transitions. [2018-10-13 13:43:23,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-13 13:43:23,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-10-13 13:43:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:23,960 INFO L225 Difference]: With dead ends: 20044 [2018-10-13 13:43:23,960 INFO L226 Difference]: Without dead ends: 20044 [2018-10-13 13:43:23,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-10-13 13:43:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20044 states. [2018-10-13 13:43:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20044 to 19903. [2018-10-13 13:43:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19903 states. [2018-10-13 13:43:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19903 states to 19903 states and 176823 transitions. [2018-10-13 13:43:24,402 INFO L78 Accepts]: Start accepts. Automaton has 19903 states and 176823 transitions. Word has length 44 [2018-10-13 13:43:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:24,402 INFO L481 AbstractCegarLoop]: Abstraction has 19903 states and 176823 transitions. [2018-10-13 13:43:24,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-13 13:43:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19903 states and 176823 transitions. [2018-10-13 13:43:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:43:24,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:24,423 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] [2018-10-13 13:43:24,423 INFO L424 AbstractCegarLoop]: === Iteration 152 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:24,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:24,424 INFO L82 PathProgramCache]: Analyzing trace with hash 79822098, now seen corresponding path program 1 times [2018-10-13 13:43:24,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:24,962 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 13:43:24,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:43:24,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-13 13:43:24,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-13 13:43:24,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-13 13:43:24,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2018-10-13 13:43:24,963 INFO L87 Difference]: Start difference. First operand 19903 states and 176823 transitions. Second operand 21 states. [2018-10-13 13:43:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:26,092 INFO L93 Difference]: Finished difference Result 20364 states and 179716 transitions. [2018-10-13 13:43:26,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-13 13:43:26,093 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 45 [2018-10-13 13:43:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:26,172 INFO L225 Difference]: With dead ends: 20364 [2018-10-13 13:43:26,173 INFO L226 Difference]: Without dead ends: 20364 [2018-10-13 13:43:26,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:43:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20364 states. [2018-10-13 13:43:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20364 to 19896. [2018-10-13 13:43:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19896 states. [2018-10-13 13:43:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19896 states to 19896 states and 176815 transitions. [2018-10-13 13:43:26,667 INFO L78 Accepts]: Start accepts. Automaton has 19896 states and 176815 transitions. Word has length 45 [2018-10-13 13:43:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:26,667 INFO L481 AbstractCegarLoop]: Abstraction has 19896 states and 176815 transitions. [2018-10-13 13:43:26,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-13 13:43:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19896 states and 176815 transitions. [2018-10-13 13:43:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:43:26,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:26,691 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] [2018-10-13 13:43:26,691 INFO L424 AbstractCegarLoop]: === Iteration 153 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:26,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:26,691 INFO L82 PathProgramCache]: Analyzing trace with hash 759880468, now seen corresponding path program 1 times [2018-10-13 13:43:26,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:27,039 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-13 13:43:28,118 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 13:43:28,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:43:28,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-13 13:43:28,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-13 13:43:28,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-13 13:43:28,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2018-10-13 13:43:28,119 INFO L87 Difference]: Start difference. First operand 19896 states and 176815 transitions. Second operand 23 states. [2018-10-13 13:43:28,733 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-13 13:43:28,985 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-10-13 13:43:29,148 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2018-10-13 13:43:29,288 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-13 13:43:29,552 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-13 13:43:29,764 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-13 13:43:30,043 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-10-13 13:43:30,227 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-13 13:43:30,799 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2018-10-13 13:43:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:31,201 INFO L93 Difference]: Finished difference Result 20620 states and 180542 transitions. [2018-10-13 13:43:31,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:43:31,202 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2018-10-13 13:43:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:31,282 INFO L225 Difference]: With dead ends: 20620 [2018-10-13 13:43:31,283 INFO L226 Difference]: Without dead ends: 20620 [2018-10-13 13:43:31,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 13:43:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20620 states. [2018-10-13 13:43:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20620 to 19840. [2018-10-13 13:43:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19840 states. [2018-10-13 13:43:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19840 states to 19840 states and 176233 transitions. [2018-10-13 13:43:31,792 INFO L78 Accepts]: Start accepts. Automaton has 19840 states and 176233 transitions. Word has length 45 [2018-10-13 13:43:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:31,793 INFO L481 AbstractCegarLoop]: Abstraction has 19840 states and 176233 transitions. [2018-10-13 13:43:31,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-13 13:43:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 19840 states and 176233 transitions. [2018-10-13 13:43:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:43:31,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:31,816 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] [2018-10-13 13:43:31,816 INFO L424 AbstractCegarLoop]: === Iteration 154 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:31,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:31,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1781943078, now seen corresponding path program 1 times [2018-10-13 13:43:31,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:32,956 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2018-10-13 13:43:33,091 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-10-13 13:43:33,239 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2018-10-13 13:43:33,373 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2018-10-13 13:43:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:43:34,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:34,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-13 13:43:34,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:43:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:43:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:43:34,344 INFO L87 Difference]: Start difference. First operand 19840 states and 176233 transitions. Second operand 29 states. [2018-10-13 13:43:35,226 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2018-10-13 13:43:35,400 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-13 13:43:35,610 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-13 13:43:36,120 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2018-10-13 13:43:36,282 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-10-13 13:43:36,614 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-13 13:43:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:37,395 INFO L93 Difference]: Finished difference Result 20628 states and 181382 transitions. [2018-10-13 13:43:37,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:43:37,396 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2018-10-13 13:43:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:37,477 INFO L225 Difference]: With dead ends: 20628 [2018-10-13 13:43:37,477 INFO L226 Difference]: Without dead ends: 20628 [2018-10-13 13:43:37,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:43:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20628 states. [2018-10-13 13:43:37,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20628 to 19840. [2018-10-13 13:43:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19840 states. [2018-10-13 13:43:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19840 states to 19840 states and 176233 transitions. [2018-10-13 13:43:37,972 INFO L78 Accepts]: Start accepts. Automaton has 19840 states and 176233 transitions. Word has length 45 [2018-10-13 13:43:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:37,972 INFO L481 AbstractCegarLoop]: Abstraction has 19840 states and 176233 transitions. [2018-10-13 13:43:37,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:43:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 19840 states and 176233 transitions. [2018-10-13 13:43:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:43:37,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:37,996 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] [2018-10-13 13:43:37,996 INFO L424 AbstractCegarLoop]: === Iteration 155 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:37,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:37,996 INFO L82 PathProgramCache]: Analyzing trace with hash -314280825, now seen corresponding path program 1 times [2018-10-13 13:43:37,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:38,695 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-13 13:43:38,873 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2018-10-13 13:43:39,082 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2018-10-13 13:43:39,303 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 77 [2018-10-13 13:43:39,530 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 79 [2018-10-13 13:43:39,761 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 80 [2018-10-13 13:43:40,027 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 84 [2018-10-13 13:43:40,323 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 89 [2018-10-13 13:43:40,597 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 84 [2018-10-13 13:43:40,865 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 79 [2018-10-13 13:43:41,113 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 74 [2018-10-13 13:43:41,333 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2018-10-13 13:43:41,528 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-13 13:43:41,695 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 13:43:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:43:42,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:43:42,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:43:42,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:43:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:43:42,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:43:42,320 INFO L87 Difference]: Start difference. First operand 19840 states and 176233 transitions. Second operand 32 states. [2018-10-13 13:43:43,276 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-13 13:43:43,451 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-13 13:43:43,633 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-10-13 13:43:43,892 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2018-10-13 13:43:44,279 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2018-10-13 13:43:44,816 WARN L178 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2018-10-13 13:43:45,414 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2018-10-13 13:43:46,083 WARN L178 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 95 [2018-10-13 13:43:46,892 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 94 [2018-10-13 13:43:47,610 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 97 [2018-10-13 13:43:48,290 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2018-10-13 13:43:48,933 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-10-13 13:43:49,641 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2018-10-13 13:43:50,394 WARN L178 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 96 [2018-10-13 13:43:51,242 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2018-10-13 13:43:51,918 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 96 [2018-10-13 13:43:53,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:53,662 INFO L93 Difference]: Finished difference Result 21460 states and 187012 transitions. [2018-10-13 13:43:53,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 13:43:53,662 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 45 [2018-10-13 13:43:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:53,746 INFO L225 Difference]: With dead ends: 21460 [2018-10-13 13:43:53,746 INFO L226 Difference]: Without dead ends: 21460 [2018-10-13 13:43:53,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=756, Invalid=2214, Unknown=0, NotChecked=0, Total=2970 [2018-10-13 13:43:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21460 states. [2018-10-13 13:43:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21460 to 20104. [2018-10-13 13:43:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20104 states. [2018-10-13 13:43:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20104 states to 20104 states and 178609 transitions. [2018-10-13 13:43:54,787 INFO L78 Accepts]: Start accepts. Automaton has 20104 states and 178609 transitions. Word has length 45 [2018-10-13 13:43:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:54,787 INFO L481 AbstractCegarLoop]: Abstraction has 20104 states and 178609 transitions. [2018-10-13 13:43:54,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:43:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 20104 states and 178609 transitions. [2018-10-13 13:43:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:43:54,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:54,812 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] [2018-10-13 13:43:54,812 INFO L424 AbstractCegarLoop]: === Iteration 156 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:54,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021801, now seen corresponding path program 1 times [2018-10-13 13:43:54,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:43:55,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:43:55,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:43:55,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:43:55,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:43:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:43:55,898 INFO L87 Difference]: Start difference. First operand 20104 states and 178609 transitions. Second operand 28 states. [2018-10-13 13:43:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:43:57,918 INFO L93 Difference]: Finished difference Result 20594 states and 180647 transitions. [2018-10-13 13:43:57,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:43:57,918 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2018-10-13 13:43:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:43:57,999 INFO L225 Difference]: With dead ends: 20594 [2018-10-13 13:43:57,999 INFO L226 Difference]: Without dead ends: 20594 [2018-10-13 13:43:57,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=453, Invalid=1353, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:43:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20594 states. [2018-10-13 13:43:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20594 to 20051. [2018-10-13 13:43:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20051 states. [2018-10-13 13:43:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 178171 transitions. [2018-10-13 13:43:58,507 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 178171 transitions. Word has length 45 [2018-10-13 13:43:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:43:58,508 INFO L481 AbstractCegarLoop]: Abstraction has 20051 states and 178171 transitions. [2018-10-13 13:43:58,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:43:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 178171 transitions. [2018-10-13 13:43:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:43:58,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:43:58,531 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] [2018-10-13 13:43:58,532 INFO L424 AbstractCegarLoop]: === Iteration 157 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:43:58,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:43:58,532 INFO L82 PathProgramCache]: Analyzing trace with hash 938290402, now seen corresponding path program 1 times [2018-10-13 13:43:58,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:43:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:43:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:43:59,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:43:59,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-13 13:43:59,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:43:59,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:43:59,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:43:59,865 INFO L87 Difference]: Start difference. First operand 20051 states and 178171 transitions. Second operand 27 states. [2018-10-13 13:44:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:01,525 INFO L93 Difference]: Finished difference Result 20669 states and 182444 transitions. [2018-10-13 13:44:01,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:44:01,526 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 45 [2018-10-13 13:44:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:01,608 INFO L225 Difference]: With dead ends: 20669 [2018-10-13 13:44:01,608 INFO L226 Difference]: Without dead ends: 20669 [2018-10-13 13:44:01,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:44:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20669 states. [2018-10-13 13:44:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20669 to 20153. [2018-10-13 13:44:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-10-13 13:44:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 179089 transitions. [2018-10-13 13:44:02,118 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 179089 transitions. Word has length 45 [2018-10-13 13:44:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:02,119 INFO L481 AbstractCegarLoop]: Abstraction has 20153 states and 179089 transitions. [2018-10-13 13:44:02,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:44:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 179089 transitions. [2018-10-13 13:44:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:02,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:02,143 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] [2018-10-13 13:44:02,143 INFO L424 AbstractCegarLoop]: === Iteration 158 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:02,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:02,144 INFO L82 PathProgramCache]: Analyzing trace with hash -636443414, now seen corresponding path program 1 times [2018-10-13 13:44:02,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:44:02,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:44:02,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-13 13:44:02,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:44:02,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:44:02,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:44:02,691 INFO L87 Difference]: Start difference. First operand 20153 states and 179089 transitions. Second operand 25 states. [2018-10-13 13:44:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:04,561 INFO L93 Difference]: Finished difference Result 21331 states and 188102 transitions. [2018-10-13 13:44:04,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:44:04,562 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 45 [2018-10-13 13:44:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:04,646 INFO L225 Difference]: With dead ends: 21331 [2018-10-13 13:44:04,646 INFO L226 Difference]: Without dead ends: 21331 [2018-10-13 13:44:04,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=973, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 13:44:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21331 states. [2018-10-13 13:44:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21331 to 20274. [2018-10-13 13:44:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20274 states. [2018-10-13 13:44:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20274 states to 20274 states and 180139 transitions. [2018-10-13 13:44:05,114 INFO L78 Accepts]: Start accepts. Automaton has 20274 states and 180139 transitions. Word has length 45 [2018-10-13 13:44:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:05,115 INFO L481 AbstractCegarLoop]: Abstraction has 20274 states and 180139 transitions. [2018-10-13 13:44:05,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:44:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 20274 states and 180139 transitions. [2018-10-13 13:44:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:05,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:05,137 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 13:44:05,137 INFO L424 AbstractCegarLoop]: === Iteration 159 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:05,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash 666267641, now seen corresponding path program 1 times [2018-10-13 13:44:05,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:05,762 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 13:44:05,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:44:05,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-13 13:44:05,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-13 13:44:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-13 13:44:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-10-13 13:44:05,763 INFO L87 Difference]: Start difference. First operand 20274 states and 180139 transitions. Second operand 18 states. [2018-10-13 13:44:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:06,860 INFO L93 Difference]: Finished difference Result 20807 states and 183877 transitions. [2018-10-13 13:44:06,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-13 13:44:06,861 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2018-10-13 13:44:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:06,942 INFO L225 Difference]: With dead ends: 20807 [2018-10-13 13:44:06,943 INFO L226 Difference]: Without dead ends: 20807 [2018-10-13 13:44:06,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:44:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2018-10-13 13:44:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 20415. [2018-10-13 13:44:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20415 states. [2018-10-13 13:44:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20415 states to 20415 states and 181273 transitions. [2018-10-13 13:44:07,454 INFO L78 Accepts]: Start accepts. Automaton has 20415 states and 181273 transitions. Word has length 45 [2018-10-13 13:44:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:07,454 INFO L481 AbstractCegarLoop]: Abstraction has 20415 states and 181273 transitions. [2018-10-13 13:44:07,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-13 13:44:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 20415 states and 181273 transitions. [2018-10-13 13:44:07,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:07,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:07,480 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:44:07,480 INFO L424 AbstractCegarLoop]: === Iteration 160 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:07,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:07,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1223272642, now seen corresponding path program 1 times [2018-10-13 13:44:07,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:44:08,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:08,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:44:08,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:44:08,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:44:08,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:44:08,626 INFO L87 Difference]: Start difference. First operand 20415 states and 181273 transitions. Second operand 33 states. [2018-10-13 13:44:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:10,898 INFO L93 Difference]: Finished difference Result 20838 states and 184388 transitions. [2018-10-13 13:44:10,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:44:10,899 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 45 [2018-10-13 13:44:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:10,981 INFO L225 Difference]: With dead ends: 20838 [2018-10-13 13:44:10,981 INFO L226 Difference]: Without dead ends: 20838 [2018-10-13 13:44:10,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:44:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20838 states. [2018-10-13 13:44:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20838 to 20139. [2018-10-13 13:44:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20139 states. [2018-10-13 13:44:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20139 states to 20139 states and 178789 transitions. [2018-10-13 13:44:11,461 INFO L78 Accepts]: Start accepts. Automaton has 20139 states and 178789 transitions. Word has length 45 [2018-10-13 13:44:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:11,461 INFO L481 AbstractCegarLoop]: Abstraction has 20139 states and 178789 transitions. [2018-10-13 13:44:11,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:44:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 20139 states and 178789 transitions. [2018-10-13 13:44:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:11,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:11,484 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] [2018-10-13 13:44:11,484 INFO L424 AbstractCegarLoop]: === Iteration 161 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:11,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash 689462485, now seen corresponding path program 1 times [2018-10-13 13:44:11,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:44:13,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:13,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:44:13,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:44:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:44:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:44:13,038 INFO L87 Difference]: Start difference. First operand 20139 states and 178789 transitions. Second operand 31 states. [2018-10-13 13:44:14,395 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-13 13:44:15,023 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-13 13:44:15,353 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-13 13:44:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:16,277 INFO L93 Difference]: Finished difference Result 20826 states and 183478 transitions. [2018-10-13 13:44:16,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:44:16,277 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2018-10-13 13:44:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:16,356 INFO L225 Difference]: With dead ends: 20826 [2018-10-13 13:44:16,356 INFO L226 Difference]: Without dead ends: 20826 [2018-10-13 13:44:16,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=553, Invalid=1703, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:44:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20826 states. [2018-10-13 13:44:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20826 to 20639. [2018-10-13 13:44:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20639 states. [2018-10-13 13:44:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20639 states to 20639 states and 183289 transitions. [2018-10-13 13:44:16,821 INFO L78 Accepts]: Start accepts. Automaton has 20639 states and 183289 transitions. Word has length 45 [2018-10-13 13:44:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:16,821 INFO L481 AbstractCegarLoop]: Abstraction has 20639 states and 183289 transitions. [2018-10-13 13:44:16,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:44:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20639 states and 183289 transitions. [2018-10-13 13:44:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:16,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:16,848 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:44:16,848 INFO L424 AbstractCegarLoop]: === Iteration 162 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:16,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1968225214, now seen corresponding path program 1 times [2018-10-13 13:44:16,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:17,482 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-10-13 13:44:17,621 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-13 13:44:17,781 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-13 13:44:17,973 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2018-10-13 13:44:18,244 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2018-10-13 13:44:18,402 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-13 13:44:18,584 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-13 13:44:18,761 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-13 13:44:18,935 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-13 13:44:19,102 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-13 13:44:19,264 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-13 13:44:19,419 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-10-13 13:44:19,565 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-13 13:44:19,711 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2018-10-13 13:44:19,852 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2018-10-13 13:44:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:44:20,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:20,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:44:20,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:44:20,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:44:20,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:44:20,327 INFO L87 Difference]: Start difference. First operand 20639 states and 183289 transitions. Second operand 32 states. [2018-10-13 13:44:21,311 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-13 13:44:21,508 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-10-13 13:44:21,784 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-13 13:44:22,148 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-13 13:44:22,397 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-13 13:44:22,694 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-13 13:44:22,991 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-13 13:44:23,372 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2018-10-13 13:44:23,660 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-10-13 13:44:23,973 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2018-10-13 13:44:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:25,202 INFO L93 Difference]: Finished difference Result 25421 states and 223398 transitions. [2018-10-13 13:44:25,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:44:25,202 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 45 [2018-10-13 13:44:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:25,306 INFO L225 Difference]: With dead ends: 25421 [2018-10-13 13:44:25,306 INFO L226 Difference]: Without dead ends: 25421 [2018-10-13 13:44:25,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=705, Invalid=2051, Unknown=0, NotChecked=0, Total=2756 [2018-10-13 13:44:25,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25421 states. [2018-10-13 13:44:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25421 to 21053. [2018-10-13 13:44:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21053 states. [2018-10-13 13:44:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21053 states to 21053 states and 187015 transitions. [2018-10-13 13:44:25,955 INFO L78 Accepts]: Start accepts. Automaton has 21053 states and 187015 transitions. Word has length 45 [2018-10-13 13:44:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:25,956 INFO L481 AbstractCegarLoop]: Abstraction has 21053 states and 187015 transitions. [2018-10-13 13:44:25,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:44:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 21053 states and 187015 transitions. [2018-10-13 13:44:25,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:25,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:25,981 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] [2018-10-13 13:44:25,982 INFO L424 AbstractCegarLoop]: === Iteration 163 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:25,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2004619493, now seen corresponding path program 1 times [2018-10-13 13:44:25,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:27,096 WARN L178 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-13 13:44:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:44:27,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:27,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:44:27,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:44:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:44:27,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:44:27,874 INFO L87 Difference]: Start difference. First operand 21053 states and 187015 transitions. Second operand 26 states. [2018-10-13 13:44:28,636 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2018-10-13 13:44:28,823 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2018-10-13 13:44:29,129 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-10-13 13:44:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:29,689 INFO L93 Difference]: Finished difference Result 23030 states and 203540 transitions. [2018-10-13 13:44:29,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:44:29,689 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2018-10-13 13:44:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:29,782 INFO L225 Difference]: With dead ends: 23030 [2018-10-13 13:44:29,782 INFO L226 Difference]: Without dead ends: 23030 [2018-10-13 13:44:29,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:44:29,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23030 states. [2018-10-13 13:44:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23030 to 22691. [2018-10-13 13:44:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22691 states. [2018-10-13 13:44:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22691 states to 22691 states and 201757 transitions. [2018-10-13 13:44:30,354 INFO L78 Accepts]: Start accepts. Automaton has 22691 states and 201757 transitions. Word has length 45 [2018-10-13 13:44:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:30,355 INFO L481 AbstractCegarLoop]: Abstraction has 22691 states and 201757 transitions. [2018-10-13 13:44:30,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:44:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 22691 states and 201757 transitions. [2018-10-13 13:44:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:30,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:30,383 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] [2018-10-13 13:44:30,383 INFO L424 AbstractCegarLoop]: === Iteration 164 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:30,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash -907988172, now seen corresponding path program 1 times [2018-10-13 13:44:30,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:30,879 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 13:44:30,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:30,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-13 13:44:30,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-13 13:44:30,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-13 13:44:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2018-10-13 13:44:30,880 INFO L87 Difference]: Start difference. First operand 22691 states and 201757 transitions. Second operand 21 states. [2018-10-13 13:44:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:32,475 INFO L93 Difference]: Finished difference Result 23199 states and 204995 transitions. [2018-10-13 13:44:32,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:44:32,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 45 [2018-10-13 13:44:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:32,568 INFO L225 Difference]: With dead ends: 23199 [2018-10-13 13:44:32,568 INFO L226 Difference]: Without dead ends: 23199 [2018-10-13 13:44:32,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:44:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23199 states. [2018-10-13 13:44:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23199 to 22929. [2018-10-13 13:44:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22929 states. [2018-10-13 13:44:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22929 states to 22929 states and 203897 transitions. [2018-10-13 13:44:33,146 INFO L78 Accepts]: Start accepts. Automaton has 22929 states and 203897 transitions. Word has length 45 [2018-10-13 13:44:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:33,146 INFO L481 AbstractCegarLoop]: Abstraction has 22929 states and 203897 transitions. [2018-10-13 13:44:33,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-13 13:44:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22929 states and 203897 transitions. [2018-10-13 13:44:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:33,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:33,174 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:44:33,175 INFO L424 AbstractCegarLoop]: === Iteration 165 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:33,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash -215081464, now seen corresponding path program 1 times [2018-10-13 13:44:33,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:33,858 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2018-10-13 13:44:34,040 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2018-10-13 13:44:34,309 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2018-10-13 13:44:34,659 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2018-10-13 13:44:34,864 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2018-10-13 13:44:35,103 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2018-10-13 13:44:35,372 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2018-10-13 13:44:35,637 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2018-10-13 13:44:35,897 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2018-10-13 13:44:36,150 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2018-10-13 13:44:36,392 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2018-10-13 13:44:36,621 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-13 13:44:36,853 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2018-10-13 13:44:37,064 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-13 13:44:37,240 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 35 [2018-10-13 13:44:37,389 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 31 [2018-10-13 13:44:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-13 13:44:37,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:37,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:44:37,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:44:37,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:44:37,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:44:37,833 INFO L87 Difference]: Start difference. First operand 22929 states and 203897 transitions. Second operand 34 states. [2018-10-13 13:44:38,983 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2018-10-13 13:44:39,247 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2018-10-13 13:44:39,631 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2018-10-13 13:44:39,846 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2018-10-13 13:44:40,145 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-13 13:44:40,378 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2018-10-13 13:44:40,633 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2018-10-13 13:44:40,883 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2018-10-13 13:44:41,151 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2018-10-13 13:44:41,489 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2018-10-13 13:44:41,757 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2018-10-13 13:44:43,036 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2018-10-13 13:44:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:43,999 INFO L93 Difference]: Finished difference Result 43497 states and 383060 transitions. [2018-10-13 13:44:44,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-13 13:44:44,000 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 45 [2018-10-13 13:44:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:44,186 INFO L225 Difference]: With dead ends: 43497 [2018-10-13 13:44:44,186 INFO L226 Difference]: Without dead ends: 43497 [2018-10-13 13:44:44,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=775, Invalid=2305, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:44:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43497 states. [2018-10-13 13:44:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43497 to 24285. [2018-10-13 13:44:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24285 states. [2018-10-13 13:44:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24285 states to 24285 states and 216101 transitions. [2018-10-13 13:44:45,069 INFO L78 Accepts]: Start accepts. Automaton has 24285 states and 216101 transitions. Word has length 45 [2018-10-13 13:44:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:45,069 INFO L481 AbstractCegarLoop]: Abstraction has 24285 states and 216101 transitions. [2018-10-13 13:44:45,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:44:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 24285 states and 216101 transitions. [2018-10-13 13:44:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:45,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:45,107 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] [2018-10-13 13:44:45,107 INFO L424 AbstractCegarLoop]: === Iteration 166 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:45,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:45,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1697653663, now seen corresponding path program 1 times [2018-10-13 13:44:45,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:45,933 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-13 13:44:46,640 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-10-13 13:44:46,835 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2018-10-13 13:44:47,045 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-13 13:44:47,253 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2018-10-13 13:44:47,459 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-13 13:44:47,659 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2018-10-13 13:44:47,853 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-10-13 13:44:48,039 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2018-10-13 13:44:48,218 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2018-10-13 13:44:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:44:48,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:48,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:44:48,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:44:48,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:44:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:44:48,697 INFO L87 Difference]: Start difference. First operand 24285 states and 216101 transitions. Second operand 32 states. [2018-10-13 13:44:49,800 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-13 13:44:50,121 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2018-10-13 13:44:50,510 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-10-13 13:44:50,792 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2018-10-13 13:44:51,086 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2018-10-13 13:44:51,426 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2018-10-13 13:44:51,721 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-13 13:44:52,023 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-10-13 13:44:52,344 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2018-10-13 13:44:52,682 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-13 13:44:53,022 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-10-13 13:44:53,362 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2018-10-13 13:44:53,768 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-13 13:44:54,026 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-13 13:44:54,336 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-13 13:44:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:44:55,408 INFO L93 Difference]: Finished difference Result 26561 states and 232716 transitions. [2018-10-13 13:44:55,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-13 13:44:55,408 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 45 [2018-10-13 13:44:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:44:55,518 INFO L225 Difference]: With dead ends: 26561 [2018-10-13 13:44:55,518 INFO L226 Difference]: Without dead ends: 26561 [2018-10-13 13:44:55,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=825, Invalid=2255, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:44:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26561 states. [2018-10-13 13:44:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26561 to 24543. [2018-10-13 13:44:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24543 states. [2018-10-13 13:44:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24543 states to 24543 states and 218423 transitions. [2018-10-13 13:44:56,178 INFO L78 Accepts]: Start accepts. Automaton has 24543 states and 218423 transitions. Word has length 45 [2018-10-13 13:44:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:44:56,178 INFO L481 AbstractCegarLoop]: Abstraction has 24543 states and 218423 transitions. [2018-10-13 13:44:56,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:44:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 24543 states and 218423 transitions. [2018-10-13 13:44:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:44:56,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:44:56,208 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:44:56,209 INFO L424 AbstractCegarLoop]: === Iteration 167 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:44:56,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:44:56,209 INFO L82 PathProgramCache]: Analyzing trace with hash -956339952, now seen corresponding path program 1 times [2018-10-13 13:44:56,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:44:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:44:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-13 13:44:58,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:44:58,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:44:58,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:44:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:44:58,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:44:58,656 INFO L87 Difference]: Start difference. First operand 24543 states and 218423 transitions. Second operand 34 states. [2018-10-13 13:45:00,016 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-13 13:45:00,324 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2018-10-13 13:45:00,600 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2018-10-13 13:45:01,034 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2018-10-13 13:45:01,235 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2018-10-13 13:45:01,610 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-13 13:45:02,023 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2018-10-13 13:45:02,270 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2018-10-13 13:45:02,637 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2018-10-13 13:45:03,044 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-13 13:45:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:04,446 INFO L93 Difference]: Finished difference Result 26079 states and 230096 transitions. [2018-10-13 13:45:04,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:45:04,447 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 45 [2018-10-13 13:45:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:04,555 INFO L225 Difference]: With dead ends: 26079 [2018-10-13 13:45:04,555 INFO L226 Difference]: Without dead ends: 26079 [2018-10-13 13:45:04,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=718, Invalid=2252, Unknown=0, NotChecked=0, Total=2970 [2018-10-13 13:45:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26079 states. [2018-10-13 13:45:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26079 to 7580. [2018-10-13 13:45:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7580 states. [2018-10-13 13:45:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 65857 transitions. [2018-10-13 13:45:05,009 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 65857 transitions. Word has length 45 [2018-10-13 13:45:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:05,009 INFO L481 AbstractCegarLoop]: Abstraction has 7580 states and 65857 transitions. [2018-10-13 13:45:05,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:45:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 65857 transitions. [2018-10-13 13:45:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:05,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:05,022 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] [2018-10-13 13:45:05,022 INFO L424 AbstractCegarLoop]: === Iteration 168 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:05,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash 952701091, now seen corresponding path program 1 times [2018-10-13 13:45:05,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:45:07,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:07,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:45:07,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:45:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:45:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:45:07,066 INFO L87 Difference]: Start difference. First operand 7580 states and 65857 transitions. Second operand 33 states. [2018-10-13 13:45:08,267 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-13 13:45:08,449 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2018-10-13 13:45:08,643 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2018-10-13 13:45:08,865 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-13 13:45:09,196 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-13 13:45:09,407 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2018-10-13 13:45:10,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:10,338 INFO L93 Difference]: Finished difference Result 7781 states and 66621 transitions. [2018-10-13 13:45:10,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:45:10,338 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 45 [2018-10-13 13:45:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:10,365 INFO L225 Difference]: With dead ends: 7781 [2018-10-13 13:45:10,366 INFO L226 Difference]: Without dead ends: 7781 [2018-10-13 13:45:10,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=523, Invalid=1927, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:45:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2018-10-13 13:45:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 7626. [2018-10-13 13:45:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7626 states. [2018-10-13 13:45:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7626 states to 7626 states and 66271 transitions. [2018-10-13 13:45:10,544 INFO L78 Accepts]: Start accepts. Automaton has 7626 states and 66271 transitions. Word has length 45 [2018-10-13 13:45:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:10,544 INFO L481 AbstractCegarLoop]: Abstraction has 7626 states and 66271 transitions. [2018-10-13 13:45:10,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:45:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 7626 states and 66271 transitions. [2018-10-13 13:45:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:10,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:10,558 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] [2018-10-13 13:45:10,558 INFO L424 AbstractCegarLoop]: === Iteration 169 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:10,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash -537204053, now seen corresponding path program 1 times [2018-10-13 13:45:10,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:45:11,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:11,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:45:11,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:45:11,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:45:11,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:45:11,854 INFO L87 Difference]: Start difference. First operand 7626 states and 66271 transitions. Second operand 31 states. [2018-10-13 13:45:12,913 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-10-13 13:45:13,257 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-10-13 13:45:13,585 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-13 13:45:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:14,201 INFO L93 Difference]: Finished difference Result 8284 states and 70471 transitions. [2018-10-13 13:45:14,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:45:14,202 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2018-10-13 13:45:14,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:14,232 INFO L225 Difference]: With dead ends: 8284 [2018-10-13 13:45:14,232 INFO L226 Difference]: Without dead ends: 8284 [2018-10-13 13:45:14,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:45:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2018-10-13 13:45:14,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 7658. [2018-10-13 13:45:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7658 states. [2018-10-13 13:45:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 66559 transitions. [2018-10-13 13:45:14,417 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 66559 transitions. Word has length 45 [2018-10-13 13:45:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:14,417 INFO L481 AbstractCegarLoop]: Abstraction has 7658 states and 66559 transitions. [2018-10-13 13:45:14,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:45:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 66559 transitions. [2018-10-13 13:45:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:14,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:14,430 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] [2018-10-13 13:45:14,430 INFO L424 AbstractCegarLoop]: === Iteration 170 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:14,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:14,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1282156625, now seen corresponding path program 1 times [2018-10-13 13:45:14,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:15,204 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2018-10-13 13:45:15,332 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-13 13:45:15,777 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2018-10-13 13:45:15,903 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-13 13:45:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:45:17,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:17,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:45:17,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:45:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:45:17,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:45:17,006 INFO L87 Difference]: Start difference. First operand 7658 states and 66559 transitions. Second operand 32 states. [2018-10-13 13:45:17,971 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-13 13:45:18,211 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-13 13:45:18,580 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-13 13:45:18,832 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-13 13:45:19,078 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-10-13 13:45:19,443 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2018-10-13 13:45:19,743 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-13 13:45:20,004 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-10-13 13:45:20,375 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-13 13:45:20,589 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2018-10-13 13:45:21,475 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2018-10-13 13:45:21,735 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-13 13:45:22,115 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-13 13:45:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:22,369 INFO L93 Difference]: Finished difference Result 8097 states and 68382 transitions. [2018-10-13 13:45:22,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:45:22,369 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 45 [2018-10-13 13:45:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:22,397 INFO L225 Difference]: With dead ends: 8097 [2018-10-13 13:45:22,397 INFO L226 Difference]: Without dead ends: 8097 [2018-10-13 13:45:22,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=782, Invalid=2080, Unknown=0, NotChecked=0, Total=2862 [2018-10-13 13:45:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8097 states. [2018-10-13 13:45:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8097 to 7418. [2018-10-13 13:45:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7418 states. [2018-10-13 13:45:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 64399 transitions. [2018-10-13 13:45:22,579 INFO L78 Accepts]: Start accepts. Automaton has 7418 states and 64399 transitions. Word has length 45 [2018-10-13 13:45:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:22,579 INFO L481 AbstractCegarLoop]: Abstraction has 7418 states and 64399 transitions. [2018-10-13 13:45:22,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:45:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7418 states and 64399 transitions. [2018-10-13 13:45:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:22,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:22,592 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] [2018-10-13 13:45:22,592 INFO L424 AbstractCegarLoop]: === Iteration 171 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:22,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:22,592 INFO L82 PathProgramCache]: Analyzing trace with hash 845155578, now seen corresponding path program 1 times [2018-10-13 13:45:22,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:23,350 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2018-10-13 13:45:23,731 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-13 13:45:23,856 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2018-10-13 13:45:24,863 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 13:45:24,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:24,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:45:24,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:45:24,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:45:24,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:45:24,864 INFO L87 Difference]: Start difference. First operand 7418 states and 64399 transitions. Second operand 29 states. [2018-10-13 13:45:25,656 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-13 13:45:25,952 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-13 13:45:26,096 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-13 13:45:26,242 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-13 13:45:26,504 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-13 13:45:26,705 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-13 13:45:26,963 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-13 13:45:27,298 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-13 13:45:27,459 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-13 13:45:27,683 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-10-13 13:45:28,101 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-13 13:45:28,313 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-10-13 13:45:28,559 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-13 13:45:28,756 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-13 13:45:28,920 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-13 13:45:29,093 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-13 13:45:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:29,514 INFO L93 Difference]: Finished difference Result 7932 states and 66723 transitions. [2018-10-13 13:45:29,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-13 13:45:29,514 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2018-10-13 13:45:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:29,542 INFO L225 Difference]: With dead ends: 7932 [2018-10-13 13:45:29,542 INFO L226 Difference]: Without dead ends: 7932 [2018-10-13 13:45:29,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=779, Invalid=1977, Unknown=0, NotChecked=0, Total=2756 [2018-10-13 13:45:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2018-10-13 13:45:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 7510. [2018-10-13 13:45:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7510 states. [2018-10-13 13:45:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 65227 transitions. [2018-10-13 13:45:29,732 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 65227 transitions. Word has length 45 [2018-10-13 13:45:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:29,733 INFO L481 AbstractCegarLoop]: Abstraction has 7510 states and 65227 transitions. [2018-10-13 13:45:29,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:45:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 65227 transitions. [2018-10-13 13:45:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:29,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:29,746 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] [2018-10-13 13:45:29,746 INFO L424 AbstractCegarLoop]: === Iteration 172 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:29,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash 822912687, now seen corresponding path program 1 times [2018-10-13 13:45:29,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:30,084 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2018-10-13 13:45:30,271 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2018-10-13 13:45:30,464 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2018-10-13 13:45:30,661 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 48 [2018-10-13 13:45:30,881 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2018-10-13 13:45:31,135 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 48 [2018-10-13 13:45:31,405 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 53 [2018-10-13 13:45:31,678 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2018-10-13 13:45:31,941 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 47 [2018-10-13 13:45:32,210 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-10-13 13:45:32,454 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2018-10-13 13:45:32,622 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2018-10-13 13:45:32,768 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2018-10-13 13:45:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:45:33,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:33,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:45:33,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:45:33,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:45:33,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:45:33,161 INFO L87 Difference]: Start difference. First operand 7510 states and 65227 transitions. Second operand 30 states. [2018-10-13 13:45:34,094 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2018-10-13 13:45:34,369 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2018-10-13 13:45:34,561 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2018-10-13 13:45:34,832 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-13 13:45:34,977 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-13 13:45:35,212 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-13 13:45:35,438 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2018-10-13 13:45:35,729 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-13 13:45:36,594 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-13 13:45:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:37,042 INFO L93 Difference]: Finished difference Result 10975 states and 92810 transitions. [2018-10-13 13:45:37,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:45:37,042 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 45 [2018-10-13 13:45:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:37,081 INFO L225 Difference]: With dead ends: 10975 [2018-10-13 13:45:37,081 INFO L226 Difference]: Without dead ends: 10975 [2018-10-13 13:45:37,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=580, Invalid=1676, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:45:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10975 states. [2018-10-13 13:45:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10975 to 8482. [2018-10-13 13:45:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8482 states. [2018-10-13 13:45:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 73975 transitions. [2018-10-13 13:45:37,455 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 73975 transitions. Word has length 45 [2018-10-13 13:45:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:37,455 INFO L481 AbstractCegarLoop]: Abstraction has 8482 states and 73975 transitions. [2018-10-13 13:45:37,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:45:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 73975 transitions. [2018-10-13 13:45:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:37,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:37,470 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] [2018-10-13 13:45:37,470 INFO L424 AbstractCegarLoop]: === Iteration 173 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:37,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1366985297, now seen corresponding path program 1 times [2018-10-13 13:45:37,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:45:38,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:38,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:45:38,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:45:38,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:45:38,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:45:38,719 INFO L87 Difference]: Start difference. First operand 8482 states and 73975 transitions. Second operand 28 states. [2018-10-13 13:45:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:40,338 INFO L93 Difference]: Finished difference Result 9158 states and 79133 transitions. [2018-10-13 13:45:40,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:45:40,338 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2018-10-13 13:45:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:40,371 INFO L225 Difference]: With dead ends: 9158 [2018-10-13 13:45:40,371 INFO L226 Difference]: Without dead ends: 9158 [2018-10-13 13:45:40,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:45:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9158 states. [2018-10-13 13:45:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9158 to 8572. [2018-10-13 13:45:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8572 states. [2018-10-13 13:45:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8572 states to 8572 states and 74785 transitions. [2018-10-13 13:45:40,579 INFO L78 Accepts]: Start accepts. Automaton has 8572 states and 74785 transitions. Word has length 45 [2018-10-13 13:45:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:40,579 INFO L481 AbstractCegarLoop]: Abstraction has 8572 states and 74785 transitions. [2018-10-13 13:45:40,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:45:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8572 states and 74785 transitions. [2018-10-13 13:45:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:40,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:40,594 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] [2018-10-13 13:45:40,594 INFO L424 AbstractCegarLoop]: === Iteration 174 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:40,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:40,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2111937869, now seen corresponding path program 1 times [2018-10-13 13:45:40,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:45:41,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:41,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:45:41,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:45:41,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:45:41,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:45:41,719 INFO L87 Difference]: Start difference. First operand 8572 states and 74785 transitions. Second operand 29 states. [2018-10-13 13:45:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:44,050 INFO L93 Difference]: Finished difference Result 8998 states and 77644 transitions. [2018-10-13 13:45:44,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:45:44,050 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2018-10-13 13:45:44,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:44,082 INFO L225 Difference]: With dead ends: 8998 [2018-10-13 13:45:44,082 INFO L226 Difference]: Without dead ends: 8998 [2018-10-13 13:45:44,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=424, Invalid=1468, Unknown=0, NotChecked=0, Total=1892 [2018-10-13 13:45:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8998 states. [2018-10-13 13:45:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8998 to 8650. [2018-10-13 13:45:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8650 states. [2018-10-13 13:45:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8650 states to 8650 states and 75565 transitions. [2018-10-13 13:45:44,295 INFO L78 Accepts]: Start accepts. Automaton has 8650 states and 75565 transitions. Word has length 45 [2018-10-13 13:45:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:44,295 INFO L481 AbstractCegarLoop]: Abstraction has 8650 states and 75565 transitions. [2018-10-13 13:45:44,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:45:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8650 states and 75565 transitions. [2018-10-13 13:45:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:44,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:44,310 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] [2018-10-13 13:45:44,310 INFO L424 AbstractCegarLoop]: === Iteration 175 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:44,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1438076855, now seen corresponding path program 1 times [2018-10-13 13:45:44,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:44,696 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:45:45,093 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:45:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:45:46,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:46,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:45:46,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:45:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:45:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:45:46,133 INFO L87 Difference]: Start difference. First operand 8650 states and 75565 transitions. Second operand 28 states. [2018-10-13 13:45:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:48,188 INFO L93 Difference]: Finished difference Result 14642 states and 126999 transitions. [2018-10-13 13:45:48,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:45:48,188 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2018-10-13 13:45:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:48,244 INFO L225 Difference]: With dead ends: 14642 [2018-10-13 13:45:48,244 INFO L226 Difference]: Without dead ends: 14642 [2018-10-13 13:45:48,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=517, Invalid=1463, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:45:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14642 states. [2018-10-13 13:45:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14642 to 14166. [2018-10-13 13:45:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14166 states. [2018-10-13 13:45:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 125209 transitions. [2018-10-13 13:45:48,602 INFO L78 Accepts]: Start accepts. Automaton has 14166 states and 125209 transitions. Word has length 45 [2018-10-13 13:45:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:48,602 INFO L481 AbstractCegarLoop]: Abstraction has 14166 states and 125209 transitions. [2018-10-13 13:45:48,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:45:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 14166 states and 125209 transitions. [2018-10-13 13:45:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:48,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:48,623 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] [2018-10-13 13:45:48,623 INFO L424 AbstractCegarLoop]: === Iteration 176 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:48,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:48,623 INFO L82 PathProgramCache]: Analyzing trace with hash -729578238, now seen corresponding path program 1 times [2018-10-13 13:45:48,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:49,962 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 13:45:49,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:49,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:45:49,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:45:49,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:45:49,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:45:49,963 INFO L87 Difference]: Start difference. First operand 14166 states and 125209 transitions. Second operand 29 states. [2018-10-13 13:45:50,914 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-10-13 13:45:51,059 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-13 13:45:51,216 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-13 13:45:51,417 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-13 13:45:51,666 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-13 13:45:51,917 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-10-13 13:45:52,469 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2018-10-13 13:45:52,662 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-10-13 13:45:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:53,001 INFO L93 Difference]: Finished difference Result 14382 states and 126192 transitions. [2018-10-13 13:45:53,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:45:53,001 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2018-10-13 13:45:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:53,056 INFO L225 Difference]: With dead ends: 14382 [2018-10-13 13:45:53,056 INFO L226 Difference]: Without dead ends: 14382 [2018-10-13 13:45:53,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:45:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14382 states. [2018-10-13 13:45:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14382 to 14202. [2018-10-13 13:45:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14202 states. [2018-10-13 13:45:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14202 states to 14202 states and 125533 transitions. [2018-10-13 13:45:53,420 INFO L78 Accepts]: Start accepts. Automaton has 14202 states and 125533 transitions. Word has length 45 [2018-10-13 13:45:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:53,421 INFO L481 AbstractCegarLoop]: Abstraction has 14202 states and 125533 transitions. [2018-10-13 13:45:53,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:45:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 14202 states and 125533 transitions. [2018-10-13 13:45:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:53,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:53,442 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] [2018-10-13 13:45:53,442 INFO L424 AbstractCegarLoop]: === Iteration 177 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:53,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:53,443 INFO L82 PathProgramCache]: Analyzing trace with hash -751821129, now seen corresponding path program 1 times [2018-10-13 13:45:53,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:45:55,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:55,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:45:55,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:45:55,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:45:55,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:45:55,131 INFO L87 Difference]: Start difference. First operand 14202 states and 125533 transitions. Second operand 28 states. [2018-10-13 13:45:55,914 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-13 13:45:56,132 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-13 13:45:56,302 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-13 13:45:56,729 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-13 13:45:56,924 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-13 13:45:57,179 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-13 13:45:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:45:58,083 INFO L93 Difference]: Finished difference Result 15506 states and 134957 transitions. [2018-10-13 13:45:58,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:45:58,083 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2018-10-13 13:45:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:45:58,142 INFO L225 Difference]: With dead ends: 15506 [2018-10-13 13:45:58,142 INFO L226 Difference]: Without dead ends: 15506 [2018-10-13 13:45:58,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=510, Invalid=1470, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:45:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15506 states. [2018-10-13 13:45:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15506 to 14274. [2018-10-13 13:45:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14274 states. [2018-10-13 13:45:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14274 states to 14274 states and 126181 transitions. [2018-10-13 13:45:58,499 INFO L78 Accepts]: Start accepts. Automaton has 14274 states and 126181 transitions. Word has length 45 [2018-10-13 13:45:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:45:58,499 INFO L481 AbstractCegarLoop]: Abstraction has 14274 states and 126181 transitions. [2018-10-13 13:45:58,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:45:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14274 states and 126181 transitions. [2018-10-13 13:45:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:45:58,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:45:58,518 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] [2018-10-13 13:45:58,518 INFO L424 AbstractCegarLoop]: === Iteration 178 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:45:58,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:45:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash -136656961, now seen corresponding path program 1 times [2018-10-13 13:45:58,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:45:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:45:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:45:59,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:45:59,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:45:59,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:45:59,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:45:59,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:45:59,612 INFO L87 Difference]: Start difference. First operand 14274 states and 126181 transitions. Second operand 27 states. [2018-10-13 13:46:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:01,091 INFO L93 Difference]: Finished difference Result 15850 states and 138995 transitions. [2018-10-13 13:46:01,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:46:01,092 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 45 [2018-10-13 13:46:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:01,153 INFO L225 Difference]: With dead ends: 15850 [2018-10-13 13:46:01,153 INFO L226 Difference]: Without dead ends: 15850 [2018-10-13 13:46:01,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 13:46:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15850 states. [2018-10-13 13:46:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15850 to 9396. [2018-10-13 13:46:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2018-10-13 13:46:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 82279 transitions. [2018-10-13 13:46:01,401 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 82279 transitions. Word has length 45 [2018-10-13 13:46:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:01,402 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 82279 transitions. [2018-10-13 13:46:01,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:46:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 82279 transitions. [2018-10-13 13:46:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:01,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:01,414 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] [2018-10-13 13:46:01,414 INFO L424 AbstractCegarLoop]: === Iteration 179 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:01,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:01,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1990655242, now seen corresponding path program 1 times [2018-10-13 13:46:01,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:02,315 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 13:46:02,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:02,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-13 13:46:02,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-13 13:46:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-13 13:46:02,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2018-10-13 13:46:02,316 INFO L87 Difference]: Start difference. First operand 9396 states and 82279 transitions. Second operand 24 states. [2018-10-13 13:46:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:03,452 INFO L93 Difference]: Finished difference Result 9575 states and 83114 transitions. [2018-10-13 13:46:03,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-13 13:46:03,452 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-10-13 13:46:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:03,487 INFO L225 Difference]: With dead ends: 9575 [2018-10-13 13:46:03,487 INFO L226 Difference]: Without dead ends: 9575 [2018-10-13 13:46:03,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:46:03,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2018-10-13 13:46:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 9408. [2018-10-13 13:46:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9408 states. [2018-10-13 13:46:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9408 states to 9408 states and 82387 transitions. [2018-10-13 13:46:03,689 INFO L78 Accepts]: Start accepts. Automaton has 9408 states and 82387 transitions. Word has length 45 [2018-10-13 13:46:03,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:03,689 INFO L481 AbstractCegarLoop]: Abstraction has 9408 states and 82387 transitions. [2018-10-13 13:46:03,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-13 13:46:03,689 INFO L276 IsEmpty]: Start isEmpty. Operand 9408 states and 82387 transitions. [2018-10-13 13:46:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:03,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:03,702 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 13:46:03,702 INFO L424 AbstractCegarLoop]: === Iteration 180 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:03,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1001600999, now seen corresponding path program 1 times [2018-10-13 13:46:03,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:03,960 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 13:46:03,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:03,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-13 13:46:03,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-13 13:46:03,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-13 13:46:03,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-10-13 13:46:03,961 INFO L87 Difference]: Start difference. First operand 9408 states and 82387 transitions. Second operand 16 states. [2018-10-13 13:46:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:04,526 INFO L93 Difference]: Finished difference Result 9523 states and 82899 transitions. [2018-10-13 13:46:04,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-13 13:46:04,526 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2018-10-13 13:46:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:04,560 INFO L225 Difference]: With dead ends: 9523 [2018-10-13 13:46:04,560 INFO L226 Difference]: Without dead ends: 9523 [2018-10-13 13:46:04,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-13 13:46:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2018-10-13 13:46:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 9428. [2018-10-13 13:46:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9428 states. [2018-10-13 13:46:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 82564 transitions. [2018-10-13 13:46:04,782 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 82564 transitions. Word has length 45 [2018-10-13 13:46:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:04,782 INFO L481 AbstractCegarLoop]: Abstraction has 9428 states and 82564 transitions. [2018-10-13 13:46:04,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-13 13:46:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 82564 transitions. [2018-10-13 13:46:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:04,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:04,796 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] [2018-10-13 13:46:04,796 INFO L424 AbstractCegarLoop]: === Iteration 181 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:04,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1653765669, now seen corresponding path program 1 times [2018-10-13 13:46:04,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:46:06,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:06,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:46:06,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:46:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:46:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:46:06,460 INFO L87 Difference]: Start difference. First operand 9428 states and 82564 transitions. Second operand 32 states. [2018-10-13 13:46:07,551 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-13 13:46:07,734 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-13 13:46:07,940 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2018-10-13 13:46:08,270 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-13 13:46:08,483 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-13 13:46:08,688 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-10-13 13:46:08,938 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-13 13:46:09,421 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-13 13:46:09,905 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2018-10-13 13:46:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:10,223 INFO L93 Difference]: Finished difference Result 11430 states and 98211 transitions. [2018-10-13 13:46:10,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:46:10,224 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 45 [2018-10-13 13:46:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:10,265 INFO L225 Difference]: With dead ends: 11430 [2018-10-13 13:46:10,265 INFO L226 Difference]: Without dead ends: 11430 [2018-10-13 13:46:10,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=633, Invalid=1917, Unknown=0, NotChecked=0, Total=2550 [2018-10-13 13:46:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11430 states. [2018-10-13 13:46:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11430 to 9846. [2018-10-13 13:46:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9846 states. [2018-10-13 13:46:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 86326 transitions. [2018-10-13 13:46:10,511 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 86326 transitions. Word has length 45 [2018-10-13 13:46:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:10,511 INFO L481 AbstractCegarLoop]: Abstraction has 9846 states and 86326 transitions. [2018-10-13 13:46:10,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:46:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 86326 transitions. [2018-10-13 13:46:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:10,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:10,526 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] [2018-10-13 13:46:10,526 INFO L424 AbstractCegarLoop]: === Iteration 182 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:10,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:10,526 INFO L82 PathProgramCache]: Analyzing trace with hash 163860525, now seen corresponding path program 1 times [2018-10-13 13:46:10,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:46:12,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:12,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:46:12,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:46:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:46:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:46:12,238 INFO L87 Difference]: Start difference. First operand 9846 states and 86326 transitions. Second operand 31 states. [2018-10-13 13:46:12,899 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2018-10-13 13:46:13,100 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-13 13:46:13,403 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-10-13 13:46:13,704 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2018-10-13 13:46:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:14,380 INFO L93 Difference]: Finished difference Result 10777 states and 92803 transitions. [2018-10-13 13:46:14,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:46:14,380 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2018-10-13 13:46:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:14,419 INFO L225 Difference]: With dead ends: 10777 [2018-10-13 13:46:14,419 INFO L226 Difference]: Without dead ends: 10777 [2018-10-13 13:46:14,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:46:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2018-10-13 13:46:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 10150. [2018-10-13 13:46:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10150 states. [2018-10-13 13:46:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 89062 transitions. [2018-10-13 13:46:14,668 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 89062 transitions. Word has length 45 [2018-10-13 13:46:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:14,668 INFO L481 AbstractCegarLoop]: Abstraction has 10150 states and 89062 transitions. [2018-10-13 13:46:14,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:46:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 89062 transitions. [2018-10-13 13:46:14,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:14,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:14,683 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] [2018-10-13 13:46:14,684 INFO L424 AbstractCegarLoop]: === Iteration 183 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:14,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1546220156, now seen corresponding path program 1 times [2018-10-13 13:46:14,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:15,387 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-13 13:46:15,541 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-13 13:46:15,722 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 13:46:16,005 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-10-13 13:46:16,240 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-10-13 13:46:16,538 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2018-10-13 13:46:16,923 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 87 [2018-10-13 13:46:17,613 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 114 [2018-10-13 13:46:18,395 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 122 [2018-10-13 13:46:19,160 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 116 [2018-10-13 13:46:19,818 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 103 [2018-10-13 13:46:20,508 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-10-13 13:46:21,156 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2018-10-13 13:46:21,754 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2018-10-13 13:46:22,254 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-10-13 13:46:22,607 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2018-10-13 13:46:22,971 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-13 13:46:23,314 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-10-13 13:46:23,727 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2018-10-13 13:46:23,903 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-10-13 13:46:24,188 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 13:46:24,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:24,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-13 13:46:24,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-13 13:46:24,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-13 13:46:24,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2018-10-13 13:46:24,189 INFO L87 Difference]: Start difference. First operand 10150 states and 89062 transitions. Second operand 35 states. [2018-10-13 13:46:24,857 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-13 13:46:25,069 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2018-10-13 13:46:25,313 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-13 13:46:25,572 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2018-10-13 13:46:25,845 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2018-10-13 13:46:26,124 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2018-10-13 13:46:26,501 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2018-10-13 13:46:26,934 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2018-10-13 13:46:27,465 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 106 [2018-10-13 13:46:28,606 WARN L178 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 122 [2018-10-13 13:46:29,820 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 226 DAG size of output: 132 [2018-10-13 13:46:30,774 WARN L178 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 122 [2018-10-13 13:46:31,908 WARN L178 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 120 [2018-10-13 13:46:32,909 WARN L178 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 123 [2018-10-13 13:46:33,972 WARN L178 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 126 [2018-10-13 13:46:34,952 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 121 [2018-10-13 13:46:36,034 WARN L178 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 125 [2018-10-13 13:46:36,985 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 124 [2018-10-13 13:46:38,077 WARN L178 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 124 [2018-10-13 13:46:38,607 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 109 [2018-10-13 13:46:39,151 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 112 [2018-10-13 13:46:40,597 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 243 DAG size of output: 131 [2018-10-13 13:46:41,852 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 246 DAG size of output: 135 [2018-10-13 13:46:43,453 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 132 [2018-10-13 13:46:44,104 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 117 [2018-10-13 13:46:45,963 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 243 DAG size of output: 132 [2018-10-13 13:46:47,003 WARN L178 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 127 [2018-10-13 13:46:47,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:47,767 INFO L93 Difference]: Finished difference Result 13086 states and 112631 transitions. [2018-10-13 13:46:47,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-13 13:46:47,767 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 45 [2018-10-13 13:46:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:47,816 INFO L225 Difference]: With dead ends: 13086 [2018-10-13 13:46:47,816 INFO L226 Difference]: Without dead ends: 13086 [2018-10-13 13:46:47,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=1178, Invalid=3112, Unknown=0, NotChecked=0, Total=4290 [2018-10-13 13:46:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2018-10-13 13:46:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 11714. [2018-10-13 13:46:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11714 states. [2018-10-13 13:46:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11714 states to 11714 states and 103029 transitions. [2018-10-13 13:46:48,087 INFO L78 Accepts]: Start accepts. Automaton has 11714 states and 103029 transitions. Word has length 45 [2018-10-13 13:46:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:48,087 INFO L481 AbstractCegarLoop]: Abstraction has 11714 states and 103029 transitions. [2018-10-13 13:46:48,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-13 13:46:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 11714 states and 103029 transitions. [2018-10-13 13:46:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:48,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:48,103 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] [2018-10-13 13:46:48,104 INFO L424 AbstractCegarLoop]: === Iteration 184 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:48,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1410873291, now seen corresponding path program 1 times [2018-10-13 13:46:48,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:46:49,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:49,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:46:49,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:46:49,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:46:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:46:49,446 INFO L87 Difference]: Start difference. First operand 11714 states and 103029 transitions. Second operand 30 states. [2018-10-13 13:46:50,801 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-13 13:46:51,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:51,873 INFO L93 Difference]: Finished difference Result 15854 states and 137345 transitions. [2018-10-13 13:46:51,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:46:51,873 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 45 [2018-10-13 13:46:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:51,934 INFO L225 Difference]: With dead ends: 15854 [2018-10-13 13:46:51,934 INFO L226 Difference]: Without dead ends: 15854 [2018-10-13 13:46:51,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:46:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15854 states. [2018-10-13 13:46:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15854 to 14890. [2018-10-13 13:46:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14890 states. [2018-10-13 13:46:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 131613 transitions. [2018-10-13 13:46:52,315 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 131613 transitions. Word has length 45 [2018-10-13 13:46:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:52,316 INFO L481 AbstractCegarLoop]: Abstraction has 14890 states and 131613 transitions. [2018-10-13 13:46:52,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:46:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 131613 transitions. [2018-10-13 13:46:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:52,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:52,337 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] [2018-10-13 13:46:52,337 INFO L424 AbstractCegarLoop]: === Iteration 185 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:52,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:52,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1603247476, now seen corresponding path program 1 times [2018-10-13 13:46:52,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:52,975 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 13:46:52,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:52,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-13 13:46:52,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-13 13:46:52,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-13 13:46:52,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2018-10-13 13:46:52,976 INFO L87 Difference]: Start difference. First operand 14890 states and 131613 transitions. Second operand 22 states. [2018-10-13 13:46:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:54,461 INFO L93 Difference]: Finished difference Result 17248 states and 150998 transitions. [2018-10-13 13:46:54,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-13 13:46:54,461 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2018-10-13 13:46:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:54,527 INFO L225 Difference]: With dead ends: 17248 [2018-10-13 13:46:54,527 INFO L226 Difference]: Without dead ends: 17248 [2018-10-13 13:46:54,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:46:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2018-10-13 13:46:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 16824. [2018-10-13 13:46:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16824 states. [2018-10-13 13:46:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16824 states to 16824 states and 149019 transitions. [2018-10-13 13:46:54,941 INFO L78 Accepts]: Start accepts. Automaton has 16824 states and 149019 transitions. Word has length 45 [2018-10-13 13:46:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:54,941 INFO L481 AbstractCegarLoop]: Abstraction has 16824 states and 149019 transitions. [2018-10-13 13:46:54,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-13 13:46:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 16824 states and 149019 transitions. [2018-10-13 13:46:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:54,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:54,965 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 13:46:54,966 INFO L424 AbstractCegarLoop]: === Iteration 186 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:54,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash -300536421, now seen corresponding path program 1 times [2018-10-13 13:46:54,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:55,197 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 13:46:55,197 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:46:55,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-13 13:46:55,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-13 13:46:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-13 13:46:55,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-10-13 13:46:55,198 INFO L87 Difference]: Start difference. First operand 16824 states and 149019 transitions. Second operand 17 states. [2018-10-13 13:46:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:46:56,005 INFO L93 Difference]: Finished difference Result 17877 states and 157720 transitions. [2018-10-13 13:46:56,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-13 13:46:56,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-10-13 13:46:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:46:56,074 INFO L225 Difference]: With dead ends: 17877 [2018-10-13 13:46:56,074 INFO L226 Difference]: Without dead ends: 17877 [2018-10-13 13:46:56,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-13 13:46:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17877 states. [2018-10-13 13:46:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17877 to 17732. [2018-10-13 13:46:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17732 states. [2018-10-13 13:46:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17732 states to 17732 states and 157112 transitions. [2018-10-13 13:46:56,831 INFO L78 Accepts]: Start accepts. Automaton has 17732 states and 157112 transitions. Word has length 45 [2018-10-13 13:46:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:46:56,831 INFO L481 AbstractCegarLoop]: Abstraction has 17732 states and 157112 transitions. [2018-10-13 13:46:56,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-13 13:46:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17732 states and 157112 transitions. [2018-10-13 13:46:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:46:56,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:46:56,854 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] [2018-10-13 13:46:56,854 INFO L424 AbstractCegarLoop]: === Iteration 187 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:46:56,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:46:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash -137121169, now seen corresponding path program 1 times [2018-10-13 13:46:56,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:46:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:46:57,360 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2018-10-13 13:46:57,528 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2018-10-13 13:46:57,724 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2018-10-13 13:46:57,928 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-13 13:46:58,131 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2018-10-13 13:46:58,341 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-13 13:46:58,519 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-13 13:46:58,706 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-13 13:46:58,857 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-13 13:46:59,024 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-10-13 13:46:59,186 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-13 13:46:59,340 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-10-13 13:46:59,489 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-13 13:46:59,637 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-13 13:46:59,785 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-10-13 13:46:59,925 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-10-13 13:47:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:47:00,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:47:00,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-13 13:47:00,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-13 13:47:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-13 13:47:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2018-10-13 13:47:00,877 INFO L87 Difference]: Start difference. First operand 17732 states and 157112 transitions. Second operand 34 states. [2018-10-13 13:47:02,192 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-13 13:47:02,512 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2018-10-13 13:47:02,921 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-13 13:47:03,213 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-10-13 13:47:03,496 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-13 13:47:03,875 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-13 13:47:04,154 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2018-10-13 13:47:04,485 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-13 13:47:04,844 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-13 13:47:05,172 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-13 13:47:05,930 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-10-13 13:47:06,257 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2018-10-13 13:47:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:06,681 INFO L93 Difference]: Finished difference Result 19579 states and 169348 transitions. [2018-10-13 13:47:06,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-13 13:47:06,681 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 45 [2018-10-13 13:47:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:06,751 INFO L225 Difference]: With dead ends: 19579 [2018-10-13 13:47:06,752 INFO L226 Difference]: Without dead ends: 19579 [2018-10-13 13:47:06,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=767, Invalid=2313, Unknown=0, NotChecked=0, Total=3080 [2018-10-13 13:47:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19579 states. [2018-10-13 13:47:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19579 to 18238. [2018-10-13 13:47:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18238 states. [2018-10-13 13:47:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18238 states to 18238 states and 161666 transitions. [2018-10-13 13:47:07,163 INFO L78 Accepts]: Start accepts. Automaton has 18238 states and 161666 transitions. Word has length 45 [2018-10-13 13:47:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:07,164 INFO L481 AbstractCegarLoop]: Abstraction has 18238 states and 161666 transitions. [2018-10-13 13:47:07,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-13 13:47:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 18238 states and 161666 transitions. [2018-10-13 13:47:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:07,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:07,188 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] [2018-10-13 13:47:07,189 INFO L424 AbstractCegarLoop]: === Iteration 188 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:07,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1627026313, now seen corresponding path program 1 times [2018-10-13 13:47:07,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-13 13:47:09,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:47:09,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2018-10-13 13:47:09,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:47:09,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:47:09,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:47:09,491 INFO L87 Difference]: Start difference. First operand 18238 states and 161666 transitions. Second operand 31 states. [2018-10-13 13:47:10,368 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-13 13:47:10,560 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2018-10-13 13:47:10,835 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2018-10-13 13:47:11,188 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2018-10-13 13:47:11,427 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-10-13 13:47:11,671 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2018-10-13 13:47:11,963 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-10-13 13:47:12,265 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-13 13:47:12,542 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2018-10-13 13:47:12,915 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-10-13 13:47:13,708 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-10-13 13:47:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:14,146 INFO L93 Difference]: Finished difference Result 22935 states and 199183 transitions. [2018-10-13 13:47:14,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:47:14,147 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2018-10-13 13:47:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:14,237 INFO L225 Difference]: With dead ends: 22935 [2018-10-13 13:47:14,238 INFO L226 Difference]: Without dead ends: 22935 [2018-10-13 13:47:14,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=640, Invalid=1810, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:47:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22935 states. [2018-10-13 13:47:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22935 to 20500. [2018-10-13 13:47:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20500 states. [2018-10-13 13:47:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20500 states to 20500 states and 182024 transitions. [2018-10-13 13:47:14,780 INFO L78 Accepts]: Start accepts. Automaton has 20500 states and 182024 transitions. Word has length 45 [2018-10-13 13:47:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:14,780 INFO L481 AbstractCegarLoop]: Abstraction has 20500 states and 182024 transitions. [2018-10-13 13:47:14,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:47:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 20500 states and 182024 transitions. [2018-10-13 13:47:14,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:14,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:14,812 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] [2018-10-13 13:47:14,812 INFO L424 AbstractCegarLoop]: === Iteration 189 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:14,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:14,812 INFO L82 PathProgramCache]: Analyzing trace with hash -266909573, now seen corresponding path program 1 times [2018-10-13 13:47:14,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:16,000 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-13 13:47:16,163 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2018-10-13 13:47:16,346 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2018-10-13 13:47:16,525 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2018-10-13 13:47:16,697 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2018-10-13 13:47:16,985 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-13 13:47:17,259 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2018-10-13 13:47:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:47:17,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:47:17,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-13 13:47:17,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-13 13:47:17,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-13 13:47:17,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:47:17,870 INFO L87 Difference]: Start difference. First operand 20500 states and 182024 transitions. Second operand 33 states. [2018-10-13 13:47:18,960 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-13 13:47:19,168 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2018-10-13 13:47:19,487 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-13 13:47:19,660 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-13 13:47:20,008 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2018-10-13 13:47:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:20,838 INFO L93 Difference]: Finished difference Result 21627 states and 189659 transitions. [2018-10-13 13:47:20,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-13 13:47:20,839 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 45 [2018-10-13 13:47:20,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:20,925 INFO L225 Difference]: With dead ends: 21627 [2018-10-13 13:47:20,925 INFO L226 Difference]: Without dead ends: 21627 [2018-10-13 13:47:20,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=456, Invalid=1706, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:47:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21627 states. [2018-10-13 13:47:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21627 to 20572. [2018-10-13 13:47:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20572 states. [2018-10-13 13:47:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20572 states to 20572 states and 182672 transitions. [2018-10-13 13:47:21,445 INFO L78 Accepts]: Start accepts. Automaton has 20572 states and 182672 transitions. Word has length 45 [2018-10-13 13:47:21,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:21,445 INFO L481 AbstractCegarLoop]: Abstraction has 20572 states and 182672 transitions. [2018-10-13 13:47:21,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-13 13:47:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 20572 states and 182672 transitions. [2018-10-13 13:47:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:21,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:21,478 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] [2018-10-13 13:47:21,478 INFO L424 AbstractCegarLoop]: === Iteration 190 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:21,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -459283758, now seen corresponding path program 1 times [2018-10-13 13:47:21,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:23,002 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-10-13 13:47:23,148 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-13 13:47:23,289 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-10-13 13:47:23,427 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2018-10-13 13:47:23,560 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-10-13 13:47:24,274 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 13:47:24,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:47:24,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:47:24,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:47:24,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:47:24,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:47:24,275 INFO L87 Difference]: Start difference. First operand 20572 states and 182672 transitions. Second operand 30 states. [2018-10-13 13:47:25,365 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-13 13:47:25,539 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-13 13:47:25,845 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-13 13:47:26,028 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-10-13 13:47:26,591 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-13 13:47:26,777 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2018-10-13 13:47:27,076 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-13 13:47:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:27,254 INFO L93 Difference]: Finished difference Result 22269 states and 196436 transitions. [2018-10-13 13:47:27,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:47:27,255 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 45 [2018-10-13 13:47:27,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:27,343 INFO L225 Difference]: With dead ends: 22269 [2018-10-13 13:47:27,343 INFO L226 Difference]: Without dead ends: 22269 [2018-10-13 13:47:27,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=516, Invalid=1646, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:47:27,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22269 states. [2018-10-13 13:47:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22269 to 19746. [2018-10-13 13:47:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19746 states. [2018-10-13 13:47:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19746 states to 19746 states and 175238 transitions. [2018-10-13 13:47:27,852 INFO L78 Accepts]: Start accepts. Automaton has 19746 states and 175238 transitions. Word has length 45 [2018-10-13 13:47:27,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:27,853 INFO L481 AbstractCegarLoop]: Abstraction has 19746 states and 175238 transitions. [2018-10-13 13:47:27,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:47:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 19746 states and 175238 transitions. [2018-10-13 13:47:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:27,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:27,882 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 13:47:27,883 INFO L424 AbstractCegarLoop]: === Iteration 191 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:27,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash 843427297, now seen corresponding path program 1 times [2018-10-13 13:47:27,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:28,534 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 37 [2018-10-13 13:47:28,681 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 39 [2018-10-13 13:47:28,842 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 43 [2018-10-13 13:47:29,033 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 47 [2018-10-13 13:47:29,287 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 51 [2018-10-13 13:47:29,507 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 55 [2018-10-13 13:47:29,755 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 63 [2018-10-13 13:47:29,904 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 55 [2018-10-13 13:47:30,066 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 59 [2018-10-13 13:47:30,227 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2018-10-13 13:47:30,385 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 53 [2018-10-13 13:47:30,541 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 50 [2018-10-13 13:47:30,701 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 47 [2018-10-13 13:47:31,121 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 13:47:31,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:47:31,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2018-10-13 13:47:31,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:47:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:47:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:47:31,122 INFO L87 Difference]: Start difference. First operand 19746 states and 175238 transitions. Second operand 28 states. [2018-10-13 13:47:32,024 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-13 13:47:32,278 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-13 13:47:32,549 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2018-10-13 13:47:32,834 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-13 13:47:33,118 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2018-10-13 13:47:33,297 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-13 13:47:33,557 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-13 13:47:34,149 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-13 13:47:34,590 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-13 13:47:34,929 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-13 13:47:35,206 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-13 13:47:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:35,671 INFO L93 Difference]: Finished difference Result 20700 states and 182004 transitions. [2018-10-13 13:47:35,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-13 13:47:35,671 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2018-10-13 13:47:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:35,752 INFO L225 Difference]: With dead ends: 20700 [2018-10-13 13:47:35,752 INFO L226 Difference]: Without dead ends: 20700 [2018-10-13 13:47:35,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:47:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20700 states. [2018-10-13 13:47:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20700 to 20449. [2018-10-13 13:47:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20449 states. [2018-10-13 13:47:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20449 states to 20449 states and 181463 transitions. [2018-10-13 13:47:36,270 INFO L78 Accepts]: Start accepts. Automaton has 20449 states and 181463 transitions. Word has length 45 [2018-10-13 13:47:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:36,270 INFO L481 AbstractCegarLoop]: Abstraction has 20449 states and 181463 transitions. [2018-10-13 13:47:36,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:47:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 20449 states and 181463 transitions. [2018-10-13 13:47:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:36,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:36,301 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 13:47:36,302 INFO L424 AbstractCegarLoop]: === Iteration 192 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:36,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:36,302 INFO L82 PathProgramCache]: Analyzing trace with hash -824441343, now seen corresponding path program 1 times [2018-10-13 13:47:36,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:36,599 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 13:47:36,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:47:36,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-13 13:47:36,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-13 13:47:36,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-13 13:47:36,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-10-13 13:47:36,600 INFO L87 Difference]: Start difference. First operand 20449 states and 181463 transitions. Second operand 18 states. [2018-10-13 13:47:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:37,522 INFO L93 Difference]: Finished difference Result 20626 states and 182120 transitions. [2018-10-13 13:47:37,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-13 13:47:37,523 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2018-10-13 13:47:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:37,604 INFO L225 Difference]: With dead ends: 20626 [2018-10-13 13:47:37,604 INFO L226 Difference]: Without dead ends: 20626 [2018-10-13 13:47:37,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:47:37,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20626 states. [2018-10-13 13:47:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20626 to 20449. [2018-10-13 13:47:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20449 states. [2018-10-13 13:47:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20449 states to 20449 states and 181463 transitions. [2018-10-13 13:47:38,119 INFO L78 Accepts]: Start accepts. Automaton has 20449 states and 181463 transitions. Word has length 45 [2018-10-13 13:47:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:38,120 INFO L481 AbstractCegarLoop]: Abstraction has 20449 states and 181463 transitions. [2018-10-13 13:47:38,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-13 13:47:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 20449 states and 181463 transitions. [2018-10-13 13:47:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:38,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:38,152 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] [2018-10-13 13:47:38,152 INFO L424 AbstractCegarLoop]: === Iteration 193 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:38,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:38,152 INFO L82 PathProgramCache]: Analyzing trace with hash -553668860, now seen corresponding path program 1 times [2018-10-13 13:47:38,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:39,700 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 13:47:39,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:47:39,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:47:39,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:47:39,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:47:39,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:47:39,701 INFO L87 Difference]: Start difference. First operand 20449 states and 181463 transitions. Second operand 28 states. [2018-10-13 13:47:40,555 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-13 13:47:40,884 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-13 13:47:41,189 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-13 13:47:41,374 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-13 13:47:41,545 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-13 13:47:41,763 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-13 13:47:42,032 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-13 13:47:42,369 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-13 13:47:42,570 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-13 13:47:42,787 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-13 13:47:43,027 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-13 13:47:43,527 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-13 13:47:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:43,945 INFO L93 Difference]: Finished difference Result 20970 states and 183225 transitions. [2018-10-13 13:47:43,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:47:43,946 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2018-10-13 13:47:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:44,028 INFO L225 Difference]: With dead ends: 20970 [2018-10-13 13:47:44,028 INFO L226 Difference]: Without dead ends: 20970 [2018-10-13 13:47:44,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=648, Invalid=1704, Unknown=0, NotChecked=0, Total=2352 [2018-10-13 13:47:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20970 states. [2018-10-13 13:47:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20970 to 20545. [2018-10-13 13:47:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20545 states. [2018-10-13 13:47:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20545 states to 20545 states and 182327 transitions. [2018-10-13 13:47:44,510 INFO L78 Accepts]: Start accepts. Automaton has 20545 states and 182327 transitions. Word has length 45 [2018-10-13 13:47:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:44,510 INFO L481 AbstractCegarLoop]: Abstraction has 20545 states and 182327 transitions. [2018-10-13 13:47:44,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:47:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 20545 states and 182327 transitions. [2018-10-13 13:47:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:44,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:44,538 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] [2018-10-13 13:47:44,538 INFO L424 AbstractCegarLoop]: === Iteration 194 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:44,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:44,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1949992742, now seen corresponding path program 1 times [2018-10-13 13:47:44,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:47:45,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:47:45,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-13 13:47:45,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:47:45,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:47:45,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:47:45,727 INFO L87 Difference]: Start difference. First operand 20545 states and 182327 transitions. Second operand 26 states. [2018-10-13 13:47:46,629 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-13 13:47:46,850 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2018-10-13 13:47:47,329 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-13 13:47:47,489 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-13 13:47:47,644 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-13 13:47:47,840 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-10-13 13:47:48,074 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-13 13:47:48,432 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-10-13 13:47:48,722 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-13 13:47:49,144 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-10-13 13:47:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:49,668 INFO L93 Difference]: Finished difference Result 22278 states and 194966 transitions. [2018-10-13 13:47:49,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:47:49,668 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2018-10-13 13:47:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:49,756 INFO L225 Difference]: With dead ends: 22278 [2018-10-13 13:47:49,756 INFO L226 Difference]: Without dead ends: 22278 [2018-10-13 13:47:49,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=526, Invalid=1454, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:47:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2018-10-13 13:47:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 20957. [2018-10-13 13:47:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20957 states. [2018-10-13 13:47:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20957 states to 20957 states and 186035 transitions. [2018-10-13 13:47:50,237 INFO L78 Accepts]: Start accepts. Automaton has 20957 states and 186035 transitions. Word has length 45 [2018-10-13 13:47:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:50,237 INFO L481 AbstractCegarLoop]: Abstraction has 20957 states and 186035 transitions. [2018-10-13 13:47:50,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:47:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 20957 states and 186035 transitions. [2018-10-13 13:47:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:50,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:50,266 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] [2018-10-13 13:47:50,266 INFO L424 AbstractCegarLoop]: === Iteration 195 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:50,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash -831826761, now seen corresponding path program 2 times [2018-10-13 13:47:50,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:50,701 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2018-10-13 13:47:50,886 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2018-10-13 13:47:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-13 13:47:52,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:47:52,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-13 13:47:52,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:47:52,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:47:52,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:47:52,068 INFO L87 Difference]: Start difference. First operand 20957 states and 186035 transitions. Second operand 30 states. [2018-10-13 13:47:54,732 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-13 13:47:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:47:55,444 INFO L93 Difference]: Finished difference Result 33508 states and 294312 transitions. [2018-10-13 13:47:55,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:47:55,444 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 45 [2018-10-13 13:47:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:47:55,585 INFO L225 Difference]: With dead ends: 33508 [2018-10-13 13:47:55,585 INFO L226 Difference]: Without dead ends: 33508 [2018-10-13 13:47:55,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=555, Invalid=1607, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:47:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33508 states. [2018-10-13 13:47:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33508 to 32421. [2018-10-13 13:47:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32421 states. [2018-10-13 13:47:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32421 states to 32421 states and 289211 transitions. [2018-10-13 13:47:56,469 INFO L78 Accepts]: Start accepts. Automaton has 32421 states and 289211 transitions. Word has length 45 [2018-10-13 13:47:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:47:56,469 INFO L481 AbstractCegarLoop]: Abstraction has 32421 states and 289211 transitions. [2018-10-13 13:47:56,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:47:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32421 states and 289211 transitions. [2018-10-13 13:47:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:47:56,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:47:56,511 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 13:47:56,511 INFO L424 AbstractCegarLoop]: === Iteration 196 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:47:56,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:47:56,511 INFO L82 PathProgramCache]: Analyzing trace with hash -647281687, now seen corresponding path program 1 times [2018-10-13 13:47:56,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:47:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:47:56,802 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2018-10-13 13:47:57,767 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 13:47:57,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:47:57,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:47:57,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:47:57,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:47:57,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:47:57,768 INFO L87 Difference]: Start difference. First operand 32421 states and 289211 transitions. Second operand 26 states. [2018-10-13 13:48:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:00,012 INFO L93 Difference]: Finished difference Result 32591 states and 289860 transitions. [2018-10-13 13:48:00,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:48:00,013 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2018-10-13 13:48:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:00,150 INFO L225 Difference]: With dead ends: 32591 [2018-10-13 13:48:00,150 INFO L226 Difference]: Without dead ends: 32591 [2018-10-13 13:48:00,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=382, Invalid=1178, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 13:48:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32591 states. [2018-10-13 13:48:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32591 to 32465. [2018-10-13 13:48:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32465 states. [2018-10-13 13:48:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32465 states to 32465 states and 289607 transitions. [2018-10-13 13:48:01,009 INFO L78 Accepts]: Start accepts. Automaton has 32465 states and 289607 transitions. Word has length 45 [2018-10-13 13:48:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:01,010 INFO L481 AbstractCegarLoop]: Abstraction has 32465 states and 289607 transitions. [2018-10-13 13:48:01,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:48:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 32465 states and 289607 transitions. [2018-10-13 13:48:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:48:01,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:01,051 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 13:48:01,051 INFO L424 AbstractCegarLoop]: === Iteration 197 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:01,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:01,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2137990671, now seen corresponding path program 1 times [2018-10-13 13:48:01,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:01,602 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 13:48:01,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:48:01,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-13 13:48:01,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-13 13:48:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-13 13:48:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2018-10-13 13:48:01,602 INFO L87 Difference]: Start difference. First operand 32465 states and 289607 transitions. Second operand 22 states. [2018-10-13 13:48:02,380 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-10-13 13:48:02,557 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-10-13 13:48:02,718 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-13 13:48:02,873 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-10-13 13:48:03,154 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-13 13:48:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:03,788 INFO L93 Difference]: Finished difference Result 33226 states and 295294 transitions. [2018-10-13 13:48:03,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:48:03,789 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2018-10-13 13:48:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:03,929 INFO L225 Difference]: With dead ends: 33226 [2018-10-13 13:48:03,929 INFO L226 Difference]: Without dead ends: 33226 [2018-10-13 13:48:03,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-10-13 13:48:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33226 states. [2018-10-13 13:48:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33226 to 33081. [2018-10-13 13:48:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33081 states. [2018-10-13 13:48:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33081 states to 33081 states and 295150 transitions. [2018-10-13 13:48:04,740 INFO L78 Accepts]: Start accepts. Automaton has 33081 states and 295150 transitions. Word has length 45 [2018-10-13 13:48:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:04,741 INFO L481 AbstractCegarLoop]: Abstraction has 33081 states and 295150 transitions. [2018-10-13 13:48:04,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-13 13:48:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 33081 states and 295150 transitions. [2018-10-13 13:48:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-13 13:48:04,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:04,779 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 13:48:04,779 INFO L424 AbstractCegarLoop]: === Iteration 198 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:04,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:04,779 INFO L82 PathProgramCache]: Analyzing trace with hash -68149824, now seen corresponding path program 1 times [2018-10-13 13:48:04,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:05,108 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2018-10-13 13:48:05,261 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2018-10-13 13:48:05,391 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 25 [2018-10-13 13:48:05,570 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 13:48:05,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:48:05,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-13 13:48:05,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-13 13:48:05,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-13 13:48:05,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2018-10-13 13:48:05,571 INFO L87 Difference]: Start difference. First operand 33081 states and 295150 transitions. Second operand 16 states. [2018-10-13 13:48:06,637 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-10-13 13:48:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:07,979 INFO L93 Difference]: Finished difference Result 34303 states and 304505 transitions. [2018-10-13 13:48:07,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:48:07,980 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2018-10-13 13:48:07,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:08,125 INFO L225 Difference]: With dead ends: 34303 [2018-10-13 13:48:08,125 INFO L226 Difference]: Without dead ends: 34292 [2018-10-13 13:48:08,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=299, Invalid=631, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:48:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34292 states. [2018-10-13 13:48:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34292 to 34065. [2018-10-13 13:48:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34065 states. [2018-10-13 13:48:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34065 states to 34065 states and 303848 transitions. [2018-10-13 13:48:09,033 INFO L78 Accepts]: Start accepts. Automaton has 34065 states and 303848 transitions. Word has length 45 [2018-10-13 13:48:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:09,033 INFO L481 AbstractCegarLoop]: Abstraction has 34065 states and 303848 transitions. [2018-10-13 13:48:09,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-13 13:48:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 34065 states and 303848 transitions. [2018-10-13 13:48:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:48:09,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:09,080 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] [2018-10-13 13:48:09,080 INFO L424 AbstractCegarLoop]: === Iteration 199 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:09,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1555872265, now seen corresponding path program 1 times [2018-10-13 13:48:09,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:11,018 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 13:48:11,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:48:11,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:48:11,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:48:11,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:48:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:48:11,019 INFO L87 Difference]: Start difference. First operand 34065 states and 303848 transitions. Second operand 32 states. [2018-10-13 13:48:11,895 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2018-10-13 13:48:12,250 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2018-10-13 13:48:12,387 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-13 13:48:12,763 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-13 13:48:13,147 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-13 13:48:13,851 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2018-10-13 13:48:14,016 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-13 13:48:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:14,734 INFO L93 Difference]: Finished difference Result 43219 states and 382114 transitions. [2018-10-13 13:48:14,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:48:14,734 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 46 [2018-10-13 13:48:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:14,924 INFO L225 Difference]: With dead ends: 43219 [2018-10-13 13:48:14,924 INFO L226 Difference]: Without dead ends: 43219 [2018-10-13 13:48:14,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=619, Invalid=1931, Unknown=0, NotChecked=0, Total=2550 [2018-10-13 13:48:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43219 states. [2018-10-13 13:48:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43219 to 33163. [2018-10-13 13:48:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33163 states. [2018-10-13 13:48:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33163 states to 33163 states and 295730 transitions. [2018-10-13 13:48:15,846 INFO L78 Accepts]: Start accepts. Automaton has 33163 states and 295730 transitions. Word has length 46 [2018-10-13 13:48:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:15,846 INFO L481 AbstractCegarLoop]: Abstraction has 33163 states and 295730 transitions. [2018-10-13 13:48:15,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:48:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 33163 states and 295730 transitions. [2018-10-13 13:48:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:48:15,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:15,888 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] [2018-10-13 13:48:15,888 INFO L424 AbstractCegarLoop]: === Iteration 200 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:15,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash -498291473, now seen corresponding path program 1 times [2018-10-13 13:48:15,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:48:17,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:48:17,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-13 13:48:17,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-13 13:48:17,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-13 13:48:17,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2018-10-13 13:48:17,037 INFO L87 Difference]: Start difference. First operand 33163 states and 295730 transitions. Second operand 28 states. [2018-10-13 13:48:18,007 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-10-13 13:48:18,474 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-13 13:48:19,369 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-10-13 13:48:19,982 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-13 13:48:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:20,768 INFO L93 Difference]: Finished difference Result 48051 states and 425077 transitions. [2018-10-13 13:48:20,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-13 13:48:20,768 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2018-10-13 13:48:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:20,981 INFO L225 Difference]: With dead ends: 48051 [2018-10-13 13:48:20,981 INFO L226 Difference]: Without dead ends: 48051 [2018-10-13 13:48:20,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:48:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48051 states. [2018-10-13 13:48:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48051 to 46851. [2018-10-13 13:48:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46851 states. [2018-10-13 13:48:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46851 states to 46851 states and 418922 transitions. [2018-10-13 13:48:22,147 INFO L78 Accepts]: Start accepts. Automaton has 46851 states and 418922 transitions. Word has length 46 [2018-10-13 13:48:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:22,147 INFO L481 AbstractCegarLoop]: Abstraction has 46851 states and 418922 transitions. [2018-10-13 13:48:22,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-13 13:48:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 46851 states and 418922 transitions. [2018-10-13 13:48:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:48:22,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:22,196 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] [2018-10-13 13:48:22,196 INFO L424 AbstractCegarLoop]: === Iteration 201 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:22,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 559289319, now seen corresponding path program 1 times [2018-10-13 13:48:22,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:23,187 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 13:48:23,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:48:23,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:48:23,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:48:23,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:48:23,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:48:23,188 INFO L87 Difference]: Start difference. First operand 46851 states and 418922 transitions. Second operand 26 states. [2018-10-13 13:48:23,889 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2018-10-13 13:48:24,403 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2018-10-13 13:48:24,551 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-10-13 13:48:24,878 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2018-10-13 13:48:25,219 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2018-10-13 13:48:25,772 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-10-13 13:48:25,919 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-13 13:48:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:27,740 INFO L93 Difference]: Finished difference Result 97326 states and 867435 transitions. [2018-10-13 13:48:27,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:48:27,740 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2018-10-13 13:48:27,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:28,157 INFO L225 Difference]: With dead ends: 97326 [2018-10-13 13:48:28,157 INFO L226 Difference]: Without dead ends: 97326 [2018-10-13 13:48:28,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=569, Invalid=1501, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:48:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97326 states. [2018-10-13 13:48:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97326 to 95125. [2018-10-13 13:48:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95125 states. [2018-10-13 13:48:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95125 states to 95125 states and 853388 transitions. [2018-10-13 13:48:30,623 INFO L78 Accepts]: Start accepts. Automaton has 95125 states and 853388 transitions. Word has length 46 [2018-10-13 13:48:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:30,623 INFO L481 AbstractCegarLoop]: Abstraction has 95125 states and 853388 transitions. [2018-10-13 13:48:30,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:48:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 95125 states and 853388 transitions. [2018-10-13 13:48:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:48:30,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:30,679 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] [2018-10-13 13:48:30,679 INFO L424 AbstractCegarLoop]: === Iteration 202 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:30,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:30,679 INFO L82 PathProgramCache]: Analyzing trace with hash 494645191, now seen corresponding path program 1 times [2018-10-13 13:48:30,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:31,642 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 13:48:31,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:48:31,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-13 13:48:31,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:48:31,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:48:31,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:48:31,643 INFO L87 Difference]: Start difference. First operand 95125 states and 853388 transitions. Second operand 25 states. [2018-10-13 13:48:35,433 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2018-10-13 13:48:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:36,021 INFO L93 Difference]: Finished difference Result 96634 states and 862229 transitions. [2018-10-13 13:48:36,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-13 13:48:36,021 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-13 13:48:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:36,490 INFO L225 Difference]: With dead ends: 96634 [2018-10-13 13:48:36,491 INFO L226 Difference]: Without dead ends: 96634 [2018-10-13 13:48:36,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=685, Invalid=1571, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:48:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96634 states. [2018-10-13 13:48:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96634 to 95771. [2018-10-13 13:48:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95771 states. [2018-10-13 13:48:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95771 states to 95771 states and 859202 transitions. [2018-10-13 13:48:49,834 INFO L78 Accepts]: Start accepts. Automaton has 95771 states and 859202 transitions. Word has length 46 [2018-10-13 13:48:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:49,834 INFO L481 AbstractCegarLoop]: Abstraction has 95771 states and 859202 transitions. [2018-10-13 13:48:49,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:48:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 95771 states and 859202 transitions. [2018-10-13 13:48:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:48:49,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:49,893 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 13:48:49,893 INFO L424 AbstractCegarLoop]: === Iteration 203 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:49,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:49,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2081458176, now seen corresponding path program 1 times [2018-10-13 13:48:49,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:50,465 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 13:48:50,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:48:50,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-13 13:48:50,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-13 13:48:50,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-13 13:48:50,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-10-13 13:48:50,466 INFO L87 Difference]: Start difference. First operand 95771 states and 859202 transitions. Second operand 18 states. [2018-10-13 13:48:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:48:52,446 INFO L93 Difference]: Finished difference Result 96410 states and 863284 transitions. [2018-10-13 13:48:52,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-13 13:48:52,446 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-10-13 13:48:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:48:52,915 INFO L225 Difference]: With dead ends: 96410 [2018-10-13 13:48:52,915 INFO L226 Difference]: Without dead ends: 96410 [2018-10-13 13:48:52,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:48:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96410 states. [2018-10-13 13:48:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96410 to 95963. [2018-10-13 13:48:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95963 states. [2018-10-13 13:48:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95963 states to 95963 states and 860929 transitions. [2018-10-13 13:48:55,306 INFO L78 Accepts]: Start accepts. Automaton has 95963 states and 860929 transitions. Word has length 46 [2018-10-13 13:48:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:48:55,306 INFO L481 AbstractCegarLoop]: Abstraction has 95963 states and 860929 transitions. [2018-10-13 13:48:55,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-13 13:48:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 95963 states and 860929 transitions. [2018-10-13 13:48:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:48:55,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:48:55,363 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 13:48:55,363 INFO L424 AbstractCegarLoop]: === Iteration 204 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:48:55,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:48:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash -613071266, now seen corresponding path program 1 times [2018-10-13 13:48:55,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:48:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:48:55,766 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2018-10-13 13:48:56,546 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-13 13:48:56,704 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-13 13:48:57,180 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 72 [2018-10-13 13:48:57,750 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 75 [2018-10-13 13:48:58,250 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 69 [2018-10-13 13:48:58,717 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 56 [2018-10-13 13:48:59,140 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 51 [2018-10-13 13:48:59,511 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 48 [2018-10-13 13:48:59,945 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 44 [2018-10-13 13:49:00,211 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 40 [2018-10-13 13:49:00,368 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2018-10-13 13:49:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:49:00,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:49:00,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2018-10-13 13:49:00,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-13 13:49:00,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-13 13:49:00,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:49:00,623 INFO L87 Difference]: Start difference. First operand 95963 states and 860929 transitions. Second operand 30 states. [2018-10-13 13:49:01,154 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-13 13:49:01,381 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-13 13:49:01,601 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-13 13:49:01,980 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2018-10-13 13:49:02,447 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2018-10-13 13:49:02,837 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2018-10-13 13:49:03,223 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2018-10-13 13:49:03,596 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2018-10-13 13:49:03,950 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2018-10-13 13:49:04,294 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2018-10-13 13:49:04,615 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2018-10-13 13:49:04,966 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2018-10-13 13:49:05,217 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2018-10-13 13:49:05,552 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2018-10-13 13:49:05,870 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 66 [2018-10-13 13:49:06,292 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2018-10-13 13:49:06,694 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2018-10-13 13:49:07,095 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2018-10-13 13:49:07,498 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2018-10-13 13:49:08,066 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2018-10-13 13:49:08,437 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2018-10-13 13:49:08,835 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2018-10-13 13:49:09,193 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2018-10-13 13:49:09,661 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2018-10-13 13:49:10,225 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2018-10-13 13:49:10,621 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 82 [2018-10-13 13:49:13,720 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-10-13 13:49:14,120 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2018-10-13 13:49:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:49:15,277 INFO L93 Difference]: Finished difference Result 115543 states and 1028817 transitions. [2018-10-13 13:49:15,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-13 13:49:15,278 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2018-10-13 13:49:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:49:15,833 INFO L225 Difference]: With dead ends: 115543 [2018-10-13 13:49:15,834 INFO L226 Difference]: Without dead ends: 115543 [2018-10-13 13:49:15,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1141, Invalid=2519, Unknown=0, NotChecked=0, Total=3660 [2018-10-13 13:49:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115543 states. [2018-10-13 13:49:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115543 to 95456. [2018-10-13 13:49:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95456 states. [2018-10-13 13:49:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95456 states to 95456 states and 856311 transitions. [2018-10-13 13:49:18,383 INFO L78 Accepts]: Start accepts. Automaton has 95456 states and 856311 transitions. Word has length 46 [2018-10-13 13:49:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:49:18,383 INFO L481 AbstractCegarLoop]: Abstraction has 95456 states and 856311 transitions. [2018-10-13 13:49:18,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-13 13:49:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 95456 states and 856311 transitions. [2018-10-13 13:49:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:49:18,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:49:18,445 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 13:49:18,445 INFO L424 AbstractCegarLoop]: === Iteration 205 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:49:18,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:49:18,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1763822482, now seen corresponding path program 1 times [2018-10-13 13:49:18,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:49:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:49:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:49:19,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:49:19,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-13 13:49:19,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:49:19,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:49:19,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:49:19,815 INFO L87 Difference]: Start difference. First operand 95456 states and 856311 transitions. Second operand 25 states. [2018-10-13 13:49:20,414 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-13 13:49:20,670 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2018-10-13 13:49:20,977 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2018-10-13 13:49:21,179 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2018-10-13 13:49:21,361 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2018-10-13 13:49:21,579 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2018-10-13 13:49:21,818 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-13 13:49:22,096 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2018-10-13 13:49:22,350 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2018-10-13 13:49:22,759 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-13 13:49:23,473 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-13 13:49:23,707 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2018-10-13 13:49:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:49:24,787 INFO L93 Difference]: Finished difference Result 98460 states and 879273 transitions. [2018-10-13 13:49:24,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:49:24,788 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-13 13:49:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:49:25,272 INFO L225 Difference]: With dead ends: 98460 [2018-10-13 13:49:25,272 INFO L226 Difference]: Without dead ends: 98460 [2018-10-13 13:49:25,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=504, Invalid=1302, Unknown=0, NotChecked=0, Total=1806 [2018-10-13 13:49:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98460 states. [2018-10-13 13:49:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98460 to 96285. [2018-10-13 13:49:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96285 states. [2018-10-13 13:49:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96285 states to 96285 states and 863733 transitions. [2018-10-13 13:49:29,781 INFO L78 Accepts]: Start accepts. Automaton has 96285 states and 863733 transitions. Word has length 46 [2018-10-13 13:49:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:49:29,781 INFO L481 AbstractCegarLoop]: Abstraction has 96285 states and 863733 transitions. [2018-10-13 13:49:29,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:49:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 96285 states and 863733 transitions. [2018-10-13 13:49:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:49:29,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:49:29,847 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] [2018-10-13 13:49:29,847 INFO L424 AbstractCegarLoop]: === Iteration 206 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:49:29,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:49:29,848 INFO L82 PathProgramCache]: Analyzing trace with hash -754313657, now seen corresponding path program 2 times [2018-10-13 13:49:29,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:49:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:49:30,105 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-13 13:49:31,005 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 13:49:31,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:49:31,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-13 13:49:31,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:49:31,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:49:31,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:49:31,006 INFO L87 Difference]: Start difference. First operand 96285 states and 863733 transitions. Second operand 25 states. [2018-10-13 13:49:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:49:35,490 INFO L93 Difference]: Finished difference Result 99322 states and 886235 transitions. [2018-10-13 13:49:35,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-13 13:49:35,491 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-13 13:49:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:49:35,979 INFO L225 Difference]: With dead ends: 99322 [2018-10-13 13:49:35,979 INFO L226 Difference]: Without dead ends: 99322 [2018-10-13 13:49:35,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=648, Invalid=1514, Unknown=0, NotChecked=0, Total=2162 [2018-10-13 13:49:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99322 states. [2018-10-13 13:49:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99322 to 96573. [2018-10-13 13:49:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96573 states. [2018-10-13 13:49:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96573 states to 96573 states and 866325 transitions. [2018-10-13 13:49:41,415 INFO L78 Accepts]: Start accepts. Automaton has 96573 states and 866325 transitions. Word has length 46 [2018-10-13 13:49:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:49:41,415 INFO L481 AbstractCegarLoop]: Abstraction has 96573 states and 866325 transitions. [2018-10-13 13:49:41,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:49:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 96573 states and 866325 transitions. [2018-10-13 13:49:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:49:41,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:49:41,483 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 13:49:41,483 INFO L424 AbstractCegarLoop]: === Iteration 207 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:49:41,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:49:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash -820539457, now seen corresponding path program 1 times [2018-10-13 13:49:41,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:49:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:49:41,722 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 13:49:41,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-13 13:49:41,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-13 13:49:41,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-13 13:49:41,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-13 13:49:41,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-10-13 13:49:41,723 INFO L87 Difference]: Start difference. First operand 96573 states and 866325 transitions. Second operand 15 states. [2018-10-13 13:49:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:49:43,744 INFO L93 Difference]: Finished difference Result 98087 states and 878195 transitions. [2018-10-13 13:49:43,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-13 13:49:43,745 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-10-13 13:49:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:49:44,163 INFO L225 Difference]: With dead ends: 98087 [2018-10-13 13:49:44,164 INFO L226 Difference]: Without dead ends: 98087 [2018-10-13 13:49:44,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:49:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98087 states. [2018-10-13 13:49:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98087 to 97466. [2018-10-13 13:49:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97466 states. [2018-10-13 13:49:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97466 states to 97466 states and 874051 transitions. [2018-10-13 13:49:46,548 INFO L78 Accepts]: Start accepts. Automaton has 97466 states and 874051 transitions. Word has length 46 [2018-10-13 13:49:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:49:46,548 INFO L481 AbstractCegarLoop]: Abstraction has 97466 states and 874051 transitions. [2018-10-13 13:49:46,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-13 13:49:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 97466 states and 874051 transitions. [2018-10-13 13:49:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:49:46,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:49:46,617 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:49:46,617 INFO L424 AbstractCegarLoop]: === Iteration 208 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:49:46,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:49:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash 618737298, now seen corresponding path program 1 times [2018-10-13 13:49:46,617 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:49:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:49:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:49:47,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:49:47,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:49:47,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:49:47,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:49:47,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:49:47,889 INFO L87 Difference]: Start difference. First operand 97466 states and 874051 transitions. Second operand 32 states. [2018-10-13 13:49:51,892 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-13 13:49:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:49:53,947 INFO L93 Difference]: Finished difference Result 108453 states and 971366 transitions. [2018-10-13 13:49:53,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-13 13:49:53,947 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 46 [2018-10-13 13:49:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:49:54,422 INFO L225 Difference]: With dead ends: 108453 [2018-10-13 13:49:54,423 INFO L226 Difference]: Without dead ends: 108453 [2018-10-13 13:49:54,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=550, Invalid=1900, Unknown=0, NotChecked=0, Total=2450 [2018-10-13 13:49:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108453 states. [2018-10-13 13:49:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108453 to 98180. [2018-10-13 13:49:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98180 states. [2018-10-13 13:49:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98180 states to 98180 states and 880477 transitions. [2018-10-13 13:49:57,310 INFO L78 Accepts]: Start accepts. Automaton has 98180 states and 880477 transitions. Word has length 46 [2018-10-13 13:49:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:49:57,310 INFO L481 AbstractCegarLoop]: Abstraction has 98180 states and 880477 transitions. [2018-10-13 13:49:57,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:49:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 98180 states and 880477 transitions. [2018-10-13 13:49:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:49:57,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:49:57,388 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:49:57,388 INFO L424 AbstractCegarLoop]: === Iteration 209 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:49:57,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:49:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash -770922746, now seen corresponding path program 1 times [2018-10-13 13:49:57,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:49:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:49:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:49:58,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:49:58,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:49:58,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:49:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:49:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:49:58,213 INFO L87 Difference]: Start difference. First operand 98180 states and 880477 transitions. Second operand 31 states. [2018-10-13 13:50:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:50:06,688 INFO L93 Difference]: Finished difference Result 98293 states and 880591 transitions. [2018-10-13 13:50:06,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:50:06,689 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 46 [2018-10-13 13:50:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:50:07,141 INFO L225 Difference]: With dead ends: 98293 [2018-10-13 13:50:07,141 INFO L226 Difference]: Without dead ends: 98293 [2018-10-13 13:50:07,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2018-10-13 13:50:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98293 states. [2018-10-13 13:50:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98293 to 97298. [2018-10-13 13:50:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97298 states. [2018-10-13 13:50:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97298 states to 97298 states and 872632 transitions. [2018-10-13 13:50:09,559 INFO L78 Accepts]: Start accepts. Automaton has 97298 states and 872632 transitions. Word has length 46 [2018-10-13 13:50:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:50:09,559 INFO L481 AbstractCegarLoop]: Abstraction has 97298 states and 872632 transitions. [2018-10-13 13:50:09,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:50:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 97298 states and 872632 transitions. [2018-10-13 13:50:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:50:09,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:50:09,626 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] [2018-10-13 13:50:09,627 INFO L424 AbstractCegarLoop]: === Iteration 210 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:50:09,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:50:09,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1720192553, now seen corresponding path program 1 times [2018-10-13 13:50:09,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:50:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:50:10,286 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-13 13:50:10,434 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2018-10-13 13:50:10,599 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-10-13 13:50:10,762 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2018-10-13 13:50:10,927 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2018-10-13 13:50:11,086 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2018-10-13 13:50:11,236 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2018-10-13 13:50:11,726 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 22 [2018-10-13 13:50:11,870 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 20 [2018-10-13 13:50:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:50:12,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:50:12,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-13 13:50:12,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-13 13:50:12,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-13 13:50:12,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:50:12,081 INFO L87 Difference]: Start difference. First operand 97298 states and 872632 transitions. Second operand 29 states. [2018-10-13 13:50:12,728 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2018-10-13 13:50:12,915 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2018-10-13 13:50:13,206 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2018-10-13 13:50:13,554 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2018-10-13 13:50:13,748 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-13 13:50:13,995 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2018-10-13 13:50:15,749 WARN L178 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-13 13:50:16,420 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2018-10-13 13:50:16,860 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-10-13 13:50:17,305 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2018-10-13 13:50:17,531 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2018-10-13 13:50:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:50:18,748 INFO L93 Difference]: Finished difference Result 101848 states and 908962 transitions. [2018-10-13 13:50:18,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-13 13:50:18,749 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 46 [2018-10-13 13:50:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:50:19,249 INFO L225 Difference]: With dead ends: 101848 [2018-10-13 13:50:19,249 INFO L226 Difference]: Without dead ends: 101848 [2018-10-13 13:50:19,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=630, Invalid=1626, Unknown=0, NotChecked=0, Total=2256 [2018-10-13 13:50:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101848 states. [2018-10-13 13:50:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101848 to 100306. [2018-10-13 13:50:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100306 states. [2018-10-13 13:50:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100306 states to 100306 states and 899673 transitions. [2018-10-13 13:50:22,149 INFO L78 Accepts]: Start accepts. Automaton has 100306 states and 899673 transitions. Word has length 46 [2018-10-13 13:50:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:50:22,149 INFO L481 AbstractCegarLoop]: Abstraction has 100306 states and 899673 transitions. [2018-10-13 13:50:22,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-13 13:50:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 100306 states and 899673 transitions. [2018-10-13 13:50:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:50:22,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:50:22,227 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] [2018-10-13 13:50:22,227 INFO L424 AbstractCegarLoop]: === Iteration 211 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:50:22,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:50:22,227 INFO L82 PathProgramCache]: Analyzing trace with hash 394969031, now seen corresponding path program 1 times [2018-10-13 13:50:22,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:50:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:50:25,303 WARN L178 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2018-10-13 13:50:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-13 13:50:25,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:50:25,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-13 13:50:25,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-13 13:50:25,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-13 13:50:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2018-10-13 13:50:25,452 INFO L87 Difference]: Start difference. First operand 100306 states and 899673 transitions. Second operand 26 states. [2018-10-13 13:50:26,426 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-13 13:50:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:50:28,471 INFO L93 Difference]: Finished difference Result 101909 states and 911980 transitions. [2018-10-13 13:50:28,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:50:28,471 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2018-10-13 13:50:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:50:28,912 INFO L225 Difference]: With dead ends: 101909 [2018-10-13 13:50:28,912 INFO L226 Difference]: Without dead ends: 101909 [2018-10-13 13:50:28,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=451, Invalid=1271, Unknown=0, NotChecked=0, Total=1722 [2018-10-13 13:50:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101909 states. [2018-10-13 13:50:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101909 to 100272. [2018-10-13 13:50:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100272 states. [2018-10-13 13:50:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100272 states to 100272 states and 899414 transitions. [2018-10-13 13:50:31,481 INFO L78 Accepts]: Start accepts. Automaton has 100272 states and 899414 transitions. Word has length 46 [2018-10-13 13:50:31,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:50:31,481 INFO L481 AbstractCegarLoop]: Abstraction has 100272 states and 899414 transitions. [2018-10-13 13:50:31,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-13 13:50:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 100272 states and 899414 transitions. [2018-10-13 13:50:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:50:31,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:50:31,550 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] [2018-10-13 13:50:31,550 INFO L424 AbstractCegarLoop]: === Iteration 212 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:50:31,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:50:31,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1359182917, now seen corresponding path program 1 times [2018-10-13 13:50:31,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:50:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:50:39,929 WARN L178 SmtUtils]: Spent 7.88 s on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2018-10-13 13:50:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:50:41,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:50:41,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-13 13:50:41,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-13 13:50:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-13 13:50:41,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2018-10-13 13:50:41,170 INFO L87 Difference]: Start difference. First operand 100272 states and 899414 transitions. Second operand 31 states. [2018-10-13 13:50:42,481 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-10-13 13:50:42,714 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-13 13:50:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:50:44,393 INFO L93 Difference]: Finished difference Result 101292 states and 907060 transitions. [2018-10-13 13:50:44,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:50:44,393 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 46 [2018-10-13 13:50:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:50:44,836 INFO L225 Difference]: With dead ends: 101292 [2018-10-13 13:50:44,836 INFO L226 Difference]: Without dead ends: 101292 [2018-10-13 13:50:44,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2018-10-13 13:50:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101292 states. [2018-10-13 13:50:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101292 to 99202. [2018-10-13 13:50:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99202 states. [2018-10-13 13:50:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99202 states to 99202 states and 889847 transitions. [2018-10-13 13:50:49,164 INFO L78 Accepts]: Start accepts. Automaton has 99202 states and 889847 transitions. Word has length 46 [2018-10-13 13:50:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:50:49,164 INFO L481 AbstractCegarLoop]: Abstraction has 99202 states and 889847 transitions. [2018-10-13 13:50:49,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-13 13:50:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 99202 states and 889847 transitions. [2018-10-13 13:50:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:50:49,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:50:49,235 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 13:50:49,235 INFO L424 AbstractCegarLoop]: === Iteration 213 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:50:49,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:50:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash 794716486, now seen corresponding path program 1 times [2018-10-13 13:50:49,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:50:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:50:49,962 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 13:50:49,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:50:49,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-13 13:50:49,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-13 13:50:49,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-13 13:50:49,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2018-10-13 13:50:49,962 INFO L87 Difference]: Start difference. First operand 99202 states and 889847 transitions. Second operand 23 states. [2018-10-13 13:50:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:50:53,030 INFO L93 Difference]: Finished difference Result 103840 states and 929594 transitions. [2018-10-13 13:50:53,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-13 13:50:53,030 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2018-10-13 13:50:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:50:53,482 INFO L225 Difference]: With dead ends: 103840 [2018-10-13 13:50:53,482 INFO L226 Difference]: Without dead ends: 103840 [2018-10-13 13:50:53,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=390, Invalid=1016, Unknown=0, NotChecked=0, Total=1406 [2018-10-13 13:50:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103840 states. [2018-10-13 13:50:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103840 to 103004. [2018-10-13 13:50:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103004 states. [2018-10-13 13:50:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103004 states to 103004 states and 924065 transitions. [2018-10-13 13:50:56,080 INFO L78 Accepts]: Start accepts. Automaton has 103004 states and 924065 transitions. Word has length 46 [2018-10-13 13:50:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:50:56,080 INFO L481 AbstractCegarLoop]: Abstraction has 103004 states and 924065 transitions. [2018-10-13 13:50:56,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-13 13:50:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 103004 states and 924065 transitions. [2018-10-13 13:50:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:50:56,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:50:56,151 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] [2018-10-13 13:50:56,151 INFO L424 AbstractCegarLoop]: === Iteration 214 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:50:56,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:50:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1982045551, now seen corresponding path program 2 times [2018-10-13 13:50:56,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:50:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:50:56,921 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 13:50:56,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:50:56,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-13 13:50:56,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-13 13:50:56,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-13 13:50:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-10-13 13:50:56,922 INFO L87 Difference]: Start difference. First operand 103004 states and 924065 transitions. Second operand 25 states. [2018-10-13 13:50:58,245 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-10-13 13:51:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:51:00,898 INFO L93 Difference]: Finished difference Result 130989 states and 1171535 transitions. [2018-10-13 13:51:00,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:51:00,898 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-13 13:51:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:51:01,570 INFO L225 Difference]: With dead ends: 130989 [2018-10-13 13:51:01,570 INFO L226 Difference]: Without dead ends: 130989 [2018-10-13 13:51:01,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:51:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130989 states. [2018-10-13 13:51:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130989 to 128548. [2018-10-13 13:51:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128548 states. [2018-10-13 13:51:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128548 states to 128548 states and 1153961 transitions. [2018-10-13 13:51:08,055 INFO L78 Accepts]: Start accepts. Automaton has 128548 states and 1153961 transitions. Word has length 46 [2018-10-13 13:51:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:51:08,055 INFO L481 AbstractCegarLoop]: Abstraction has 128548 states and 1153961 transitions. [2018-10-13 13:51:08,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-13 13:51:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 128548 states and 1153961 transitions. [2018-10-13 13:51:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:51:08,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:51:08,136 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 13:51:08,136 INFO L424 AbstractCegarLoop]: === Iteration 215 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:51:08,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:51:08,137 INFO L82 PathProgramCache]: Analyzing trace with hash -519226116, now seen corresponding path program 1 times [2018-10-13 13:51:08,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:51:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:51:08,546 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 13:51:08,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:51:08,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-13 13:51:08,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-13 13:51:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-13 13:51:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-13 13:51:08,547 INFO L87 Difference]: Start difference. First operand 128548 states and 1153961 transitions. Second operand 20 states. [2018-10-13 13:51:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:51:10,629 INFO L93 Difference]: Finished difference Result 128688 states and 1154262 transitions. [2018-10-13 13:51:10,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-13 13:51:10,630 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2018-10-13 13:51:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:51:11,282 INFO L225 Difference]: With dead ends: 128688 [2018-10-13 13:51:11,282 INFO L226 Difference]: Without dead ends: 128688 [2018-10-13 13:51:11,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2018-10-13 13:51:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128688 states. [2018-10-13 13:51:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128688 to 128548. [2018-10-13 13:51:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128548 states. [2018-10-13 13:51:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128548 states to 128548 states and 1153961 transitions. [2018-10-13 13:51:27,449 INFO L78 Accepts]: Start accepts. Automaton has 128548 states and 1153961 transitions. Word has length 46 [2018-10-13 13:51:27,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:51:27,449 INFO L481 AbstractCegarLoop]: Abstraction has 128548 states and 1153961 transitions. [2018-10-13 13:51:27,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-13 13:51:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 128548 states and 1153961 transitions. [2018-10-13 13:51:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:51:27,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:51:27,530 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:51:27,530 INFO L424 AbstractCegarLoop]: === Iteration 216 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:51:27,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:51:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2114392510, now seen corresponding path program 1 times [2018-10-13 13:51:27,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:51:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:51:28,547 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-13 13:51:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-13 13:51:29,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:51:29,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:51:29,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:51:29,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:51:29,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:51:29,646 INFO L87 Difference]: Start difference. First operand 128548 states and 1153961 transitions. Second operand 32 states. [2018-10-13 13:51:30,569 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-13 13:51:30,769 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-13 13:51:31,039 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-13 13:51:31,193 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-13 13:51:31,444 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-13 13:51:31,633 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2018-10-13 13:51:31,825 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-13 13:51:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:51:34,046 INFO L93 Difference]: Finished difference Result 144242 states and 1291614 transitions. [2018-10-13 13:51:34,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-13 13:51:34,046 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 46 [2018-10-13 13:51:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:51:34,705 INFO L225 Difference]: With dead ends: 144242 [2018-10-13 13:51:34,705 INFO L226 Difference]: Without dead ends: 144242 [2018-10-13 13:51:34,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=560, Invalid=1792, Unknown=0, NotChecked=0, Total=2352 [2018-10-13 13:51:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144242 states. [2018-10-13 13:51:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144242 to 133212. [2018-10-13 13:51:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133212 states. [2018-10-13 13:51:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133212 states to 133212 states and 1195968 transitions. [2018-10-13 13:51:39,601 INFO L78 Accepts]: Start accepts. Automaton has 133212 states and 1195968 transitions. Word has length 46 [2018-10-13 13:51:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:51:39,601 INFO L481 AbstractCegarLoop]: Abstraction has 133212 states and 1195968 transitions. [2018-10-13 13:51:39,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-13 13:51:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 133212 states and 1195968 transitions. [2018-10-13 13:51:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:51:39,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:51:39,680 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] [2018-10-13 13:51:39,680 INFO L424 AbstractCegarLoop]: === Iteration 217 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:51:39,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:51:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1891564921, now seen corresponding path program 1 times [2018-10-13 13:51:39,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:51:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:51:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-13 13:51:40,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:51:40,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-13 13:51:40,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-13 13:51:40,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-13 13:51:40,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2018-10-13 13:51:40,567 INFO L87 Difference]: Start difference. First operand 133212 states and 1195968 transitions. Second operand 27 states. [2018-10-13 13:51:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:51:43,375 INFO L93 Difference]: Finished difference Result 135430 states and 1214340 transitions. [2018-10-13 13:51:43,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:51:43,376 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2018-10-13 13:51:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:51:44,065 INFO L225 Difference]: With dead ends: 135430 [2018-10-13 13:51:44,066 INFO L226 Difference]: Without dead ends: 135430 [2018-10-13 13:51:44,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2018-10-13 13:51:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135430 states. [2018-10-13 13:51:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135430 to 135230. [2018-10-13 13:51:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135230 states. [2018-10-13 13:51:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135230 states to 135230 states and 1214130 transitions. [2018-10-13 13:51:50,061 INFO L78 Accepts]: Start accepts. Automaton has 135230 states and 1214130 transitions. Word has length 46 [2018-10-13 13:51:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:51:50,061 INFO L481 AbstractCegarLoop]: Abstraction has 135230 states and 1214130 transitions. [2018-10-13 13:51:50,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-13 13:51:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 135230 states and 1214130 transitions. [2018-10-13 13:51:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:51:50,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:51:50,141 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 13:51:50,141 INFO L424 AbstractCegarLoop]: === Iteration 218 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:51:50,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:51:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash 688184728, now seen corresponding path program 1 times [2018-10-13 13:51:50,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:51:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:51:50,489 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2018-10-13 13:51:50,712 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2018-10-13 13:51:50,851 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2018-10-13 13:51:51,033 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2018-10-13 13:51:51,206 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2018-10-13 13:51:51,377 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2018-10-13 13:51:51,803 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 13:51:51,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:51:51,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-13 13:51:51,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-13 13:51:51,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-13 13:51:51,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-10-13 13:51:51,803 INFO L87 Difference]: Start difference. First operand 135230 states and 1214130 transitions. Second operand 20 states. [2018-10-13 13:51:52,674 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2018-10-13 13:51:53,794 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2018-10-13 13:51:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:51:57,263 INFO L93 Difference]: Finished difference Result 135907 states and 1217265 transitions. [2018-10-13 13:51:57,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-13 13:51:57,263 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2018-10-13 13:51:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:51:57,933 INFO L225 Difference]: With dead ends: 135907 [2018-10-13 13:51:57,933 INFO L226 Difference]: Without dead ends: 135907 [2018-10-13 13:51:57,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=311, Invalid=745, Unknown=0, NotChecked=0, Total=1056 [2018-10-13 13:51:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135907 states. [2018-10-13 13:52:00,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135907 to 135264. [2018-10-13 13:52:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135264 states. [2018-10-13 13:52:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135264 states to 135264 states and 1214436 transitions. [2018-10-13 13:52:01,727 INFO L78 Accepts]: Start accepts. Automaton has 135264 states and 1214436 transitions. Word has length 46 [2018-10-13 13:52:01,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:52:01,728 INFO L481 AbstractCegarLoop]: Abstraction has 135264 states and 1214436 transitions. [2018-10-13 13:52:01,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-13 13:52:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 135264 states and 1214436 transitions. [2018-10-13 13:52:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:52:01,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:52:01,810 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 13:52:01,810 INFO L424 AbstractCegarLoop]: === Iteration 219 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:52:01,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:52:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1305280136, now seen corresponding path program 1 times [2018-10-13 13:52:01,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:52:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:52:02,186 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 13:52:02,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:52:02,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-13 13:52:02,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-13 13:52:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-13 13:52:02,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-10-13 13:52:02,187 INFO L87 Difference]: Start difference. First operand 135264 states and 1214436 transitions. Second operand 20 states. [2018-10-13 13:52:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-13 13:52:08,968 INFO L93 Difference]: Finished difference Result 385851 states and 3465761 transitions. [2018-10-13 13:52:08,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-13 13:52:08,969 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2018-10-13 13:52:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-13 13:52:14,248 INFO L225 Difference]: With dead ends: 385851 [2018-10-13 13:52:14,248 INFO L226 Difference]: Without dead ends: 385851 [2018-10-13 13:52:14,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=266, Invalid=604, Unknown=0, NotChecked=0, Total=870 [2018-10-13 13:52:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385851 states. [2018-10-13 13:52:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385851 to 385374. [2018-10-13 13:52:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385374 states. [2018-10-13 13:52:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385374 states to 385374 states and 3465194 transitions. [2018-10-13 13:52:40,797 INFO L78 Accepts]: Start accepts. Automaton has 385374 states and 3465194 transitions. Word has length 46 [2018-10-13 13:52:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-13 13:52:40,797 INFO L481 AbstractCegarLoop]: Abstraction has 385374 states and 3465194 transitions. [2018-10-13 13:52:40,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-13 13:52:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 385374 states and 3465194 transitions. [2018-10-13 13:52:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-13 13:52:40,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-13 13:52:40,946 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-13 13:52:40,946 INFO L424 AbstractCegarLoop]: === Iteration 220 === [mainErr10ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr14ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT, mainErr13ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr12ASSERT_VIOLATIONASSERT, mainErr15ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT]=== [2018-10-13 13:52:40,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-13 13:52:40,947 INFO L82 PathProgramCache]: Analyzing trace with hash -109655882, now seen corresponding path program 1 times [2018-10-13 13:52:40,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-13 13:52:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-13 13:52:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-13 13:52:42,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-13 13:52:42,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-13 13:52:42,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-13 13:52:42,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-13 13:52:42,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2018-10-13 13:52:42,591 INFO L87 Difference]: Start difference. First operand 385374 states and 3465194 transitions. Second operand 32 states. [2018-10-13 13:52:43,822 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-13 13:52:44,102 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-13 13:52:44,238 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-13 13:52:44,396 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-13 13:52:44,704 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65