java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:43:28,208 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:43:28,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:43:28,225 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-10 15:43:28,260 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:43:28,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:43:28,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:43:28,279 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:43:28,279 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:43:28,280 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:43:28,280 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:43:28,280 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:43:28,281 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:43:28,281 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:43:28,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:43:28,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:43:28,282 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:43:28,282 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:43:28,283 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:43:28,283 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:43:28,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:43:28,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:43:28,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:43:28,360 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:43:28,361 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:43:28,361 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl [2018-10-10 15:43:28,362 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl' [2018-10-10 15:43:28,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:43:28,439 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:43:28,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:43:28,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:43:28,441 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:43:28,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... [2018-10-10 15:43:28,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:43:28,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:43:28,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:43:28,527 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:43:28,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:43:28,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:43:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:43:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:43:29,460 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:43:29,461 INFO L202 PluginConnector]: Adding new model optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:43:29 BoogieIcfgContainer [2018-10-10 15:43:29,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:43:29,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:43:29,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:43:29,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:43:29,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:28" (1/2) ... [2018-10-10 15:43:29,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f52bc68 and model type optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:43:29, skipping insertion in model container [2018-10-10 15:43:29,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:43:29" (2/2) ... [2018-10-10 15:43:29,469 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_false-valid-memtrack.i_35.bpl [2018-10-10 15:43:29,479 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:43:29,488 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:43:29,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:43:29,535 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:43:29,536 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:43:29,536 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:43:29,537 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:43:29,537 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:43:29,537 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:43:29,537 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:43:29,537 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:43:29,537 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:43:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-10 15:43:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-10 15:43:29,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:29,584 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:29,586 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:29,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 679445538, now seen corresponding path program 1 times [2018-10-10 15:43:29,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:31,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:43:31,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-10 15:43:31,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-10 15:43:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-10 15:43:31,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-10 15:43:31,361 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 17 states. [2018-10-10 15:43:32,664 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-10-10 15:43:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:33,417 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-10 15:43:33,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-10 15:43:33,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2018-10-10 15:43:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:33,436 INFO L225 Difference]: With dead ends: 154 [2018-10-10 15:43:33,436 INFO L226 Difference]: Without dead ends: 154 [2018-10-10 15:43:33,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:43:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-10 15:43:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2018-10-10 15:43:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-10 15:43:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-10 15:43:33,489 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 109 [2018-10-10 15:43:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:33,491 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-10 15:43:33,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-10 15:43:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-10 15:43:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-10 15:43:33,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:33,496 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:33,497 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:33,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:33,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1648257160, now seen corresponding path program 1 times [2018-10-10 15:43:33,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:34,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:34,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-10 15:43:34,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-10 15:43:34,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-10 15:43:34,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:43:34,221 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 19 states. [2018-10-10 15:43:35,101 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-10 15:43:35,530 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-10 15:43:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:36,610 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-10 15:43:36,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-10 15:43:36,612 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2018-10-10 15:43:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:36,614 INFO L225 Difference]: With dead ends: 177 [2018-10-10 15:43:36,615 INFO L226 Difference]: Without dead ends: 177 [2018-10-10 15:43:36,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2018-10-10 15:43:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-10 15:43:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2018-10-10 15:43:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-10 15:43:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-10 15:43:36,630 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 132 [2018-10-10 15:43:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:36,631 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-10 15:43:36,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-10 15:43:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-10 15:43:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-10 15:43:36,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:36,634 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:36,634 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:36,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash 610280290, now seen corresponding path program 2 times [2018-10-10 15:43:36,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:37,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:37,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-10 15:43:37,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-10 15:43:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-10 15:43:37,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:43:37,621 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 21 states. [2018-10-10 15:43:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:39,897 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-10 15:43:39,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-10 15:43:39,900 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2018-10-10 15:43:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:39,908 INFO L225 Difference]: With dead ends: 200 [2018-10-10 15:43:39,908 INFO L226 Difference]: Without dead ends: 200 [2018-10-10 15:43:39,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:43:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-10 15:43:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2018-10-10 15:43:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-10 15:43:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-10 15:43:39,933 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 155 [2018-10-10 15:43:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:39,934 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-10 15:43:39,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-10 15:43:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-10 15:43:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-10 15:43:39,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:39,938 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:39,938 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:39,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1040306232, now seen corresponding path program 3 times [2018-10-10 15:43:39,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:41,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:41,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-10 15:43:41,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-10 15:43:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-10 15:43:41,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:43:41,654 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 23 states. [2018-10-10 15:43:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:44,215 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-10 15:43:44,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 15:43:44,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2018-10-10 15:43:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:44,218 INFO L225 Difference]: With dead ends: 223 [2018-10-10 15:43:44,218 INFO L226 Difference]: Without dead ends: 223 [2018-10-10 15:43:44,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=516, Invalid=1740, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:43:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-10 15:43:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2018-10-10 15:43:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-10 15:43:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-10 15:43:44,229 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 178 [2018-10-10 15:43:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:44,230 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-10 15:43:44,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-10 15:43:44,231 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-10 15:43:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-10 15:43:44,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:44,234 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:44,234 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:44,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:44,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1802759518, now seen corresponding path program 4 times [2018-10-10 15:43:44,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:46,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:46,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 15:43:46,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 15:43:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 15:43:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:43:46,356 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 33 states. [2018-10-10 15:43:47,226 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-10 15:43:48,902 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:43:49,103 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-10 15:43:50,684 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:43:50,867 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:43:51,094 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:43:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:51,321 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-10 15:43:51,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:43:51,323 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 201 [2018-10-10 15:43:51,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:51,325 INFO L225 Difference]: With dead ends: 246 [2018-10-10 15:43:51,325 INFO L226 Difference]: Without dead ends: 246 [2018-10-10 15:43:51,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2018-10-10 15:43:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-10 15:43:51,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2018-10-10 15:43:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-10 15:43:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-10 15:43:51,335 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 201 [2018-10-10 15:43:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:51,336 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-10 15:43:51,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 15:43:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-10 15:43:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-10 15:43:51,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:51,339 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:51,340 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:51,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1111275768, now seen corresponding path program 5 times [2018-10-10 15:43:51,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:52,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:52,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 15:43:52,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 15:43:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 15:43:52,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:43:52,959 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 33 states. [2018-10-10 15:43:54,068 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-10 15:43:54,255 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:43:54,463 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:43:54,617 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:43:54,826 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-10 15:43:55,000 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:43:55,580 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:43:55,877 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:43:56,084 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-10 15:43:56,258 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-10 15:43:56,721 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-10-10 15:43:57,399 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-10 15:43:57,668 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2018-10-10 15:43:57,891 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2018-10-10 15:43:58,122 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-10 15:43:58,564 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-10 15:43:59,007 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-10 15:43:59,245 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-10 15:43:59,496 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-10 15:43:59,697 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-10 15:43:59,919 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-10-10 15:44:00,158 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-10 15:44:00,375 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-10 15:44:00,558 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:44:00,740 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-10 15:44:00,945 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:44:01,488 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:44:01,670 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:44:01,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:01,833 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-10 15:44:01,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-10 15:44:01,835 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2018-10-10 15:44:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:01,836 INFO L225 Difference]: With dead ends: 269 [2018-10-10 15:44:01,837 INFO L226 Difference]: Without dead ends: 269 [2018-10-10 15:44:01,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1404, Invalid=4758, Unknown=0, NotChecked=0, Total=6162 [2018-10-10 15:44:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-10 15:44:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2018-10-10 15:44:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-10 15:44:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-10 15:44:01,845 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 224 [2018-10-10 15:44:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:01,846 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-10 15:44:01,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 15:44:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-10 15:44:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-10 15:44:01,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:01,850 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:01,850 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:01,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:01,851 INFO L82 PathProgramCache]: Analyzing trace with hash -642297374, now seen corresponding path program 6 times [2018-10-10 15:44:01,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:03,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:03,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:44:03,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:44:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:44:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:44:03,108 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 29 states. [2018-10-10 15:44:06,249 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-10 15:44:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:07,278 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-10 15:44:07,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-10 15:44:07,278 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 247 [2018-10-10 15:44:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:07,280 INFO L225 Difference]: With dead ends: 292 [2018-10-10 15:44:07,280 INFO L226 Difference]: Without dead ends: 292 [2018-10-10 15:44:07,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-10-10 15:44:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-10 15:44:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2018-10-10 15:44:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-10 15:44:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-10 15:44:07,288 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 247 [2018-10-10 15:44:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:07,288 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-10 15:44:07,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:44:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-10 15:44:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-10 15:44:07,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:07,290 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:07,291 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:07,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1086434888, now seen corresponding path program 7 times [2018-10-10 15:44:07,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:08,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:08,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-10 15:44:08,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-10 15:44:08,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-10 15:44:08,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2018-10-10 15:44:08,722 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 31 states. [2018-10-10 15:44:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:13,570 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-10 15:44:13,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:44:13,571 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 270 [2018-10-10 15:44:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:13,574 INFO L225 Difference]: With dead ends: 315 [2018-10-10 15:44:13,574 INFO L226 Difference]: Without dead ends: 315 [2018-10-10 15:44:13,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:44:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-10 15:44:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2018-10-10 15:44:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-10 15:44:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-10 15:44:13,588 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 270 [2018-10-10 15:44:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:13,589 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-10 15:44:13,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-10 15:44:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-10 15:44:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-10 15:44:13,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:13,591 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:13,591 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:13,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:13,592 INFO L82 PathProgramCache]: Analyzing trace with hash 966123810, now seen corresponding path program 8 times [2018-10-10 15:44:13,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:16,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:16,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:44:16,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:44:16,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:44:16,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:44:16,600 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 41 states. [2018-10-10 15:44:20,238 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:44:20,716 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-10 15:44:20,950 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:44:24,295 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:44:24,473 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:44:24,686 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:44:24,965 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:44:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:25,284 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-10-10 15:44:25,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-10 15:44:25,285 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 293 [2018-10-10 15:44:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:25,287 INFO L225 Difference]: With dead ends: 338 [2018-10-10 15:44:25,287 INFO L226 Difference]: Without dead ends: 338 [2018-10-10 15:44:25,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1182, Invalid=7008, Unknown=0, NotChecked=0, Total=8190 [2018-10-10 15:44:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-10 15:44:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 317. [2018-10-10 15:44:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-10 15:44:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-10 15:44:25,296 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 293 [2018-10-10 15:44:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:25,296 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-10 15:44:25,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:44:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-10 15:44:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-10 15:44:25,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:25,299 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:25,299 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:25,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:25,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1154652792, now seen corresponding path program 9 times [2018-10-10 15:44:25,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:26,322 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-10 15:44:27,102 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-10 15:44:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:28,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:28,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:44:28,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:44:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:44:28,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:44:28,796 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 41 states. [2018-10-10 15:44:30,421 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:44:30,688 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:44:30,894 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:44:31,148 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-10 15:44:31,324 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:44:31,820 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:44:32,191 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:44:32,401 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-10 15:44:32,561 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:44:33,062 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:44:33,298 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:44:33,576 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:44:33,793 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-10 15:44:34,007 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-10 15:44:34,171 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:44:34,669 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:44:34,900 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-10 15:44:35,183 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-10 15:44:35,409 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-10 15:44:35,566 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:44:36,115 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 15:44:36,318 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-10 15:44:36,835 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:44:36,997 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:44:37,539 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-10 15:44:37,730 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-10 15:44:37,950 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-10 15:44:38,221 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-10 15:44:38,437 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-10 15:44:38,613 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:44:38,958 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:44:39,229 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:44:39,436 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-10 15:44:39,696 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-10 15:44:39,849 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:44:40,122 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:44:40,303 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:44:40,506 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:44:40,726 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:44:41,073 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:44:41,277 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:44:41,499 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:44:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:41,667 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-10 15:44:41,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-10 15:44:41,667 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2018-10-10 15:44:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:41,669 INFO L225 Difference]: With dead ends: 361 [2018-10-10 15:44:41,669 INFO L226 Difference]: Without dead ends: 361 [2018-10-10 15:44:41,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1957, Invalid=9599, Unknown=0, NotChecked=0, Total=11556 [2018-10-10 15:44:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-10 15:44:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2018-10-10 15:44:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-10 15:44:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-10 15:44:41,678 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 316 [2018-10-10 15:44:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:41,678 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-10 15:44:41,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:44:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-10 15:44:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-10 15:44:41,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:41,681 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:41,681 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:41,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:41,681 INFO L82 PathProgramCache]: Analyzing trace with hash 517718114, now seen corresponding path program 10 times [2018-10-10 15:44:41,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 1175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:45,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:45,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:44:45,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:44:45,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:44:45,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:44:45,413 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 41 states. [2018-10-10 15:44:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:54,141 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-10 15:44:54,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-10 15:44:54,141 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 339 [2018-10-10 15:44:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:54,143 INFO L225 Difference]: With dead ends: 384 [2018-10-10 15:44:54,143 INFO L226 Difference]: Without dead ends: 384 [2018-10-10 15:44:54,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1173, Invalid=7199, Unknown=0, NotChecked=0, Total=8372 [2018-10-10 15:44:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-10 15:44:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 363. [2018-10-10 15:44:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-10 15:44:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-10 15:44:54,152 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 339 [2018-10-10 15:44:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:54,153 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-10 15:44:54,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:44:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-10 15:44:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-10 15:44:54,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:54,155 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:54,156 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:54,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1647996104, now seen corresponding path program 11 times [2018-10-10 15:44:54,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:56,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:56,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-10 15:44:56,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-10 15:44:56,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-10 15:44:56,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2018-10-10 15:44:56,602 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 39 states. [2018-10-10 15:45:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:05,522 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-10 15:45:05,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-10 15:45:05,523 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2018-10-10 15:45:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:05,525 INFO L225 Difference]: With dead ends: 407 [2018-10-10 15:45:05,525 INFO L226 Difference]: Without dead ends: 407 [2018-10-10 15:45:05,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1092, Invalid=6564, Unknown=0, NotChecked=0, Total=7656 [2018-10-10 15:45:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-10 15:45:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 386. [2018-10-10 15:45:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-10 15:45:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-10 15:45:05,533 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 362 [2018-10-10 15:45:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:05,533 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-10 15:45:05,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-10 15:45:05,533 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-10 15:45:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-10 15:45:05,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:05,536 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:05,536 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:05,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:05,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1497165730, now seen corresponding path program 12 times [2018-10-10 15:45:05,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 0 proven. 1686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:08,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:08,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:45:08,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:45:08,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:45:08,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:45:08,842 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 41 states. [2018-10-10 15:45:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:17,767 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-10-10 15:45:17,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-10 15:45:17,767 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 385 [2018-10-10 15:45:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:17,770 INFO L225 Difference]: With dead ends: 430 [2018-10-10 15:45:17,770 INFO L226 Difference]: Without dead ends: 430 [2018-10-10 15:45:17,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1164, Invalid=7392, Unknown=0, NotChecked=0, Total=8556 [2018-10-10 15:45:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-10 15:45:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 409. [2018-10-10 15:45:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-10 15:45:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-10 15:45:17,778 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 385 [2018-10-10 15:45:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:17,779 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-10 15:45:17,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:45:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-10 15:45:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-10 15:45:17,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:17,782 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:17,782 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:17,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:17,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1880933384, now seen corresponding path program 13 times [2018-10-10 15:45:17,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:19,754 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-10 15:45:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:22,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:22,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-10 15:45:22,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-10 15:45:22,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-10 15:45:22,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:45:22,134 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 43 states. [2018-10-10 15:45:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:32,907 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-10 15:45:32,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-10 15:45:32,907 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 408 [2018-10-10 15:45:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:32,909 INFO L225 Difference]: With dead ends: 453 [2018-10-10 15:45:32,909 INFO L226 Difference]: Without dead ends: 453 [2018-10-10 15:45:32,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1236, Invalid=8270, Unknown=0, NotChecked=0, Total=9506 [2018-10-10 15:45:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-10 15:45:32,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 432. [2018-10-10 15:45:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-10 15:45:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-10-10 15:45:32,917 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 408 [2018-10-10 15:45:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:32,918 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-10-10 15:45:32,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-10 15:45:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-10-10 15:45:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-10 15:45:32,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:32,921 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:32,921 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:32,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:32,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1567452898, now seen corresponding path program 14 times [2018-10-10 15:45:32,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:34,827 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-10 15:45:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 0 proven. 2289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:37,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:37,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-10 15:45:37,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-10 15:45:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-10 15:45:37,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2018-10-10 15:45:37,899 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 51 states. [2018-10-10 15:45:39,812 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:45:40,155 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:45:40,353 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:45:40,559 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:45:40,737 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-10 15:45:41,362 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:45:41,860 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-10 15:45:42,736 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-10 15:45:51,574 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-10 15:45:51,775 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-10 15:45:52,036 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 15:45:52,385 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-10 15:45:52,613 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-10 15:45:53,209 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:45:53,561 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:45:53,799 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:45:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:54,047 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2018-10-10 15:45:54,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-10 15:45:54,048 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 431 [2018-10-10 15:45:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:54,050 INFO L225 Difference]: With dead ends: 476 [2018-10-10 15:45:54,050 INFO L226 Difference]: Without dead ends: 476 [2018-10-10 15:45:54,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1701, Invalid=12341, Unknown=0, NotChecked=0, Total=14042 [2018-10-10 15:45:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-10 15:45:54,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 455. [2018-10-10 15:45:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-10 15:45:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-10 15:45:54,059 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 431 [2018-10-10 15:45:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:54,060 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-10 15:45:54,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-10 15:45:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-10 15:45:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-10 15:45:54,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:54,063 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:54,063 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:54,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1678273352, now seen corresponding path program 15 times [2018-10-10 15:45:54,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:59,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:59,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-10 15:45:59,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-10 15:45:59,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-10 15:45:59,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2018-10-10 15:45:59,194 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 56 states. [2018-10-10 15:46:01,630 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-10 15:46:02,383 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-10 15:46:02,612 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-10 15:46:02,896 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-10 15:46:03,318 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-10 15:46:03,562 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-10 15:46:03,811 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-10 15:46:04,007 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:46:04,654 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-10 15:46:04,943 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-10 15:46:05,321 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-10 15:46:05,597 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-10 15:46:05,866 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-10 15:46:06,062 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-10 15:46:06,726 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-10 15:46:07,137 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-10 15:46:07,520 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-10 15:46:07,784 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:46:08,040 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2018-10-10 15:46:08,313 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-10 15:46:08,975 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-10 15:46:09,505 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-10 15:46:09,696 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-10 15:46:10,366 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:10,553 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:46:11,223 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:11,427 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:46:11,617 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-10 15:46:12,156 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:12,347 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:46:13,029 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:13,244 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:46:13,993 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-10 15:46:14,183 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-10 15:46:14,852 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 15:46:15,039 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-10 15:46:15,705 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-10 15:46:15,898 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:46:16,585 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-10 15:46:16,812 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-10 15:46:17,099 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-10 15:46:17,466 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-10 15:46:17,728 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-10 15:46:17,936 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:46:18,340 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-10 15:46:18,755 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-10 15:46:19,005 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-10 15:46:19,313 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-10 15:46:19,483 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:46:19,795 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-10 15:46:20,002 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:46:20,229 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-10 15:46:20,475 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-10 15:46:21,023 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-10 15:46:21,442 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:46:21,642 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-10 15:46:21,860 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:46:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:22,058 INFO L93 Difference]: Finished difference Result 499 states and 499 transitions. [2018-10-10 15:46:22,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-10 15:46:22,059 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 454 [2018-10-10 15:46:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:22,061 INFO L225 Difference]: With dead ends: 499 [2018-10-10 15:46:22,061 INFO L226 Difference]: Without dead ends: 499 [2018-10-10 15:46:22,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=2679, Invalid=18491, Unknown=0, NotChecked=0, Total=21170 [2018-10-10 15:46:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-10 15:46:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2018-10-10 15:46:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-10 15:46:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2018-10-10 15:46:22,069 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 454 [2018-10-10 15:46:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:22,070 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2018-10-10 15:46:22,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-10 15:46:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2018-10-10 15:46:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-10 15:46:22,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:22,073 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:46:22,073 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:22,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2061418974, now seen corresponding path program 16 times [2018-10-10 15:46:22,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:23,485 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:46:24,305 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-10 15:46:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 0 proven. 2984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:46:28,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:28,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:46:28,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:46:28,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:46:28,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:46:28,493 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand 57 states. [2018-10-10 15:46:35,995 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:46:36,195 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:46:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:44,333 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2018-10-10 15:46:44,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-10 15:46:44,333 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 477 [2018-10-10 15:46:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:44,335 INFO L225 Difference]: With dead ends: 522 [2018-10-10 15:46:44,336 INFO L226 Difference]: Without dead ends: 522 [2018-10-10 15:46:44,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1685, Invalid=14571, Unknown=0, NotChecked=0, Total=16256 [2018-10-10 15:46:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-10 15:46:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 501. [2018-10-10 15:46:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-10-10 15:46:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2018-10-10 15:46:44,344 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 477 [2018-10-10 15:46:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:44,345 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2018-10-10 15:46:44,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:46:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2018-10-10 15:46:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-10 15:46:44,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:44,348 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:46:44,349 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:44,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:44,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1110532744, now seen corresponding path program 17 times [2018-10-10 15:46:44,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 3366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:46:49,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:49,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:46:49,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:46:49,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:46:49,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2995, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:46:49,748 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 57 states. [2018-10-10 15:46:51,503 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-10 15:46:51,758 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:46:52,112 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:46:52,306 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:46:52,522 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-10 15:46:52,710 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:46:53,354 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:46:53,847 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:46:54,088 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-10 15:46:54,342 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:46:55,026 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:46:55,329 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:46:55,708 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:46:55,958 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-10 15:46:56,206 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:46:56,395 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:46:56,803 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 15:46:57,087 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-10 15:46:57,378 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:46:57,762 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-10 15:46:58,023 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:46:58,290 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-10 15:46:58,490 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-10 15:46:59,148 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-10 15:46:59,487 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-10 15:46:59,885 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:47:00,171 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-10 15:47:00,446 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2018-10-10 15:47:00,644 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:47:01,051 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:47:01,328 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-10 15:47:01,625 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:47:02,019 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-10 15:47:02,304 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2018-10-10 15:47:02,522 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:03,240 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2018-10-10 15:47:03,452 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2018-10-10 15:47:04,167 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-10-10 15:47:04,404 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:04,637 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2018-10-10 15:47:05,229 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-10 15:47:05,448 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:06,165 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:06,379 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:07,099 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-10 15:47:07,312 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:08,036 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:08,252 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:08,634 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-10 15:47:08,981 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:47:09,235 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-10 15:47:09,550 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-10 15:47:09,986 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-10 15:47:10,268 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-10 15:47:10,502 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2018-10-10 15:47:10,926 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-10-10 15:47:11,305 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-10 15:47:11,563 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-10 15:47:11,906 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2018-10-10 15:47:12,105 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-10 15:47:12,442 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 15:47:12,657 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-10 15:47:12,888 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-10 15:47:13,155 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-10 15:47:13,340 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:47:13,506 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-10 15:47:13,683 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:47:13,894 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:47:14,123 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-10 15:47:14,376 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-10 15:47:14,556 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:47:14,960 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:47:15,162 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:47:15,387 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:47:15,632 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:47:16,035 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:47:16,239 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:47:16,465 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:47:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:47:16,676 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-10 15:47:16,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-10 15:47:16,677 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 500 [2018-10-10 15:47:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:47:16,679 INFO L225 Difference]: With dead ends: 545 [2018-10-10 15:47:16,679 INFO L226 Difference]: Without dead ends: 545 [2018-10-10 15:47:16,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=3448, Invalid=22634, Unknown=0, NotChecked=0, Total=26082 [2018-10-10 15:47:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-10 15:47:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2018-10-10 15:47:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-10 15:47:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 524 transitions. [2018-10-10 15:47:16,686 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 524 transitions. Word has length 500 [2018-10-10 15:47:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:47:16,687 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 524 transitions. [2018-10-10 15:47:16,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:47:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 524 transitions. [2018-10-10 15:47:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-10 15:47:16,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:47:16,691 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:47:16,691 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:47:16,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:47:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1326210402, now seen corresponding path program 18 times [2018-10-10 15:47:16,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:47:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:47:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 3771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:47:22,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:47:22,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-10 15:47:22,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-10 15:47:22,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-10 15:47:22,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3568, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:47:22,654 INFO L87 Difference]: Start difference. First operand 524 states and 524 transitions. Second operand 62 states. [2018-10-10 15:47:25,141 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-10 15:47:25,781 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-10 15:47:26,970 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:47:27,188 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-10 15:47:27,959 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-10 15:47:28,180 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:47:28,467 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:47:28,858 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:47:29,114 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-10 15:47:29,386 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:47:29,584 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:47:30,013 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-10 15:47:30,386 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-10 15:47:30,683 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:47:31,085 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-10 15:47:31,358 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:47:31,636 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-10 15:47:31,841 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-10 15:47:32,537 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-10 15:47:32,841 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-10 15:47:33,249 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:47:33,534 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-10 15:47:33,834 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-10 15:47:34,043 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-10 15:47:34,463 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-10 15:47:34,744 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-10 15:47:35,044 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-10 15:47:35,504 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-10 15:47:35,799 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-10 15:47:36,083 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-10 15:47:36,283 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-10 15:47:36,684 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-10 15:47:36,949 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-10 15:47:37,491 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-10 15:47:37,770 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 15:47:37,982 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 15:47:38,390 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-10 15:47:38,661 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-10 15:47:39,219 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-10 15:47:39,441 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:40,216 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-10 15:47:40,526 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:41,327 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:41,554 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:42,306 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-10 15:47:42,523 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:43,285 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:43,504 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:44,265 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-10 15:47:44,479 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:44,855 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-10 15:47:45,215 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-10 15:47:45,495 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-10 15:47:45,832 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2018-10-10 15:47:46,226 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-10 15:47:46,504 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-10-10 15:47:46,745 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-10 15:47:46,937 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-10 15:47:47,192 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-10 15:47:47,584 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-10 15:47:47,851 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-10 15:47:48,187 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2018-10-10 15:47:48,382 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-10 15:47:48,716 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-10 15:47:48,931 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2018-10-10 15:47:49,162 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-10 15:47:49,430 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-10 15:47:49,623 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-10 15:47:49,957 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:47:50,168 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-10 15:47:50,399 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-10 15:47:50,716 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-10 15:47:50,947 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-10 15:47:51,275 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-10 15:47:51,481 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-10 15:47:51,707 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-10 15:47:51,952 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:47:52,364 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-10 15:47:52,584 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:47:52,806 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:47:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:47:53,012 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2018-10-10 15:47:53,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-10 15:47:53,013 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 523 [2018-10-10 15:47:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:47:53,015 INFO L225 Difference]: With dead ends: 568 [2018-10-10 15:47:53,015 INFO L226 Difference]: Without dead ends: 568 [2018-10-10 15:47:53,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=3776, Invalid=26674, Unknown=0, NotChecked=0, Total=30450 [2018-10-10 15:47:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-10 15:47:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 547. [2018-10-10 15:47:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-10 15:47:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-10 15:47:53,023 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 523 [2018-10-10 15:47:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:47:53,024 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-10 15:47:53,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-10 15:47:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-10 15:47:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-10 15:47:53,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:47:53,028 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:47:53,028 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:47:53,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:47:53,028 INFO L82 PathProgramCache]: Analyzing trace with hash 741627448, now seen corresponding path program 19 times [2018-10-10 15:47:53,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:47:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:47:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 4199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:47:59,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:47:59,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-10 15:47:59,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-10 15:47:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-10 15:47:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3993, Unknown=0, NotChecked=0, Total=4290 [2018-10-10 15:47:59,535 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 66 states. [2018-10-10 15:48:01,860 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:48:08,697 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-10 15:48:08,964 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:48:09,338 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:48:09,564 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:48:10,358 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:48:10,592 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:48:11,121 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:48:11,958 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:48:12,186 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:48:12,673 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:48:13,415 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-10 15:48:13,624 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:48:13,902 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:48:14,277 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-10 15:48:14,548 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-10 15:48:14,858 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-10 15:48:15,089 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-10 15:48:15,502 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-10 15:48:15,813 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-10 15:48:16,455 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-10 15:48:16,707 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2018-10-10 15:48:17,132 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-10 15:48:17,506 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-10 15:48:17,775 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-10 15:48:18,292 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-10 15:48:18,564 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-10 15:48:18,744 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:48:18,990 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2018-10-10 15:48:19,362 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-10 15:48:19,633 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-10 15:48:20,149 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2018-10-10 15:48:20,387 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-10 15:48:20,748 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-10 15:48:20,971 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-10 15:48:21,238 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-10 15:48:21,583 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-10 15:48:21,805 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-10 15:48:22,158 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:48:22,396 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:48:22,631 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-10 15:48:22,912 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-10 15:48:23,110 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-10 15:48:23,464 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-10 15:48:23,684 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-10 15:48:23,926 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-10 15:48:24,197 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-10 15:48:24,389 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-10 15:48:24,727 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:48:24,945 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:48:25,174 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:48:25,428 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-10 15:48:25,911 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:48:26,143 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-10 15:48:26,407 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-10 15:48:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:48:26,733 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2018-10-10 15:48:26,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-10 15:48:26,734 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 546 [2018-10-10 15:48:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:48:26,736 INFO L225 Difference]: With dead ends: 591 [2018-10-10 15:48:26,736 INFO L226 Difference]: Without dead ends: 591 [2018-10-10 15:48:26,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7728 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=3611, Invalid=27895, Unknown=0, NotChecked=0, Total=31506 [2018-10-10 15:48:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-10 15:48:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 570. [2018-10-10 15:48:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-10-10 15:48:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2018-10-10 15:48:26,744 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 546 [2018-10-10 15:48:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:48:26,745 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2018-10-10 15:48:26,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-10 15:48:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2018-10-10 15:48:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-10-10 15:48:26,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:48:26,749 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:48:26,749 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:48:26,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:48:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1629303646, now seen corresponding path program 20 times [2018-10-10 15:48:26,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:48:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:48:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 4231 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:48:28,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:48:28,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-10 15:48:28,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-10 15:48:28,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-10 15:48:28,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:48:28,351 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand 43 states. [2018-10-10 15:48:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:48:29,294 INFO L93 Difference]: Finished difference Result 555 states and 554 transitions. [2018-10-10 15:48:29,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-10 15:48:29,295 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 569 [2018-10-10 15:48:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:48:29,296 INFO L225 Difference]: With dead ends: 555 [2018-10-10 15:48:29,296 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:48:29,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2010, Invalid=4796, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:48:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:48:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:48:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:48:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:48:29,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 569 [2018-10-10 15:48:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:48:29,298 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:48:29,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-10 15:48:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:48:29,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:48:29,304 INFO L202 PluginConnector]: Adding new model optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:48:29 BoogieIcfgContainer [2018-10-10 15:48:29,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:48:29,305 INFO L168 Benchmark]: Toolchain (without parser) took 300866.48 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.7 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 244.2 MB). Peak memory consumption was 247.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:48:29,305 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:48:29,305 INFO L168 Benchmark]: Boogie Preprocessor took 85.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:48:29,306 INFO L168 Benchmark]: RCFGBuilder took 934.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:48:29,306 INFO L168 Benchmark]: TraceAbstraction took 299841.97 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Peak memory consumption was 205.5 MB. Max. memory is 7.1 GB. [2018-10-10 15:48:29,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 934.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 299841.97 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Peak memory consumption was 205.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 221]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 1 error locations. SAFE Result, 299.7s OverallTime, 21 OverallIterations, 21 TraceHistogramMax, 231.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3969 SDtfs, 57830 SDslu, 67561 SDs, 0 SdLazy, 91685 SolverSat, 3389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 82 SyntacticMatches, 17 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47385 ImplicationChecksByTransitivity, 182.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 420 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 55.4s InterpolantComputationTime, 7119 NumberOfCodeBlocks, 7119 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 7098 ConstructedInterpolants, 0 QuantifiedInterpolants, 59335894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 4231/33530 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-48-29-321.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-48-29-321.csv Received shutdown request...