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-poc03-12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9b25614 [2018-10-05 09:38:10,390 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-05 09:38:10,392 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-05 09:38:10,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-05 09:38:10,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-05 09:38:10,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-05 09:38:10,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-05 09:38:10,410 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-05 09:38:10,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-05 09:38:10,413 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-05 09:38:10,421 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-05 09:38:10,421 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-05 09:38:10,422 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-05 09:38:10,423 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-05 09:38:10,427 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-05 09:38:10,428 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-05 09:38:10,429 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-05 09:38:10,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-05 09:38:10,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-05 09:38:10,439 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-05 09:38:10,440 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-05 09:38:10,444 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-05 09:38:10,449 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-05 09:38:10,449 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-05 09:38:10,450 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-05 09:38:10,450 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-05 09:38:10,451 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-05 09:38:10,452 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-05 09:38:10,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-05 09:38:10,454 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-05 09:38:10,454 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-05 09:38:10,456 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-05 09:38:10,456 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-05 09:38:10,456 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-05 09:38:10,457 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-05 09:38:10,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-05 09:38:10,460 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-05 09:38:10,476 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-05 09:38:10,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-05 09:38:10,477 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-05 09:38:10,477 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-05 09:38:10,477 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-05 09:38:10,478 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-05 09:38:10,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-05 09:38:10,479 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-05 09:38:10,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-05 09:38:10,480 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-05 09:38:10,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-05 09:38:10,480 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-05 09:38:10,480 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-05 09:38:10,482 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-05 09:38:10,482 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-05 09:38:10,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-05 09:38:10,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-05 09:38:10,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-05 09:38:10,543 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-05 09:38:10,543 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-05 09:38:10,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-12.bpl [2018-10-05 09:38:10,544 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-12.bpl' [2018-10-05 09:38:10,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-05 09:38:10,623 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-05 09:38:10,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-05 09:38:10,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-05 09:38:10,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-05 09:38:10,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/1) ... [2018-10-05 09:38:10,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-05 09:38:10,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-05 09:38:10,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-05 09:38:10,688 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-05 09:38:10,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (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 [2018-10-05 09:38:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-05 09:38:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-05 09:38:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-05 09:38:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-05 09:38:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-10-05 09:38:11,352 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-05 09:38:11,353 INFO L202 PluginConnector]: Adding new model speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 09:38:11 BoogieIcfgContainer [2018-10-05 09:38:11,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-05 09:38:11,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-05 09:38:11,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-05 09:38:11,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-05 09:38:11,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.10 09:38:10" (1/2) ... [2018-10-05 09:38:11,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb4a595 and model type speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 09:38:11, skipping insertion in model container [2018-10-05 09:38:11,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc03-12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 09:38:11" (2/2) ... [2018-10-05 09:38:11,361 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc03-12.bpl [2018-10-05 09:38:11,371 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-05 09:38:11,379 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2018-10-05 09:38:11,422 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-05 09:38:11,422 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-05 09:38:11,423 INFO L382 AbstractCegarLoop]: Hoare is false [2018-10-05 09:38:11,423 INFO L383 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-05 09:38:11,423 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-05 09:38:11,423 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-05 09:38:11,423 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-05 09:38:11,423 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-05 09:38:11,424 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-05 09:38:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-10-05 09:38:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-05 09:38:11,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:11,451 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] [2018-10-05 09:38:11,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:11,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:11,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1460492836, now seen corresponding path program 1 times [2018-10-05 09:38:11,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:12,613 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-05 09:38:12,855 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-10-05 09:38:13,413 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2018-10-05 09:38:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:13,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:38:13,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-10-05 09:38:13,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-05 09:38:13,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-05 09:38:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-10-05 09:38:13,883 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 21 states. [2018-10-05 09:38:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:16,355 INFO L93 Difference]: Finished difference Result 296 states and 415 transitions. [2018-10-05 09:38:16,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:38:16,357 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 26 [2018-10-05 09:38:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:16,374 INFO L225 Difference]: With dead ends: 296 [2018-10-05 09:38:16,374 INFO L226 Difference]: Without dead ends: 274 [2018-10-05 09:38:16,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=308, Invalid=684, Unknown=0, NotChecked=0, Total=992 [2018-10-05 09:38:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-05 09:38:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 52. [2018-10-05 09:38:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-05 09:38:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2018-10-05 09:38:16,430 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 26 [2018-10-05 09:38:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:16,431 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2018-10-05 09:38:16,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-05 09:38:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2018-10-05 09:38:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-05 09:38:16,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:16,432 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] [2018-10-05 09:38:16,433 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:16,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1969362450, now seen corresponding path program 1 times [2018-10-05 09:38:16,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:16,826 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-10-05 09:38:17,774 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-10-05 09:38:17,931 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-10-05 09:38:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:18,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:38:18,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-05 09:38:18,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:38:18,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:38:18,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:38:18,612 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand 24 states. [2018-10-05 09:38:19,214 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2018-10-05 09:38:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:20,262 INFO L93 Difference]: Finished difference Result 228 states and 340 transitions. [2018-10-05 09:38:20,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:38:20,263 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2018-10-05 09:38:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:20,268 INFO L225 Difference]: With dead ends: 228 [2018-10-05 09:38:20,269 INFO L226 Difference]: Without dead ends: 228 [2018-10-05 09:38:20,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=307, Invalid=815, Unknown=0, NotChecked=0, Total=1122 [2018-10-05 09:38:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-05 09:38:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 57. [2018-10-05 09:38:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-05 09:38:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 105 transitions. [2018-10-05 09:38:20,282 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 105 transitions. Word has length 27 [2018-10-05 09:38:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:20,282 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 105 transitions. [2018-10-05 09:38:20,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:38:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 105 transitions. [2018-10-05 09:38:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:20,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:20,284 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] [2018-10-05 09:38:20,284 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:20,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash 920645337, now seen corresponding path program 1 times [2018-10-05 09:38:20,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:20,849 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2018-10-05 09:38:21,161 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2018-10-05 09:38:21,297 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 [2018-10-05 09:38:21,477 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 31 [2018-10-05 09:38:21,640 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2018-10-05 09:38:21,918 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2018-10-05 09:38:22,115 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 22 [2018-10-05 09:38:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:22,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:38:22,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-05 09:38:22,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-05 09:38:22,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-05 09:38:22,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:38:22,472 INFO L87 Difference]: Start difference. First operand 57 states and 105 transitions. Second operand 22 states. [2018-10-05 09:38:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:25,416 INFO L93 Difference]: Finished difference Result 371 states and 626 transitions. [2018-10-05 09:38:25,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:38:25,417 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2018-10-05 09:38:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:25,421 INFO L225 Difference]: With dead ends: 371 [2018-10-05 09:38:25,421 INFO L226 Difference]: Without dead ends: 371 [2018-10-05 09:38:25,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=356, Invalid=904, Unknown=0, NotChecked=0, Total=1260 [2018-10-05 09:38:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-05 09:38:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 63. [2018-10-05 09:38:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-05 09:38:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 147 transitions. [2018-10-05 09:38:25,432 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 147 transitions. Word has length 28 [2018-10-05 09:38:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:25,433 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 147 transitions. [2018-10-05 09:38:25,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-05 09:38:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 147 transitions. [2018-10-05 09:38:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:25,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:25,435 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] [2018-10-05 09:38:25,436 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:25,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:25,436 INFO L82 PathProgramCache]: Analyzing trace with hash 920645833, now seen corresponding path program 1 times [2018-10-05 09:38:25,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:26,294 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2018-10-05 09:38:26,720 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2018-10-05 09:38:26,870 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-05 09:38:27,050 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2018-10-05 09:38:27,241 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2018-10-05 09:38:27,412 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2018-10-05 09:38:27,724 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 38 [2018-10-05 09:38:28,081 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2018-10-05 09:38:28,269 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 27 [2018-10-05 09:38:28,497 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 16 [2018-10-05 09:38:28,992 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 11 [2018-10-05 09:38:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:29,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:38:29,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:38:29,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:38:29,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:38:29,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:38:29,196 INFO L87 Difference]: Start difference. First operand 63 states and 147 transitions. Second operand 26 states. [2018-10-05 09:38:29,810 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 30 [2018-10-05 09:38:30,132 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2018-10-05 09:38:30,341 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2018-10-05 09:38:30,532 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 41 [2018-10-05 09:38:30,740 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2018-10-05 09:38:30,901 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 37 [2018-10-05 09:38:31,147 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2018-10-05 09:38:31,413 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 46 [2018-10-05 09:38:31,649 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 37 [2018-10-05 09:38:31,889 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 33 [2018-10-05 09:38:32,085 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2018-10-05 09:38:32,261 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 41 [2018-10-05 09:38:32,474 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2018-10-05 09:38:32,653 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 39 [2018-10-05 09:38:32,837 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 35 [2018-10-05 09:38:33,054 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2018-10-05 09:38:33,248 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 43 [2018-10-05 09:38:33,591 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2018-10-05 09:38:33,829 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 39 [2018-10-05 09:38:34,109 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-05 09:38:34,439 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 44 [2018-10-05 09:38:34,705 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 35 [2018-10-05 09:38:35,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:35,440 INFO L93 Difference]: Finished difference Result 324 states and 709 transitions. [2018-10-05 09:38:35,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-05 09:38:35,441 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2018-10-05 09:38:35,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:35,445 INFO L225 Difference]: With dead ends: 324 [2018-10-05 09:38:35,445 INFO L226 Difference]: Without dead ends: 324 [2018-10-05 09:38:35,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=851, Invalid=1905, Unknown=0, NotChecked=0, Total=2756 [2018-10-05 09:38:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-05 09:38:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 65. [2018-10-05 09:38:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-05 09:38:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 161 transitions. [2018-10-05 09:38:35,455 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 161 transitions. Word has length 28 [2018-10-05 09:38:35,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:35,455 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 161 transitions. [2018-10-05 09:38:35,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:38:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 161 transitions. [2018-10-05 09:38:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:35,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:35,456 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] [2018-10-05 09:38:35,457 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:35,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:35,457 INFO L82 PathProgramCache]: Analyzing trace with hash 920645957, now seen corresponding path program 1 times [2018-10-05 09:38:35,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:36,768 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 39 [2018-10-05 09:38:37,140 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 46 [2018-10-05 09:38:37,470 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 43 [2018-10-05 09:38:37,792 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 40 [2018-10-05 09:38:38,145 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 37 [2018-10-05 09:38:38,468 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 34 [2018-10-05 09:38:38,733 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 24 [2018-10-05 09:38:38,962 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 21 [2018-10-05 09:38:39,226 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 17 [2018-10-05 09:38:39,372 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2018-10-05 09:38:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:39,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:38:39,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:38:39,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:38:39,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:38:39,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:38:39,498 INFO L87 Difference]: Start difference. First operand 65 states and 161 transitions. Second operand 26 states. [2018-10-05 09:38:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:41,565 INFO L93 Difference]: Finished difference Result 247 states and 467 transitions. [2018-10-05 09:38:41,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:38:41,566 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2018-10-05 09:38:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:41,568 INFO L225 Difference]: With dead ends: 247 [2018-10-05 09:38:41,569 INFO L226 Difference]: Without dead ends: 247 [2018-10-05 09:38:41,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:38:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-05 09:38:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 61. [2018-10-05 09:38:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-05 09:38:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 132 transitions. [2018-10-05 09:38:41,575 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 132 transitions. Word has length 28 [2018-10-05 09:38:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:41,576 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 132 transitions. [2018-10-05 09:38:41,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:38:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 132 transitions. [2018-10-05 09:38:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:41,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:41,577 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] [2018-10-05 09:38:41,578 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:41,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash 920646453, now seen corresponding path program 1 times [2018-10-05 09:38:41,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:41,907 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:38:42,261 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-05 09:38:42,484 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2018-10-05 09:38:42,706 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2018-10-05 09:38:43,009 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2018-10-05 09:38:44,467 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-05 09:38:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:44,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:38:44,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:38:44,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:38:44,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:38:44,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:38:44,563 INFO L87 Difference]: Start difference. First operand 61 states and 132 transitions. Second operand 24 states. [2018-10-05 09:38:46,106 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2018-10-05 09:38:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:47,010 INFO L93 Difference]: Finished difference Result 308 states and 598 transitions. [2018-10-05 09:38:47,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-05 09:38:47,011 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-10-05 09:38:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:47,015 INFO L225 Difference]: With dead ends: 308 [2018-10-05 09:38:47,015 INFO L226 Difference]: Without dead ends: 308 [2018-10-05 09:38:47,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=362, Invalid=970, Unknown=0, NotChecked=0, Total=1332 [2018-10-05 09:38:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-05 09:38:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 67. [2018-10-05 09:38:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-05 09:38:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 174 transitions. [2018-10-05 09:38:47,022 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 174 transitions. Word has length 28 [2018-10-05 09:38:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:47,022 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 174 transitions. [2018-10-05 09:38:47,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:38:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 174 transitions. [2018-10-05 09:38:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:47,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:47,024 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] [2018-10-05 09:38:47,024 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:47,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:47,025 INFO L82 PathProgramCache]: Analyzing trace with hash 920646639, now seen corresponding path program 1 times [2018-10-05 09:38:47,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:47,471 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 30 [2018-10-05 09:38:47,656 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2018-10-05 09:38:47,899 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 36 [2018-10-05 09:38:48,242 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 38 [2018-10-05 09:38:48,621 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 40 [2018-10-05 09:38:48,868 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 35 [2018-10-05 09:38:49,105 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 45 [2018-10-05 09:38:49,331 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 42 [2018-10-05 09:38:49,579 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 35 [2018-10-05 09:38:49,802 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 35 [2018-10-05 09:38:50,082 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 31 [2018-10-05 09:38:50,337 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 28 [2018-10-05 09:38:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:50,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:38:50,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:38:50,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:38:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:38:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:38:50,824 INFO L87 Difference]: Start difference. First operand 67 states and 174 transitions. Second operand 25 states. [2018-10-05 09:38:51,759 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-05 09:38:52,027 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2018-10-05 09:38:52,289 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2018-10-05 09:38:52,629 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2018-10-05 09:38:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:53,706 INFO L93 Difference]: Finished difference Result 332 states and 645 transitions. [2018-10-05 09:38:53,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-05 09:38:53,707 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2018-10-05 09:38:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:53,710 INFO L225 Difference]: With dead ends: 332 [2018-10-05 09:38:53,710 INFO L226 Difference]: Without dead ends: 331 [2018-10-05 09:38:53,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=404, Invalid=1078, Unknown=0, NotChecked=0, Total=1482 [2018-10-05 09:38:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-05 09:38:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 80. [2018-10-05 09:38:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-05 09:38:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 208 transitions. [2018-10-05 09:38:53,718 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 208 transitions. Word has length 28 [2018-10-05 09:38:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:53,718 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 208 transitions. [2018-10-05 09:38:53,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:38:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 208 transitions. [2018-10-05 09:38:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:53,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:53,719 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] [2018-10-05 09:38:53,720 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:53,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:53,720 INFO L82 PathProgramCache]: Analyzing trace with hash 920646205, now seen corresponding path program 1 times [2018-10-05 09:38:53,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:54,121 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:38:55,132 WARN L178 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 13 [2018-10-05 09:38:55,983 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 44 [2018-10-05 09:38:56,105 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 41 [2018-10-05 09:38:56,244 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 39 [2018-10-05 09:38:56,411 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 36 [2018-10-05 09:38:56,652 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2018-10-05 09:38:56,786 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2018-10-05 09:38:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:56,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:38:56,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-05 09:38:56,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-05 09:38:56,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-05 09:38:56,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:38:56,923 INFO L87 Difference]: Start difference. First operand 80 states and 208 transitions. Second operand 22 states. [2018-10-05 09:38:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:38:59,305 INFO L93 Difference]: Finished difference Result 340 states and 770 transitions. [2018-10-05 09:38:59,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:38:59,305 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2018-10-05 09:38:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:38:59,309 INFO L225 Difference]: With dead ends: 340 [2018-10-05 09:38:59,309 INFO L226 Difference]: Without dead ends: 340 [2018-10-05 09:38:59,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2018-10-05 09:38:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-05 09:38:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 89. [2018-10-05 09:38:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-05 09:38:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 276 transitions. [2018-10-05 09:38:59,317 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 276 transitions. Word has length 28 [2018-10-05 09:38:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:38:59,317 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 276 transitions. [2018-10-05 09:38:59,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-05 09:38:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 276 transitions. [2018-10-05 09:38:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-05 09:38:59,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:38:59,319 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] [2018-10-05 09:38:59,319 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:38:59,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:38:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash 920693918, now seen corresponding path program 1 times [2018-10-05 09:38:59,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:38:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:38:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:38:59,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:38:59,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-05 09:38:59,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-05 09:38:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-05 09:38:59,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:38:59,928 INFO L87 Difference]: Start difference. First operand 89 states and 276 transitions. Second operand 22 states. [2018-10-05 09:39:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:00,876 INFO L93 Difference]: Finished difference Result 255 states and 603 transitions. [2018-10-05 09:39:00,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:39:00,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2018-10-05 09:39:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:00,879 INFO L225 Difference]: With dead ends: 255 [2018-10-05 09:39:00,879 INFO L226 Difference]: Without dead ends: 255 [2018-10-05 09:39:00,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:39:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-05 09:39:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 100. [2018-10-05 09:39:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-05 09:39:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 336 transitions. [2018-10-05 09:39:00,886 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 336 transitions. Word has length 28 [2018-10-05 09:39:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:00,886 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 336 transitions. [2018-10-05 09:39:00,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-05 09:39:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 336 transitions. [2018-10-05 09:39:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-05 09:39:00,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:00,888 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] [2018-10-05 09:39:00,888 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:00,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1524765515, now seen corresponding path program 1 times [2018-10-05 09:39:00,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:39:02,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:39:02,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-05 09:39:02,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:39:02,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:39:02,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:39:02,210 INFO L87 Difference]: Start difference. First operand 100 states and 336 transitions. Second operand 26 states. [2018-10-05 09:39:03,085 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-10-05 09:39:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:04,171 INFO L93 Difference]: Finished difference Result 236 states and 598 transitions. [2018-10-05 09:39:04,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:39:04,174 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2018-10-05 09:39:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:04,176 INFO L225 Difference]: With dead ends: 236 [2018-10-05 09:39:04,176 INFO L226 Difference]: Without dead ends: 236 [2018-10-05 09:39:04,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2018-10-05 09:39:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-05 09:39:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 105. [2018-10-05 09:39:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-05 09:39:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 377 transitions. [2018-10-05 09:39:04,182 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 377 transitions. Word has length 29 [2018-10-05 09:39:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:04,183 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 377 transitions. [2018-10-05 09:39:04,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:39:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 377 transitions. [2018-10-05 09:39:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-05 09:39:04,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:04,184 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] [2018-10-05 09:39:04,185 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:04,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:04,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1524734763, now seen corresponding path program 1 times [2018-10-05 09:39:04,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:05,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:39:05,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:39:05,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:39:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:39:05,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:39:05,411 INFO L87 Difference]: Start difference. First operand 105 states and 377 transitions. Second operand 24 states. [2018-10-05 09:39:06,141 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-05 09:39:06,282 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-05 09:39:06,410 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2018-10-05 09:39:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:07,030 INFO L93 Difference]: Finished difference Result 217 states and 606 transitions. [2018-10-05 09:39:07,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:39:07,030 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 29 [2018-10-05 09:39:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:07,033 INFO L225 Difference]: With dead ends: 217 [2018-10-05 09:39:07,034 INFO L226 Difference]: Without dead ends: 217 [2018-10-05 09:39:07,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:39:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-05 09:39:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 113. [2018-10-05 09:39:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-05 09:39:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 435 transitions. [2018-10-05 09:39:07,039 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 435 transitions. Word has length 29 [2018-10-05 09:39:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:07,040 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 435 transitions. [2018-10-05 09:39:07,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:39:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 435 transitions. [2018-10-05 09:39:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-05 09:39:07,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:07,041 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] [2018-10-05 09:39:07,041 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:07,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1524761671, now seen corresponding path program 1 times [2018-10-05 09:39:07,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:07,329 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:39:07,969 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-05 09:39:08,198 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-05 09:39:08,316 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-10-05 09:39:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:08,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:39:08,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:39:08,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:39:08,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:39:08,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:39:08,953 INFO L87 Difference]: Start difference. First operand 113 states and 435 transitions. Second operand 25 states. [2018-10-05 09:39:09,586 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-05 09:39:09,899 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-10-05 09:39:10,064 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2018-10-05 09:39:10,199 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2018-10-05 09:39:10,385 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2018-10-05 09:39:10,576 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-10-05 09:39:10,738 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-05 09:39:10,913 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2018-10-05 09:39:11,288 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-05 09:39:11,493 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2018-10-05 09:39:11,743 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2018-10-05 09:39:11,969 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-05 09:39:12,157 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2018-10-05 09:39:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:12,584 INFO L93 Difference]: Finished difference Result 289 states and 926 transitions. [2018-10-05 09:39:12,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-05 09:39:12,584 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 29 [2018-10-05 09:39:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:12,587 INFO L225 Difference]: With dead ends: 289 [2018-10-05 09:39:12,588 INFO L226 Difference]: Without dead ends: 289 [2018-10-05 09:39:12,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=520, Invalid=1286, Unknown=0, NotChecked=0, Total=1806 [2018-10-05 09:39:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-05 09:39:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 123. [2018-10-05 09:39:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-05 09:39:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 507 transitions. [2018-10-05 09:39:12,595 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 507 transitions. Word has length 29 [2018-10-05 09:39:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:12,595 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 507 transitions. [2018-10-05 09:39:12,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:39:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 507 transitions. [2018-10-05 09:39:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-05 09:39:12,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:12,597 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] [2018-10-05 09:39:12,597 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:12,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1524727075, now seen corresponding path program 1 times [2018-10-05 09:39:12,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:13,011 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:39:13,385 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2018-10-05 09:39:13,705 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2018-10-05 09:39:14,029 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2018-10-05 09:39:14,158 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 35 [2018-10-05 09:39:14,289 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 37 [2018-10-05 09:39:14,467 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2018-10-05 09:39:14,640 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 41 [2018-10-05 09:39:14,803 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2018-10-05 09:39:15,079 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2018-10-05 09:39:15,240 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2018-10-05 09:39:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:15,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:39:15,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:39:15,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:39:15,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:39:15,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:39:15,485 INFO L87 Difference]: Start difference. First operand 123 states and 507 transitions. Second operand 23 states. [2018-10-05 09:39:16,535 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2018-10-05 09:39:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:17,342 INFO L93 Difference]: Finished difference Result 282 states and 896 transitions. [2018-10-05 09:39:17,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:39:17,343 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2018-10-05 09:39:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:17,346 INFO L225 Difference]: With dead ends: 282 [2018-10-05 09:39:17,346 INFO L226 Difference]: Without dead ends: 282 [2018-10-05 09:39:17,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2018-10-05 09:39:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-05 09:39:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 139. [2018-10-05 09:39:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-05 09:39:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 623 transitions. [2018-10-05 09:39:17,355 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 623 transitions. Word has length 29 [2018-10-05 09:39:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:17,356 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 623 transitions. [2018-10-05 09:39:17,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:39:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 623 transitions. [2018-10-05 09:39:17,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-05 09:39:17,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:17,357 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] [2018-10-05 09:39:17,357 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:17,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1523259500, now seen corresponding path program 1 times [2018-10-05 09:39:17,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:17,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:39:17,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-10-05 09:39:17,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-05 09:39:17,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-05 09:39:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:39:17,950 INFO L87 Difference]: Start difference. First operand 139 states and 623 transitions. Second operand 19 states. [2018-10-05 09:39:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:19,099 INFO L93 Difference]: Finished difference Result 392 states and 1252 transitions. [2018-10-05 09:39:19,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:39:19,100 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 29 [2018-10-05 09:39:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:19,103 INFO L225 Difference]: With dead ends: 392 [2018-10-05 09:39:19,103 INFO L226 Difference]: Without dead ends: 392 [2018-10-05 09:39:19,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:39:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-10-05 09:39:19,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 142. [2018-10-05 09:39:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-05 09:39:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 625 transitions. [2018-10-05 09:39:19,110 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 625 transitions. Word has length 29 [2018-10-05 09:39:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:19,111 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 625 transitions. [2018-10-05 09:39:19,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-05 09:39:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 625 transitions. [2018-10-05 09:39:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:39:19,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:19,112 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] [2018-10-05 09:39:19,112 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:19,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:19,113 INFO L82 PathProgramCache]: Analyzing trace with hash -23138558, now seen corresponding path program 1 times [2018-10-05 09:39:19,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:20,276 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 24 [2018-10-05 09:39:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:20,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:39:20,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:39:20,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:39:20,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:39:20,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:39:20,952 INFO L87 Difference]: Start difference. First operand 142 states and 625 transitions. Second operand 28 states. [2018-10-05 09:39:21,556 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2018-10-05 09:39:21,818 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2018-10-05 09:39:22,061 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2018-10-05 09:39:22,191 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-10-05 09:39:22,538 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2018-10-05 09:39:22,795 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2018-10-05 09:39:23,142 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2018-10-05 09:39:23,605 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2018-10-05 09:39:24,180 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2018-10-05 09:39:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:25,494 INFO L93 Difference]: Finished difference Result 502 states and 1713 transitions. [2018-10-05 09:39:25,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-05 09:39:25,494 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 30 [2018-10-05 09:39:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:25,498 INFO L225 Difference]: With dead ends: 502 [2018-10-05 09:39:25,498 INFO L226 Difference]: Without dead ends: 502 [2018-10-05 09:39:25,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=844, Invalid=1912, Unknown=0, NotChecked=0, Total=2756 [2018-10-05 09:39:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-10-05 09:39:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 146. [2018-10-05 09:39:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-05 09:39:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 653 transitions. [2018-10-05 09:39:25,507 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 653 transitions. Word has length 30 [2018-10-05 09:39:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:25,507 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 653 transitions. [2018-10-05 09:39:25,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:39:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 653 transitions. [2018-10-05 09:39:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:39:25,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:25,508 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] [2018-10-05 09:39:25,509 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:25,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash -23090597, now seen corresponding path program 1 times [2018-10-05 09:39:25,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:25,965 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-10-05 09:39:26,154 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-05 09:39:26,406 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-05 09:39:26,698 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-05 09:39:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:39:27,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:39:27,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-05 09:39:27,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:39:27,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:39:27,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:39:27,703 INFO L87 Difference]: Start difference. First operand 146 states and 653 transitions. Second operand 25 states. [2018-10-05 09:39:28,424 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2018-10-05 09:39:28,596 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2018-10-05 09:39:28,822 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2018-10-05 09:39:29,176 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2018-10-05 09:39:29,408 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2018-10-05 09:39:29,596 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2018-10-05 09:39:29,821 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-05 09:39:30,019 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2018-10-05 09:39:30,224 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 44 [2018-10-05 09:39:30,503 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2018-10-05 09:39:30,913 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2018-10-05 09:39:31,235 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2018-10-05 09:39:31,448 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2018-10-05 09:39:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:31,719 INFO L93 Difference]: Finished difference Result 367 states and 1450 transitions. [2018-10-05 09:39:31,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-05 09:39:31,719 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 30 [2018-10-05 09:39:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:31,723 INFO L225 Difference]: With dead ends: 367 [2018-10-05 09:39:31,723 INFO L226 Difference]: Without dead ends: 367 [2018-10-05 09:39:31,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2018-10-05 09:39:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-05 09:39:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 185. [2018-10-05 09:39:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-05 09:39:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 932 transitions. [2018-10-05 09:39:31,733 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 932 transitions. Word has length 30 [2018-10-05 09:39:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:31,733 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 932 transitions. [2018-10-05 09:39:31,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:39:31,733 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 932 transitions. [2018-10-05 09:39:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:39:31,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:31,734 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] [2018-10-05 09:39:31,735 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:31,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:31,735 INFO L82 PathProgramCache]: Analyzing trace with hash -22661406, now seen corresponding path program 1 times [2018-10-05 09:39:31,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:32,403 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-05 09:39:32,559 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-05 09:39:33,024 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-05 09:39:33,183 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-05 09:39:33,339 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-05 09:39:33,494 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-10-05 09:39:33,651 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2018-10-05 09:39:33,803 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2018-10-05 09:39:34,121 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 24 [2018-10-05 09:39:34,280 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 21 [2018-10-05 09:39:34,501 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 21 [2018-10-05 09:39:35,258 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8 [2018-10-05 09:39:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:35,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:39:35,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:39:35,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:39:35,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:39:35,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:39:35,271 INFO L87 Difference]: Start difference. First operand 185 states and 932 transitions. Second operand 28 states. [2018-10-05 09:39:35,865 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2018-10-05 09:39:36,073 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49 [2018-10-05 09:39:36,461 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-05 09:39:36,681 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-10-05 09:39:36,963 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 58 [2018-10-05 09:39:37,239 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2018-10-05 09:39:37,592 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2018-10-05 09:39:37,875 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2018-10-05 09:39:38,075 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2018-10-05 09:39:38,381 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2018-10-05 09:39:38,594 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2018-10-05 09:39:38,900 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-10-05 09:39:39,294 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-05 09:39:39,515 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2018-10-05 09:39:39,862 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2018-10-05 09:39:40,331 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2018-10-05 09:39:40,775 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2018-10-05 09:39:41,047 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 43 [2018-10-05 09:39:41,758 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-05 09:39:42,067 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2018-10-05 09:39:42,355 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 58 [2018-10-05 09:39:42,691 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 58 [2018-10-05 09:39:43,312 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 58 [2018-10-05 09:39:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:39:43,415 INFO L93 Difference]: Finished difference Result 493 states and 1825 transitions. [2018-10-05 09:39:43,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-05 09:39:43,415 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 30 [2018-10-05 09:39:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:39:43,420 INFO L225 Difference]: With dead ends: 493 [2018-10-05 09:39:43,420 INFO L226 Difference]: Without dead ends: 493 [2018-10-05 09:39:43,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=852, Invalid=1904, Unknown=0, NotChecked=0, Total=2756 [2018-10-05 09:39:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-10-05 09:39:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 211. [2018-10-05 09:39:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-05 09:39:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 1094 transitions. [2018-10-05 09:39:43,430 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 1094 transitions. Word has length 30 [2018-10-05 09:39:43,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:39:43,430 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 1094 transitions. [2018-10-05 09:39:43,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:39:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 1094 transitions. [2018-10-05 09:39:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:39:43,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:39:43,432 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:39:43,432 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:39:43,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:39:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash -22661220, now seen corresponding path program 1 times [2018-10-05 09:39:43,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:39:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:39:43,869 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:39:44,250 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-05 09:39:44,392 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-05 09:39:44,602 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-05 09:39:44,973 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2018-10-05 09:39:45,420 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 94 [2018-10-05 09:39:45,716 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 42 [2018-10-05 09:39:46,076 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 52 [2018-10-05 09:39:46,445 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 49 [2018-10-05 09:39:46,782 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 44 [2018-10-05 09:39:47,121 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 42 [2018-10-05 09:39:47,542 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 45 [2018-10-05 09:39:47,824 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 36 [2018-10-05 09:39:48,071 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 32 [2018-10-05 09:39:48,299 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 27 [2018-10-05 09:39:48,497 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 22 [2018-10-05 09:39:48,647 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2018-10-05 09:39:48,963 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 17 [2018-10-05 09:39:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:39:49,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:39:49,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:39:49,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:39:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:39:49,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:39:49,115 INFO L87 Difference]: Start difference. First operand 211 states and 1094 transitions. Second operand 28 states. [2018-10-05 09:39:49,636 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2018-10-05 09:39:49,863 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 40 [2018-10-05 09:39:50,182 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 49 [2018-10-05 09:39:50,550 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 52 [2018-10-05 09:39:51,092 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 57 [2018-10-05 09:39:51,476 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 63 [2018-10-05 09:39:51,848 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 59 [2018-10-05 09:39:52,504 WARN L178 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 58 [2018-10-05 09:39:52,848 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 57 [2018-10-05 09:39:53,222 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 64 [2018-10-05 09:39:53,640 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 62 [2018-10-05 09:39:53,993 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 63 [2018-10-05 09:39:54,414 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-05 09:39:54,764 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 59 [2018-10-05 09:39:55,139 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 65 [2018-10-05 09:39:55,623 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 54 [2018-10-05 09:39:56,058 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 58 [2018-10-05 09:39:56,440 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 67 [2018-10-05 09:39:56,838 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-05 09:39:57,281 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 57 [2018-10-05 09:39:57,807 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2018-10-05 09:39:58,456 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 60 [2018-10-05 09:39:58,858 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 47 [2018-10-05 09:39:59,657 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 63 [2018-10-05 09:40:00,037 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 62 [2018-10-05 09:40:00,415 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 62 [2018-10-05 09:40:00,809 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 64 [2018-10-05 09:40:01,647 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 65 [2018-10-05 09:40:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:01,656 INFO L93 Difference]: Finished difference Result 648 states and 2624 transitions. [2018-10-05 09:40:01,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-05 09:40:01,656 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 30 [2018-10-05 09:40:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:01,662 INFO L225 Difference]: With dead ends: 648 [2018-10-05 09:40:01,662 INFO L226 Difference]: Without dead ends: 648 [2018-10-05 09:40:01,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=1090, Invalid=2450, Unknown=0, NotChecked=0, Total=3540 [2018-10-05 09:40:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2018-10-05 09:40:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 273. [2018-10-05 09:40:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-10-05 09:40:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 1528 transitions. [2018-10-05 09:40:01,674 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 1528 transitions. Word has length 30 [2018-10-05 09:40:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:01,674 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 1528 transitions. [2018-10-05 09:40:01,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:40:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 1528 transitions. [2018-10-05 09:40:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:01,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:01,676 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] [2018-10-05 09:40:01,676 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:01,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash -22184750, now seen corresponding path program 1 times [2018-10-05 09:40:01,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:02,276 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2018-10-05 09:40:02,462 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-05 09:40:02,636 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2018-10-05 09:40:02,847 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2018-10-05 09:40:03,025 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2018-10-05 09:40:03,243 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2018-10-05 09:40:03,463 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-05 09:40:03,669 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-05 09:40:03,870 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2018-10-05 09:40:04,135 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2018-10-05 09:40:04,345 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2018-10-05 09:40:04,489 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2018-10-05 09:40:04,643 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-05 09:40:04,812 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2018-10-05 09:40:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:05,083 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:05,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:40:05,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:40:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:40:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:40:05,085 INFO L87 Difference]: Start difference. First operand 273 states and 1528 transitions. Second operand 27 states. [2018-10-05 09:40:05,552 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2018-10-05 09:40:05,833 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2018-10-05 09:40:06,090 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 45 [2018-10-05 09:40:06,392 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2018-10-05 09:40:06,685 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2018-10-05 09:40:07,185 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 55 [2018-10-05 09:40:07,554 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 70 [2018-10-05 09:40:07,944 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-05 09:40:08,433 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 63 [2018-10-05 09:40:08,794 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 59 [2018-10-05 09:40:09,082 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 60 [2018-10-05 09:40:09,444 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 58 [2018-10-05 09:40:09,861 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2018-10-05 09:40:10,226 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2018-10-05 09:40:10,596 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 60 [2018-10-05 09:40:11,211 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 58 [2018-10-05 09:40:11,833 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2018-10-05 09:40:12,176 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 57 [2018-10-05 09:40:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:12,877 INFO L93 Difference]: Finished difference Result 604 states and 2906 transitions. [2018-10-05 09:40:12,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-05 09:40:12,878 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2018-10-05 09:40:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:12,884 INFO L225 Difference]: With dead ends: 604 [2018-10-05 09:40:12,884 INFO L226 Difference]: Without dead ends: 604 [2018-10-05 09:40:12,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=637, Invalid=1525, Unknown=0, NotChecked=0, Total=2162 [2018-10-05 09:40:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2018-10-05 09:40:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 295. [2018-10-05 09:40:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-05 09:40:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 1682 transitions. [2018-10-05 09:40:12,895 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 1682 transitions. Word has length 30 [2018-10-05 09:40:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:12,896 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 1682 transitions. [2018-10-05 09:40:12,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:40:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 1682 transitions. [2018-10-05 09:40:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:12,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:12,897 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] [2018-10-05 09:40:12,897 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:12,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:12,897 INFO L82 PathProgramCache]: Analyzing trace with hash -22184564, now seen corresponding path program 1 times [2018-10-05 09:40:12,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:13,303 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2018-10-05 09:40:13,484 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2018-10-05 09:40:13,697 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-10-05 09:40:13,905 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2018-10-05 09:40:14,146 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2018-10-05 09:40:14,270 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-05 09:40:14,389 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2018-10-05 09:40:14,526 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-05 09:40:14,660 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-05 09:40:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:15,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:15,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:40:15,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:40:15,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:40:15,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:40:15,340 INFO L87 Difference]: Start difference. First operand 295 states and 1682 transitions. Second operand 26 states. [2018-10-05 09:40:16,244 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-05 09:40:16,486 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2018-10-05 09:40:16,719 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 57 [2018-10-05 09:40:17,235 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2018-10-05 09:40:17,507 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 59 [2018-10-05 09:40:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:18,378 INFO L93 Difference]: Finished difference Result 516 states and 2754 transitions. [2018-10-05 09:40:18,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:40:18,379 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 30 [2018-10-05 09:40:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:18,385 INFO L225 Difference]: With dead ends: 516 [2018-10-05 09:40:18,385 INFO L226 Difference]: Without dead ends: 516 [2018-10-05 09:40:18,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2018-10-05 09:40:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-10-05 09:40:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 357. [2018-10-05 09:40:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-10-05 09:40:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 2116 transitions. [2018-10-05 09:40:18,396 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 2116 transitions. Word has length 30 [2018-10-05 09:40:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:18,396 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 2116 transitions. [2018-10-05 09:40:18,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:40:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 2116 transitions. [2018-10-05 09:40:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:18,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:18,398 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] [2018-10-05 09:40:18,398 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:18,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash -22971433, now seen corresponding path program 1 times [2018-10-05 09:40:18,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:18,791 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-05 09:40:19,263 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-10-05 09:40:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:40:19,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:40:19,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-05 09:40:19,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:40:19,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:40:19,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:40:19,829 INFO L87 Difference]: Start difference. First operand 357 states and 2116 transitions. Second operand 24 states. [2018-10-05 09:40:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:21,415 INFO L93 Difference]: Finished difference Result 648 states and 3255 transitions. [2018-10-05 09:40:21,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:40:21,416 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2018-10-05 09:40:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:21,422 INFO L225 Difference]: With dead ends: 648 [2018-10-05 09:40:21,422 INFO L226 Difference]: Without dead ends: 648 [2018-10-05 09:40:21,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2018-10-05 09:40:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2018-10-05 09:40:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 371. [2018-10-05 09:40:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-05 09:40:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 2214 transitions. [2018-10-05 09:40:21,433 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 2214 transitions. Word has length 30 [2018-10-05 09:40:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:21,434 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 2214 transitions. [2018-10-05 09:40:21,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:40:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 2214 transitions. [2018-10-05 09:40:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:21,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:21,435 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] [2018-10-05 09:40:21,435 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:21,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash -22018121, now seen corresponding path program 1 times [2018-10-05 09:40:21,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:21,793 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:40:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:22,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:22,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:40:22,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:40:22,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:40:22,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:40:22,628 INFO L87 Difference]: Start difference. First operand 371 states and 2214 transitions. Second operand 23 states. [2018-10-05 09:40:23,790 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-05 09:40:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:24,694 INFO L93 Difference]: Finished difference Result 609 states and 3102 transitions. [2018-10-05 09:40:24,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-05 09:40:24,697 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2018-10-05 09:40:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:24,703 INFO L225 Difference]: With dead ends: 609 [2018-10-05 09:40:24,703 INFO L226 Difference]: Without dead ends: 609 [2018-10-05 09:40:24,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2018-10-05 09:40:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2018-10-05 09:40:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 405. [2018-10-05 09:40:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-10-05 09:40:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 2388 transitions. [2018-10-05 09:40:24,716 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 2388 transitions. Word has length 30 [2018-10-05 09:40:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:24,716 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 2388 transitions. [2018-10-05 09:40:24,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:40:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 2388 transitions. [2018-10-05 09:40:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:24,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:24,718 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] [2018-10-05 09:40:24,718 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:24,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash -21946236, now seen corresponding path program 1 times [2018-10-05 09:40:24,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:25,221 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 25 [2018-10-05 09:40:25,448 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 34 [2018-10-05 09:40:25,748 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 43 [2018-10-05 09:40:26,168 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 51 [2018-10-05 09:40:26,444 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 40 [2018-10-05 09:40:26,609 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 37 [2018-10-05 09:40:26,772 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2018-10-05 09:40:26,955 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 32 [2018-10-05 09:40:27,384 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2018-10-05 09:40:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:27,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:27,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:40:27,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:40:27,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:40:27,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:40:27,746 INFO L87 Difference]: Start difference. First operand 405 states and 2388 transitions. Second operand 23 states. [2018-10-05 09:40:28,709 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2018-10-05 09:40:28,878 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-05 09:40:29,022 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2018-10-05 09:40:29,154 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2018-10-05 09:40:29,331 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-05 09:40:29,498 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2018-10-05 09:40:29,652 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 44 [2018-10-05 09:40:29,804 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-05 09:40:29,977 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2018-10-05 09:40:30,147 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2018-10-05 09:40:30,297 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2018-10-05 09:40:30,471 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-05 09:40:30,660 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2018-10-05 09:40:30,934 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-05 09:40:31,133 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2018-10-05 09:40:31,356 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-05 09:40:31,568 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2018-10-05 09:40:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:32,355 INFO L93 Difference]: Finished difference Result 924 states and 4706 transitions. [2018-10-05 09:40:32,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-05 09:40:32,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2018-10-05 09:40:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:32,363 INFO L225 Difference]: With dead ends: 924 [2018-10-05 09:40:32,363 INFO L226 Difference]: Without dead ends: 924 [2018-10-05 09:40:32,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=670, Invalid=1492, Unknown=0, NotChecked=0, Total=2162 [2018-10-05 09:40:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2018-10-05 09:40:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 435. [2018-10-05 09:40:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-10-05 09:40:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 2597 transitions. [2018-10-05 09:40:32,377 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 2597 transitions. Word has length 30 [2018-10-05 09:40:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:32,377 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 2597 transitions. [2018-10-05 09:40:32,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:40:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 2597 transitions. [2018-10-05 09:40:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:32,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:32,378 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] [2018-10-05 09:40:32,379 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:32,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash -21839375, now seen corresponding path program 1 times [2018-10-05 09:40:32,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:33,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:33,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-05 09:40:33,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-05 09:40:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-05 09:40:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:40:33,141 INFO L87 Difference]: Start difference. First operand 435 states and 2597 transitions. Second operand 22 states. [2018-10-05 09:40:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:33,952 INFO L93 Difference]: Finished difference Result 535 states and 3140 transitions. [2018-10-05 09:40:33,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:40:33,953 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 30 [2018-10-05 09:40:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:33,958 INFO L225 Difference]: With dead ends: 535 [2018-10-05 09:40:33,958 INFO L226 Difference]: Without dead ends: 535 [2018-10-05 09:40:33,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:40:33,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-10-05 09:40:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 493. [2018-10-05 09:40:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-10-05 09:40:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 3015 transitions. [2018-10-05 09:40:33,969 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 3015 transitions. Word has length 30 [2018-10-05 09:40:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:33,969 INFO L480 AbstractCegarLoop]: Abstraction has 493 states and 3015 transitions. [2018-10-05 09:40:33,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-05 09:40:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 3015 transitions. [2018-10-05 09:40:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-05 09:40:33,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:33,970 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] [2018-10-05 09:40:33,970 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:33,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash 23595872, now seen corresponding path program 1 times [2018-10-05 09:40:33,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:34,382 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 42 [2018-10-05 09:40:34,533 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 44 [2018-10-05 09:40:34,682 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 39 [2018-10-05 09:40:35,193 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2018-10-05 09:40:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:35,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:40:35,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-10-05 09:40:35,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-05 09:40:35,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-05 09:40:35,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2018-10-05 09:40:35,332 INFO L87 Difference]: Start difference. First operand 493 states and 3015 transitions. Second operand 21 states. [2018-10-05 09:40:35,904 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-05 09:40:36,152 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-05 09:40:36,433 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2018-10-05 09:40:38,033 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2018-10-05 09:40:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:38,742 INFO L93 Difference]: Finished difference Result 865 states and 4279 transitions. [2018-10-05 09:40:38,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-05 09:40:38,742 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 30 [2018-10-05 09:40:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:38,751 INFO L225 Difference]: With dead ends: 865 [2018-10-05 09:40:38,751 INFO L226 Difference]: Without dead ends: 865 [2018-10-05 09:40:38,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=625, Invalid=1355, Unknown=0, NotChecked=0, Total=1980 [2018-10-05 09:40:38,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-10-05 09:40:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 525. [2018-10-05 09:40:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-05 09:40:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 3171 transitions. [2018-10-05 09:40:38,769 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 3171 transitions. Word has length 30 [2018-10-05 09:40:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:38,770 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 3171 transitions. [2018-10-05 09:40:38,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-05 09:40:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 3171 transitions. [2018-10-05 09:40:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:40:38,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:38,771 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] [2018-10-05 09:40:38,771 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:38,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:38,772 INFO L82 PathProgramCache]: Analyzing trace with hash -717283656, now seen corresponding path program 1 times [2018-10-05 09:40:38,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:39,143 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:40:39,504 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-05 09:40:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:40:40,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:40,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:40:40,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:40:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:40:40,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:40:40,334 INFO L87 Difference]: Start difference. First operand 525 states and 3171 transitions. Second operand 26 states. [2018-10-05 09:40:41,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:41,499 INFO L93 Difference]: Finished difference Result 607 states and 3586 transitions. [2018-10-05 09:40:41,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:40:41,500 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 31 [2018-10-05 09:40:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:41,507 INFO L225 Difference]: With dead ends: 607 [2018-10-05 09:40:41,507 INFO L226 Difference]: Without dead ends: 607 [2018-10-05 09:40:41,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2018-10-05 09:40:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2018-10-05 09:40:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 488. [2018-10-05 09:40:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-10-05 09:40:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 2929 transitions. [2018-10-05 09:40:41,518 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 2929 transitions. Word has length 31 [2018-10-05 09:40:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:41,518 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 2929 transitions. [2018-10-05 09:40:41,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:40:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 2929 transitions. [2018-10-05 09:40:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:40:41,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:41,520 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] [2018-10-05 09:40:41,520 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:41,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash -717310564, now seen corresponding path program 1 times [2018-10-05 09:40:41,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:40:42,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:42,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:40:42,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:40:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:40:42,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:40:42,515 INFO L87 Difference]: Start difference. First operand 488 states and 2929 transitions. Second operand 26 states. [2018-10-05 09:40:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:45,069 INFO L93 Difference]: Finished difference Result 1276 states and 7403 transitions. [2018-10-05 09:40:45,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-05 09:40:45,069 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 31 [2018-10-05 09:40:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:45,082 INFO L225 Difference]: With dead ends: 1276 [2018-10-05 09:40:45,082 INFO L226 Difference]: Without dead ends: 1276 [2018-10-05 09:40:45,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=568, Invalid=1412, Unknown=0, NotChecked=0, Total=1980 [2018-10-05 09:40:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2018-10-05 09:40:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 692. [2018-10-05 09:40:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2018-10-05 09:40:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 4357 transitions. [2018-10-05 09:40:45,104 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 4357 transitions. Word has length 31 [2018-10-05 09:40:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:45,104 INFO L480 AbstractCegarLoop]: Abstraction has 692 states and 4357 transitions. [2018-10-05 09:40:45,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:40:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 4357 transitions. [2018-10-05 09:40:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:40:45,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:45,105 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] [2018-10-05 09:40:45,106 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:45,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:45,106 INFO L82 PathProgramCache]: Analyzing trace with hash -715808393, now seen corresponding path program 1 times [2018-10-05 09:40:45,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:45,640 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-05 09:40:45,782 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-05 09:40:45,968 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2018-10-05 09:40:46,640 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2018-10-05 09:40:46,823 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-05 09:40:46,994 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2018-10-05 09:40:47,160 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2018-10-05 09:40:47,312 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2018-10-05 09:40:47,457 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2018-10-05 09:40:47,603 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2018-10-05 09:40:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:40:47,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:40:47,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-05 09:40:47,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:40:47,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:40:47,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:40:47,860 INFO L87 Difference]: Start difference. First operand 692 states and 4357 transitions. Second operand 26 states. [2018-10-05 09:40:48,793 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-10-05 09:40:48,981 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-05 09:40:49,210 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-10-05 09:40:49,492 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2018-10-05 09:40:49,772 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-05 09:40:50,018 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-05 09:40:50,268 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2018-10-05 09:40:50,517 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2018-10-05 09:40:50,759 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2018-10-05 09:40:50,992 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2018-10-05 09:40:51,226 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2018-10-05 09:40:51,466 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2018-10-05 09:40:51,689 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2018-10-05 09:40:51,979 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2018-10-05 09:40:52,218 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-05 09:40:52,491 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2018-10-05 09:40:52,870 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2018-10-05 09:40:53,138 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2018-10-05 09:40:53,387 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2018-10-05 09:40:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:40:54,861 INFO L93 Difference]: Finished difference Result 1685 states and 9889 transitions. [2018-10-05 09:40:54,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-05 09:40:54,861 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 31 [2018-10-05 09:40:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:40:54,870 INFO L225 Difference]: With dead ends: 1685 [2018-10-05 09:40:54,870 INFO L226 Difference]: Without dead ends: 1685 [2018-10-05 09:40:54,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=788, Invalid=1864, Unknown=0, NotChecked=0, Total=2652 [2018-10-05 09:40:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2018-10-05 09:40:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1145. [2018-10-05 09:40:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2018-10-05 09:40:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 7492 transitions. [2018-10-05 09:40:54,903 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 7492 transitions. Word has length 31 [2018-10-05 09:40:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:40:54,904 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 7492 transitions. [2018-10-05 09:40:54,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:40:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 7492 transitions. [2018-10-05 09:40:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:40:54,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:40:54,905 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] [2018-10-05 09:40:54,906 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:40:54,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:40:54,906 INFO L82 PathProgramCache]: Analyzing trace with hash -687757892, now seen corresponding path program 1 times [2018-10-05 09:40:54,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:40:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:40:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:40:56,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:40:56,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:40:56,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:40:56,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:40:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:40:56,334 INFO L87 Difference]: Start difference. First operand 1145 states and 7492 transitions. Second operand 25 states. [2018-10-05 09:40:57,026 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-05 09:40:57,367 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-05 09:40:57,632 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-05 09:40:58,012 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-10-05 09:40:58,437 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-05 09:40:58,675 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-05 09:40:58,948 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-10-05 09:40:59,451 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-05 09:40:59,920 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-10-05 09:41:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:00,668 INFO L93 Difference]: Finished difference Result 2498 states and 15042 transitions. [2018-10-05 09:41:00,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-05 09:41:00,669 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2018-10-05 09:41:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:00,681 INFO L225 Difference]: With dead ends: 2498 [2018-10-05 09:41:00,682 INFO L226 Difference]: Without dead ends: 2498 [2018-10-05 09:41:00,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=938, Invalid=2032, Unknown=0, NotChecked=0, Total=2970 [2018-10-05 09:41:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2018-10-05 09:41:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 1901. [2018-10-05 09:41:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2018-10-05 09:41:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 12797 transitions. [2018-10-05 09:41:00,736 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 12797 transitions. Word has length 31 [2018-10-05 09:41:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:00,736 INFO L480 AbstractCegarLoop]: Abstraction has 1901 states and 12797 transitions. [2018-10-05 09:41:00,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:41:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 12797 transitions. [2018-10-05 09:41:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:41:00,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:00,738 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] [2018-10-05 09:41:00,738 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:00,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:00,739 INFO L82 PathProgramCache]: Analyzing trace with hash -713589572, now seen corresponding path program 2 times [2018-10-05 09:41:00,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:01,694 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-05 09:41:01,816 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-10-05 09:41:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:41:02,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:41:02,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:41:02,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:41:02,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:41:02,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:41:02,509 INFO L87 Difference]: Start difference. First operand 1901 states and 12797 transitions. Second operand 26 states. [2018-10-05 09:41:03,094 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2018-10-05 09:41:03,266 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2018-10-05 09:41:03,613 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-05 09:41:03,810 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-10-05 09:41:03,950 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2018-10-05 09:41:04,164 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-10-05 09:41:04,341 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-05 09:41:04,547 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2018-10-05 09:41:04,723 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2018-10-05 09:41:04,903 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2018-10-05 09:41:05,134 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2018-10-05 09:41:05,326 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-05 09:41:05,561 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2018-10-05 09:41:05,812 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2018-10-05 09:41:06,030 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-10-05 09:41:06,233 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-10-05 09:41:06,436 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2018-10-05 09:41:06,619 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-05 09:41:06,923 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2018-10-05 09:41:07,150 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-05 09:41:07,341 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2018-10-05 09:41:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:08,113 INFO L93 Difference]: Finished difference Result 3042 states and 18929 transitions. [2018-10-05 09:41:08,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-05 09:41:08,113 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 31 [2018-10-05 09:41:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:08,155 INFO L225 Difference]: With dead ends: 3042 [2018-10-05 09:41:08,156 INFO L226 Difference]: Without dead ends: 3042 [2018-10-05 09:41:08,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=806, Invalid=1950, Unknown=0, NotChecked=0, Total=2756 [2018-10-05 09:41:08,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2018-10-05 09:41:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2445. [2018-10-05 09:41:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2445 states. [2018-10-05 09:41:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 16611 transitions. [2018-10-05 09:41:08,225 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 16611 transitions. Word has length 31 [2018-10-05 09:41:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:08,225 INFO L480 AbstractCegarLoop]: Abstraction has 2445 states and 16611 transitions. [2018-10-05 09:41:08,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:41:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 16611 transitions. [2018-10-05 09:41:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:41:08,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:08,231 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] [2018-10-05 09:41:08,231 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:08,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:08,232 INFO L82 PathProgramCache]: Analyzing trace with hash -708420225, now seen corresponding path program 1 times [2018-10-05 09:41:08,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:08,731 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-05 09:41:08,876 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2018-10-05 09:41:09,051 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2018-10-05 09:41:09,178 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-10-05 09:41:09,336 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-05 09:41:09,521 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2018-10-05 09:41:09,734 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2018-10-05 09:41:10,010 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 61 [2018-10-05 09:41:10,274 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 54 [2018-10-05 09:41:10,526 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 50 [2018-10-05 09:41:10,769 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 40 [2018-10-05 09:41:11,009 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2018-10-05 09:41:11,164 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 29 [2018-10-05 09:41:11,358 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2018-10-05 09:41:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:41:11,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:41:11,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-05 09:41:11,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:41:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:41:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:41:11,596 INFO L87 Difference]: Start difference. First operand 2445 states and 16611 transitions. Second operand 25 states. [2018-10-05 09:41:12,316 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2018-10-05 09:41:12,638 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-05 09:41:12,829 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-05 09:41:13,019 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2018-10-05 09:41:13,183 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-05 09:41:13,350 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-05 09:41:13,514 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2018-10-05 09:41:13,684 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2018-10-05 09:41:13,868 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2018-10-05 09:41:14,084 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2018-10-05 09:41:14,553 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-05 09:41:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:15,764 INFO L93 Difference]: Finished difference Result 3371 states and 21445 transitions. [2018-10-05 09:41:15,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-05 09:41:15,765 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2018-10-05 09:41:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:15,776 INFO L225 Difference]: With dead ends: 3371 [2018-10-05 09:41:15,777 INFO L226 Difference]: Without dead ends: 3371 [2018-10-05 09:41:15,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=553, Invalid=1427, Unknown=0, NotChecked=0, Total=1980 [2018-10-05 09:41:15,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2018-10-05 09:41:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2784. [2018-10-05 09:41:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2018-10-05 09:41:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 19004 transitions. [2018-10-05 09:41:15,855 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 19004 transitions. Word has length 31 [2018-10-05 09:41:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:15,855 INFO L480 AbstractCegarLoop]: Abstraction has 2784 states and 19004 transitions. [2018-10-05 09:41:15,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:41:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 19004 transitions. [2018-10-05 09:41:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-05 09:41:15,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:15,857 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] [2018-10-05 09:41:15,858 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:15,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash 731472150, now seen corresponding path program 1 times [2018-10-05 09:41:15,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:41:16,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:41:16,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-05 09:41:16,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-05 09:41:16,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-05 09:41:16,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-05 09:41:16,097 INFO L87 Difference]: Start difference. First operand 2784 states and 19004 transitions. Second operand 13 states. [2018-10-05 09:41:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:16,690 INFO L93 Difference]: Finished difference Result 2947 states and 19468 transitions. [2018-10-05 09:41:16,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-05 09:41:16,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-10-05 09:41:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:16,698 INFO L225 Difference]: With dead ends: 2947 [2018-10-05 09:41:16,698 INFO L226 Difference]: Without dead ends: 2947 [2018-10-05 09:41:16,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:41:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2018-10-05 09:41:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2789. [2018-10-05 09:41:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2018-10-05 09:41:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 19008 transitions. [2018-10-05 09:41:16,764 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 19008 transitions. Word has length 31 [2018-10-05 09:41:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:16,764 INFO L480 AbstractCegarLoop]: Abstraction has 2789 states and 19008 transitions. [2018-10-05 09:41:16,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-05 09:41:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 19008 transitions. [2018-10-05 09:41:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:16,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:16,766 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] [2018-10-05 09:41:16,767 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:16,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:16,767 INFO L82 PathProgramCache]: Analyzing trace with hash -761790892, now seen corresponding path program 1 times [2018-10-05 09:41:16,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:41:18,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:41:18,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-05 09:41:18,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:41:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:41:18,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:41:18,015 INFO L87 Difference]: Start difference. First operand 2789 states and 19008 transitions. Second operand 25 states. [2018-10-05 09:41:19,314 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-05 09:41:19,445 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-05 09:41:19,694 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-05 09:41:20,162 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-05 09:41:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:20,508 INFO L93 Difference]: Finished difference Result 4376 states and 29353 transitions. [2018-10-05 09:41:20,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-05 09:41:20,512 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2018-10-05 09:41:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:20,526 INFO L225 Difference]: With dead ends: 4376 [2018-10-05 09:41:20,526 INFO L226 Difference]: Without dead ends: 4376 [2018-10-05 09:41:20,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=441, Invalid=1199, Unknown=0, NotChecked=0, Total=1640 [2018-10-05 09:41:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2018-10-05 09:41:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 3194. [2018-10-05 09:41:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2018-10-05 09:41:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 21849 transitions. [2018-10-05 09:41:20,601 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 21849 transitions. Word has length 32 [2018-10-05 09:41:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:20,601 INFO L480 AbstractCegarLoop]: Abstraction has 3194 states and 21849 transitions. [2018-10-05 09:41:20,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:41:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 21849 transitions. [2018-10-05 09:41:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:20,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:20,604 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] [2018-10-05 09:41:20,604 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:20,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:20,604 INFO L82 PathProgramCache]: Analyzing trace with hash -761361515, now seen corresponding path program 1 times [2018-10-05 09:41:20,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:41:22,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:41:22,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:41:22,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:41:22,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:41:22,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:41:22,308 INFO L87 Difference]: Start difference. First operand 3194 states and 21849 transitions. Second operand 28 states. [2018-10-05 09:41:24,273 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-10-05 09:41:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:25,680 INFO L93 Difference]: Finished difference Result 5136 states and 33894 transitions. [2018-10-05 09:41:25,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-05 09:41:25,680 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 32 [2018-10-05 09:41:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:25,698 INFO L225 Difference]: With dead ends: 5136 [2018-10-05 09:41:25,698 INFO L226 Difference]: Without dead ends: 5136 [2018-10-05 09:41:25,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=870, Invalid=1992, Unknown=0, NotChecked=0, Total=2862 [2018-10-05 09:41:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2018-10-05 09:41:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 3080. [2018-10-05 09:41:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2018-10-05 09:41:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 21051 transitions. [2018-10-05 09:41:25,822 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 21051 transitions. Word has length 32 [2018-10-05 09:41:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:25,822 INFO L480 AbstractCegarLoop]: Abstraction has 3080 states and 21051 transitions. [2018-10-05 09:41:25,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:41:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 21051 transitions. [2018-10-05 09:41:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:25,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:25,825 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] [2018-10-05 09:41:25,825 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:25,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash -760884859, now seen corresponding path program 1 times [2018-10-05 09:41:25,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:26,210 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:41:26,939 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-05 09:41:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:41:28,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:41:28,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-05 09:41:28,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-05 09:41:28,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-05 09:41:28,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:41:28,267 INFO L87 Difference]: Start difference. First operand 3080 states and 21051 transitions. Second operand 29 states. [2018-10-05 09:41:29,196 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-05 09:41:29,357 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-05 09:41:29,514 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2018-10-05 09:41:29,684 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2018-10-05 09:41:29,829 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2018-10-05 09:41:30,009 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-05 09:41:30,158 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2018-10-05 09:41:30,293 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2018-10-05 09:41:30,457 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-05 09:41:30,625 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2018-10-05 09:41:30,767 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2018-10-05 09:41:30,904 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2018-10-05 09:41:31,046 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-05 09:41:31,265 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-10-05 09:41:31,671 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-05 09:41:31,900 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2018-10-05 09:41:32,233 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2018-10-05 09:41:32,427 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2018-10-05 09:41:33,414 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2018-10-05 09:41:33,574 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2018-10-05 09:41:33,861 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2018-10-05 09:41:34,013 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-10-05 09:41:34,159 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-05 09:41:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:34,170 INFO L93 Difference]: Finished difference Result 4317 states and 27904 transitions. [2018-10-05 09:41:34,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-05 09:41:34,170 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2018-10-05 09:41:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:34,183 INFO L225 Difference]: With dead ends: 4317 [2018-10-05 09:41:34,183 INFO L226 Difference]: Without dead ends: 4317 [2018-10-05 09:41:34,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1096, Invalid=2564, Unknown=0, NotChecked=0, Total=3660 [2018-10-05 09:41:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2018-10-05 09:41:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 3434. [2018-10-05 09:41:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3434 states. [2018-10-05 09:41:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 23529 transitions. [2018-10-05 09:41:34,276 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 23529 transitions. Word has length 32 [2018-10-05 09:41:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:34,277 INFO L480 AbstractCegarLoop]: Abstraction has 3434 states and 23529 transitions. [2018-10-05 09:41:34,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-05 09:41:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 23529 transitions. [2018-10-05 09:41:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:34,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:34,279 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] [2018-10-05 09:41:34,279 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:34,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:34,280 INFO L82 PathProgramCache]: Analyzing trace with hash -760706299, now seen corresponding path program 2 times [2018-10-05 09:41:34,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:41:35,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:41:35,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:41:35,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:41:35,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:41:35,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:41:35,956 INFO L87 Difference]: Start difference. First operand 3434 states and 23529 transitions. Second operand 26 states. [2018-10-05 09:41:36,745 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2018-10-05 09:41:37,294 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-10-05 09:41:37,427 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2018-10-05 09:41:37,912 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-05 09:41:40,531 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2018-10-05 09:41:40,886 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-05 09:41:41,154 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-05 09:41:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:41,503 INFO L93 Difference]: Finished difference Result 5213 states and 34064 transitions. [2018-10-05 09:41:41,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-05 09:41:41,503 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2018-10-05 09:41:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:41,517 INFO L225 Difference]: With dead ends: 5213 [2018-10-05 09:41:41,517 INFO L226 Difference]: Without dead ends: 5213 [2018-10-05 09:41:41,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1130, Invalid=2530, Unknown=0, NotChecked=0, Total=3660 [2018-10-05 09:41:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2018-10-05 09:41:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 3642. [2018-10-05 09:41:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2018-10-05 09:41:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 24985 transitions. [2018-10-05 09:41:41,637 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 24985 transitions. Word has length 32 [2018-10-05 09:41:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:41,637 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 24985 transitions. [2018-10-05 09:41:41,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:41:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 24985 transitions. [2018-10-05 09:41:41,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:41,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:41,639 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] [2018-10-05 09:41:41,639 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:41,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash -760658834, now seen corresponding path program 1 times [2018-10-05 09:41:41,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:42,003 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2018-10-05 09:41:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:41:42,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:41:42,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:41:42,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:41:42,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:41:42,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:41:42,418 INFO L87 Difference]: Start difference. First operand 3642 states and 24985 transitions. Second operand 23 states. [2018-10-05 09:41:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:43,556 INFO L93 Difference]: Finished difference Result 3801 states and 25865 transitions. [2018-10-05 09:41:43,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:41:43,556 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2018-10-05 09:41:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:43,566 INFO L225 Difference]: With dead ends: 3801 [2018-10-05 09:41:43,567 INFO L226 Difference]: Without dead ends: 3801 [2018-10-05 09:41:43,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2018-10-05 09:41:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2018-10-05 09:41:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3762. [2018-10-05 09:41:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2018-10-05 09:41:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 25827 transitions. [2018-10-05 09:41:43,633 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 25827 transitions. Word has length 32 [2018-10-05 09:41:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:43,633 INFO L480 AbstractCegarLoop]: Abstraction has 3762 states and 25827 transitions. [2018-10-05 09:41:43,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:41:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 25827 transitions. [2018-10-05 09:41:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:43,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:43,636 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] [2018-10-05 09:41:43,636 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:43,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash -646142230, now seen corresponding path program 1 times [2018-10-05 09:41:43,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:44,167 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-05 09:41:44,322 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2018-10-05 09:41:44,644 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2018-10-05 09:41:45,329 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 25 [2018-10-05 09:41:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:41:45,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:41:45,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:41:45,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:41:45,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:41:45,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:41:45,653 INFO L87 Difference]: Start difference. First operand 3762 states and 25827 transitions. Second operand 24 states. [2018-10-05 09:41:46,209 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2018-10-05 09:41:46,602 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 43 [2018-10-05 09:41:46,815 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 47 [2018-10-05 09:41:47,010 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 41 [2018-10-05 09:41:47,218 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 45 [2018-10-05 09:41:47,356 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 40 [2018-10-05 09:41:47,525 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 44 [2018-10-05 09:41:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:41:48,265 INFO L93 Difference]: Finished difference Result 5164 states and 34398 transitions. [2018-10-05 09:41:48,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:41:48,265 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2018-10-05 09:41:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:41:48,282 INFO L225 Difference]: With dead ends: 5164 [2018-10-05 09:41:48,282 INFO L226 Difference]: Without dead ends: 5164 [2018-10-05 09:41:48,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2018-10-05 09:41:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2018-10-05 09:41:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 3806. [2018-10-05 09:41:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3806 states. [2018-10-05 09:41:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 26135 transitions. [2018-10-05 09:41:48,369 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 26135 transitions. Word has length 32 [2018-10-05 09:41:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:41:48,369 INFO L480 AbstractCegarLoop]: Abstraction has 3806 states and 26135 transitions. [2018-10-05 09:41:48,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:41:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 26135 transitions. [2018-10-05 09:41:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:41:48,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:41:48,372 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] [2018-10-05 09:41:48,372 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:41:48,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:41:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -600706983, now seen corresponding path program 1 times [2018-10-05 09:41:48,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:41:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:41:49,248 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-05 09:41:49,553 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 63 [2018-10-05 09:41:49,941 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 57 [2018-10-05 09:41:50,407 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 62 [2018-10-05 09:41:50,854 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 56 [2018-10-05 09:41:51,285 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 51 [2018-10-05 09:41:51,636 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 43 [2018-10-05 09:41:51,964 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 32 [2018-10-05 09:41:52,207 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 29 [2018-10-05 09:41:52,501 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2018-10-05 09:41:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:41:52,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:41:52,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-05 09:41:52,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:41:52,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:41:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:41:52,686 INFO L87 Difference]: Start difference. First operand 3806 states and 26135 transitions. Second operand 25 states. [2018-10-05 09:41:53,641 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-10-05 09:41:53,896 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-05 09:41:54,194 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2018-10-05 09:41:54,498 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2018-10-05 09:41:54,734 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 63 [2018-10-05 09:41:54,961 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2018-10-05 09:41:55,210 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2018-10-05 09:41:55,477 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 53 [2018-10-05 09:41:55,623 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2018-10-05 09:41:55,831 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2018-10-05 09:41:56,098 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2018-10-05 09:41:56,382 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 62 [2018-10-05 09:41:56,591 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2018-10-05 09:41:57,184 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2018-10-05 09:41:57,507 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2018-10-05 09:41:58,452 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2018-10-05 09:41:58,707 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2018-10-05 09:41:59,336 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2018-10-05 09:42:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:00,009 INFO L93 Difference]: Finished difference Result 5628 states and 36896 transitions. [2018-10-05 09:42:00,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-05 09:42:00,010 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2018-10-05 09:42:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:00,025 INFO L225 Difference]: With dead ends: 5628 [2018-10-05 09:42:00,025 INFO L226 Difference]: Without dead ends: 5628 [2018-10-05 09:42:00,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=752, Invalid=1798, Unknown=0, NotChecked=0, Total=2550 [2018-10-05 09:42:00,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2018-10-05 09:42:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 4376. [2018-10-05 09:42:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4376 states. [2018-10-05 09:42:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 30105 transitions. [2018-10-05 09:42:00,111 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 30105 transitions. Word has length 32 [2018-10-05 09:42:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:00,111 INFO L480 AbstractCegarLoop]: Abstraction has 4376 states and 30105 transitions. [2018-10-05 09:42:00,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:42:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 30105 transitions. [2018-10-05 09:42:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:00,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:00,113 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] [2018-10-05 09:42:00,113 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:00,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash -188303141, now seen corresponding path program 1 times [2018-10-05 09:42:00,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:00,593 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-05 09:42:00,719 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-05 09:42:00,855 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2018-10-05 09:42:01,010 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2018-10-05 09:42:01,196 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-10-05 09:42:01,376 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-05 09:42:01,554 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-05 09:42:01,737 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-05 09:42:01,912 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2018-10-05 09:42:02,082 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-10-05 09:42:02,236 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2018-10-05 09:42:02,379 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2018-10-05 09:42:02,538 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2018-10-05 09:42:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:02,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:02,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:42:02,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:42:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:42:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:42:02,797 INFO L87 Difference]: Start difference. First operand 4376 states and 30105 transitions. Second operand 28 states. [2018-10-05 09:42:03,378 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-05 09:42:03,588 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-05 09:42:03,851 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-05 09:42:04,128 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-05 09:42:04,447 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2018-10-05 09:42:04,777 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 87 [2018-10-05 09:42:05,249 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2018-10-05 09:42:05,688 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 92 [2018-10-05 09:42:06,083 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 90 [2018-10-05 09:42:06,444 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 90 [2018-10-05 09:42:06,787 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2018-10-05 09:42:07,171 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 93 [2018-10-05 09:42:07,549 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2018-10-05 09:42:07,901 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 89 [2018-10-05 09:42:08,246 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2018-10-05 09:42:08,626 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2018-10-05 09:42:09,097 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2018-10-05 09:42:09,646 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2018-10-05 09:42:10,042 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2018-10-05 09:42:10,412 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 91 [2018-10-05 09:42:10,802 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 91 [2018-10-05 09:42:11,192 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 88 [2018-10-05 09:42:12,223 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 89 [2018-10-05 09:42:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:12,817 INFO L93 Difference]: Finished difference Result 9338 states and 64049 transitions. [2018-10-05 09:42:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-05 09:42:12,818 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 32 [2018-10-05 09:42:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:12,844 INFO L225 Difference]: With dead ends: 9338 [2018-10-05 09:42:12,844 INFO L226 Difference]: Without dead ends: 9338 [2018-10-05 09:42:12,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=863, Invalid=2107, Unknown=0, NotChecked=0, Total=2970 [2018-10-05 09:42:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2018-10-05 09:42:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 6630. [2018-10-05 09:42:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6630 states. [2018-10-05 09:42:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6630 states to 6630 states and 45966 transitions. [2018-10-05 09:42:12,972 INFO L78 Accepts]: Start accepts. Automaton has 6630 states and 45966 transitions. Word has length 32 [2018-10-05 09:42:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:12,972 INFO L480 AbstractCegarLoop]: Abstraction has 6630 states and 45966 transitions. [2018-10-05 09:42:12,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:42:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states and 45966 transitions. [2018-10-05 09:42:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:12,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:12,975 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] [2018-10-05 09:42:12,976 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:12,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:12,976 INFO L82 PathProgramCache]: Analyzing trace with hash -188302893, now seen corresponding path program 1 times [2018-10-05 09:42:12,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:14,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:14,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:42:14,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:42:14,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:42:14,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:42:14,013 INFO L87 Difference]: Start difference. First operand 6630 states and 45966 transitions. Second operand 25 states. [2018-10-05 09:42:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:15,047 INFO L93 Difference]: Finished difference Result 6759 states and 46527 transitions. [2018-10-05 09:42:15,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:42:15,047 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2018-10-05 09:42:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:15,066 INFO L225 Difference]: With dead ends: 6759 [2018-10-05 09:42:15,066 INFO L226 Difference]: Without dead ends: 6759 [2018-10-05 09:42:15,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2018-10-05 09:42:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6759 states. [2018-10-05 09:42:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6759 to 6702. [2018-10-05 09:42:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6702 states. [2018-10-05 09:42:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6702 states to 6702 states and 46470 transitions. [2018-10-05 09:42:15,186 INFO L78 Accepts]: Start accepts. Automaton has 6702 states and 46470 transitions. Word has length 32 [2018-10-05 09:42:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:15,186 INFO L480 AbstractCegarLoop]: Abstraction has 6702 states and 46470 transitions. [2018-10-05 09:42:15,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:42:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6702 states and 46470 transitions. [2018-10-05 09:42:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:15,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:15,189 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] [2018-10-05 09:42:15,189 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:15,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:15,189 INFO L82 PathProgramCache]: Analyzing trace with hash -189135987, now seen corresponding path program 1 times [2018-10-05 09:42:15,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:15,888 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-05 09:42:16,134 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-05 09:42:16,278 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2018-10-05 09:42:16,418 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2018-10-05 09:42:16,639 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34 [2018-10-05 09:42:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:17,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:17,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:42:17,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:42:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:42:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:42:17,052 INFO L87 Difference]: Start difference. First operand 6702 states and 46470 transitions. Second operand 26 states. [2018-10-05 09:42:17,971 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2018-10-05 09:42:18,131 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2018-10-05 09:42:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:18,879 INFO L93 Difference]: Finished difference Result 8545 states and 58630 transitions. [2018-10-05 09:42:18,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:42:18,880 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2018-10-05 09:42:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:18,904 INFO L225 Difference]: With dead ends: 8545 [2018-10-05 09:42:18,904 INFO L226 Difference]: Without dead ends: 8545 [2018-10-05 09:42:18,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:42:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2018-10-05 09:42:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 7536. [2018-10-05 09:42:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7536 states. [2018-10-05 09:42:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7536 states to 7536 states and 52300 transitions. [2018-10-05 09:42:19,246 INFO L78 Accepts]: Start accepts. Automaton has 7536 states and 52300 transitions. Word has length 32 [2018-10-05 09:42:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:19,246 INFO L480 AbstractCegarLoop]: Abstraction has 7536 states and 52300 transitions. [2018-10-05 09:42:19,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:42:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7536 states and 52300 transitions. [2018-10-05 09:42:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:19,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:19,249 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] [2018-10-05 09:42:19,249 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:19,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash -188182675, now seen corresponding path program 1 times [2018-10-05 09:42:19,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:19,706 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-05 09:42:19,849 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2018-10-05 09:42:20,079 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2018-10-05 09:42:20,372 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2018-10-05 09:42:20,552 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2018-10-05 09:42:20,698 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2018-10-05 09:42:20,841 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2018-10-05 09:42:20,983 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2018-10-05 09:42:21,116 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2018-10-05 09:42:21,310 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 31 [2018-10-05 09:42:21,481 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 25 [2018-10-05 09:42:21,639 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 22 [2018-10-05 09:42:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:22,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:22,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:42:22,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:42:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:42:22,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:42:22,108 INFO L87 Difference]: Start difference. First operand 7536 states and 52300 transitions. Second operand 27 states. [2018-10-05 09:42:22,717 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2018-10-05 09:42:22,968 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-05 09:42:23,157 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-05 09:42:23,338 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-05 09:42:23,501 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-05 09:42:23,747 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2018-10-05 09:42:23,965 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-05 09:42:24,307 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-05 09:42:24,497 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-05 09:42:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:25,315 INFO L93 Difference]: Finished difference Result 9085 states and 62250 transitions. [2018-10-05 09:42:25,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-05 09:42:25,315 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2018-10-05 09:42:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:25,341 INFO L225 Difference]: With dead ends: 9085 [2018-10-05 09:42:25,342 INFO L226 Difference]: Without dead ends: 9085 [2018-10-05 09:42:25,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2018-10-05 09:42:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2018-10-05 09:42:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 5114. [2018-10-05 09:42:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5114 states. [2018-10-05 09:42:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 35337 transitions. [2018-10-05 09:42:25,451 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 35337 transitions. Word has length 32 [2018-10-05 09:42:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:25,451 INFO L480 AbstractCegarLoop]: Abstraction has 5114 states and 35337 transitions. [2018-10-05 09:42:25,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:42:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 35337 transitions. [2018-10-05 09:42:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:25,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:25,453 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] [2018-10-05 09:42:25,453 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:25,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash 268692101, now seen corresponding path program 3 times [2018-10-05 09:42:25,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:26,181 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-05 09:42:26,305 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-10-05 09:42:26,613 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2018-10-05 09:42:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:27,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:27,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:42:27,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:42:27,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:42:27,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:42:27,353 INFO L87 Difference]: Start difference. First operand 5114 states and 35337 transitions. Second operand 28 states. [2018-10-05 09:42:28,156 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 43 [2018-10-05 09:42:28,482 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2018-10-05 09:42:28,678 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-05 09:42:28,857 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2018-10-05 09:42:29,061 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2018-10-05 09:42:29,239 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 53 [2018-10-05 09:42:29,446 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2018-10-05 09:42:29,608 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 48 [2018-10-05 09:42:29,762 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2018-10-05 09:42:29,957 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2018-10-05 09:42:30,137 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2018-10-05 09:42:30,343 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2018-10-05 09:42:30,512 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2018-10-05 09:42:30,663 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2018-10-05 09:42:30,984 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-05 09:42:31,156 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 53 [2018-10-05 09:42:31,723 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-05 09:42:31,998 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2018-10-05 09:42:32,333 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 48 [2018-10-05 09:42:32,516 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2018-10-05 09:42:32,717 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 47 [2018-10-05 09:42:33,085 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2018-10-05 09:42:33,874 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2018-10-05 09:42:34,156 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-05 09:42:34,334 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2018-10-05 09:42:34,492 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2018-10-05 09:42:34,689 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 58 [2018-10-05 09:42:34,877 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2018-10-05 09:42:35,053 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 52 [2018-10-05 09:42:35,223 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 48 [2018-10-05 09:42:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:35,232 INFO L93 Difference]: Finished difference Result 7041 states and 47060 transitions. [2018-10-05 09:42:35,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-05 09:42:35,233 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 32 [2018-10-05 09:42:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:35,253 INFO L225 Difference]: With dead ends: 7041 [2018-10-05 09:42:35,253 INFO L226 Difference]: Without dead ends: 7041 [2018-10-05 09:42:35,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1363, Invalid=2927, Unknown=0, NotChecked=0, Total=4290 [2018-10-05 09:42:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2018-10-05 09:42:35,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 5262. [2018-10-05 09:42:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5262 states. [2018-10-05 09:42:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 36373 transitions. [2018-10-05 09:42:35,402 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 36373 transitions. Word has length 32 [2018-10-05 09:42:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:35,403 INFO L480 AbstractCegarLoop]: Abstraction has 5262 states and 36373 transitions. [2018-10-05 09:42:35,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:42:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 36373 transitions. [2018-10-05 09:42:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:35,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:35,405 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] [2018-10-05 09:42:35,405 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:35,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash 268691667, now seen corresponding path program 1 times [2018-10-05 09:42:35,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:35,882 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2018-10-05 09:42:36,404 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2018-10-05 09:42:36,564 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2018-10-05 09:42:36,701 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2018-10-05 09:42:36,984 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2018-10-05 09:42:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:37,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:37,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:42:37,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:42:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:42:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:42:37,945 INFO L87 Difference]: Start difference. First operand 5262 states and 36373 transitions. Second operand 27 states. [2018-10-05 09:42:38,646 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2018-10-05 09:42:38,819 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 51 [2018-10-05 09:42:39,134 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2018-10-05 09:42:39,347 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 58 [2018-10-05 09:42:39,566 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2018-10-05 09:42:39,771 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2018-10-05 09:42:39,993 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-05 09:42:40,201 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2018-10-05 09:42:40,383 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2018-10-05 09:42:40,555 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2018-10-05 09:42:40,769 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2018-10-05 09:42:40,969 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2018-10-05 09:42:41,193 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-10-05 09:42:41,388 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2018-10-05 09:42:41,574 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2018-10-05 09:42:41,781 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2018-10-05 09:42:41,968 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2018-10-05 09:42:42,345 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-10-05 09:42:42,621 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 60 [2018-10-05 09:42:42,835 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2018-10-05 09:42:43,029 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2018-10-05 09:42:43,333 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-05 09:42:43,705 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2018-10-05 09:42:43,891 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2018-10-05 09:42:44,275 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2018-10-05 09:42:44,675 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2018-10-05 09:42:45,189 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 48 [2018-10-05 09:42:45,524 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2018-10-05 09:42:45,725 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 55 [2018-10-05 09:42:45,936 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 60 [2018-10-05 09:42:46,143 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 58 [2018-10-05 09:42:46,331 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 54 [2018-10-05 09:42:46,567 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-05 09:42:46,795 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2018-10-05 09:42:46,985 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2018-10-05 09:42:47,173 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2018-10-05 09:42:47,368 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2018-10-05 09:42:47,561 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 56 [2018-10-05 09:42:47,768 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2018-10-05 09:42:48,000 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-05 09:42:48,231 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 60 [2018-10-05 09:42:48,458 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2018-10-05 09:42:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:48,586 INFO L93 Difference]: Finished difference Result 7724 states and 51787 transitions. [2018-10-05 09:42:48,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-05 09:42:48,586 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2018-10-05 09:42:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:48,609 INFO L225 Difference]: With dead ends: 7724 [2018-10-05 09:42:48,609 INFO L226 Difference]: Without dead ends: 7724 [2018-10-05 09:42:48,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1743, Invalid=3807, Unknown=0, NotChecked=0, Total=5550 [2018-10-05 09:42:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2018-10-05 09:42:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 5492. [2018-10-05 09:42:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5492 states. [2018-10-05 09:42:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 37983 transitions. [2018-10-05 09:42:48,743 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 37983 transitions. Word has length 32 [2018-10-05 09:42:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:48,743 INFO L480 AbstractCegarLoop]: Abstraction has 5492 states and 37983 transitions. [2018-10-05 09:42:48,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:42:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 37983 transitions. [2018-10-05 09:42:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:48,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:48,745 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] [2018-10-05 09:42:48,745 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:48,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash 268930429, now seen corresponding path program 1 times [2018-10-05 09:42:48,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:50,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:50,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:42:50,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:42:50,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:42:50,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:42:50,381 INFO L87 Difference]: Start difference. First operand 5492 states and 37983 transitions. Second operand 26 states. [2018-10-05 09:42:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:52,006 INFO L93 Difference]: Finished difference Result 6859 states and 46941 transitions. [2018-10-05 09:42:52,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:42:52,006 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2018-10-05 09:42:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:52,026 INFO L225 Difference]: With dead ends: 6859 [2018-10-05 09:42:52,026 INFO L226 Difference]: Without dead ends: 6859 [2018-10-05 09:42:52,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2018-10-05 09:42:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2018-10-05 09:42:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6290. [2018-10-05 09:42:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6290 states. [2018-10-05 09:42:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6290 states to 6290 states and 43553 transitions. [2018-10-05 09:42:52,146 INFO L78 Accepts]: Start accepts. Automaton has 6290 states and 43553 transitions. Word has length 32 [2018-10-05 09:42:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:52,146 INFO L480 AbstractCegarLoop]: Abstraction has 6290 states and 43553 transitions. [2018-10-05 09:42:52,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:42:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6290 states and 43553 transitions. [2018-10-05 09:42:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:52,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:52,149 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] [2018-10-05 09:42:52,149 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:52,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:52,149 INFO L82 PathProgramCache]: Analyzing trace with hash 268977708, now seen corresponding path program 1 times [2018-10-05 09:42:52,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:52,405 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:42:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:42:53,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:42:53,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:42:53,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:42:53,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:42:53,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:42:53,648 INFO L87 Difference]: Start difference. First operand 6290 states and 43553 transitions. Second operand 24 states. [2018-10-05 09:42:54,474 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2018-10-05 09:42:54,723 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2018-10-05 09:42:54,875 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2018-10-05 09:42:55,159 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-05 09:42:55,459 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2018-10-05 09:42:55,873 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-05 09:42:56,013 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2018-10-05 09:42:56,323 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2018-10-05 09:42:56,586 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2018-10-05 09:42:56,865 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2018-10-05 09:42:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:42:57,505 INFO L93 Difference]: Finished difference Result 12151 states and 83543 transitions. [2018-10-05 09:42:57,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-05 09:42:57,506 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2018-10-05 09:42:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:42:57,543 INFO L225 Difference]: With dead ends: 12151 [2018-10-05 09:42:57,543 INFO L226 Difference]: Without dead ends: 12151 [2018-10-05 09:42:57,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=667, Invalid=1495, Unknown=0, NotChecked=0, Total=2162 [2018-10-05 09:42:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2018-10-05 09:42:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 11734. [2018-10-05 09:42:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11734 states. [2018-10-05 09:42:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 81750 transitions. [2018-10-05 09:42:57,766 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 81750 transitions. Word has length 32 [2018-10-05 09:42:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:42:57,766 INFO L480 AbstractCegarLoop]: Abstraction has 11734 states and 81750 transitions. [2018-10-05 09:42:57,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:42:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 81750 transitions. [2018-10-05 09:42:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:42:57,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:42:57,769 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] [2018-10-05 09:42:57,769 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:42:57,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:42:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash 269883741, now seen corresponding path program 1 times [2018-10-05 09:42:57,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:42:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:42:58,156 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2018-10-05 09:42:58,330 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2018-10-05 09:42:58,484 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-10-05 09:42:58,686 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2018-10-05 09:42:58,915 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2018-10-05 09:42:59,254 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 65 [2018-10-05 09:42:59,498 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-05 09:42:59,626 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-05 09:43:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:00,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:00,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:43:00,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:43:00,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:43:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:43:00,493 INFO L87 Difference]: Start difference. First operand 11734 states and 81750 transitions. Second operand 27 states. [2018-10-05 09:43:01,366 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-05 09:43:01,520 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-05 09:43:01,817 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-05 09:43:02,094 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2018-10-05 09:43:02,309 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-05 09:43:02,504 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-05 09:43:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:03,296 INFO L93 Difference]: Finished difference Result 17605 states and 122443 transitions. [2018-10-05 09:43:03,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-05 09:43:03,296 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2018-10-05 09:43:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:03,353 INFO L225 Difference]: With dead ends: 17605 [2018-10-05 09:43:03,353 INFO L226 Difference]: Without dead ends: 17605 [2018-10-05 09:43:03,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2018-10-05 09:43:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17605 states. [2018-10-05 09:43:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17605 to 16034. [2018-10-05 09:43:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16034 states. [2018-10-05 09:43:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16034 states to 16034 states and 111809 transitions. [2018-10-05 09:43:03,692 INFO L78 Accepts]: Start accepts. Automaton has 16034 states and 111809 transitions. Word has length 32 [2018-10-05 09:43:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:03,692 INFO L480 AbstractCegarLoop]: Abstraction has 16034 states and 111809 transitions. [2018-10-05 09:43:03,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:43:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 16034 states and 111809 transitions. [2018-10-05 09:43:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:43:03,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:03,695 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] [2018-10-05 09:43:03,695 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:03,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:03,695 INFO L82 PathProgramCache]: Analyzing trace with hash 315425849, now seen corresponding path program 1 times [2018-10-05 09:43:03,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:03,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:03,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-05 09:43:03,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-05 09:43:03,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-05 09:43:03,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-10-05 09:43:03,918 INFO L87 Difference]: Start difference. First operand 16034 states and 111809 transitions. Second operand 16 states. [2018-10-05 09:43:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:04,515 INFO L93 Difference]: Finished difference Result 16155 states and 112220 transitions. [2018-10-05 09:43:04,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-05 09:43:04,515 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2018-10-05 09:43:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:04,568 INFO L225 Difference]: With dead ends: 16155 [2018-10-05 09:43:04,568 INFO L226 Difference]: Without dead ends: 16155 [2018-10-05 09:43:04,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2018-10-05 09:43:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16155 states. [2018-10-05 09:43:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16155 to 16050. [2018-10-05 09:43:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16050 states. [2018-10-05 09:43:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16050 states to 16050 states and 111921 transitions. [2018-10-05 09:43:04,884 INFO L78 Accepts]: Start accepts. Automaton has 16050 states and 111921 transitions. Word has length 32 [2018-10-05 09:43:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:04,884 INFO L480 AbstractCegarLoop]: Abstraction has 16050 states and 111921 transitions. [2018-10-05 09:43:04,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-05 09:43:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 16050 states and 111921 transitions. [2018-10-05 09:43:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:43:04,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:04,887 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] [2018-10-05 09:43:04,887 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:04,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash -531804372, now seen corresponding path program 2 times [2018-10-05 09:43:04,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:05,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:05,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:43:05,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:43:05,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:43:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:43:05,695 INFO L87 Difference]: Start difference. First operand 16050 states and 111921 transitions. Second operand 24 states. [2018-10-05 09:43:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:08,156 INFO L93 Difference]: Finished difference Result 27757 states and 192958 transitions. [2018-10-05 09:43:08,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-05 09:43:08,156 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2018-10-05 09:43:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:08,242 INFO L225 Difference]: With dead ends: 27757 [2018-10-05 09:43:08,242 INFO L226 Difference]: Without dead ends: 27757 [2018-10-05 09:43:08,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=393, Invalid=1013, Unknown=0, NotChecked=0, Total=1406 [2018-10-05 09:43:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27757 states. [2018-10-05 09:43:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27757 to 22478. [2018-10-05 09:43:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22478 states. [2018-10-05 09:43:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22478 states to 22478 states and 156983 transitions. [2018-10-05 09:43:08,660 INFO L78 Accepts]: Start accepts. Automaton has 22478 states and 156983 transitions. Word has length 32 [2018-10-05 09:43:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:08,661 INFO L480 AbstractCegarLoop]: Abstraction has 22478 states and 156983 transitions. [2018-10-05 09:43:08,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:43:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 22478 states and 156983 transitions. [2018-10-05 09:43:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:43:08,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:08,663 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] [2018-10-05 09:43:08,664 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:08,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash 487200755, now seen corresponding path program 1 times [2018-10-05 09:43:08,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:08,979 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2018-10-05 09:43:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:09,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:09,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-05 09:43:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-05 09:43:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-05 09:43:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:43:09,613 INFO L87 Difference]: Start difference. First operand 22478 states and 156983 transitions. Second operand 19 states. [2018-10-05 09:43:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:10,981 INFO L93 Difference]: Finished difference Result 22638 states and 157475 transitions. [2018-10-05 09:43:10,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:43:10,982 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2018-10-05 09:43:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:11,057 INFO L225 Difference]: With dead ends: 22638 [2018-10-05 09:43:11,057 INFO L226 Difference]: Without dead ends: 22638 [2018-10-05 09:43:11,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:43:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22638 states. [2018-10-05 09:43:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22638 to 22482. [2018-10-05 09:43:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22482 states. [2018-10-05 09:43:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 157011 transitions. [2018-10-05 09:43:11,510 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 157011 transitions. Word has length 32 [2018-10-05 09:43:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:11,510 INFO L480 AbstractCegarLoop]: Abstraction has 22482 states and 157011 transitions. [2018-10-05 09:43:11,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-05 09:43:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 157011 transitions. [2018-10-05 09:43:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-05 09:43:11,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:11,514 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] [2018-10-05 09:43:11,514 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:11,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:11,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1200800290, now seen corresponding path program 1 times [2018-10-05 09:43:11,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:11,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:11,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-05 09:43:11,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-05 09:43:11,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-05 09:43:11,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-05 09:43:11,660 INFO L87 Difference]: Start difference. First operand 22482 states and 157011 transitions. Second operand 14 states. [2018-10-05 09:43:11,985 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-05 09:43:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:12,439 INFO L93 Difference]: Finished difference Result 22615 states and 157588 transitions. [2018-10-05 09:43:12,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-05 09:43:12,439 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-10-05 09:43:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:12,512 INFO L225 Difference]: With dead ends: 22615 [2018-10-05 09:43:12,512 INFO L226 Difference]: Without dead ends: 22615 [2018-10-05 09:43:12,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-10-05 09:43:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22615 states. [2018-10-05 09:43:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22615 to 22541. [2018-10-05 09:43:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22541 states. [2018-10-05 09:43:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22541 states to 22541 states and 157300 transitions. [2018-10-05 09:43:12,928 INFO L78 Accepts]: Start accepts. Automaton has 22541 states and 157300 transitions. Word has length 32 [2018-10-05 09:43:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:12,928 INFO L480 AbstractCegarLoop]: Abstraction has 22541 states and 157300 transitions. [2018-10-05 09:43:12,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-05 09:43:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22541 states and 157300 transitions. [2018-10-05 09:43:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-05 09:43:12,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:12,931 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] [2018-10-05 09:43:12,931 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:12,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:12,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2116324641, now seen corresponding path program 1 times [2018-10-05 09:43:12,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:13,447 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2018-10-05 09:43:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:43:13,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:13,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:43:13,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:43:13,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:43:13,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:43:13,898 INFO L87 Difference]: Start difference. First operand 22541 states and 157300 transitions. Second operand 27 states. [2018-10-05 09:43:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:15,012 INFO L93 Difference]: Finished difference Result 22576 states and 157328 transitions. [2018-10-05 09:43:15,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:43:15,013 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2018-10-05 09:43:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:15,087 INFO L225 Difference]: With dead ends: 22576 [2018-10-05 09:43:15,087 INFO L226 Difference]: Without dead ends: 22576 [2018-10-05 09:43:15,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-10-05 09:43:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22576 states. [2018-10-05 09:43:15,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22576 to 3478. [2018-10-05 09:43:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3478 states. [2018-10-05 09:43:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 23710 transitions. [2018-10-05 09:43:15,318 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 23710 transitions. Word has length 33 [2018-10-05 09:43:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:15,318 INFO L480 AbstractCegarLoop]: Abstraction has 3478 states and 23710 transitions. [2018-10-05 09:43:15,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:43:15,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 23710 transitions. [2018-10-05 09:43:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-05 09:43:15,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:15,320 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] [2018-10-05 09:43:15,320 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:15,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:15,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2136986974, now seen corresponding path program 1 times [2018-10-05 09:43:15,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:43:16,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:16,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-05 09:43:16,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:43:16,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:43:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:43:16,080 INFO L87 Difference]: Start difference. First operand 3478 states and 23710 transitions. Second operand 25 states. [2018-10-05 09:43:16,915 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-05 09:43:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:17,196 INFO L93 Difference]: Finished difference Result 4231 states and 28569 transitions. [2018-10-05 09:43:17,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:43:17,196 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 33 [2018-10-05 09:43:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:17,208 INFO L225 Difference]: With dead ends: 4231 [2018-10-05 09:43:17,208 INFO L226 Difference]: Without dead ends: 4231 [2018-10-05 09:43:17,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=264, Invalid=926, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:43:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-10-05 09:43:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 3896. [2018-10-05 09:43:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3896 states. [2018-10-05 09:43:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 26636 transitions. [2018-10-05 09:43:17,274 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 26636 transitions. Word has length 33 [2018-10-05 09:43:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:17,274 INFO L480 AbstractCegarLoop]: Abstraction has 3896 states and 26636 transitions. [2018-10-05 09:43:17,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:43:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 26636 transitions. [2018-10-05 09:43:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-05 09:43:17,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:17,277 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] [2018-10-05 09:43:17,277 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:17,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:17,277 INFO L82 PathProgramCache]: Analyzing trace with hash -697094599, now seen corresponding path program 1 times [2018-10-05 09:43:17,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:17,934 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-10-05 09:43:18,069 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-05 09:43:18,252 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-05 09:43:18,536 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2018-10-05 09:43:18,804 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2018-10-05 09:43:19,114 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2018-10-05 09:43:19,347 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 49 [2018-10-05 09:43:19,554 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 40 [2018-10-05 09:43:19,739 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 36 [2018-10-05 09:43:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:43:20,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:20,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2018-10-05 09:43:20,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:43:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:43:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:43:20,245 INFO L87 Difference]: Start difference. First operand 3896 states and 26636 transitions. Second operand 27 states. [2018-10-05 09:43:21,087 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2018-10-05 09:43:21,262 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 48 [2018-10-05 09:43:21,508 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 51 [2018-10-05 09:43:21,822 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 51 [2018-10-05 09:43:22,319 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 56 [2018-10-05 09:43:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:22,613 INFO L93 Difference]: Finished difference Result 4919 states and 33443 transitions. [2018-10-05 09:43:22,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:43:22,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2018-10-05 09:43:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:22,627 INFO L225 Difference]: With dead ends: 4919 [2018-10-05 09:43:22,627 INFO L226 Difference]: Without dead ends: 4919 [2018-10-05 09:43:22,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2018-10-05 09:43:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-10-05 09:43:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4683. [2018-10-05 09:43:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4683 states. [2018-10-05 09:43:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 32085 transitions. [2018-10-05 09:43:22,709 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 32085 transitions. Word has length 33 [2018-10-05 09:43:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:22,709 INFO L480 AbstractCegarLoop]: Abstraction has 4683 states and 32085 transitions. [2018-10-05 09:43:22,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:43:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 32085 transitions. [2018-10-05 09:43:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-05 09:43:22,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:22,712 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] [2018-10-05 09:43:22,712 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:22,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:22,712 INFO L82 PathProgramCache]: Analyzing trace with hash 618062409, now seen corresponding path program 1 times [2018-10-05 09:43:22,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:23,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:23,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-05 09:43:23,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-05 09:43:23,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-05 09:43:23,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2018-10-05 09:43:23,404 INFO L87 Difference]: Start difference. First operand 4683 states and 32085 transitions. Second operand 18 states. [2018-10-05 09:43:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:24,769 INFO L93 Difference]: Finished difference Result 5012 states and 33400 transitions. [2018-10-05 09:43:24,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-05 09:43:24,770 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-10-05 09:43:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:24,783 INFO L225 Difference]: With dead ends: 5012 [2018-10-05 09:43:24,783 INFO L226 Difference]: Without dead ends: 5012 [2018-10-05 09:43:24,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:43:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2018-10-05 09:43:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 4691. [2018-10-05 09:43:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4691 states. [2018-10-05 09:43:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 32141 transitions. [2018-10-05 09:43:24,866 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 32141 transitions. Word has length 33 [2018-10-05 09:43:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:24,866 INFO L480 AbstractCegarLoop]: Abstraction has 4691 states and 32141 transitions. [2018-10-05 09:43:24,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-05 09:43:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 32141 transitions. [2018-10-05 09:43:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-05 09:43:24,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:24,869 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] [2018-10-05 09:43:24,869 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:24,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:24,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2107967553, now seen corresponding path program 1 times [2018-10-05 09:43:24,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:43:25,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:25,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-10-05 09:43:25,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-05 09:43:25,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-05 09:43:25,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:43:25,205 INFO L87 Difference]: Start difference. First operand 4691 states and 32141 transitions. Second operand 19 states. [2018-10-05 09:43:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:25,767 INFO L93 Difference]: Finished difference Result 4901 states and 33407 transitions. [2018-10-05 09:43:25,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-05 09:43:25,767 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 33 [2018-10-05 09:43:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:25,781 INFO L225 Difference]: With dead ends: 4901 [2018-10-05 09:43:25,781 INFO L226 Difference]: Without dead ends: 4901 [2018-10-05 09:43:25,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:43:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2018-10-05 09:43:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4867. [2018-10-05 09:43:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4867 states. [2018-10-05 09:43:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 33373 transitions. [2018-10-05 09:43:25,865 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 33373 transitions. Word has length 33 [2018-10-05 09:43:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:25,865 INFO L480 AbstractCegarLoop]: Abstraction has 4867 states and 33373 transitions. [2018-10-05 09:43:25,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-05 09:43:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 33373 transitions. [2018-10-05 09:43:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-05 09:43:25,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:25,868 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] [2018-10-05 09:43:25,868 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:25,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:25,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1429896552, now seen corresponding path program 1 times [2018-10-05 09:43:25,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:26,264 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2018-10-05 09:43:26,473 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2018-10-05 09:43:26,706 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2018-10-05 09:43:26,869 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 19 [2018-10-05 09:43:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:27,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:27,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-05 09:43:27,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-05 09:43:27,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-05 09:43:27,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-10-05 09:43:27,009 INFO L87 Difference]: Start difference. First operand 4867 states and 33373 transitions. Second operand 15 states. [2018-10-05 09:43:27,406 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-10-05 09:43:27,561 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2018-10-05 09:43:28,416 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2018-10-05 09:43:28,600 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2018-10-05 09:43:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:29,066 INFO L93 Difference]: Finished difference Result 5057 states and 33757 transitions. [2018-10-05 09:43:29,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:43:29,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2018-10-05 09:43:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:29,080 INFO L225 Difference]: With dead ends: 5057 [2018-10-05 09:43:29,080 INFO L226 Difference]: Without dead ends: 5057 [2018-10-05 09:43:29,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=260, Invalid=552, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:43:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2018-10-05 09:43:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 4889. [2018-10-05 09:43:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4889 states. [2018-10-05 09:43:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4889 states to 4889 states and 33398 transitions. [2018-10-05 09:43:29,166 INFO L78 Accepts]: Start accepts. Automaton has 4889 states and 33398 transitions. Word has length 33 [2018-10-05 09:43:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:29,167 INFO L480 AbstractCegarLoop]: Abstraction has 4889 states and 33398 transitions. [2018-10-05 09:43:29,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-05 09:43:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4889 states and 33398 transitions. [2018-10-05 09:43:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:29,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:29,170 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] [2018-10-05 09:43:29,170 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:29,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:29,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1982038489, now seen corresponding path program 1 times [2018-10-05 09:43:29,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:29,604 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2018-10-05 09:43:29,844 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2018-10-05 09:43:29,967 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-10-05 09:43:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-05 09:43:30,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:30,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:43:30,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:43:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:43:30,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:43:30,389 INFO L87 Difference]: Start difference. First operand 4889 states and 33398 transitions. Second operand 24 states. [2018-10-05 09:43:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:31,744 INFO L93 Difference]: Finished difference Result 5211 states and 35315 transitions. [2018-10-05 09:43:31,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:43:31,744 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 34 [2018-10-05 09:43:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:31,759 INFO L225 Difference]: With dead ends: 5211 [2018-10-05 09:43:31,759 INFO L226 Difference]: Without dead ends: 5211 [2018-10-05 09:43:31,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2018-10-05 09:43:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2018-10-05 09:43:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 4287. [2018-10-05 09:43:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4287 states. [2018-10-05 09:43:31,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 29207 transitions. [2018-10-05 09:43:31,997 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 29207 transitions. Word has length 34 [2018-10-05 09:43:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:31,998 INFO L480 AbstractCegarLoop]: Abstraction has 4287 states and 29207 transitions. [2018-10-05 09:43:31,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:43:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 29207 transitions. [2018-10-05 09:43:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:32,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:32,001 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] [2018-10-05 09:43:32,001 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:32,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:32,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1020470410, now seen corresponding path program 1 times [2018-10-05 09:43:32,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:43:32,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:32,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-05 09:43:32,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-05 09:43:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-05 09:43:32,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:43:32,502 INFO L87 Difference]: Start difference. First operand 4287 states and 29207 transitions. Second operand 19 states. [2018-10-05 09:43:33,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:33,187 INFO L93 Difference]: Finished difference Result 4340 states and 29259 transitions. [2018-10-05 09:43:33,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:43:33,187 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2018-10-05 09:43:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:33,200 INFO L225 Difference]: With dead ends: 4340 [2018-10-05 09:43:33,200 INFO L226 Difference]: Without dead ends: 4340 [2018-10-05 09:43:33,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:43:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2018-10-05 09:43:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 4285. [2018-10-05 09:43:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4285 states. [2018-10-05 09:43:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 29204 transitions. [2018-10-05 09:43:33,275 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 29204 transitions. Word has length 34 [2018-10-05 09:43:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:33,275 INFO L480 AbstractCegarLoop]: Abstraction has 4285 states and 29204 transitions. [2018-10-05 09:43:33,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-05 09:43:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 29204 transitions. [2018-10-05 09:43:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:33,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:33,279 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] [2018-10-05 09:43:33,279 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:33,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:33,279 INFO L82 PathProgramCache]: Analyzing trace with hash -135095969, now seen corresponding path program 1 times [2018-10-05 09:43:33,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:43:33,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:33,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-05 09:43:33,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-05 09:43:33,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-05 09:43:33,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-10-05 09:43:33,519 INFO L87 Difference]: Start difference. First operand 4285 states and 29204 transitions. Second operand 15 states. [2018-10-05 09:43:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:34,272 INFO L93 Difference]: Finished difference Result 4775 states and 32367 transitions. [2018-10-05 09:43:34,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-05 09:43:34,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-10-05 09:43:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:34,286 INFO L225 Difference]: With dead ends: 4775 [2018-10-05 09:43:34,286 INFO L226 Difference]: Without dead ends: 4775 [2018-10-05 09:43:34,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:43:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2018-10-05 09:43:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4732. [2018-10-05 09:43:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4732 states. [2018-10-05 09:43:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 32327 transitions. [2018-10-05 09:43:34,366 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 32327 transitions. Word has length 34 [2018-10-05 09:43:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:34,367 INFO L480 AbstractCegarLoop]: Abstraction has 4732 states and 32327 transitions. [2018-10-05 09:43:34,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-05 09:43:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 32327 transitions. [2018-10-05 09:43:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:34,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:34,371 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] [2018-10-05 09:43:34,371 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:34,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:34,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1266466080, now seen corresponding path program 1 times [2018-10-05 09:43:34,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:43:34,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:34,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-05 09:43:34,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-05 09:43:34,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-05 09:43:34,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-10-05 09:43:34,758 INFO L87 Difference]: Start difference. First operand 4732 states and 32327 transitions. Second operand 20 states. [2018-10-05 09:43:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:35,868 INFO L93 Difference]: Finished difference Result 8872 states and 59864 transitions. [2018-10-05 09:43:35,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:43:35,868 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2018-10-05 09:43:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:35,894 INFO L225 Difference]: With dead ends: 8872 [2018-10-05 09:43:35,894 INFO L226 Difference]: Without dead ends: 8872 [2018-10-05 09:43:35,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2018-10-05 09:43:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8872 states. [2018-10-05 09:43:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8872 to 8570. [2018-10-05 09:43:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8570 states. [2018-10-05 09:43:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8570 states to 8570 states and 59229 transitions. [2018-10-05 09:43:36,056 INFO L78 Accepts]: Start accepts. Automaton has 8570 states and 59229 transitions. Word has length 34 [2018-10-05 09:43:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:36,056 INFO L480 AbstractCegarLoop]: Abstraction has 8570 states and 59229 transitions. [2018-10-05 09:43:36,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-05 09:43:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8570 states and 59229 transitions. [2018-10-05 09:43:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:36,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:36,061 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] [2018-10-05 09:43:36,061 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:36,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1609355493, now seen corresponding path program 1 times [2018-10-05 09:43:36,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:43:37,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:37,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:43:37,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:43:37,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:43:37,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:43:37,205 INFO L87 Difference]: Start difference. First operand 8570 states and 59229 transitions. Second operand 25 states. [2018-10-05 09:43:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:39,902 INFO L93 Difference]: Finished difference Result 13063 states and 88417 transitions. [2018-10-05 09:43:39,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-05 09:43:39,903 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 34 [2018-10-05 09:43:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:39,943 INFO L225 Difference]: With dead ends: 13063 [2018-10-05 09:43:39,943 INFO L226 Difference]: Without dead ends: 13063 [2018-10-05 09:43:39,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=671, Invalid=1585, Unknown=0, NotChecked=0, Total=2256 [2018-10-05 09:43:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13063 states. [2018-10-05 09:43:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13063 to 9102. [2018-10-05 09:43:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9102 states. [2018-10-05 09:43:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9102 states to 9102 states and 62962 transitions. [2018-10-05 09:43:40,145 INFO L78 Accepts]: Start accepts. Automaton has 9102 states and 62962 transitions. Word has length 34 [2018-10-05 09:43:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:40,145 INFO L480 AbstractCegarLoop]: Abstraction has 9102 states and 62962 transitions. [2018-10-05 09:43:40,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:43:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9102 states and 62962 transitions. [2018-10-05 09:43:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:40,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:40,151 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] [2018-10-05 09:43:40,151 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:40,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1655803634, now seen corresponding path program 1 times [2018-10-05 09:43:40,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:43:40,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:40,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-05 09:43:40,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-05 09:43:40,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-05 09:43:40,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-10-05 09:43:40,824 INFO L87 Difference]: Start difference. First operand 9102 states and 62962 transitions. Second operand 21 states. [2018-10-05 09:43:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:42,070 INFO L93 Difference]: Finished difference Result 9179 states and 63037 transitions. [2018-10-05 09:43:42,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-05 09:43:42,070 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 34 [2018-10-05 09:43:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:42,096 INFO L225 Difference]: With dead ends: 9179 [2018-10-05 09:43:42,097 INFO L226 Difference]: Without dead ends: 9179 [2018-10-05 09:43:42,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=704, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:43:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9179 states. [2018-10-05 09:43:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9179 to 9102. [2018-10-05 09:43:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9102 states. [2018-10-05 09:43:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9102 states to 9102 states and 62962 transitions. [2018-10-05 09:43:42,269 INFO L78 Accepts]: Start accepts. Automaton has 9102 states and 62962 transitions. Word has length 34 [2018-10-05 09:43:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:42,269 INFO L480 AbstractCegarLoop]: Abstraction has 9102 states and 62962 transitions. [2018-10-05 09:43:42,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-05 09:43:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9102 states and 62962 transitions. [2018-10-05 09:43:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:42,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:42,275 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] [2018-10-05 09:43:42,275 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:42,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash 808573413, now seen corresponding path program 2 times [2018-10-05 09:43:42,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:43:43,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:43,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:43:43,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:43:43,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:43:43,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:43:43,434 INFO L87 Difference]: Start difference. First operand 9102 states and 62962 transitions. Second operand 26 states. [2018-10-05 09:43:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:46,064 INFO L93 Difference]: Finished difference Result 15388 states and 104375 transitions. [2018-10-05 09:43:46,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-05 09:43:46,065 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 34 [2018-10-05 09:43:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:46,114 INFO L225 Difference]: With dead ends: 15388 [2018-10-05 09:43:46,114 INFO L226 Difference]: Without dead ends: 15388 [2018-10-05 09:43:46,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=575, Invalid=1495, Unknown=0, NotChecked=0, Total=2070 [2018-10-05 09:43:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15388 states. [2018-10-05 09:43:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15388 to 13270. [2018-10-05 09:43:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13270 states. [2018-10-05 09:43:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 92210 transitions. [2018-10-05 09:43:46,702 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 92210 transitions. Word has length 34 [2018-10-05 09:43:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:46,702 INFO L480 AbstractCegarLoop]: Abstraction has 13270 states and 92210 transitions. [2018-10-05 09:43:46,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:43:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 92210 transitions. [2018-10-05 09:43:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:46,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:46,708 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] [2018-10-05 09:43:46,708 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:46,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1827578540, now seen corresponding path program 1 times [2018-10-05 09:43:46,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:43:47,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:43:47,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-05 09:43:47,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-05 09:43:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-05 09:43:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:43:47,741 INFO L87 Difference]: Start difference. First operand 13270 states and 92210 transitions. Second operand 22 states. [2018-10-05 09:43:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:48,780 INFO L93 Difference]: Finished difference Result 13504 states and 93009 transitions. [2018-10-05 09:43:48,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:43:48,780 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 34 [2018-10-05 09:43:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:48,822 INFO L225 Difference]: With dead ends: 13504 [2018-10-05 09:43:48,823 INFO L226 Difference]: Without dead ends: 13504 [2018-10-05 09:43:48,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:43:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13504 states. [2018-10-05 09:43:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13504 to 13270. [2018-10-05 09:43:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13270 states. [2018-10-05 09:43:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 92210 transitions. [2018-10-05 09:43:49,088 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 92210 transitions. Word has length 34 [2018-10-05 09:43:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:49,088 INFO L480 AbstractCegarLoop]: Abstraction has 13270 states and 92210 transitions. [2018-10-05 09:43:49,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-05 09:43:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 92210 transitions. [2018-10-05 09:43:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:49,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:49,094 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] [2018-10-05 09:43:49,094 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:49,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash 968704010, now seen corresponding path program 1 times [2018-10-05 09:43:49,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:49,905 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2018-10-05 09:43:50,102 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-05 09:43:50,338 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-10-05 09:43:50,498 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2018-10-05 09:43:50,653 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2018-10-05 09:43:50,803 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2018-10-05 09:43:50,955 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 30 [2018-10-05 09:43:51,094 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2018-10-05 09:43:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:43:51,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:51,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-05 09:43:51,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:43:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:43:51,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:43:51,283 INFO L87 Difference]: Start difference. First operand 13270 states and 92210 transitions. Second operand 24 states. [2018-10-05 09:43:51,996 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-05 09:43:52,208 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-05 09:43:52,438 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2018-10-05 09:43:52,644 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-05 09:43:52,880 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2018-10-05 09:43:53,195 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2018-10-05 09:43:53,422 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-05 09:43:53,664 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-05 09:43:53,900 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2018-10-05 09:43:54,463 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2018-10-05 09:43:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:55,171 INFO L93 Difference]: Finished difference Result 13538 states and 92752 transitions. [2018-10-05 09:43:55,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-05 09:43:55,172 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 34 [2018-10-05 09:43:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:55,683 INFO L225 Difference]: With dead ends: 13538 [2018-10-05 09:43:55,683 INFO L226 Difference]: Without dead ends: 13538 [2018-10-05 09:43:55,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=433, Invalid=1127, Unknown=0, NotChecked=0, Total=1560 [2018-10-05 09:43:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13538 states. [2018-10-05 09:43:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13538 to 13316. [2018-10-05 09:43:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13316 states. [2018-10-05 09:43:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13316 states to 13316 states and 92532 transitions. [2018-10-05 09:43:55,938 INFO L78 Accepts]: Start accepts. Automaton has 13316 states and 92532 transitions. Word has length 34 [2018-10-05 09:43:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:55,939 INFO L480 AbstractCegarLoop]: Abstraction has 13316 states and 92532 transitions. [2018-10-05 09:43:55,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:43:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13316 states and 92532 transitions. [2018-10-05 09:43:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:55,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:55,944 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] [2018-10-05 09:43:55,945 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:55,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1753789221, now seen corresponding path program 1 times [2018-10-05 09:43:55,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:43:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:43:56,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:43:56,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-10-05 09:43:56,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-05 09:43:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-05 09:43:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2018-10-05 09:43:56,710 INFO L87 Difference]: Start difference. First operand 13316 states and 92532 transitions. Second operand 20 states. [2018-10-05 09:43:57,541 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-10-05 09:43:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:43:59,268 INFO L93 Difference]: Finished difference Result 13666 states and 93688 transitions. [2018-10-05 09:43:59,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-05 09:43:59,268 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2018-10-05 09:43:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:43:59,310 INFO L225 Difference]: With dead ends: 13666 [2018-10-05 09:43:59,310 INFO L226 Difference]: Without dead ends: 13666 [2018-10-05 09:43:59,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=425, Invalid=981, Unknown=0, NotChecked=0, Total=1406 [2018-10-05 09:43:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13666 states. [2018-10-05 09:43:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13666 to 13344. [2018-10-05 09:43:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13344 states. [2018-10-05 09:43:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 92728 transitions. [2018-10-05 09:43:59,557 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 92728 transitions. Word has length 34 [2018-10-05 09:43:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:43:59,557 INFO L480 AbstractCegarLoop]: Abstraction has 13344 states and 92728 transitions. [2018-10-05 09:43:59,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-05 09:43:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 92728 transitions. [2018-10-05 09:43:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:43:59,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:43:59,562 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] [2018-10-05 09:43:59,562 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:43:59,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:43:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -570736756, now seen corresponding path program 1 times [2018-10-05 09:43:59,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:43:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:44:00,092 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2018-10-05 09:44:00,243 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2018-10-05 09:44:00,490 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2018-10-05 09:44:00,655 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-05 09:44:00,812 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-05 09:44:00,966 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-05 09:44:01,280 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2018-10-05 09:44:01,477 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 34 [2018-10-05 09:44:01,659 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2018-10-05 09:44:01,817 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2018-10-05 09:44:02,001 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 26 [2018-10-05 09:44:02,136 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 16 [2018-10-05 09:44:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:44:02,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:44:02,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-05 09:44:02,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-05 09:44:02,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-05 09:44:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:44:02,438 INFO L87 Difference]: Start difference. First operand 13344 states and 92728 transitions. Second operand 29 states. [2018-10-05 09:44:03,360 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-05 09:44:03,502 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-05 09:44:04,085 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-05 09:44:04,224 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2018-10-05 09:44:04,381 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-10-05 09:44:04,537 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2018-10-05 09:44:04,815 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2018-10-05 09:44:04,999 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-05 09:44:05,133 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2018-10-05 09:44:05,390 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-05 09:44:05,791 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-05 09:44:06,007 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2018-10-05 09:44:06,138 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-05 09:44:06,371 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-05 09:44:06,815 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2018-10-05 09:44:06,993 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-05 09:44:07,175 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-05 09:44:07,607 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-10-05 09:44:07,754 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2018-10-05 09:44:07,997 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-05 09:44:08,177 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2018-10-05 09:44:08,456 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-05 09:44:08,959 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-05 09:44:09,188 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2018-10-05 09:44:09,796 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-05 09:44:09,970 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-05 09:44:10,166 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2018-10-05 09:44:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:44:10,367 INFO L93 Difference]: Finished difference Result 25003 states and 171820 transitions. [2018-10-05 09:44:10,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-05 09:44:10,367 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 34 [2018-10-05 09:44:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:44:10,451 INFO L225 Difference]: With dead ends: 25003 [2018-10-05 09:44:10,451 INFO L226 Difference]: Without dead ends: 25003 [2018-10-05 09:44:10,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1576, Invalid=3394, Unknown=0, NotChecked=0, Total=4970 [2018-10-05 09:44:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25003 states. [2018-10-05 09:44:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25003 to 18720. [2018-10-05 09:44:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18720 states. [2018-10-05 09:44:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18720 states to 18720 states and 130460 transitions. [2018-10-05 09:44:10,857 INFO L78 Accepts]: Start accepts. Automaton has 18720 states and 130460 transitions. Word has length 34 [2018-10-05 09:44:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:44:10,857 INFO L480 AbstractCegarLoop]: Abstraction has 18720 states and 130460 transitions. [2018-10-05 09:44:10,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-05 09:44:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 18720 states and 130460 transitions. [2018-10-05 09:44:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:44:10,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:44:10,863 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] [2018-10-05 09:44:10,863 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:44:10,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:44:10,864 INFO L82 PathProgramCache]: Analyzing trace with hash 361372363, now seen corresponding path program 1 times [2018-10-05 09:44:10,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:44:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:44:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:44:11,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:44:11,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-05 09:44:11,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-05 09:44:11,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-05 09:44:11,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-10-05 09:44:11,138 INFO L87 Difference]: Start difference. First operand 18720 states and 130460 transitions. Second operand 15 states. [2018-10-05 09:44:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:44:12,022 INFO L93 Difference]: Finished difference Result 18952 states and 131242 transitions. [2018-10-05 09:44:12,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-05 09:44:12,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-10-05 09:44:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:44:12,079 INFO L225 Difference]: With dead ends: 18952 [2018-10-05 09:44:12,079 INFO L226 Difference]: Without dead ends: 18952 [2018-10-05 09:44:12,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:44:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18952 states. [2018-10-05 09:44:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18952 to 18720. [2018-10-05 09:44:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18720 states. [2018-10-05 09:44:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18720 states to 18720 states and 130460 transitions. [2018-10-05 09:44:13,001 INFO L78 Accepts]: Start accepts. Automaton has 18720 states and 130460 transitions. Word has length 34 [2018-10-05 09:44:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:44:13,001 INFO L480 AbstractCegarLoop]: Abstraction has 18720 states and 130460 transitions. [2018-10-05 09:44:13,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-05 09:44:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 18720 states and 130460 transitions. [2018-10-05 09:44:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:44:13,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:44:13,008 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] [2018-10-05 09:44:13,008 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:44:13,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:44:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash 514371212, now seen corresponding path program 2 times [2018-10-05 09:44:13,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:44:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:44:13,552 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-05 09:44:13,803 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2018-10-05 09:44:14,094 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2018-10-05 09:44:14,389 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2018-10-05 09:44:14,716 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2018-10-05 09:44:15,075 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2018-10-05 09:44:15,404 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2018-10-05 09:44:15,729 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-05 09:44:16,074 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2018-10-05 09:44:16,380 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2018-10-05 09:44:16,705 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 57 [2018-10-05 09:44:16,997 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2018-10-05 09:44:17,225 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2018-10-05 09:44:17,427 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 30 [2018-10-05 09:44:17,654 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2018-10-05 09:44:17,885 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 28 [2018-10-05 09:44:18,043 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 21 [2018-10-05 09:44:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:44:18,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:44:18,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:44:18,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:44:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:44:18,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:44:18,361 INFO L87 Difference]: Start difference. First operand 18720 states and 130460 transitions. Second operand 30 states. [2018-10-05 09:44:18,951 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2018-10-05 09:44:19,174 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2018-10-05 09:44:19,502 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2018-10-05 09:44:19,842 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 71 [2018-10-05 09:44:20,225 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2018-10-05 09:44:20,624 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 76 [2018-10-05 09:44:21,282 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2018-10-05 09:44:21,749 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 85 [2018-10-05 09:44:22,191 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 82 [2018-10-05 09:44:23,077 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 83 [2018-10-05 09:44:23,555 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 84 [2018-10-05 09:44:24,062 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 87 [2018-10-05 09:44:24,505 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 81 [2018-10-05 09:44:24,937 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 79 [2018-10-05 09:44:25,406 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2018-10-05 09:44:25,855 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 82 [2018-10-05 09:44:26,326 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 84 [2018-10-05 09:44:26,804 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 83 [2018-10-05 09:44:27,249 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 80 [2018-10-05 09:44:27,702 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2018-10-05 09:44:28,146 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 83 [2018-10-05 09:44:28,656 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2018-10-05 09:44:29,172 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2018-10-05 09:44:29,720 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2018-10-05 09:44:30,305 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 81 [2018-10-05 09:44:30,760 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 85 [2018-10-05 09:44:31,439 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 80 [2018-10-05 09:44:31,923 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 88 [2018-10-05 09:44:32,429 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 84 [2018-10-05 09:44:32,882 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 80 [2018-10-05 09:44:33,607 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 81 [2018-10-05 09:44:35,358 WARN L178 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 85 [2018-10-05 09:44:36,011 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 83 [2018-10-05 09:44:36,605 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 82 [2018-10-05 09:44:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:44:36,788 INFO L93 Difference]: Finished difference Result 21386 states and 145571 transitions. [2018-10-05 09:44:36,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-05 09:44:36,788 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2018-10-05 09:44:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:44:36,858 INFO L225 Difference]: With dead ends: 21386 [2018-10-05 09:44:36,858 INFO L226 Difference]: Without dead ends: 21386 [2018-10-05 09:44:36,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=1388, Invalid=3304, Unknown=0, NotChecked=0, Total=4692 [2018-10-05 09:44:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21386 states. [2018-10-05 09:44:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21386 to 18924. [2018-10-05 09:44:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18924 states. [2018-10-05 09:44:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18924 states to 18924 states and 131888 transitions. [2018-10-05 09:44:37,248 INFO L78 Accepts]: Start accepts. Automaton has 18924 states and 131888 transitions. Word has length 34 [2018-10-05 09:44:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:44:37,248 INFO L480 AbstractCegarLoop]: Abstraction has 18924 states and 131888 transitions. [2018-10-05 09:44:37,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:44:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18924 states and 131888 transitions. [2018-10-05 09:44:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:44:37,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:44:37,255 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] [2018-10-05 09:44:37,255 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:44:37,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:44:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash 515026614, now seen corresponding path program 1 times [2018-10-05 09:44:37,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:44:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:44:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:44:38,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:44:38,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:44:38,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:44:38,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:44:38,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:44:38,821 INFO L87 Difference]: Start difference. First operand 18924 states and 131888 transitions. Second operand 26 states. [2018-10-05 09:44:42,855 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-05 09:44:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:44:43,568 INFO L93 Difference]: Finished difference Result 22262 states and 152812 transitions. [2018-10-05 09:44:43,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-05 09:44:43,568 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 34 [2018-10-05 09:44:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:44:43,642 INFO L225 Difference]: With dead ends: 22262 [2018-10-05 09:44:43,643 INFO L226 Difference]: Without dead ends: 22262 [2018-10-05 09:44:43,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1106, Invalid=2434, Unknown=0, NotChecked=0, Total=3540 [2018-10-05 09:44:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22262 states. [2018-10-05 09:44:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22262 to 19198. [2018-10-05 09:44:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19198 states. [2018-10-05 09:44:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19198 states to 19198 states and 133806 transitions. [2018-10-05 09:44:44,722 INFO L78 Accepts]: Start accepts. Automaton has 19198 states and 133806 transitions. Word has length 34 [2018-10-05 09:44:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:44:44,722 INFO L480 AbstractCegarLoop]: Abstraction has 19198 states and 133806 transitions. [2018-10-05 09:44:44,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:44:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19198 states and 133806 transitions. [2018-10-05 09:44:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:44:44,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:44:44,729 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] [2018-10-05 09:44:44,729 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:44:44,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:44:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash 514133132, now seen corresponding path program 3 times [2018-10-05 09:44:44,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:44:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:44:45,375 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2018-10-05 09:44:45,547 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2018-10-05 09:44:45,747 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2018-10-05 09:44:45,928 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2018-10-05 09:44:46,181 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-05 09:44:46,431 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2018-10-05 09:44:46,678 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2018-10-05 09:44:46,966 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2018-10-05 09:44:47,288 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2018-10-05 09:44:47,614 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 36 [2018-10-05 09:44:47,872 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 30 [2018-10-05 09:44:48,062 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 28 [2018-10-05 09:44:48,273 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 27 [2018-10-05 09:44:48,456 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 24 [2018-10-05 09:44:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:44:48,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:44:48,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-05 09:44:48,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-05 09:44:48,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-05 09:44:48,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:44:48,768 INFO L87 Difference]: Start difference. First operand 19198 states and 133806 transitions. Second operand 29 states. [2018-10-05 09:44:49,273 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2018-10-05 09:44:49,532 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 57 [2018-10-05 09:44:49,892 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-05 09:44:50,066 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2018-10-05 09:44:50,244 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2018-10-05 09:44:50,431 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2018-10-05 09:44:50,674 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2018-10-05 09:44:50,858 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2018-10-05 09:44:51,007 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2018-10-05 09:44:51,228 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2018-10-05 09:44:51,465 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2018-10-05 09:44:51,675 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 53 [2018-10-05 09:44:51,954 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2018-10-05 09:44:52,290 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2018-10-05 09:44:52,565 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2018-10-05 09:44:52,890 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 52 [2018-10-05 09:44:53,085 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 52 [2018-10-05 09:44:53,325 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2018-10-05 09:44:53,708 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2018-10-05 09:44:53,957 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2018-10-05 09:44:54,141 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 57 [2018-10-05 09:44:54,384 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2018-10-05 09:44:54,622 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 54 [2018-10-05 09:44:54,938 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2018-10-05 09:44:55,143 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2018-10-05 09:44:55,336 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 55 [2018-10-05 09:44:55,525 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2018-10-05 09:44:55,926 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2018-10-05 09:44:56,118 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 51 [2018-10-05 09:44:56,273 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2018-10-05 09:44:56,492 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 54 [2018-10-05 09:44:57,369 WARN L178 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2018-10-05 09:44:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:44:57,474 INFO L93 Difference]: Finished difference Result 24727 states and 170226 transitions. [2018-10-05 09:44:57,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-05 09:44:57,475 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 34 [2018-10-05 09:44:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:44:57,556 INFO L225 Difference]: With dead ends: 24727 [2018-10-05 09:44:57,557 INFO L226 Difference]: Without dead ends: 24727 [2018-10-05 09:44:57,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1207, Invalid=2825, Unknown=0, NotChecked=0, Total=4032 [2018-10-05 09:44:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24727 states. [2018-10-05 09:44:57,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24727 to 20112. [2018-10-05 09:44:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20112 states. [2018-10-05 09:44:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20112 states to 20112 states and 140204 transitions. [2018-10-05 09:44:58,007 INFO L78 Accepts]: Start accepts. Automaton has 20112 states and 140204 transitions. Word has length 34 [2018-10-05 09:44:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:44:58,007 INFO L480 AbstractCegarLoop]: Abstraction has 20112 states and 140204 transitions. [2018-10-05 09:44:58,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-05 09:44:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 20112 states and 140204 transitions. [2018-10-05 09:44:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:44:58,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:44:58,014 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] [2018-10-05 09:44:58,014 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:44:58,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:44:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1086358412, now seen corresponding path program 4 times [2018-10-05 09:44:58,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:44:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:44:58,474 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-05 09:44:58,617 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-10-05 09:44:58,783 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2018-10-05 09:44:58,921 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-05 09:44:59,132 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2018-10-05 09:44:59,270 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-05 09:44:59,449 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2018-10-05 09:44:59,621 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-05 09:44:59,800 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-05 09:45:00,001 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-05 09:45:00,183 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2018-10-05 09:45:00,386 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-05 09:45:00,587 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2018-10-05 09:45:00,775 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-05 09:45:00,949 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-05 09:45:01,184 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2018-10-05 09:45:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:01,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:01,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:45:01,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:45:01,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:45:01,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:45:01,706 INFO L87 Difference]: Start difference. First operand 20112 states and 140204 transitions. Second operand 30 states. [2018-10-05 09:45:02,316 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-05 09:45:02,490 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-05 09:45:02,707 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2018-10-05 09:45:02,965 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2018-10-05 09:45:03,280 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-05 09:45:03,702 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 85 [2018-10-05 09:45:04,270 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2018-10-05 09:45:04,771 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 94 [2018-10-05 09:45:05,217 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 91 [2018-10-05 09:45:05,722 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 95 [2018-10-05 09:45:06,196 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 94 [2018-10-05 09:45:06,679 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 88 [2018-10-05 09:45:07,136 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 91 [2018-10-05 09:45:07,534 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2018-10-05 09:45:08,011 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 90 [2018-10-05 09:45:08,449 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 90 [2018-10-05 09:45:08,941 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 94 [2018-10-05 09:45:09,875 WARN L178 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 92 [2018-10-05 09:45:10,264 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2018-10-05 09:45:10,728 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 89 [2018-10-05 09:45:11,275 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2018-10-05 09:45:11,879 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 95 [2018-10-05 09:45:12,398 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 94 [2018-10-05 09:45:12,891 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2018-10-05 09:45:13,519 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 94 [2018-10-05 09:45:13,976 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 95 [2018-10-05 09:45:14,432 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 85 [2018-10-05 09:45:14,811 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 94 [2018-10-05 09:45:15,276 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 84 [2018-10-05 09:45:16,132 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 95 [2018-10-05 09:45:16,545 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 91 [2018-10-05 09:45:17,045 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 95 [2018-10-05 09:45:17,488 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2018-10-05 09:45:17,928 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 95 [2018-10-05 09:45:18,390 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2018-10-05 09:45:18,653 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-05 09:45:19,408 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 95 [2018-10-05 09:45:19,800 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2018-10-05 09:45:20,051 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2018-10-05 09:45:20,505 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 87 [2018-10-05 09:45:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:21,074 INFO L93 Difference]: Finished difference Result 26825 states and 183668 transitions. [2018-10-05 09:45:21,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-05 09:45:21,074 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2018-10-05 09:45:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:21,166 INFO L225 Difference]: With dead ends: 26825 [2018-10-05 09:45:21,167 INFO L226 Difference]: Without dead ends: 26825 [2018-10-05 09:45:21,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=1596, Invalid=3806, Unknown=0, NotChecked=0, Total=5402 [2018-10-05 09:45:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26825 states. [2018-10-05 09:45:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26825 to 20242. [2018-10-05 09:45:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20242 states. [2018-10-05 09:45:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20242 states to 20242 states and 141114 transitions. [2018-10-05 09:45:22,094 INFO L78 Accepts]: Start accepts. Automaton has 20242 states and 141114 transitions. Word has length 34 [2018-10-05 09:45:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:22,094 INFO L480 AbstractCegarLoop]: Abstraction has 20242 states and 141114 transitions. [2018-10-05 09:45:22,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:45:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20242 states and 141114 transitions. [2018-10-05 09:45:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:22,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:22,101 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] [2018-10-05 09:45:22,101 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:22,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1086715532, now seen corresponding path program 5 times [2018-10-05 09:45:22,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:22,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:22,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:45:22,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:45:22,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:45:22,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:45:22,915 INFO L87 Difference]: Start difference. First operand 20242 states and 141114 transitions. Second operand 25 states. [2018-10-05 09:45:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:26,196 INFO L93 Difference]: Finished difference Result 26546 states and 183500 transitions. [2018-10-05 09:45:26,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-05 09:45:26,196 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 34 [2018-10-05 09:45:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:26,287 INFO L225 Difference]: With dead ends: 26546 [2018-10-05 09:45:26,287 INFO L226 Difference]: Without dead ends: 26546 [2018-10-05 09:45:26,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=661, Invalid=1501, Unknown=0, NotChecked=0, Total=2162 [2018-10-05 09:45:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26546 states. [2018-10-05 09:45:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26546 to 15348. [2018-10-05 09:45:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15348 states. [2018-10-05 09:45:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15348 states to 15348 states and 106803 transitions. [2018-10-05 09:45:26,719 INFO L78 Accepts]: Start accepts. Automaton has 15348 states and 106803 transitions. Word has length 34 [2018-10-05 09:45:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:26,719 INFO L480 AbstractCegarLoop]: Abstraction has 15348 states and 106803 transitions. [2018-10-05 09:45:26,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:45:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15348 states and 106803 transitions. [2018-10-05 09:45:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:26,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:26,725 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] [2018-10-05 09:45:26,725 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:26,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:26,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1544711365, now seen corresponding path program 3 times [2018-10-05 09:45:26,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:27,078 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:45:27,669 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-10-05 09:45:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:45:28,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:28,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:45:28,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:45:28,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:45:28,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:45:28,959 INFO L87 Difference]: Start difference. First operand 15348 states and 106803 transitions. Second operand 23 states. [2018-10-05 09:45:29,350 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2018-10-05 09:45:29,572 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2018-10-05 09:45:29,775 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-05 09:45:29,996 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2018-10-05 09:45:30,149 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2018-10-05 09:45:30,496 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-10-05 09:45:30,694 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2018-10-05 09:45:30,945 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2018-10-05 09:45:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:31,334 INFO L93 Difference]: Finished difference Result 17721 states and 121937 transitions. [2018-10-05 09:45:31,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-05 09:45:31,334 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 34 [2018-10-05 09:45:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:31,391 INFO L225 Difference]: With dead ends: 17721 [2018-10-05 09:45:31,391 INFO L226 Difference]: Without dead ends: 17721 [2018-10-05 09:45:31,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2018-10-05 09:45:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2018-10-05 09:45:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 17076. [2018-10-05 09:45:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17076 states. [2018-10-05 09:45:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 118949 transitions. [2018-10-05 09:45:31,728 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 118949 transitions. Word has length 34 [2018-10-05 09:45:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:31,729 INFO L480 AbstractCegarLoop]: Abstraction has 17076 states and 118949 transitions. [2018-10-05 09:45:31,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:45:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 118949 transitions. [2018-10-05 09:45:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:31,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:31,734 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] [2018-10-05 09:45:31,734 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:31,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:31,735 INFO L82 PathProgramCache]: Analyzing trace with hash 744108031, now seen corresponding path program 1 times [2018-10-05 09:45:31,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:32,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:32,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:45:32,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:45:32,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:45:32,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:45:32,651 INFO L87 Difference]: Start difference. First operand 17076 states and 118949 transitions. Second operand 25 states. [2018-10-05 09:45:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:36,101 INFO L93 Difference]: Finished difference Result 18702 states and 128105 transitions. [2018-10-05 09:45:36,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-05 09:45:36,101 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 34 [2018-10-05 09:45:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:36,160 INFO L225 Difference]: With dead ends: 18702 [2018-10-05 09:45:36,160 INFO L226 Difference]: Without dead ends: 18702 [2018-10-05 09:45:36,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=704, Invalid=1552, Unknown=0, NotChecked=0, Total=2256 [2018-10-05 09:45:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18702 states. [2018-10-05 09:45:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18702 to 17420. [2018-10-05 09:45:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17420 states. [2018-10-05 09:45:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17420 states to 17420 states and 121377 transitions. [2018-10-05 09:45:36,477 INFO L78 Accepts]: Start accepts. Automaton has 17420 states and 121377 transitions. Word has length 34 [2018-10-05 09:45:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:36,478 INFO L480 AbstractCegarLoop]: Abstraction has 17420 states and 121377 transitions. [2018-10-05 09:45:36,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:45:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 17420 states and 121377 transitions. [2018-10-05 09:45:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:36,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:36,483 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] [2018-10-05 09:45:36,483 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:36,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1660192654, now seen corresponding path program 1 times [2018-10-05 09:45:36,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:37,370 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2018-10-05 09:45:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:37,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:37,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:45:37,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:45:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:45:37,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:45:37,745 INFO L87 Difference]: Start difference. First operand 17420 states and 121377 transitions. Second operand 26 states. [2018-10-05 09:45:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:38,692 INFO L93 Difference]: Finished difference Result 17464 states and 121369 transitions. [2018-10-05 09:45:38,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:45:38,692 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 34 [2018-10-05 09:45:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:38,747 INFO L225 Difference]: With dead ends: 17464 [2018-10-05 09:45:38,748 INFO L226 Difference]: Without dead ends: 17464 [2018-10-05 09:45:38,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:45:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17464 states. [2018-10-05 09:45:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17464 to 14386. [2018-10-05 09:45:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14386 states. [2018-10-05 09:45:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14386 states to 14386 states and 100087 transitions. [2018-10-05 09:45:39,039 INFO L78 Accepts]: Start accepts. Automaton has 14386 states and 100087 transitions. Word has length 34 [2018-10-05 09:45:39,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:39,039 INFO L480 AbstractCegarLoop]: Abstraction has 14386 states and 100087 transitions. [2018-10-05 09:45:39,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:45:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14386 states and 100087 transitions. [2018-10-05 09:45:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:39,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:39,044 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] [2018-10-05 09:45:39,044 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:39,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:39,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1716199734, now seen corresponding path program 2 times [2018-10-05 09:45:39,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:40,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:40,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:45:40,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:45:40,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:45:40,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:45:40,237 INFO L87 Difference]: Start difference. First operand 14386 states and 100087 transitions. Second operand 26 states. [2018-10-05 09:45:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:42,315 INFO L93 Difference]: Finished difference Result 19905 states and 137903 transitions. [2018-10-05 09:45:42,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-05 09:45:42,315 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 34 [2018-10-05 09:45:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:42,379 INFO L225 Difference]: With dead ends: 19905 [2018-10-05 09:45:42,380 INFO L226 Difference]: Without dead ends: 19905 [2018-10-05 09:45:42,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=444, Invalid=1196, Unknown=0, NotChecked=0, Total=1640 [2018-10-05 09:45:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19905 states. [2018-10-05 09:45:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19905 to 7552. [2018-10-05 09:45:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7552 states. [2018-10-05 09:45:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7552 states to 7552 states and 52166 transitions. [2018-10-05 09:45:42,630 INFO L78 Accepts]: Start accepts. Automaton has 7552 states and 52166 transitions. Word has length 34 [2018-10-05 09:45:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:42,630 INFO L480 AbstractCegarLoop]: Abstraction has 7552 states and 52166 transitions. [2018-10-05 09:45:42,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:45:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7552 states and 52166 transitions. [2018-10-05 09:45:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:42,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:42,633 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] [2018-10-05 09:45:42,634 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:42,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1716486271, now seen corresponding path program 2 times [2018-10-05 09:45:42,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:43,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:43,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:45:43,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:45:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:45:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:45:43,494 INFO L87 Difference]: Start difference. First operand 7552 states and 52166 transitions. Second operand 23 states. [2018-10-05 09:45:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:44,788 INFO L93 Difference]: Finished difference Result 12128 states and 82855 transitions. [2018-10-05 09:45:44,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-05 09:45:44,789 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 34 [2018-10-05 09:45:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:44,826 INFO L225 Difference]: With dead ends: 12128 [2018-10-05 09:45:44,826 INFO L226 Difference]: Without dead ends: 12128 [2018-10-05 09:45:44,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2018-10-05 09:45:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12128 states. [2018-10-05 09:45:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12128 to 11484. [2018-10-05 09:45:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11484 states. [2018-10-05 09:45:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 79779 transitions. [2018-10-05 09:45:45,174 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 79779 transitions. Word has length 34 [2018-10-05 09:45:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:45,174 INFO L480 AbstractCegarLoop]: Abstraction has 11484 states and 79779 transitions. [2018-10-05 09:45:45,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:45:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 79779 transitions. [2018-10-05 09:45:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:45,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:45,178 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] [2018-10-05 09:45:45,178 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:45,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash 904059882, now seen corresponding path program 1 times [2018-10-05 09:45:45,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:45:45,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:45,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-05 09:45:45,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-05 09:45:45,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-05 09:45:45,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2018-10-05 09:45:45,792 INFO L87 Difference]: Start difference. First operand 11484 states and 79779 transitions. Second operand 20 states. [2018-10-05 09:45:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:46,680 INFO L93 Difference]: Finished difference Result 11579 states and 79944 transitions. [2018-10-05 09:45:46,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-05 09:45:46,681 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2018-10-05 09:45:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:46,713 INFO L225 Difference]: With dead ends: 11579 [2018-10-05 09:45:46,714 INFO L226 Difference]: Without dead ends: 11579 [2018-10-05 09:45:46,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:45:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11579 states. [2018-10-05 09:45:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11579 to 11484. [2018-10-05 09:45:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11484 states. [2018-10-05 09:45:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 79779 transitions. [2018-10-05 09:45:46,934 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 79779 transitions. Word has length 34 [2018-10-05 09:45:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:46,934 INFO L480 AbstractCegarLoop]: Abstraction has 11484 states and 79779 transitions. [2018-10-05 09:45:46,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-05 09:45:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 79779 transitions. [2018-10-05 09:45:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:46,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:46,938 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] [2018-10-05 09:45:46,938 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:46,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -8324865, now seen corresponding path program 3 times [2018-10-05 09:45:46,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:47,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:47,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:45:47,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:45:47,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:45:47,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:45:47,681 INFO L87 Difference]: Start difference. First operand 11484 states and 79779 transitions. Second operand 24 states. [2018-10-05 09:45:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:49,024 INFO L93 Difference]: Finished difference Result 14372 states and 99196 transitions. [2018-10-05 09:45:49,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:45:49,025 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 34 [2018-10-05 09:45:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:49,069 INFO L225 Difference]: With dead ends: 14372 [2018-10-05 09:45:49,069 INFO L226 Difference]: Without dead ends: 14372 [2018-10-05 09:45:49,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2018-10-05 09:45:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2018-10-05 09:45:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 14018. [2018-10-05 09:45:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14018 states. [2018-10-05 09:45:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14018 states to 14018 states and 97560 transitions. [2018-10-05 09:45:49,331 INFO L78 Accepts]: Start accepts. Automaton has 14018 states and 97560 transitions. Word has length 34 [2018-10-05 09:45:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:49,331 INFO L480 AbstractCegarLoop]: Abstraction has 14018 states and 97560 transitions. [2018-10-05 09:45:49,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:45:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 14018 states and 97560 transitions. [2018-10-05 09:45:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:49,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:49,335 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:45:49,335 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:49,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:49,335 INFO L82 PathProgramCache]: Analyzing trace with hash 208885288, now seen corresponding path program 1 times [2018-10-05 09:45:49,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:45:50,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:50,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-05 09:45:50,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-05 09:45:50,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-05 09:45:50,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:45:50,096 INFO L87 Difference]: Start difference. First operand 14018 states and 97560 transitions. Second operand 19 states. [2018-10-05 09:45:51,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:51,109 INFO L93 Difference]: Finished difference Result 14190 states and 98295 transitions. [2018-10-05 09:45:51,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:45:51,110 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2018-10-05 09:45:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:51,154 INFO L225 Difference]: With dead ends: 14190 [2018-10-05 09:45:51,154 INFO L226 Difference]: Without dead ends: 14190 [2018-10-05 09:45:51,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:45:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14190 states. [2018-10-05 09:45:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14190 to 14112. [2018-10-05 09:45:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14112 states. [2018-10-05 09:45:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14112 states to 14112 states and 98217 transitions. [2018-10-05 09:45:51,429 INFO L78 Accepts]: Start accepts. Automaton has 14112 states and 98217 transitions. Word has length 34 [2018-10-05 09:45:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:51,429 INFO L480 AbstractCegarLoop]: Abstraction has 14112 states and 98217 transitions. [2018-10-05 09:45:51,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-05 09:45:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states and 98217 transitions. [2018-10-05 09:45:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:51,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:51,433 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] [2018-10-05 09:45:51,433 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:51,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:51,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1409463392, now seen corresponding path program 2 times [2018-10-05 09:45:51,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:51,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:51,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-05 09:45:51,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-05 09:45:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-05 09:45:51,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-10-05 09:45:51,757 INFO L87 Difference]: Start difference. First operand 14112 states and 98217 transitions. Second operand 19 states. [2018-10-05 09:45:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:53,124 INFO L93 Difference]: Finished difference Result 22792 states and 157271 transitions. [2018-10-05 09:45:53,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-05 09:45:53,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2018-10-05 09:45:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:53,194 INFO L225 Difference]: With dead ends: 22792 [2018-10-05 09:45:53,194 INFO L226 Difference]: Without dead ends: 22792 [2018-10-05 09:45:53,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=389, Invalid=801, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:45:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22792 states. [2018-10-05 09:45:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22792 to 22416. [2018-10-05 09:45:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22416 states. [2018-10-05 09:45:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 156515 transitions. [2018-10-05 09:45:53,652 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 156515 transitions. Word has length 34 [2018-10-05 09:45:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:53,652 INFO L480 AbstractCegarLoop]: Abstraction has 22416 states and 156515 transitions. [2018-10-05 09:45:53,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-05 09:45:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 156515 transitions. [2018-10-05 09:45:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:53,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:53,657 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] [2018-10-05 09:45:53,657 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:53,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1523979996, now seen corresponding path program 1 times [2018-10-05 09:45:53,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:54,111 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-10-05 09:45:54,799 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-05 09:45:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:45:55,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:45:55,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-05 09:45:55,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-05 09:45:55,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-05 09:45:55,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-10-05 09:45:55,179 INFO L87 Difference]: Start difference. First operand 22416 states and 156515 transitions. Second operand 20 states. [2018-10-05 09:45:55,591 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-10-05 09:45:55,787 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2018-10-05 09:45:55,963 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2018-10-05 09:45:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:56,446 INFO L93 Difference]: Finished difference Result 22681 states and 157443 transitions. [2018-10-05 09:45:56,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-05 09:45:56,447 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2018-10-05 09:45:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:56,524 INFO L225 Difference]: With dead ends: 22681 [2018-10-05 09:45:56,524 INFO L226 Difference]: Without dead ends: 22681 [2018-10-05 09:45:56,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:45:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22681 states. [2018-10-05 09:45:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22681 to 22432. [2018-10-05 09:45:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22432 states. [2018-10-05 09:45:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22432 states to 22432 states and 156627 transitions. [2018-10-05 09:45:56,959 INFO L78 Accepts]: Start accepts. Automaton has 22432 states and 156627 transitions. Word has length 34 [2018-10-05 09:45:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:56,960 INFO L480 AbstractCegarLoop]: Abstraction has 22432 states and 156627 transitions. [2018-10-05 09:45:56,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-05 09:45:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 22432 states and 156627 transitions. [2018-10-05 09:45:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:56,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:56,966 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] [2018-10-05 09:45:56,967 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:56,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash -696208429, now seen corresponding path program 1 times [2018-10-05 09:45:56,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:57,316 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:45:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:45:57,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:45:57,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-05 09:45:57,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-05 09:45:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-05 09:45:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-10-05 09:45:57,734 INFO L87 Difference]: Start difference. First operand 22432 states and 156627 transitions. Second operand 16 states. [2018-10-05 09:45:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:58,547 INFO L93 Difference]: Finished difference Result 22690 states and 157427 transitions. [2018-10-05 09:45:58,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-05 09:45:58,547 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2018-10-05 09:45:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:58,623 INFO L225 Difference]: With dead ends: 22690 [2018-10-05 09:45:58,623 INFO L226 Difference]: Without dead ends: 22690 [2018-10-05 09:45:58,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:45:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22690 states. [2018-10-05 09:45:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22690 to 22436. [2018-10-05 09:45:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22436 states. [2018-10-05 09:45:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 156655 transitions. [2018-10-05 09:45:59,085 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 156655 transitions. Word has length 34 [2018-10-05 09:45:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:45:59,085 INFO L480 AbstractCegarLoop]: Abstraction has 22436 states and 156655 transitions. [2018-10-05 09:45:59,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-05 09:45:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 156655 transitions. [2018-10-05 09:45:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-05 09:45:59,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:45:59,091 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] [2018-10-05 09:45:59,091 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:45:59,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:45:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1377120028, now seen corresponding path program 1 times [2018-10-05 09:45:59,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:45:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:45:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:45:59,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:45:59,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-05 09:45:59,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-05 09:45:59,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-05 09:45:59,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-05 09:45:59,206 INFO L87 Difference]: Start difference. First operand 22436 states and 156655 transitions. Second operand 9 states. [2018-10-05 09:45:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:45:59,655 INFO L93 Difference]: Finished difference Result 22506 states and 156808 transitions. [2018-10-05 09:45:59,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-05 09:45:59,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-10-05 09:45:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:45:59,731 INFO L225 Difference]: With dead ends: 22506 [2018-10-05 09:45:59,732 INFO L226 Difference]: Without dead ends: 22506 [2018-10-05 09:45:59,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-10-05 09:45:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22506 states. [2018-10-05 09:46:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22506 to 22446. [2018-10-05 09:46:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22446 states. [2018-10-05 09:46:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22446 states to 22446 states and 156676 transitions. [2018-10-05 09:46:00,188 INFO L78 Accepts]: Start accepts. Automaton has 22446 states and 156676 transitions. Word has length 34 [2018-10-05 09:46:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:00,188 INFO L480 AbstractCegarLoop]: Abstraction has 22446 states and 156676 transitions. [2018-10-05 09:46:00,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-05 09:46:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 22446 states and 156676 transitions. [2018-10-05 09:46:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:00,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:00,193 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] [2018-10-05 09:46:00,194 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:00,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash 711364881, now seen corresponding path program 1 times [2018-10-05 09:46:00,194 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-05 09:46:01,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:46:01,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:46:01,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:46:01,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:46:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:46:01,169 INFO L87 Difference]: Start difference. First operand 22446 states and 156676 transitions. Second operand 25 states. [2018-10-05 09:46:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:02,693 INFO L93 Difference]: Finished difference Result 25492 states and 177324 transitions. [2018-10-05 09:46:02,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:46:02,693 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 35 [2018-10-05 09:46:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:02,783 INFO L225 Difference]: With dead ends: 25492 [2018-10-05 09:46:02,783 INFO L226 Difference]: Without dead ends: 25492 [2018-10-05 09:46:02,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2018-10-05 09:46:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25492 states. [2018-10-05 09:46:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25492 to 24274. [2018-10-05 09:46:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24274 states. [2018-10-05 09:46:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24274 states to 24274 states and 169487 transitions. [2018-10-05 09:46:03,686 INFO L78 Accepts]: Start accepts. Automaton has 24274 states and 169487 transitions. Word has length 35 [2018-10-05 09:46:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:03,686 INFO L480 AbstractCegarLoop]: Abstraction has 24274 states and 169487 transitions. [2018-10-05 09:46:03,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:46:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 24274 states and 169487 transitions. [2018-10-05 09:46:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:03,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:03,692 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] [2018-10-05 09:46:03,692 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:03,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:03,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2140015956, now seen corresponding path program 1 times [2018-10-05 09:46:03,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:46:04,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:46:04,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-05 09:46:04,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:46:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:46:04,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:46:04,456 INFO L87 Difference]: Start difference. First operand 24274 states and 169487 transitions. Second operand 24 states. [2018-10-05 09:46:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:06,328 INFO L93 Difference]: Finished difference Result 26421 states and 183628 transitions. [2018-10-05 09:46:06,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-05 09:46:06,328 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2018-10-05 09:46:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:06,421 INFO L225 Difference]: With dead ends: 26421 [2018-10-05 09:46:06,421 INFO L226 Difference]: Without dead ends: 26421 [2018-10-05 09:46:06,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2018-10-05 09:46:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26421 states. [2018-10-05 09:46:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26421 to 26262. [2018-10-05 09:46:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26262 states. [2018-10-05 09:46:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26262 states to 26262 states and 183439 transitions. [2018-10-05 09:46:06,999 INFO L78 Accepts]: Start accepts. Automaton has 26262 states and 183439 transitions. Word has length 35 [2018-10-05 09:46:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:06,999 INFO L480 AbstractCegarLoop]: Abstraction has 26262 states and 183439 transitions. [2018-10-05 09:46:06,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:46:07,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26262 states and 183439 transitions. [2018-10-05 09:46:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:07,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:07,005 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] [2018-10-05 09:46:07,005 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:07,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1345050615, now seen corresponding path program 1 times [2018-10-05 09:46:07,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-05 09:46:07,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:46:07,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2018-10-05 09:46:07,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:46:07,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:46:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:46:07,926 INFO L87 Difference]: Start difference. First operand 26262 states and 183439 transitions. Second operand 26 states. [2018-10-05 09:46:08,786 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-10-05 09:46:08,996 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-05 09:46:09,186 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-05 09:46:09,528 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-05 09:46:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:10,272 INFO L93 Difference]: Finished difference Result 51168 states and 356865 transitions. [2018-10-05 09:46:10,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-05 09:46:10,272 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 35 [2018-10-05 09:46:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:10,473 INFO L225 Difference]: With dead ends: 51168 [2018-10-05 09:46:10,473 INFO L226 Difference]: Without dead ends: 51168 [2018-10-05 09:46:10,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-10-05 09:46:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51168 states. [2018-10-05 09:46:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51168 to 50938. [2018-10-05 09:46:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50938 states. [2018-10-05 09:46:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50938 states to 50938 states and 356617 transitions. [2018-10-05 09:46:11,529 INFO L78 Accepts]: Start accepts. Automaton has 50938 states and 356617 transitions. Word has length 35 [2018-10-05 09:46:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:11,529 INFO L480 AbstractCegarLoop]: Abstraction has 50938 states and 356617 transitions. [2018-10-05 09:46:11,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:46:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 50938 states and 356617 transitions. [2018-10-05 09:46:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:11,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:11,536 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] [2018-10-05 09:46:11,536 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:11,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:11,537 INFO L82 PathProgramCache]: Analyzing trace with hash -650110812, now seen corresponding path program 1 times [2018-10-05 09:46:11,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:11,895 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:46:12,284 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-05 09:46:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:46:13,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:46:13,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-10-05 09:46:13,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:46:13,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:46:13,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:46:13,131 INFO L87 Difference]: Start difference. First operand 50938 states and 356617 transitions. Second operand 23 states. [2018-10-05 09:46:14,089 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-10-05 09:46:14,388 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2018-10-05 09:46:14,577 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-05 09:46:14,743 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-05 09:46:14,964 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2018-10-05 09:46:15,231 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2018-10-05 09:46:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:16,114 INFO L93 Difference]: Finished difference Result 55669 states and 388795 transitions. [2018-10-05 09:46:16,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-05 09:46:16,115 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-10-05 09:46:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:16,328 INFO L225 Difference]: With dead ends: 55669 [2018-10-05 09:46:16,328 INFO L226 Difference]: Without dead ends: 55669 [2018-10-05 09:46:16,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2018-10-05 09:46:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55669 states. [2018-10-05 09:46:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55669 to 55498. [2018-10-05 09:46:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55498 states. [2018-10-05 09:46:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55498 states to 55498 states and 388619 transitions. [2018-10-05 09:46:17,578 INFO L78 Accepts]: Start accepts. Automaton has 55498 states and 388619 transitions. Word has length 35 [2018-10-05 09:46:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:17,578 INFO L480 AbstractCegarLoop]: Abstraction has 55498 states and 388619 transitions. [2018-10-05 09:46:17,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:46:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 55498 states and 388619 transitions. [2018-10-05 09:46:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:17,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:17,586 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] [2018-10-05 09:46:17,586 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:17,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash 544004913, now seen corresponding path program 1 times [2018-10-05 09:46:17,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:46:18,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:46:18,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:46:18,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:46:18,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:46:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:46:18,261 INFO L87 Difference]: Start difference. First operand 55498 states and 388619 transitions. Second operand 23 states. [2018-10-05 09:46:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:19,544 INFO L93 Difference]: Finished difference Result 55946 states and 391229 transitions. [2018-10-05 09:46:19,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:46:19,545 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-10-05 09:46:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:19,750 INFO L225 Difference]: With dead ends: 55946 [2018-10-05 09:46:19,751 INFO L226 Difference]: Without dead ends: 55946 [2018-10-05 09:46:19,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2018-10-05 09:46:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55946 states. [2018-10-05 09:46:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55946 to 52304. [2018-10-05 09:46:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52304 states. [2018-10-05 09:46:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52304 states to 52304 states and 366225 transitions. [2018-10-05 09:46:20,782 INFO L78 Accepts]: Start accepts. Automaton has 52304 states and 366225 transitions. Word has length 35 [2018-10-05 09:46:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:20,782 INFO L480 AbstractCegarLoop]: Abstraction has 52304 states and 366225 transitions. [2018-10-05 09:46:20,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:46:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 52304 states and 366225 transitions. [2018-10-05 09:46:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:20,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:20,791 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] [2018-10-05 09:46:20,791 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:20,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 106992379, now seen corresponding path program 1 times [2018-10-05 09:46:20,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:22,775 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 49 DAG size of output: 20 [2018-10-05 09:46:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:46:22,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:46:22,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-10-05 09:46:22,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:46:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:46:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:46:22,924 INFO L87 Difference]: Start difference. First operand 52304 states and 366225 transitions. Second operand 23 states. [2018-10-05 09:46:23,856 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-05 09:46:24,025 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-10-05 09:46:24,184 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2018-10-05 09:46:24,614 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2018-10-05 09:46:24,810 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2018-10-05 09:46:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:25,313 INFO L93 Difference]: Finished difference Result 52770 states and 369008 transitions. [2018-10-05 09:46:25,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:46:25,313 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-10-05 09:46:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:25,514 INFO L225 Difference]: With dead ends: 52770 [2018-10-05 09:46:25,514 INFO L226 Difference]: Without dead ends: 52770 [2018-10-05 09:46:25,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:46:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52770 states. [2018-10-05 09:46:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52770 to 52690. [2018-10-05 09:46:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52690 states. [2018-10-05 09:46:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52690 states to 52690 states and 368927 transitions. [2018-10-05 09:46:26,671 INFO L78 Accepts]: Start accepts. Automaton has 52690 states and 368927 transitions. Word has length 35 [2018-10-05 09:46:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:26,671 INFO L480 AbstractCegarLoop]: Abstraction has 52690 states and 368927 transitions. [2018-10-05 09:46:26,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:46:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 52690 states and 368927 transitions. [2018-10-05 09:46:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:26,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:26,679 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] [2018-10-05 09:46:26,679 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:26,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash 495388852, now seen corresponding path program 1 times [2018-10-05 09:46:26,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:27,007 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2018-10-05 09:46:27,225 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-05 09:46:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:46:27,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:46:27,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-10-05 09:46:27,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-05 09:46:27,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-05 09:46:27,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2018-10-05 09:46:27,768 INFO L87 Difference]: Start difference. First operand 52690 states and 368927 transitions. Second operand 21 states. [2018-10-05 09:46:29,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:29,326 INFO L93 Difference]: Finished difference Result 53786 states and 375383 transitions. [2018-10-05 09:46:29,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:46:29,327 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2018-10-05 09:46:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:29,506 INFO L225 Difference]: With dead ends: 53786 [2018-10-05 09:46:29,506 INFO L226 Difference]: Without dead ends: 53786 [2018-10-05 09:46:29,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:46:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53786 states. [2018-10-05 09:46:30,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53786 to 52706. [2018-10-05 09:46:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52706 states. [2018-10-05 09:46:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52706 states to 52706 states and 369039 transitions. [2018-10-05 09:46:30,571 INFO L78 Accepts]: Start accepts. Automaton has 52706 states and 369039 transitions. Word has length 35 [2018-10-05 09:46:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:30,572 INFO L480 AbstractCegarLoop]: Abstraction has 52706 states and 369039 transitions. [2018-10-05 09:46:30,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-05 09:46:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 52706 states and 369039 transitions. [2018-10-05 09:46:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:30,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:30,582 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] [2018-10-05 09:46:30,582 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:30,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1252492043, now seen corresponding path program 1 times [2018-10-05 09:46:30,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:46:30,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:46:30,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-05 09:46:30,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-05 09:46:30,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-05 09:46:30,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-10-05 09:46:30,843 INFO L87 Difference]: Start difference. First operand 52706 states and 369039 transitions. Second operand 16 states. [2018-10-05 09:46:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:32,371 INFO L93 Difference]: Finished difference Result 52998 states and 370289 transitions. [2018-10-05 09:46:32,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-05 09:46:32,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2018-10-05 09:46:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:32,557 INFO L225 Difference]: With dead ends: 52998 [2018-10-05 09:46:32,558 INFO L226 Difference]: Without dead ends: 52998 [2018-10-05 09:46:32,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:46:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52998 states. [2018-10-05 09:46:33,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52998 to 52708. [2018-10-05 09:46:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52708 states. [2018-10-05 09:46:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52708 states to 52708 states and 369053 transitions. [2018-10-05 09:46:33,583 INFO L78 Accepts]: Start accepts. Automaton has 52708 states and 369053 transitions. Word has length 35 [2018-10-05 09:46:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:33,583 INFO L480 AbstractCegarLoop]: Abstraction has 52708 states and 369053 transitions. [2018-10-05 09:46:33,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-05 09:46:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 52708 states and 369053 transitions. [2018-10-05 09:46:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-05 09:46:33,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:33,591 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] [2018-10-05 09:46:33,592 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:33,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1467741437, now seen corresponding path program 1 times [2018-10-05 09:46:33,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:46:34,197 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:46:34,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-05 09:46:34,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-05 09:46:34,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-05 09:46:34,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-10-05 09:46:34,198 INFO L87 Difference]: Start difference. First operand 52708 states and 369053 transitions. Second operand 20 states. [2018-10-05 09:46:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:35,704 INFO L93 Difference]: Finished difference Result 52860 states and 369887 transitions. [2018-10-05 09:46:35,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-05 09:46:35,704 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 35 [2018-10-05 09:46:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:35,898 INFO L225 Difference]: With dead ends: 52860 [2018-10-05 09:46:35,898 INFO L226 Difference]: Without dead ends: 52860 [2018-10-05 09:46:35,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:46:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52860 states. [2018-10-05 09:46:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52860 to 52815. [2018-10-05 09:46:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52815 states. [2018-10-05 09:46:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52815 states to 52815 states and 369843 transitions. [2018-10-05 09:46:37,083 INFO L78 Accepts]: Start accepts. Automaton has 52815 states and 369843 transitions. Word has length 35 [2018-10-05 09:46:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:37,083 INFO L480 AbstractCegarLoop]: Abstraction has 52815 states and 369843 transitions. [2018-10-05 09:46:37,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-05 09:46:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 52815 states and 369843 transitions. [2018-10-05 09:46:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:46:37,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:37,092 INFO L375 BasicCegarLoop]: trace histogram [5, 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] [2018-10-05 09:46:37,092 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:37,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:37,093 INFO L82 PathProgramCache]: Analyzing trace with hash -495441101, now seen corresponding path program 3 times [2018-10-05 09:46:37,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:46:38,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:46:38,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-05 09:46:38,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-05 09:46:38,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-05 09:46:38,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2018-10-05 09:46:38,251 INFO L87 Difference]: Start difference. First operand 52815 states and 369843 transitions. Second operand 28 states. [2018-10-05 09:46:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:46:42,342 INFO L93 Difference]: Finished difference Result 157812 states and 1101223 transitions. [2018-10-05 09:46:42,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-05 09:46:42,343 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 36 [2018-10-05 09:46:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:46:43,007 INFO L225 Difference]: With dead ends: 157812 [2018-10-05 09:46:43,007 INFO L226 Difference]: Without dead ends: 157812 [2018-10-05 09:46:43,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=617, Invalid=1545, Unknown=0, NotChecked=0, Total=2162 [2018-10-05 09:46:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157812 states. [2018-10-05 09:46:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157812 to 130027. [2018-10-05 09:46:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130027 states. [2018-10-05 09:46:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130027 states to 130027 states and 910327 transitions. [2018-10-05 09:46:46,029 INFO L78 Accepts]: Start accepts. Automaton has 130027 states and 910327 transitions. Word has length 36 [2018-10-05 09:46:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:46:46,029 INFO L480 AbstractCegarLoop]: Abstraction has 130027 states and 910327 transitions. [2018-10-05 09:46:46,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-05 09:46:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 130027 states and 910327 transitions. [2018-10-05 09:46:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:46:46,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:46:46,039 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:46:46,039 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:46:46,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:46:46,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1619720483, now seen corresponding path program 1 times [2018-10-05 09:46:46,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:46:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:46:46,383 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2018-10-05 09:46:46,573 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2018-10-05 09:46:46,825 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2018-10-05 09:46:47,132 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 56 [2018-10-05 09:46:47,326 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-05 09:46:47,550 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2018-10-05 09:46:47,737 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-05 09:46:48,019 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2018-10-05 09:46:48,293 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2018-10-05 09:46:48,566 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 59 [2018-10-05 09:46:48,905 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 59 [2018-10-05 09:46:49,127 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2018-10-05 09:46:49,352 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2018-10-05 09:46:49,516 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2018-10-05 09:46:49,670 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2018-10-05 09:46:49,858 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2018-10-05 09:46:50,005 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2018-10-05 09:46:50,150 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2018-10-05 09:46:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:46:56,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:46:56,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:46:56,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:46:56,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:46:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:46:56,806 INFO L87 Difference]: Start difference. First operand 130027 states and 910327 transitions. Second operand 30 states. [2018-10-05 09:46:57,604 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-05 09:46:57,816 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2018-10-05 09:46:58,073 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2018-10-05 09:46:58,454 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-05 09:46:58,739 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2018-10-05 09:46:59,033 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2018-10-05 09:46:59,333 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2018-10-05 09:46:59,619 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2018-10-05 09:46:59,925 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2018-10-05 09:47:00,386 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2018-10-05 09:47:00,671 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2018-10-05 09:47:00,973 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2018-10-05 09:47:01,290 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2018-10-05 09:47:01,576 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2018-10-05 09:47:01,865 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2018-10-05 09:47:02,147 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2018-10-05 09:47:02,438 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-05 09:47:02,732 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2018-10-05 09:47:03,084 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2018-10-05 09:47:03,487 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 82 [2018-10-05 09:47:03,980 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2018-10-05 09:47:04,498 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2018-10-05 09:47:05,803 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-05 09:47:06,129 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2018-10-05 09:47:06,392 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2018-10-05 09:47:06,699 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2018-10-05 09:47:07,012 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2018-10-05 09:47:07,581 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2018-10-05 09:47:07,860 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 79 [2018-10-05 09:47:09,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:47:09,115 INFO L93 Difference]: Finished difference Result 186346 states and 1301237 transitions. [2018-10-05 09:47:09,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-05 09:47:09,115 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2018-10-05 09:47:09,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:47:09,935 INFO L225 Difference]: With dead ends: 186346 [2018-10-05 09:47:09,935 INFO L226 Difference]: Without dead ends: 186346 [2018-10-05 09:47:09,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1287, Invalid=3003, Unknown=0, NotChecked=0, Total=4290 [2018-10-05 09:47:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186346 states. [2018-10-05 09:47:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186346 to 180149. [2018-10-05 09:47:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180149 states. [2018-10-05 09:47:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180149 states to 180149 states and 1261181 transitions. [2018-10-05 09:47:15,029 INFO L78 Accepts]: Start accepts. Automaton has 180149 states and 1261181 transitions. Word has length 36 [2018-10-05 09:47:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:47:15,030 INFO L480 AbstractCegarLoop]: Abstraction has 180149 states and 1261181 transitions. [2018-10-05 09:47:15,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:47:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 180149 states and 1261181 transitions. [2018-10-05 09:47:15,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:47:15,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:47:15,041 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] [2018-10-05 09:47:15,041 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:47:15,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:47:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2054720239, now seen corresponding path program 1 times [2018-10-05 09:47:15,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:47:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:47:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-05 09:47:15,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:47:15,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-05 09:47:15,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-05 09:47:15,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-05 09:47:15,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-10-05 09:47:15,508 INFO L87 Difference]: Start difference. First operand 180149 states and 1261181 transitions. Second operand 23 states. [2018-10-05 09:47:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:47:17,984 INFO L93 Difference]: Finished difference Result 180229 states and 1261264 transitions. [2018-10-05 09:47:17,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-05 09:47:17,984 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 36 [2018-10-05 09:47:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:47:18,683 INFO L225 Difference]: With dead ends: 180229 [2018-10-05 09:47:18,683 INFO L226 Difference]: Without dead ends: 180229 [2018-10-05 09:47:18,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2018-10-05 09:47:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180229 states. [2018-10-05 09:47:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180229 to 177155. [2018-10-05 09:47:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177155 states. [2018-10-05 09:47:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177155 states to 177155 states and 1240212 transitions. [2018-10-05 09:47:25,208 INFO L78 Accepts]: Start accepts. Automaton has 177155 states and 1240212 transitions. Word has length 36 [2018-10-05 09:47:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:47:25,208 INFO L480 AbstractCegarLoop]: Abstraction has 177155 states and 1240212 transitions. [2018-10-05 09:47:25,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-05 09:47:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 177155 states and 1240212 transitions. [2018-10-05 09:47:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:47:25,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:47:25,221 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] [2018-10-05 09:47:25,221 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:47:25,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:47:25,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1354872616, now seen corresponding path program 1 times [2018-10-05 09:47:25,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:47:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:47:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:47:25,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:47:25,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-05 09:47:25,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-05 09:47:25,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-05 09:47:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2018-10-05 09:47:25,909 INFO L87 Difference]: Start difference. First operand 177155 states and 1240212 transitions. Second operand 22 states. [2018-10-05 09:47:26,482 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-10-05 09:47:26,786 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-10-05 09:47:26,977 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-05 09:47:27,156 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2018-10-05 09:47:27,333 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-05 09:47:27,641 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-05 09:47:27,984 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-05 09:47:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:47:29,300 INFO L93 Difference]: Finished difference Result 178705 states and 1250056 transitions. [2018-10-05 09:47:29,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:47:29,301 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2018-10-05 09:47:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:47:30,004 INFO L225 Difference]: With dead ends: 178705 [2018-10-05 09:47:30,004 INFO L226 Difference]: Without dead ends: 178705 [2018-10-05 09:47:30,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2018-10-05 09:47:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178705 states. [2018-10-05 09:47:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178705 to 177535. [2018-10-05 09:47:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177535 states. [2018-10-05 09:47:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177535 states to 177535 states and 1242872 transitions. [2018-10-05 09:47:36,744 INFO L78 Accepts]: Start accepts. Automaton has 177535 states and 1242872 transitions. Word has length 36 [2018-10-05 09:47:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:47:36,744 INFO L480 AbstractCegarLoop]: Abstraction has 177535 states and 1242872 transitions. [2018-10-05 09:47:36,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-05 09:47:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 177535 states and 1242872 transitions. [2018-10-05 09:47:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:47:36,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:47:36,756 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:47:36,756 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:47:36,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:47:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash -170568929, now seen corresponding path program 1 times [2018-10-05 09:47:36,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:47:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:47:37,516 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-05 09:47:37,669 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-05 09:47:37,841 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2018-10-05 09:47:38,103 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-05 09:47:38,349 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2018-10-05 09:47:38,588 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 44 [2018-10-05 09:47:38,796 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 40 [2018-10-05 09:47:38,984 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2018-10-05 09:47:39,173 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 32 [2018-10-05 09:47:39,605 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 26 [2018-10-05 09:47:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:47:39,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:47:39,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-05 09:47:39,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-05 09:47:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-05 09:47:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:47:39,870 INFO L87 Difference]: Start difference. First operand 177535 states and 1242872 transitions. Second operand 29 states. [2018-10-05 09:47:40,568 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-05 09:47:40,798 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 63 [2018-10-05 09:47:41,100 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2018-10-05 09:47:41,397 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2018-10-05 09:47:41,691 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2018-10-05 09:47:41,990 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2018-10-05 09:47:42,277 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-05 09:47:42,495 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-10-05 09:47:42,797 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2018-10-05 09:47:44,626 WARN L178 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2018-10-05 09:47:44,889 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 64 [2018-10-05 09:47:45,187 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2018-10-05 09:47:45,509 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-05 09:47:45,796 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2018-10-05 09:47:46,071 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2018-10-05 09:47:46,360 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2018-10-05 09:47:46,634 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-05 09:47:46,809 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-05 09:47:47,040 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-05 09:47:47,420 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-05 09:47:47,803 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2018-10-05 09:47:48,091 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-10-05 09:47:48,448 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2018-10-05 09:47:48,880 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-05 09:47:50,664 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-05 09:47:50,971 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2018-10-05 09:47:51,197 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 59 [2018-10-05 09:47:51,506 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2018-10-05 09:47:51,804 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 68 [2018-10-05 09:47:52,024 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-10-05 09:47:52,314 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2018-10-05 09:47:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:47:54,120 INFO L93 Difference]: Finished difference Result 250878 states and 1753248 transitions. [2018-10-05 09:47:54,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-05 09:47:54,120 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2018-10-05 09:47:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:47:55,268 INFO L225 Difference]: With dead ends: 250878 [2018-10-05 09:47:55,268 INFO L226 Difference]: Without dead ends: 250878 [2018-10-05 09:47:55,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=1348, Invalid=3208, Unknown=0, NotChecked=0, Total=4556 [2018-10-05 09:47:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250878 states. [2018-10-05 09:48:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250878 to 224671. [2018-10-05 09:48:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224671 states. [2018-10-05 09:48:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224671 states to 224671 states and 1572824 transitions. [2018-10-05 09:48:10,837 INFO L78 Accepts]: Start accepts. Automaton has 224671 states and 1572824 transitions. Word has length 36 [2018-10-05 09:48:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:48:10,837 INFO L480 AbstractCegarLoop]: Abstraction has 224671 states and 1572824 transitions. [2018-10-05 09:48:10,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-05 09:48:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 224671 states and 1572824 transitions. [2018-10-05 09:48:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:48:10,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:48:10,851 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:48:10,851 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:48:10,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:48:10,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1027231, now seen corresponding path program 2 times [2018-10-05 09:48:10,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:48:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:48:11,406 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2018-10-05 09:48:11,626 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2018-10-05 09:48:11,852 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2018-10-05 09:48:12,158 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-05 09:48:12,367 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2018-10-05 09:48:12,629 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-05 09:48:12,878 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2018-10-05 09:48:13,126 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-05 09:48:13,454 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2018-10-05 09:48:13,747 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-05 09:48:14,141 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 56 [2018-10-05 09:48:14,519 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2018-10-05 09:48:14,848 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 43 [2018-10-05 09:48:15,119 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2018-10-05 09:48:15,325 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2018-10-05 09:48:15,504 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-10-05 09:48:15,668 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2018-10-05 09:48:15,915 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2018-10-05 09:48:18,083 WARN L178 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2018-10-05 09:48:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:48:18,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:48:18,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-05 09:48:18,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-05 09:48:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-05 09:48:18,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:48:18,358 INFO L87 Difference]: Start difference. First operand 224671 states and 1572824 transitions. Second operand 31 states. [2018-10-05 09:48:19,078 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2018-10-05 09:48:19,291 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2018-10-05 09:48:19,614 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2018-10-05 09:48:20,041 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 76 [2018-10-05 09:48:20,653 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 79 [2018-10-05 09:48:21,108 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 78 [2018-10-05 09:48:21,506 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 76 [2018-10-05 09:48:21,902 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2018-10-05 09:48:22,374 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-05 09:48:22,812 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 77 [2018-10-05 09:48:23,260 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2018-10-05 09:48:23,661 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 74 [2018-10-05 09:48:24,136 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2018-10-05 09:48:24,583 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 76 [2018-10-05 09:48:25,019 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 81 [2018-10-05 09:48:25,435 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2018-10-05 09:48:25,913 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2018-10-05 09:48:26,371 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2018-10-05 09:48:26,807 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 78 [2018-10-05 09:48:27,223 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2018-10-05 09:48:27,585 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-05 09:48:28,070 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2018-10-05 09:48:28,541 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2018-10-05 09:48:29,062 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-05 09:48:29,585 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 75 [2018-10-05 09:48:30,242 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2018-10-05 09:48:30,704 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 77 [2018-10-05 09:48:32,364 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 81 [2018-10-05 09:48:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:48:34,309 INFO L93 Difference]: Finished difference Result 233688 states and 1633168 transitions. [2018-10-05 09:48:34,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-05 09:48:34,309 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 36 [2018-10-05 09:48:34,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:48:45,670 INFO L225 Difference]: With dead ends: 233688 [2018-10-05 09:48:45,670 INFO L226 Difference]: Without dead ends: 233688 [2018-10-05 09:48:45,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=1172, Invalid=3118, Unknown=0, NotChecked=0, Total=4290 [2018-10-05 09:48:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233688 states. [2018-10-05 09:48:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233688 to 224737. [2018-10-05 09:48:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224737 states. [2018-10-05 09:48:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224737 states to 224737 states and 1573286 transitions. [2018-10-05 09:48:52,474 INFO L78 Accepts]: Start accepts. Automaton has 224737 states and 1573286 transitions. Word has length 36 [2018-10-05 09:48:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:48:52,474 INFO L480 AbstractCegarLoop]: Abstraction has 224737 states and 1573286 transitions. [2018-10-05 09:48:52,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-05 09:48:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 224737 states and 1573286 transitions. [2018-10-05 09:48:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:48:52,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:48:52,487 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:48:52,487 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:48:52,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:48:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash 312991, now seen corresponding path program 3 times [2018-10-05 09:48:52,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:48:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:48:52,837 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2018-10-05 09:48:52,998 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2018-10-05 09:48:53,211 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 47 [2018-10-05 09:48:53,494 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 57 [2018-10-05 09:48:53,929 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2018-10-05 09:48:54,328 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 80 [2018-10-05 09:48:54,723 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2018-10-05 09:48:55,171 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 79 [2018-10-05 09:48:55,605 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 76 [2018-10-05 09:48:56,067 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 73 [2018-10-05 09:48:56,533 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 69 [2018-10-05 09:48:56,962 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 63 [2018-10-05 09:48:57,421 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 56 [2018-10-05 09:48:57,785 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 46 [2018-10-05 09:48:58,080 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2018-10-05 09:48:58,348 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 38 [2018-10-05 09:48:58,579 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2018-10-05 09:48:58,795 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2018-10-05 09:48:59,057 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 33 [2018-10-05 09:48:59,245 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2018-10-05 09:48:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:48:59,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:48:59,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:48:59,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:48:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:48:59,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:48:59,478 INFO L87 Difference]: Start difference. First operand 224737 states and 1573286 transitions. Second operand 30 states. [2018-10-05 09:48:59,990 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-05 09:49:00,195 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-05 09:49:00,461 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2018-10-05 09:49:00,759 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2018-10-05 09:49:01,089 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 70 [2018-10-05 09:49:01,615 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2018-10-05 09:49:02,019 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2018-10-05 09:49:02,426 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 74 [2018-10-05 09:49:02,837 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2018-10-05 09:49:03,212 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 74 [2018-10-05 09:49:03,566 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 71 [2018-10-05 09:49:03,961 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 77 [2018-10-05 09:49:04,355 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 75 [2018-10-05 09:49:04,719 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2018-10-05 09:49:05,099 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 78 [2018-10-05 09:49:05,527 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2018-10-05 09:49:05,933 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2018-10-05 09:49:06,441 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 75 [2018-10-05 09:49:07,023 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2018-10-05 09:49:07,624 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 73 [2018-10-05 09:49:08,894 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 67 [2018-10-05 09:49:09,327 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 80 [2018-10-05 09:49:09,760 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 79 [2018-10-05 09:49:11,898 WARN L178 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2018-10-05 09:49:12,476 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2018-10-05 09:49:12,856 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 71 [2018-10-05 09:49:13,341 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2018-10-05 09:49:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:49:15,063 INFO L93 Difference]: Finished difference Result 267558 states and 1869707 transitions. [2018-10-05 09:49:15,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-05 09:49:15,063 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2018-10-05 09:49:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:49:16,121 INFO L225 Difference]: With dead ends: 267558 [2018-10-05 09:49:16,122 INFO L226 Difference]: Without dead ends: 267558 [2018-10-05 09:49:16,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=1010, Invalid=2530, Unknown=0, NotChecked=0, Total=3540 [2018-10-05 09:49:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267558 states. [2018-10-05 09:49:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267558 to 182311. [2018-10-05 09:49:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182311 states. [2018-10-05 09:49:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182311 states to 182311 states and 1276304 transitions. [2018-10-05 09:49:22,897 INFO L78 Accepts]: Start accepts. Automaton has 182311 states and 1276304 transitions. Word has length 36 [2018-10-05 09:49:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:49:22,897 INFO L480 AbstractCegarLoop]: Abstraction has 182311 states and 1276304 transitions. [2018-10-05 09:49:22,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:49:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 182311 states and 1276304 transitions. [2018-10-05 09:49:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:49:22,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:49:22,909 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] [2018-10-05 09:49:22,909 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:49:22,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:49:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash 760288968, now seen corresponding path program 1 times [2018-10-05 09:49:22,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:49:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:49:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:49:23,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:49:23,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-10-05 09:49:23,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-05 09:49:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-05 09:49:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-10-05 09:49:23,290 INFO L87 Difference]: Start difference. First operand 182311 states and 1276304 transitions. Second operand 17 states. [2018-10-05 09:49:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:49:25,428 INFO L93 Difference]: Finished difference Result 183371 states and 1282982 transitions. [2018-10-05 09:49:25,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-05 09:49:25,429 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2018-10-05 09:49:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:49:26,234 INFO L225 Difference]: With dead ends: 183371 [2018-10-05 09:49:26,234 INFO L226 Difference]: Without dead ends: 183371 [2018-10-05 09:49:26,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:49:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183371 states. [2018-10-05 09:49:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183371 to 182595. [2018-10-05 09:49:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182595 states. [2018-10-05 09:49:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182595 states to 182595 states and 1278292 transitions. [2018-10-05 09:49:41,119 INFO L78 Accepts]: Start accepts. Automaton has 182595 states and 1278292 transitions. Word has length 36 [2018-10-05 09:49:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:49:41,120 INFO L480 AbstractCegarLoop]: Abstraction has 182595 states and 1278292 transitions. [2018-10-05 09:49:41,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-05 09:49:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 182595 states and 1278292 transitions. [2018-10-05 09:49:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:49:41,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:49:41,134 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:49:41,134 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:49:41,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:49:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1486526239, now seen corresponding path program 4 times [2018-10-05 09:49:41,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:49:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:49:41,487 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:49:41,769 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-10-05 09:49:41,932 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2018-10-05 09:49:42,128 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2018-10-05 09:49:42,414 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-05 09:49:42,723 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 63 [2018-10-05 09:49:43,061 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 57 [2018-10-05 09:49:43,440 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 66 [2018-10-05 09:49:43,822 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2018-10-05 09:49:44,220 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 59 [2018-10-05 09:49:44,651 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 53 [2018-10-05 09:49:45,046 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 52 [2018-10-05 09:49:45,379 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 46 [2018-10-05 09:49:45,682 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 39 [2018-10-05 09:49:45,911 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2018-10-05 09:49:46,148 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2018-10-05 09:49:46,378 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 31 [2018-10-05 09:49:46,577 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2018-10-05 09:49:46,793 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 30 [2018-10-05 09:49:46,969 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2018-10-05 09:49:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:49:47,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:49:47,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:49:47,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:49:47,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:49:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:49:47,202 INFO L87 Difference]: Start difference. First operand 182595 states and 1278292 transitions. Second operand 30 states. [2018-10-05 09:49:49,568 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2018-10-05 09:49:49,767 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2018-10-05 09:49:50,007 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 60 [2018-10-05 09:49:50,243 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 62 [2018-10-05 09:49:50,679 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 67 [2018-10-05 09:49:50,984 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2018-10-05 09:49:51,256 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 66 [2018-10-05 09:49:51,635 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2018-10-05 09:49:51,899 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 64 [2018-10-05 09:49:52,214 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2018-10-05 09:49:52,488 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 65 [2018-10-05 09:49:52,755 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 63 [2018-10-05 09:49:53,057 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2018-10-05 09:49:53,450 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2018-10-05 09:49:53,714 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 65 [2018-10-05 09:49:53,986 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 64 [2018-10-05 09:49:54,260 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2018-10-05 09:49:54,602 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2018-10-05 09:49:54,878 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2018-10-05 09:49:55,184 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 63 [2018-10-05 09:49:55,572 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2018-10-05 09:49:55,947 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 65 [2018-10-05 09:49:56,465 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2018-10-05 09:49:56,792 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 64 [2018-10-05 09:49:58,561 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 76 [2018-10-05 09:49:58,854 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 69 [2018-10-05 09:49:59,110 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 58 [2018-10-05 09:49:59,408 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 71 [2018-10-05 09:49:59,685 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2018-10-05 09:49:59,978 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 65 [2018-10-05 09:50:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:50:02,054 INFO L93 Difference]: Finished difference Result 291247 states and 2034967 transitions. [2018-10-05 09:50:02,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-05 09:50:02,054 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2018-10-05 09:50:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:50:05,529 INFO L225 Difference]: With dead ends: 291247 [2018-10-05 09:50:05,529 INFO L226 Difference]: Without dead ends: 291247 [2018-10-05 09:50:05,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=1252, Invalid=3038, Unknown=0, NotChecked=0, Total=4290 [2018-10-05 09:50:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291247 states. [2018-10-05 09:50:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291247 to 285431. [2018-10-05 09:50:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285431 states. [2018-10-05 09:50:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285431 states to 285431 states and 1998144 transitions. [2018-10-05 09:50:23,001 INFO L78 Accepts]: Start accepts. Automaton has 285431 states and 1998144 transitions. Word has length 36 [2018-10-05 09:50:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:50:23,001 INFO L480 AbstractCegarLoop]: Abstraction has 285431 states and 1998144 transitions. [2018-10-05 09:50:23,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:50:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 285431 states and 1998144 transitions. [2018-10-05 09:50:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:50:23,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:50:23,014 INFO L375 BasicCegarLoop]: trace histogram [5, 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] [2018-10-05 09:50:23,014 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:50:23,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:50:23,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1944592655, now seen corresponding path program 4 times [2018-10-05 09:50:23,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:50:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:50:23,483 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2018-10-05 09:50:23,670 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2018-10-05 09:50:23,947 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2018-10-05 09:50:24,100 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2018-10-05 09:50:24,249 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2018-10-05 09:50:24,525 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 27 [2018-10-05 09:50:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:50:25,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:50:25,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-05 09:50:25,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-05 09:50:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-05 09:50:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2018-10-05 09:50:25,123 INFO L87 Difference]: Start difference. First operand 285431 states and 1998144 transitions. Second operand 26 states. [2018-10-05 09:50:26,112 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-10-05 09:50:28,518 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-05 09:50:28,654 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-10-05 09:50:28,866 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-05 09:50:28,998 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-05 09:50:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:50:33,744 INFO L93 Difference]: Finished difference Result 342394 states and 2393921 transitions. [2018-10-05 09:50:33,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-05 09:50:33,744 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 36 [2018-10-05 09:50:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:50:35,339 INFO L225 Difference]: With dead ends: 342394 [2018-10-05 09:50:35,339 INFO L226 Difference]: Without dead ends: 342394 [2018-10-05 09:50:35,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=849, Invalid=1803, Unknown=0, NotChecked=0, Total=2652 [2018-10-05 09:50:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342394 states. [2018-10-05 09:50:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342394 to 334845. [2018-10-05 09:50:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334845 states. [2018-10-05 09:51:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334845 states to 334845 states and 2344042 transitions. [2018-10-05 09:51:06,791 INFO L78 Accepts]: Start accepts. Automaton has 334845 states and 2344042 transitions. Word has length 36 [2018-10-05 09:51:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:51:06,792 INFO L480 AbstractCegarLoop]: Abstraction has 334845 states and 2344042 transitions. [2018-10-05 09:51:06,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-05 09:51:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 334845 states and 2344042 transitions. [2018-10-05 09:51:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:51:06,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:51:06,806 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] [2018-10-05 09:51:06,806 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:51:06,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:51:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1143024636, now seen corresponding path program 1 times [2018-10-05 09:51:06,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:51:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:51:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:51:07,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:51:07,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:51:07,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:51:07,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:51:07,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:51:07,779 INFO L87 Difference]: Start difference. First operand 334845 states and 2344042 transitions. Second operand 25 states. [2018-10-05 09:51:12,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:51:12,395 INFO L93 Difference]: Finished difference Result 396946 states and 2777599 transitions. [2018-10-05 09:51:12,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:51:12,396 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 36 [2018-10-05 09:51:12,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:51:17,089 INFO L225 Difference]: With dead ends: 396946 [2018-10-05 09:51:17,089 INFO L226 Difference]: Without dead ends: 396946 [2018-10-05 09:51:17,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:51:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396946 states. [2018-10-05 09:51:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396946 to 368943. [2018-10-05 09:51:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368943 states. [2018-10-05 09:51:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368943 states to 368943 states and 2582760 transitions. [2018-10-05 09:51:31,138 INFO L78 Accepts]: Start accepts. Automaton has 368943 states and 2582760 transitions. Word has length 36 [2018-10-05 09:51:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:51:31,138 INFO L480 AbstractCegarLoop]: Abstraction has 368943 states and 2582760 transitions. [2018-10-05 09:51:31,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:51:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 368943 states and 2582760 transitions. [2018-10-05 09:51:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:51:31,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:51:31,152 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:51:31,153 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:51:31,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:51:31,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2115712159, now seen corresponding path program 5 times [2018-10-05 09:51:31,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:51:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:51:31,662 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-05 09:51:31,817 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-05 09:51:31,975 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2018-10-05 09:51:32,151 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2018-10-05 09:51:32,419 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2018-10-05 09:51:32,563 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2018-10-05 09:51:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:51:33,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:51:33,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-05 09:51:33,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-05 09:51:33,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-05 09:51:33,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2018-10-05 09:51:33,084 INFO L87 Difference]: Start difference. First operand 368943 states and 2582760 transitions. Second operand 25 states. [2018-10-05 09:51:36,806 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-05 09:51:37,277 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-10-05 09:51:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:51:55,377 INFO L93 Difference]: Finished difference Result 415726 states and 2906782 transitions. [2018-10-05 09:51:55,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-05 09:51:55,377 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 36 [2018-10-05 09:51:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:51:57,155 INFO L225 Difference]: With dead ends: 415726 [2018-10-05 09:51:57,155 INFO L226 Difference]: Without dead ends: 415726 [2018-10-05 09:51:57,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=837, Invalid=1919, Unknown=0, NotChecked=0, Total=2756 [2018-10-05 09:51:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415726 states. [2018-10-05 09:52:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415726 to 212947. [2018-10-05 09:52:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212947 states. [2018-10-05 09:52:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212947 states to 212947 states and 1490788 transitions. [2018-10-05 09:52:07,294 INFO L78 Accepts]: Start accepts. Automaton has 212947 states and 1490788 transitions. Word has length 36 [2018-10-05 09:52:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:52:07,295 INFO L480 AbstractCegarLoop]: Abstraction has 212947 states and 1490788 transitions. [2018-10-05 09:52:07,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-05 09:52:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 212947 states and 1490788 transitions. [2018-10-05 09:52:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:52:07,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:52:07,308 INFO L375 BasicCegarLoop]: trace histogram [5, 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] [2018-10-05 09:52:07,308 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:52:07,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:52:07,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2116367561, now seen corresponding path program 5 times [2018-10-05 09:52:07,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:52:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:52:07,670 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2018-10-05 09:52:07,797 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-10-05 09:52:08,003 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-10-05 09:52:08,281 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2018-10-05 09:52:08,550 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-05 09:52:08,875 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2018-10-05 09:52:09,067 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 43 [2018-10-05 09:52:09,260 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 40 [2018-10-05 09:52:09,451 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 27 [2018-10-05 09:52:09,639 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 32 [2018-10-05 09:52:09,780 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 22 [2018-10-05 09:52:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-05 09:52:10,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:52:10,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:52:10,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:52:10,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:52:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:52:10,413 INFO L87 Difference]: Start difference. First operand 212947 states and 1490788 transitions. Second operand 27 states. [2018-10-05 09:52:11,477 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-10-05 09:52:11,637 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-05 09:52:11,803 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2018-10-05 09:52:11,970 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-05 09:52:12,147 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2018-10-05 09:52:12,303 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-10-05 09:52:12,460 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-10-05 09:52:12,938 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-05 09:52:13,151 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-10-05 09:52:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:52:16,198 INFO L93 Difference]: Finished difference Result 295429 states and 2065628 transitions. [2018-10-05 09:52:16,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-05 09:52:16,199 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 36 [2018-10-05 09:52:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:52:20,194 INFO L225 Difference]: With dead ends: 295429 [2018-10-05 09:52:20,195 INFO L226 Difference]: Without dead ends: 295429 [2018-10-05 09:52:20,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=527, Invalid=1365, Unknown=0, NotChecked=0, Total=1892 [2018-10-05 09:52:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295429 states. [2018-10-05 09:52:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295429 to 181415. [2018-10-05 09:52:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181415 states. [2018-10-05 09:52:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181415 states to 181415 states and 1270064 transitions. [2018-10-05 09:52:26,955 INFO L78 Accepts]: Start accepts. Automaton has 181415 states and 1270064 transitions. Word has length 36 [2018-10-05 09:52:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:52:26,956 INFO L480 AbstractCegarLoop]: Abstraction has 181415 states and 1270064 transitions. [2018-10-05 09:52:26,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:52:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 181415 states and 1270064 transitions. [2018-10-05 09:52:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:52:26,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:52:26,969 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:52:26,969 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:52:26,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:52:26,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2115474327, now seen corresponding path program 1 times [2018-10-05 09:52:26,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:52:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:52:27,519 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2018-10-05 09:52:27,762 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-05 09:52:27,897 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-10-05 09:52:28,062 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-05 09:52:28,230 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-10-05 09:52:28,463 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-05 09:52:28,724 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-05 09:52:28,963 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-05 09:52:29,200 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-05 09:52:29,421 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2018-10-05 09:52:29,599 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-10-05 09:52:29,824 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2018-10-05 09:52:30,048 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2018-10-05 09:52:30,229 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2018-10-05 09:52:30,409 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2018-10-05 09:52:30,570 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2018-10-05 09:52:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:52:30,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:52:30,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-05 09:52:30,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-05 09:52:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-05 09:52:30,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:52:30,939 INFO L87 Difference]: Start difference. First operand 181415 states and 1270064 transitions. Second operand 31 states. [2018-10-05 09:52:31,844 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-10-05 09:52:32,059 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-05 09:52:32,350 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2018-10-05 09:52:32,722 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 85 [2018-10-05 09:52:33,073 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 82 [2018-10-05 09:52:33,506 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2018-10-05 09:52:33,798 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2018-10-05 09:52:34,096 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2018-10-05 09:52:34,390 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 79 [2018-10-05 09:52:34,771 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 75 [2018-10-05 09:52:35,053 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 71 [2018-10-05 09:52:35,329 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2018-10-05 09:52:35,697 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2018-10-05 09:52:35,971 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2018-10-05 09:52:36,384 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2018-10-05 09:52:36,642 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2018-10-05 09:52:37,045 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2018-10-05 09:52:37,390 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 82 [2018-10-05 09:52:37,708 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 76 [2018-10-05 09:52:37,975 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2018-10-05 09:52:38,295 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2018-10-05 09:52:44,547 WARN L178 SmtUtils]: Spent 5.96 s on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2018-10-05 09:52:45,290 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2018-10-05 09:52:45,608 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 77 [2018-10-05 09:52:47,188 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2018-10-05 09:52:47,529 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2018-10-05 09:52:47,824 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 78 [2018-10-05 09:52:48,116 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 81 [2018-10-05 09:52:48,496 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 77 [2018-10-05 09:52:48,931 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2018-10-05 09:52:49,524 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2018-10-05 09:52:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:52:50,903 INFO L93 Difference]: Finished difference Result 193093 states and 1349085 transitions. [2018-10-05 09:52:50,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-05 09:52:50,904 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 36 [2018-10-05 09:52:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:52:51,746 INFO L225 Difference]: With dead ends: 193093 [2018-10-05 09:52:51,746 INFO L226 Difference]: Without dead ends: 193093 [2018-10-05 09:52:51,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=1330, Invalid=3362, Unknown=0, NotChecked=0, Total=4692 [2018-10-05 09:52:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193093 states. [2018-10-05 09:52:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193093 to 181675. [2018-10-05 09:52:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181675 states. [2018-10-05 09:52:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181675 states to 181675 states and 1271884 transitions. [2018-10-05 09:52:57,151 INFO L78 Accepts]: Start accepts. Automaton has 181675 states and 1271884 transitions. Word has length 36 [2018-10-05 09:52:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:52:57,152 INFO L480 AbstractCegarLoop]: Abstraction has 181675 states and 1271884 transitions. [2018-10-05 09:52:57,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-05 09:52:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 181675 states and 1271884 transitions. [2018-10-05 09:52:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:52:57,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:52:57,166 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:52:57,166 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:52:57,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:52:57,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2115950487, now seen corresponding path program 2 times [2018-10-05 09:52:57,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:52:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:52:57,844 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2018-10-05 09:52:58,272 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-10-05 09:52:58,424 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2018-10-05 09:52:58,574 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-05 09:52:58,719 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-05 09:52:58,929 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2018-10-05 09:52:59,261 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2018-10-05 09:52:59,428 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2018-10-05 09:52:59,643 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2018-10-05 09:52:59,791 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2018-10-05 09:52:59,963 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2018-10-05 09:53:00,107 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 23 [2018-10-05 09:53:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:53:00,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:53:00,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:53:00,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:53:00,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:53:00,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:53:00,365 INFO L87 Difference]: Start difference. First operand 181675 states and 1271884 transitions. Second operand 30 states. [2018-10-05 09:53:01,248 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-10-05 09:53:01,506 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2018-10-05 09:53:01,840 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-05 09:53:02,099 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2018-10-05 09:53:02,412 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2018-10-05 09:53:02,708 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-05 09:53:03,001 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2018-10-05 09:53:03,337 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2018-10-05 09:53:03,655 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2018-10-05 09:53:03,940 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2018-10-05 09:53:04,265 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2018-10-05 09:53:04,533 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2018-10-05 09:53:04,832 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2018-10-05 09:53:07,329 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2018-10-05 09:53:07,633 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2018-10-05 09:53:07,965 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2018-10-05 09:53:08,165 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2018-10-05 09:53:08,489 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-05 09:53:08,817 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-10-05 09:53:09,234 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2018-10-05 09:53:09,737 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2018-10-05 09:53:10,105 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-05 09:53:11,355 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2018-10-05 09:53:11,614 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 58 [2018-10-05 09:53:11,870 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2018-10-05 09:53:12,149 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2018-10-05 09:53:12,700 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 65 [2018-10-05 09:53:13,014 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2018-10-05 09:53:13,312 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 63 [2018-10-05 09:53:13,605 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2018-10-05 09:53:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:53:15,870 INFO L93 Difference]: Finished difference Result 306504 states and 2141746 transitions. [2018-10-05 09:53:15,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-05 09:53:15,871 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2018-10-05 09:53:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:53:17,165 INFO L225 Difference]: With dead ends: 306504 [2018-10-05 09:53:17,165 INFO L226 Difference]: Without dead ends: 306504 [2018-10-05 09:53:17,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1366, Invalid=3190, Unknown=0, NotChecked=0, Total=4556 [2018-10-05 09:53:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306504 states. [2018-10-05 09:53:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306504 to 299757. [2018-10-05 09:53:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299757 states. [2018-10-05 09:53:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299757 states to 299757 states and 2098458 transitions. [2018-10-05 09:53:28,773 INFO L78 Accepts]: Start accepts. Automaton has 299757 states and 2098458 transitions. Word has length 36 [2018-10-05 09:53:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:53:28,773 INFO L480 AbstractCegarLoop]: Abstraction has 299757 states and 2098458 transitions. [2018-10-05 09:53:28,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:53:28,773 INFO L276 IsEmpty]: Start isEmpty. Operand 299757 states and 2098458 transitions. [2018-10-05 09:53:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:53:28,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:53:28,789 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:53:28,789 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:53:28,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:53:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1257076887, now seen corresponding path program 3 times [2018-10-05 09:53:28,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:53:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:53:30,502 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2018-10-05 09:53:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:53:30,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:53:30,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-05 09:53:30,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-05 09:53:30,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-05 09:53:30,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2018-10-05 09:53:30,826 INFO L87 Difference]: Start difference. First operand 299757 states and 2098458 transitions. Second operand 30 states. [2018-10-05 09:53:31,686 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-05 09:53:31,834 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-05 09:53:32,449 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-10-05 09:53:34,752 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2018-10-05 09:53:34,901 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-05 09:53:35,041 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2018-10-05 09:53:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:53:51,107 INFO L93 Difference]: Finished difference Result 379008 states and 2650490 transitions. [2018-10-05 09:53:51,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-05 09:53:51,107 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2018-10-05 09:53:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:53:52,684 INFO L225 Difference]: With dead ends: 379008 [2018-10-05 09:53:52,685 INFO L226 Difference]: Without dead ends: 379008 [2018-10-05 09:53:52,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=707, Invalid=1843, Unknown=0, NotChecked=0, Total=2550 [2018-10-05 09:53:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379008 states. [2018-10-05 09:53:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379008 to 260185. [2018-10-05 09:53:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260185 states. [2018-10-05 09:54:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260185 states to 260185 states and 1821454 transitions. [2018-10-05 09:54:00,355 INFO L78 Accepts]: Start accepts. Automaton has 260185 states and 1821454 transitions. Word has length 36 [2018-10-05 09:54:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:54:00,355 INFO L480 AbstractCegarLoop]: Abstraction has 260185 states and 1821454 transitions. [2018-10-05 09:54:00,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-05 09:54:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 260185 states and 1821454 transitions. [2018-10-05 09:54:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:54:00,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:54:00,369 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] [2018-10-05 09:54:00,369 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:54:00,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:54:00,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1302976487, now seen corresponding path program 1 times [2018-10-05 09:54:00,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:54:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:54:00,754 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-10-05 09:54:00,923 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2018-10-05 09:54:01,142 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2018-10-05 09:54:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-05 09:54:02,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:54:02,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:54:02,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:54:02,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:54:02,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:54:02,024 INFO L87 Difference]: Start difference. First operand 260185 states and 1821454 transitions. Second operand 24 states. [2018-10-05 09:54:02,778 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2018-10-05 09:54:02,936 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2018-10-05 09:54:03,098 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2018-10-05 09:54:03,354 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2018-10-05 09:54:03,597 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2018-10-05 09:54:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:54:09,556 INFO L93 Difference]: Finished difference Result 261085 states and 1827232 transitions. [2018-10-05 09:54:09,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-05 09:54:09,557 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2018-10-05 09:54:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:54:10,716 INFO L225 Difference]: With dead ends: 261085 [2018-10-05 09:54:10,716 INFO L226 Difference]: Without dead ends: 261085 [2018-10-05 09:54:10,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2018-10-05 09:54:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261085 states. [2018-10-05 09:54:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261085 to 260997. [2018-10-05 09:54:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260997 states. [2018-10-05 09:54:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260997 states to 260997 states and 1827142 transitions. [2018-10-05 09:54:18,815 INFO L78 Accepts]: Start accepts. Automaton has 260997 states and 1827142 transitions. Word has length 36 [2018-10-05 09:54:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:54:18,815 INFO L480 AbstractCegarLoop]: Abstraction has 260997 states and 1827142 transitions. [2018-10-05 09:54:18,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:54:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 260997 states and 1827142 transitions. [2018-10-05 09:54:18,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:54:18,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:54:18,830 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] [2018-10-05 09:54:18,830 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:54:18,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:54:18,831 INFO L82 PathProgramCache]: Analyzing trace with hash 562366646, now seen corresponding path program 1 times [2018-10-05 09:54:18,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:54:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:54:19,198 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2018-10-05 09:54:19,384 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-05 09:54:19,633 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2018-10-05 09:54:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:54:20,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:54:20,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-05 09:54:20,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-05 09:54:20,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-05 09:54:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2018-10-05 09:54:20,533 INFO L87 Difference]: Start difference. First operand 260997 states and 1827142 transitions. Second operand 24 states. [2018-10-05 09:54:20,799 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2018-10-05 09:54:21,016 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2018-10-05 09:54:21,153 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2018-10-05 09:54:21,404 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-10-05 09:54:21,552 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2018-10-05 09:54:21,682 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2018-10-05 09:54:21,822 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-05 09:54:24,938 WARN L178 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-10-05 09:54:25,443 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2018-10-05 09:54:25,629 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2018-10-05 09:54:25,759 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2018-10-05 09:54:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:54:28,479 INFO L93 Difference]: Finished difference Result 296725 states and 2075233 transitions. [2018-10-05 09:54:28,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-05 09:54:28,479 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2018-10-05 09:54:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:54:29,830 INFO L225 Difference]: With dead ends: 296725 [2018-10-05 09:54:29,830 INFO L226 Difference]: Without dead ends: 296725 [2018-10-05 09:54:29,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=366, Invalid=966, Unknown=0, NotChecked=0, Total=1332 [2018-10-05 09:54:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296725 states. [2018-10-05 09:54:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296725 to 274875. [2018-10-05 09:54:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274875 states. [2018-10-05 09:54:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274875 states to 274875 states and 1924288 transitions. [2018-10-05 09:54:50,523 INFO L78 Accepts]: Start accepts. Automaton has 274875 states and 1924288 transitions. Word has length 36 [2018-10-05 09:54:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:54:50,523 INFO L480 AbstractCegarLoop]: Abstraction has 274875 states and 1924288 transitions. [2018-10-05 09:54:50,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-05 09:54:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 274875 states and 1924288 transitions. [2018-10-05 09:54:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:54:50,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:54:50,538 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] [2018-10-05 09:54:50,538 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:54:50,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:54:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash 607801893, now seen corresponding path program 1 times [2018-10-05 09:54:50,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:54:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:54:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-05 09:54:51,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:54:51,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-05 09:54:51,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-05 09:54:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-05 09:54:51,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2018-10-05 09:54:51,339 INFO L87 Difference]: Start difference. First operand 274875 states and 1924288 transitions. Second operand 21 states. [2018-10-05 09:54:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:54:57,426 INFO L93 Difference]: Finished difference Result 284830 states and 1993480 transitions. [2018-10-05 09:54:57,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-05 09:54:57,426 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2018-10-05 09:54:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:54:58,593 INFO L225 Difference]: With dead ends: 284830 [2018-10-05 09:54:58,593 INFO L226 Difference]: Without dead ends: 284830 [2018-10-05 09:54:58,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2018-10-05 09:54:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284830 states. [2018-10-05 09:55:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284830 to 284749. [2018-10-05 09:55:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284749 states. [2018-10-05 09:55:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284749 states to 284749 states and 1993395 transitions. [2018-10-05 09:55:06,833 INFO L78 Accepts]: Start accepts. Automaton has 284749 states and 1993395 transitions. Word has length 36 [2018-10-05 09:55:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:55:06,833 INFO L480 AbstractCegarLoop]: Abstraction has 284749 states and 1993395 transitions. [2018-10-05 09:55:06,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-05 09:55:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 284749 states and 1993395 transitions. [2018-10-05 09:55:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:55:06,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:55:06,849 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:55:06,849 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:55:06,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:55:06,850 INFO L82 PathProgramCache]: Analyzing trace with hash -484340457, now seen corresponding path program 4 times [2018-10-05 09:55:06,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:55:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:55:07,306 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 37 [2018-10-05 09:55:07,551 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2018-10-05 09:55:07,707 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2018-10-05 09:55:07,865 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 46 [2018-10-05 09:55:08,075 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2018-10-05 09:55:08,241 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2018-10-05 09:55:11,224 WARN L178 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2018-10-05 09:55:11,430 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 38 [2018-10-05 09:55:11,591 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2018-10-05 09:55:11,760 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2018-10-05 09:55:11,901 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 28 [2018-10-05 09:55:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:55:12,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:55:12,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:55:12,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:55:12,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:55:12,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:55:12,424 INFO L87 Difference]: Start difference. First operand 284749 states and 1993395 transitions. Second operand 27 states. [2018-10-05 09:55:12,905 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-10-05 09:55:13,192 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-05 09:55:13,431 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-10-05 09:55:13,584 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-10-05 09:55:13,780 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-05 09:55:14,193 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-05 09:55:14,342 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2018-10-05 09:55:14,565 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2018-10-05 09:55:14,860 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-05 09:55:14,995 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-10-05 09:55:16,181 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-05 09:55:17,100 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-05 09:55:17,410 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-05 09:55:17,558 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2018-10-05 09:55:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:55:34,507 INFO L93 Difference]: Finished difference Result 368086 states and 2573716 transitions. [2018-10-05 09:55:34,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-05 09:55:34,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 36 [2018-10-05 09:55:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:55:36,037 INFO L225 Difference]: With dead ends: 368086 [2018-10-05 09:55:36,037 INFO L226 Difference]: Without dead ends: 368086 [2018-10-05 09:55:36,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=963, Invalid=2459, Unknown=0, NotChecked=0, Total=3422 [2018-10-05 09:55:36,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368086 states. [2018-10-05 09:55:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368086 to 284887. [2018-10-05 09:55:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284887 states. [2018-10-05 09:55:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284887 states to 284887 states and 1994361 transitions. [2018-10-05 09:55:43,452 INFO L78 Accepts]: Start accepts. Automaton has 284887 states and 1994361 transitions. Word has length 36 [2018-10-05 09:55:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:55:43,452 INFO L480 AbstractCegarLoop]: Abstraction has 284887 states and 1994361 transitions. [2018-10-05 09:55:43,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:55:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 284887 states and 1994361 transitions. [2018-10-05 09:55:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:55:43,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:55:43,468 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:55:43,468 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:55:43,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:55:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1170725097, now seen corresponding path program 5 times [2018-10-05 09:55:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:55:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:55:43,850 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-10-05 09:55:46,908 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-05 09:55:47,074 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-10-05 09:55:47,782 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2018-10-05 09:55:47,918 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-10-05 09:55:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:55:48,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:55:48,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-05 09:55:48,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-05 09:55:48,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-05 09:55:48,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2018-10-05 09:55:48,422 INFO L87 Difference]: Start difference. First operand 284887 states and 1994361 transitions. Second operand 27 states. [2018-10-05 09:55:48,864 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-05 09:55:49,224 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-05 09:55:49,363 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-05 09:55:49,524 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-05 09:55:49,701 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2018-10-05 09:55:49,868 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-10-05 09:55:50,145 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2018-10-05 09:55:50,290 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-05 09:55:50,460 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-05 09:55:50,643 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2018-10-05 09:55:50,806 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-05 09:55:50,943 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-10-05 09:55:51,566 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-05 09:55:51,783 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-10-05 09:55:52,082 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2018-10-05 09:55:53,202 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-05 09:55:53,401 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2018-10-05 09:55:53,567 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-05 09:55:53,743 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-05 09:55:54,170 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-10-05 09:55:54,383 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2018-10-05 09:55:54,682 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-10-05 09:56:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:56:01,317 INFO L93 Difference]: Finished difference Result 487654 states and 3409678 transitions. [2018-10-05 09:56:01,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-05 09:56:01,317 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 36 [2018-10-05 09:56:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:56:03,571 INFO L225 Difference]: With dead ends: 487654 [2018-10-05 09:56:03,571 INFO L226 Difference]: Without dead ends: 487654 [2018-10-05 09:56:03,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1113, Invalid=2669, Unknown=0, NotChecked=0, Total=3782 [2018-10-05 09:56:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487654 states. [2018-10-05 09:56:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487654 to 481009. [2018-10-05 09:56:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481009 states. [2018-10-05 09:56:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481009 states to 481009 states and 3367215 transitions. [2018-10-05 09:56:20,323 INFO L78 Accepts]: Start accepts. Automaton has 481009 states and 3367215 transitions. Word has length 36 [2018-10-05 09:56:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:56:20,323 INFO L480 AbstractCegarLoop]: Abstraction has 481009 states and 3367215 transitions. [2018-10-05 09:56:20,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-05 09:56:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 481009 states and 3367215 transitions. [2018-10-05 09:56:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:56:20,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:56:20,340 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:56:20,340 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:56:20,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:56:20,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1170963177, now seen corresponding path program 6 times [2018-10-05 09:56:20,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:56:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:56:21,165 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-10-05 09:56:21,529 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2018-10-05 09:56:21,670 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2018-10-05 09:56:21,896 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2018-10-05 09:56:22,133 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 50 [2018-10-05 09:56:22,482 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2018-10-05 09:56:22,840 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 75 [2018-10-05 09:56:23,075 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2018-10-05 09:56:23,431 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2018-10-05 09:56:23,712 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2018-10-05 09:56:23,957 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 60 [2018-10-05 09:56:24,286 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 59 [2018-10-05 09:56:24,608 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 54 [2018-10-05 09:56:24,925 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 49 [2018-10-05 09:56:25,189 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 45 [2018-10-05 09:56:25,525 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49 [2018-10-05 09:56:25,809 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 43 [2018-10-05 09:56:47,522 WARN L178 SmtUtils]: Spent 21.63 s on a formula simplification. DAG size of input: 103 DAG size of output: 41 [2018-10-05 09:56:47,762 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 36 [2018-10-05 09:56:48,007 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2018-10-05 09:56:48,198 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2018-10-05 09:56:48,360 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2018-10-05 09:56:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:56:48,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:56:48,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-05 09:56:48,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-05 09:56:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-05 09:56:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=851, Unknown=0, NotChecked=0, Total=930 [2018-10-05 09:56:48,577 INFO L87 Difference]: Start difference. First operand 481009 states and 3367215 transitions. Second operand 31 states. [2018-10-05 09:56:49,384 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2018-10-05 09:56:49,597 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2018-10-05 09:56:49,857 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2018-10-05 09:56:50,224 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 75 [2018-10-05 09:56:50,721 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2018-10-05 09:56:51,069 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 86 [2018-10-05 09:56:51,501 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 81 [2018-10-05 09:56:51,840 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2018-10-05 09:56:52,312 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 78 [2018-10-05 09:56:52,664 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2018-10-05 09:56:52,988 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2018-10-05 09:56:53,411 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 79 [2018-10-05 09:56:53,731 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 76 [2018-10-05 09:56:54,081 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2018-10-05 09:56:54,399 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2018-10-05 09:56:54,761 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 85 [2018-10-05 09:56:55,262 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 80 [2018-10-05 09:56:55,603 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 78 [2018-10-05 09:56:55,962 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2018-10-05 09:56:56,293 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2018-10-05 09:56:56,614 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2018-10-05 09:56:56,979 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2018-10-05 09:56:57,410 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 81 [2018-10-05 09:56:57,711 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2018-10-05 09:56:58,113 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2018-10-05 09:56:58,641 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 79 [2018-10-05 09:56:59,086 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2018-10-05 09:56:59,485 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2018-10-05 09:57:00,082 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 77 [2018-10-05 09:57:01,822 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 89 [2018-10-05 09:57:02,350 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 84 [2018-10-05 09:57:02,735 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2018-10-05 09:57:03,064 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 85 [2018-10-05 09:57:03,595 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2018-10-05 09:57:04,227 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2018-10-05 09:57:04,688 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 82 [2018-10-05 09:57:05,043 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 81 [2018-10-05 09:57:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:57:11,251 INFO L93 Difference]: Finished difference Result 541218 states and 3785629 transitions. [2018-10-05 09:57:11,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-05 09:57:11,251 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 36 [2018-10-05 09:57:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:57:13,643 INFO L225 Difference]: With dead ends: 541218 [2018-10-05 09:57:13,644 INFO L226 Difference]: Without dead ends: 541218 [2018-10-05 09:57:13,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=1618, Invalid=3932, Unknown=0, NotChecked=0, Total=5550 [2018-10-05 09:57:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541218 states. [2018-10-05 09:57:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541218 to 481401. [2018-10-05 09:57:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481401 states. [2018-10-05 09:57:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481401 states to 481401 states and 3369959 transitions. [2018-10-05 09:57:31,373 INFO L78 Accepts]: Start accepts. Automaton has 481401 states and 3369959 transitions. Word has length 36 [2018-10-05 09:57:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:57:31,373 INFO L480 AbstractCegarLoop]: Abstraction has 481401 states and 3369959 transitions. [2018-10-05 09:57:31,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-05 09:57:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 481401 states and 3369959 transitions. [2018-10-05 09:57:31,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:57:31,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:57:31,392 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:57:31,392 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:57:31,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:57:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash -712659177, now seen corresponding path program 7 times [2018-10-05 09:57:31,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:57:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:57:31,678 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-05 09:57:32,924 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2018-10-05 09:57:33,061 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2018-10-05 09:57:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:57:33,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:57:33,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-05 09:57:33,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-05 09:57:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-05 09:57:33,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:57:33,525 INFO L87 Difference]: Start difference. First operand 481401 states and 3369959 transitions. Second operand 29 states. [2018-10-05 09:57:34,465 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2018-10-05 09:57:34,620 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-05 09:57:35,331 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-05 09:57:35,459 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-05 09:57:35,710 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-05 09:57:37,744 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-05 09:57:37,898 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2018-10-05 09:57:41,737 WARN L178 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-05 09:57:41,874 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-05 09:58:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:58:06,317 INFO L93 Difference]: Finished difference Result 576154 states and 4029501 transitions. [2018-10-05 09:58:06,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-05 09:58:06,318 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2018-10-05 09:58:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:58:08,697 INFO L225 Difference]: With dead ends: 576154 [2018-10-05 09:58:08,697 INFO L226 Difference]: Without dead ends: 576154 [2018-10-05 09:58:08,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=922, Invalid=2270, Unknown=0, NotChecked=0, Total=3192 [2018-10-05 09:58:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576154 states. [2018-10-05 09:58:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576154 to 558751. [2018-10-05 09:58:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558751 states. [2018-10-05 09:58:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558751 states to 558751 states and 3911409 transitions. [2018-10-05 09:58:29,144 INFO L78 Accepts]: Start accepts. Automaton has 558751 states and 3911409 transitions. Word has length 36 [2018-10-05 09:58:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:58:29,144 INFO L480 AbstractCegarLoop]: Abstraction has 558751 states and 3911409 transitions. [2018-10-05 09:58:29,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-05 09:58:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 558751 states and 3911409 transitions. [2018-10-05 09:58:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:58:29,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:58:29,164 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-05 09:58:29,164 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:58:29,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:58:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1457182185, now seen corresponding path program 8 times [2018-10-05 09:58:29,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:58:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:58:29,540 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2018-10-05 09:58:29,890 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2018-10-05 09:58:30,058 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-05 09:58:30,219 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-05 09:58:30,377 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2018-10-05 09:58:30,620 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2018-10-05 09:58:30,804 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 42 [2018-10-05 09:58:31,003 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 41 [2018-10-05 09:58:31,230 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2018-10-05 09:58:31,416 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2018-10-05 09:58:31,609 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 36 [2018-10-05 09:58:31,763 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2018-10-05 09:58:32,207 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2018-10-05 09:58:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-05 09:58:32,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-05 09:58:32,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-05 09:58:32,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-05 09:58:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-05 09:58:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2018-10-05 09:58:32,398 INFO L87 Difference]: Start difference. First operand 558751 states and 3911409 transitions. Second operand 29 states. [2018-10-05 09:58:33,028 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2018-10-05 09:58:33,196 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 57 [2018-10-05 09:58:33,511 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-05 09:58:33,720 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2018-10-05 09:58:33,931 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2018-10-05 09:58:34,157 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-10-05 09:58:34,359 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2018-10-05 09:58:34,591 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2018-10-05 09:58:34,776 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2018-10-05 09:58:34,956 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-10-05 09:58:35,184 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-05 09:58:35,415 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-05 09:58:35,618 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2018-10-05 09:58:35,802 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2018-10-05 09:58:36,010 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2018-10-05 09:58:36,247 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-10-05 09:58:36,486 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2018-10-05 09:58:36,682 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-05 09:58:36,928 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-05 09:58:37,236 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-05 09:58:37,621 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-05 09:58:37,854 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-10-05 09:58:38,853 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-05 09:58:39,117 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-05 09:58:39,354 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2018-10-05 09:58:41,988 WARN L178 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2018-10-05 09:58:42,210 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2018-10-05 09:58:42,433 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2018-10-05 09:58:42,923 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2018-10-05 09:58:43,101 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 53 [2018-10-05 09:58:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-05 09:58:51,452 INFO L93 Difference]: Finished difference Result 799445 states and 5592257 transitions. [2018-10-05 09:58:51,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-05 09:58:51,452 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2018-10-05 09:58:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-05 09:59:21,740 INFO L225 Difference]: With dead ends: 799445 [2018-10-05 09:59:21,740 INFO L226 Difference]: Without dead ends: 799445 [2018-10-05 09:59:21,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1202, Invalid=2958, Unknown=0, NotChecked=0, Total=4160 [2018-10-05 09:59:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799445 states. [2018-10-05 09:59:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799445 to 792945. [2018-10-05 09:59:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792945 states. [2018-10-05 09:59:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792945 states to 792945 states and 5550767 transitions. [2018-10-05 09:59:49,878 INFO L78 Accepts]: Start accepts. Automaton has 792945 states and 5550767 transitions. Word has length 36 [2018-10-05 09:59:49,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-05 09:59:49,879 INFO L480 AbstractCegarLoop]: Abstraction has 792945 states and 5550767 transitions. [2018-10-05 09:59:49,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-05 09:59:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 792945 states and 5550767 transitions. [2018-10-05 09:59:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-05 09:59:49,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-05 09:59:49,897 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] [2018-10-05 09:59:49,897 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr3ASSERT_VIOLATIONASSERT, mainErr5ASSERT_VIOLATIONASSERT, mainErr2ASSERT_VIOLATIONASSERT, mainErr6ASSERT_VIOLATIONASSERT, mainErr7ASSERT_VIOLATIONASSERT, mainErr10ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr9ASSERT_VIOLATIONASSERT, mainErr8ASSERT_VIOLATIONASSERT, mainErr4ASSERT_VIOLATIONASSERT, mainErr11ASSERT_VIOLATIONASSERT]=== [2018-10-05 09:59:49,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-05 09:59:49,897 INFO L82 PathProgramCache]: Analyzing trace with hash -297291824, now seen corresponding path program 1 times [2018-10-05 09:59:49,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-05 09:59:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-05 09:59:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-05 09:59:50,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-05 09:59:50,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-05 09:59:50,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-05 09:59:50,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-05 09:59:50,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-10-05 09:59:50,197 INFO L87 Difference]: Start difference. First operand 792945 states and 5550767 transitions. Second operand 18 states.