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 0.1.23-093a8c0 [2018-10-14 16:50:52,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:50:52,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:50:52,449 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-14 16:50:52,508 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:50:52,526 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:50:52,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:50:52,529 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:50:52,530 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:50:52,530 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:50:52,530 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:50:52,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:50:52,531 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:50:52,531 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:50:52,531 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:50:52,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:50:52,532 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:50:52,532 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:50:52,533 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:50:52,533 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:50:52,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:50:52,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:50:52,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:50:52,623 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:50:52,624 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:50:52,624 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl [2018-10-14 16:50:52,625 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl' [2018-10-14 16:50:52,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:50:52,699 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:50:52,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:50:52,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:50:52,700 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:50:52,733 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,734 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,767 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,768 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,782 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,786 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,788 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 14.10 04:50:52" (1/1) ... [2018-10-14 16:50:52,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:50:52,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:50:52,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:50:52,800 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:50:52,801 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 14.10 04:50:52" (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 [2018-10-14 16:50:52,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:50:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:50:52,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:50:53,595 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:50:53,596 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 14.10 04:50:53 BoogieIcfgContainer [2018-10-14 16:50:53,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:50:53,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:50:53,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:50:53,601 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:50:53,601 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 14.10 04:50:52" (1/2) ... [2018-10-14 16:50:53,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1354df58 and model type optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:53, skipping insertion in model container [2018-10-14 16:50:53,602 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 14.10 04:50:53" (2/2) ... [2018-10-14 16:50:53,604 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_false-valid-memtrack.i_35.bpl [2018-10-14 16:50:53,614 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:50:53,622 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:50:53,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:50:53,669 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:50:53,669 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:50:53,670 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:50:53,670 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:50:53,670 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:50:53,670 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:50:53,670 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:50:53,670 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:50:53,671 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:50:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-14 16:50:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-14 16:50:53,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:53,706 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] [2018-10-14 16:50:53,707 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:53,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash 679445538, now seen corresponding path program 1 times [2018-10-14 16:50:53,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:54,883 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-14 16:50:55,199 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-14 16:50:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:55,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:50:55,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-14 16:50:55,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-14 16:50:55,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-14 16:50:55,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:50:55,728 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 17 states. [2018-10-14 16:50:57,292 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-14 16:50:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:57,789 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-14 16:50:57,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-14 16:50:57,791 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2018-10-14 16:50:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:57,807 INFO L225 Difference]: With dead ends: 154 [2018-10-14 16:50:57,807 INFO L226 Difference]: Without dead ends: 154 [2018-10-14 16:50:57,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:50:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-14 16:50:57,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2018-10-14 16:50:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-14 16:50:57,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-14 16:50:57,860 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 109 [2018-10-14 16:50:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:57,861 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-14 16:50:57,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-14 16:50:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-14 16:50:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-14 16:50:57,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:57,865 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] [2018-10-14 16:50:57,866 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:57,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:57,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1648257160, now seen corresponding path program 1 times [2018-10-14 16:50:57,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:58,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:58,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-14 16:50:58,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:50:58,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:50:58,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:50:58,654 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 19 states. [2018-10-14 16:50:59,371 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-14 16:50:59,790 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-14 16:51:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:00,937 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-14 16:51:00,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-14 16:51:00,940 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2018-10-14 16:51:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:00,947 INFO L225 Difference]: With dead ends: 177 [2018-10-14 16:51:00,947 INFO L226 Difference]: Without dead ends: 177 [2018-10-14 16:51:00,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:51:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-14 16:51:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2018-10-14 16:51:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-14 16:51:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-14 16:51:00,972 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 132 [2018-10-14 16:51:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:00,973 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-14 16:51:00,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:51:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-14 16:51:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-14 16:51:00,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:00,980 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] [2018-10-14 16:51:00,982 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:00,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:00,982 INFO L82 PathProgramCache]: Analyzing trace with hash 610280290, now seen corresponding path program 2 times [2018-10-14 16:51:00,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:01,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:01,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 16:51:01,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:51:01,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:51:01,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:51:01,996 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 21 states. [2018-10-14 16:51:03,173 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-14 16:51:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:04,251 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-14 16:51:04,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:51:04,252 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2018-10-14 16:51:04,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:04,255 INFO L225 Difference]: With dead ends: 200 [2018-10-14 16:51:04,255 INFO L226 Difference]: Without dead ends: 200 [2018-10-14 16:51:04,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:51:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-14 16:51:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2018-10-14 16:51:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-14 16:51:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-14 16:51:04,269 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 155 [2018-10-14 16:51:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:04,270 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-14 16:51:04,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:51:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-14 16:51:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-14 16:51:04,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:04,274 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] [2018-10-14 16:51:04,275 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:04,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1040306232, now seen corresponding path program 3 times [2018-10-14 16:51:04,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:05,387 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-14 16:51:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:06,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:06,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-14 16:51:06,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:51:06,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:51:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:51:06,129 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 23 states. [2018-10-14 16:51:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:08,892 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-14 16:51:08,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:51:08,894 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2018-10-14 16:51:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:08,896 INFO L225 Difference]: With dead ends: 223 [2018-10-14 16:51:08,896 INFO L226 Difference]: Without dead ends: 223 [2018-10-14 16:51:08,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=516, Invalid=1740, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:51:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-14 16:51:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2018-10-14 16:51:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-14 16:51:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-14 16:51:08,913 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 178 [2018-10-14 16:51:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:08,914 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-14 16:51:08,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:51:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-14 16:51:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-14 16:51:08,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:08,918 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] [2018-10-14 16:51:08,918 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:08,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:08,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1802759518, now seen corresponding path program 4 times [2018-10-14 16:51:08,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:11,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:11,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:51:11,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:51:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:51:11,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:51:11,472 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 33 states. [2018-10-14 16:51:12,715 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-14 16:51:13,058 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-10-14 16:51:14,370 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:51:15,938 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:51:16,162 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:51:16,396 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:51:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:16,628 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-14 16:51:16,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:51:16,629 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 201 [2018-10-14 16:51:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:16,632 INFO L225 Difference]: With dead ends: 246 [2018-10-14 16:51:16,632 INFO L226 Difference]: Without dead ends: 246 [2018-10-14 16:51:16,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:51:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-14 16:51:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2018-10-14 16:51:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-14 16:51:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-14 16:51:16,643 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 201 [2018-10-14 16:51:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:16,644 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-14 16:51:16,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:51:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-14 16:51:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-14 16:51:16,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:16,647 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] [2018-10-14 16:51:16,648 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:16,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1111275768, now seen corresponding path program 5 times [2018-10-14 16:51:16,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:18,340 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:18,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:51:18,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:51:18,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:51:18,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:51:18,342 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 33 states. [2018-10-14 16:51:19,484 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-14 16:51:19,672 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:51:19,893 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:51:20,057 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:51:20,280 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-14 16:51:20,481 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:51:20,927 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-14 16:51:21,165 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:51:21,503 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-14 16:51:21,741 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-14 16:51:21,943 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-14 16:51:22,228 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-14 16:51:22,448 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-10-14 16:51:22,697 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-14 16:51:22,965 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2018-10-14 16:51:23,451 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2018-10-14 16:51:23,693 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-14 16:51:23,890 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-14 16:51:24,618 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-14 16:51:24,864 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-14 16:51:25,129 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-14 16:51:25,340 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-14 16:51:25,603 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-10-14 16:51:25,830 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-14 16:51:25,986 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-14 16:51:26,161 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:51:26,352 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:51:26,563 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-14 16:51:27,129 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:51:27,317 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:51:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:27,475 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-14 16:51:27,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-14 16:51:27,478 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2018-10-14 16:51:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:27,479 INFO L225 Difference]: With dead ends: 269 [2018-10-14 16:51:27,480 INFO L226 Difference]: Without dead ends: 269 [2018-10-14 16:51:27,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1404, Invalid=4758, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:51:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-14 16:51:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2018-10-14 16:51:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-14 16:51:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-14 16:51:27,489 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 224 [2018-10-14 16:51:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:27,489 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-14 16:51:27,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:51:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-14 16:51:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-14 16:51:27,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:27,492 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] [2018-10-14 16:51:27,493 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:27,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash -642297374, now seen corresponding path program 6 times [2018-10-14 16:51:27,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:28,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:28,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-14 16:51:28,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-14 16:51:28,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-14 16:51:28,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-10-14 16:51:28,866 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 29 states. [2018-10-14 16:51:32,184 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-14 16:51:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:33,251 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-14 16:51:33,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-14 16:51:33,251 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 247 [2018-10-14 16:51:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:33,253 INFO L225 Difference]: With dead ends: 292 [2018-10-14 16:51:33,253 INFO L226 Difference]: Without dead ends: 292 [2018-10-14 16:51:33,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 16:51:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-14 16:51:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2018-10-14 16:51:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-14 16:51:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-14 16:51:33,260 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 247 [2018-10-14 16:51:33,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:33,261 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-14 16:51:33,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-14 16:51:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-14 16:51:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-14 16:51:33,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:33,263 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] [2018-10-14 16:51:33,263 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:33,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:33,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1086434888, now seen corresponding path program 7 times [2018-10-14 16:51:33,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:34,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:34,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:51:34,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:51:34,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:51:34,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:51:34,776 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 31 states. [2018-10-14 16:51:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:39,594 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-14 16:51:39,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:51:39,594 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 270 [2018-10-14 16:51:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:39,596 INFO L225 Difference]: With dead ends: 315 [2018-10-14 16:51:39,596 INFO L226 Difference]: Without dead ends: 315 [2018-10-14 16:51:39,598 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 [2018-10-14 16:51:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-14 16:51:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2018-10-14 16:51:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-14 16:51:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-14 16:51:39,604 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 270 [2018-10-14 16:51:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:39,605 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-14 16:51:39,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:51:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-14 16:51:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-14 16:51:39,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:39,607 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] [2018-10-14 16:51:39,607 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:39,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash 966123810, now seen corresponding path program 8 times [2018-10-14 16:51:39,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:42,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:42,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:51:42,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:51:42,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:51:42,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:51:42,831 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 41 states. [2018-10-14 16:51:45,203 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-14 16:51:47,089 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-14 16:51:47,262 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:51:50,615 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:51:50,798 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:51:51,021 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:51:51,372 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:51:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:51,691 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-10-14 16:51:51,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-14 16:51:51,692 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 293 [2018-10-14 16:51:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:51,694 INFO L225 Difference]: With dead ends: 338 [2018-10-14 16:51:51,694 INFO L226 Difference]: Without dead ends: 338 [2018-10-14 16:51:51,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1182, Invalid=7008, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:51:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-14 16:51:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 317. [2018-10-14 16:51:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-14 16:51:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-14 16:51:51,703 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 293 [2018-10-14 16:51:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:51,704 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-14 16:51:51,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:51:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-14 16:51:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-14 16:51:51,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:51,706 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] [2018-10-14 16:51:51,707 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:51,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:51,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1154652792, now seen corresponding path program 9 times [2018-10-14 16:51:51,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:54,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:54,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:51:54,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:51:54,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:51:54,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:51:54,448 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 41 states. [2018-10-14 16:51:55,994 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:51:56,328 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:51:56,539 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:51:56,720 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-14 16:51:56,894 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:51:57,397 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:51:57,765 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-14 16:51:57,968 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-14 16:51:58,131 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-14 16:51:58,634 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-14 16:51:58,871 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:51:59,167 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:51:59,389 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:51:59,607 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-14 16:51:59,769 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:52:00,283 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:52:00,518 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-14 16:52:00,794 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-14 16:52:01,022 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-14 16:52:01,182 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-14 16:52:01,793 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-14 16:52:01,962 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-14 16:52:02,455 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:52:02,618 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:52:03,152 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-14 16:52:03,347 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-14 16:52:03,589 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-14 16:52:03,866 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-14 16:52:04,088 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-14 16:52:04,263 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-14 16:52:04,584 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-14 16:52:04,908 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-14 16:52:05,131 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-14 16:52:05,399 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-14 16:52:05,556 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:52:05,831 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:52:06,013 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:52:06,212 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-14 16:52:06,471 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-14 16:52:07,049 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:52:07,246 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:52:07,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:07,419 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-14 16:52:07,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 16:52:07,419 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2018-10-14 16:52:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:07,421 INFO L225 Difference]: With dead ends: 361 [2018-10-14 16:52:07,421 INFO L226 Difference]: Without dead ends: 361 [2018-10-14 16:52:07,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1957, Invalid=9599, Unknown=0, NotChecked=0, Total=11556 [2018-10-14 16:52:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-14 16:52:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2018-10-14 16:52:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-14 16:52:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-14 16:52:07,430 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 316 [2018-10-14 16:52:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:07,430 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-14 16:52:07,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:52:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-14 16:52:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-14 16:52:07,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:07,433 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] [2018-10-14 16:52:07,433 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:07,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash 517718114, now seen corresponding path program 10 times [2018-10-14 16:52:07,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 1175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:10,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:10,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:52:10,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:52:10,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:52:10,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:52:10,175 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 41 states. [2018-10-14 16:52:18,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:18,875 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-14 16:52:18,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:52:18,876 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 339 [2018-10-14 16:52:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:18,878 INFO L225 Difference]: With dead ends: 384 [2018-10-14 16:52:18,878 INFO L226 Difference]: Without dead ends: 384 [2018-10-14 16:52:18,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1173, Invalid=7199, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:52:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-14 16:52:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 363. [2018-10-14 16:52:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-14 16:52:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-14 16:52:18,887 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 339 [2018-10-14 16:52:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:18,888 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-14 16:52:18,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:52:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-14 16:52:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-14 16:52:18,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:18,890 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] [2018-10-14 16:52:18,891 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:18,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1647996104, now seen corresponding path program 11 times [2018-10-14 16:52:18,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:21,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:21,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 16:52:21,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 16:52:21,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 16:52:21,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 16:52:21,238 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 39 states. [2018-10-14 16:52:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:30,123 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-14 16:52:30,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-14 16:52:30,123 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2018-10-14 16:52:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:30,125 INFO L225 Difference]: With dead ends: 407 [2018-10-14 16:52:30,125 INFO L226 Difference]: Without dead ends: 407 [2018-10-14 16:52:30,126 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 [2018-10-14 16:52:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-14 16:52:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 386. [2018-10-14 16:52:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-14 16:52:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-14 16:52:30,133 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 362 [2018-10-14 16:52:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:30,134 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-14 16:52:30,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 16:52:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-14 16:52:30,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-14 16:52:30,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:30,137 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] [2018-10-14 16:52:30,137 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:30,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:30,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1497165730, now seen corresponding path program 12 times [2018-10-14 16:52:30,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 0 proven. 1686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:33,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:33,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:52:33,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:52:33,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:52:33,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:52:33,148 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 41 states. [2018-10-14 16:52:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:42,892 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-10-14 16:52:42,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:52:42,893 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 385 [2018-10-14 16:52:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:42,895 INFO L225 Difference]: With dead ends: 430 [2018-10-14 16:52:42,896 INFO L226 Difference]: Without dead ends: 430 [2018-10-14 16:52:42,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1164, Invalid=7392, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:52:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-14 16:52:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 409. [2018-10-14 16:52:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-14 16:52:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-14 16:52:42,905 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 385 [2018-10-14 16:52:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:42,905 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-14 16:52:42,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:52:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-14 16:52:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-14 16:52:42,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:42,908 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] [2018-10-14 16:52:42,909 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:42,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:42,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1880933384, now seen corresponding path program 13 times [2018-10-14 16:52:42,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:45,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:45,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:52:45,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:52:45,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:52:45,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:52:45,980 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 43 states. [2018-10-14 16:52:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:57,087 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-14 16:52:57,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-14 16:52:57,088 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 408 [2018-10-14 16:52:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:57,090 INFO L225 Difference]: With dead ends: 453 [2018-10-14 16:52:57,090 INFO L226 Difference]: Without dead ends: 453 [2018-10-14 16:52:57,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1236, Invalid=8270, Unknown=0, NotChecked=0, Total=9506 [2018-10-14 16:52:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-14 16:52:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 432. [2018-10-14 16:52:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-14 16:52:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-10-14 16:52:57,098 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 408 [2018-10-14 16:52:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:57,099 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-10-14 16:52:57,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:52:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-10-14 16:52:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-14 16:52:57,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:57,102 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] [2018-10-14 16:52:57,102 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:57,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:57,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1567452898, now seen corresponding path program 14 times [2018-10-14 16:52:57,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 0 proven. 2289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:01,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:01,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-14 16:53:01,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-14 16:53:01,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-14 16:53:01,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2018-10-14 16:53:01,662 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 51 states. [2018-10-14 16:53:03,730 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:53:04,085 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:53:04,287 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:53:04,505 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-14 16:53:04,691 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-14 16:53:05,346 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-14 16:53:05,881 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-14 16:53:16,077 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-14 16:53:16,344 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-14 16:53:16,697 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-14 16:53:16,921 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-14 16:53:17,390 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:53:17,737 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:53:17,975 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:53:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:18,288 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2018-10-14 16:53:18,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-14 16:53:18,289 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 431 [2018-10-14 16:53:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:18,291 INFO L225 Difference]: With dead ends: 476 [2018-10-14 16:53:18,291 INFO L226 Difference]: Without dead ends: 476 [2018-10-14 16:53:18,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1701, Invalid=12341, Unknown=0, NotChecked=0, Total=14042 [2018-10-14 16:53:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-14 16:53:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 455. [2018-10-14 16:53:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-14 16:53:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-14 16:53:18,299 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 431 [2018-10-14 16:53:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:18,299 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-14 16:53:18,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-14 16:53:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-14 16:53:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-14 16:53:18,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:18,302 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] [2018-10-14 16:53:18,303 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:18,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:18,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1678273352, now seen corresponding path program 15 times [2018-10-14 16:53:18,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:23,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:23,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 16:53:23,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 16:53:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 16:53:23,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:53:23,509 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 56 states. [2018-10-14 16:53:25,989 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-14 16:53:26,764 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-14 16:53:27,000 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-14 16:53:27,304 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-14 16:53:27,679 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-14 16:53:27,929 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-14 16:53:28,182 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-14 16:53:28,410 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-14 16:53:29,116 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-14 16:53:29,405 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-14 16:53:29,783 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-14 16:53:30,054 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-14 16:53:30,317 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-14 16:53:30,512 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-14 16:53:31,159 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-14 16:53:31,573 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-14 16:53:31,950 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-14 16:53:32,213 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-14 16:53:32,464 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2018-10-14 16:53:32,655 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-14 16:53:33,338 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-14 16:53:33,954 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-14 16:53:34,153 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-14 16:53:34,832 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:35,027 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:53:35,700 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:35,893 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:53:36,085 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-14 16:53:36,647 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:36,835 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:53:37,549 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:37,742 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-14 16:53:38,413 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-14 16:53:38,640 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-14 16:53:39,388 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 16:53:39,573 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-14 16:53:40,248 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-14 16:53:40,437 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-14 16:53:41,117 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-14 16:53:41,338 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-14 16:53:41,617 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-14 16:53:41,984 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-14 16:53:42,245 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-14 16:53:42,468 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-14 16:53:42,852 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-14 16:53:43,207 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-14 16:53:43,453 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-14 16:53:43,802 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-14 16:53:44,015 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:53:44,320 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:53:44,531 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-14 16:53:44,755 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-14 16:53:45,009 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-14 16:53:45,566 WARN L179 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-14 16:53:45,978 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-14 16:53:46,173 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:53:46,390 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-14 16:53:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:46,582 INFO L93 Difference]: Finished difference Result 499 states and 499 transitions. [2018-10-14 16:53:46,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:53:46,582 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 454 [2018-10-14 16:53:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:46,584 INFO L225 Difference]: With dead ends: 499 [2018-10-14 16:53:46,584 INFO L226 Difference]: Without dead ends: 499 [2018-10-14 16:53:46,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=2679, Invalid=18491, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:53:46,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-14 16:53:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2018-10-14 16:53:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-14 16:53:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2018-10-14 16:53:46,591 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 454 [2018-10-14 16:53:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:46,592 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2018-10-14 16:53:46,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 16:53:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2018-10-14 16:53:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-14 16:53:46,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:46,595 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] [2018-10-14 16:53:46,595 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:46,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:46,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2061418974, now seen corresponding path program 16 times [2018-10-14 16:53:46,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 0 proven. 2984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:52,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:52,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:53:52,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:53:52,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:53:52,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:53:52,001 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand 57 states. [2018-10-14 16:53:59,069 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-14 16:53:59,659 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:53:59,861 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:54:01,109 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:54:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:08,101 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2018-10-14 16:54:08,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-14 16:54:08,101 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 477 [2018-10-14 16:54:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:08,104 INFO L225 Difference]: With dead ends: 522 [2018-10-14 16:54:08,104 INFO L226 Difference]: Without dead ends: 522 [2018-10-14 16:54:08,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1685, Invalid=14571, Unknown=0, NotChecked=0, Total=16256 [2018-10-14 16:54:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-14 16:54:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 501. [2018-10-14 16:54:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-10-14 16:54:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2018-10-14 16:54:08,112 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 477 [2018-10-14 16:54:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:08,113 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2018-10-14 16:54:08,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:54:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2018-10-14 16:54:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-14 16:54:08,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:08,116 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] [2018-10-14 16:54:08,116 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:08,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1110532744, now seen corresponding path program 17 times [2018-10-14 16:54:08,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 3366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:12,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:12,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:54:12,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:54:12,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:54:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2995, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:54:12,547 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 57 states. [2018-10-14 16:54:14,375 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-14 16:54:14,694 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:54:15,073 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:54:15,282 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:54:15,525 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-14 16:54:15,761 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:54:16,157 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-14 16:54:16,428 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:54:16,959 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-14 16:54:17,207 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-14 16:54:17,404 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-14 16:54:18,072 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-14 16:54:18,368 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:54:18,757 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:54:19,014 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:54:19,269 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:54:19,480 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-14 16:54:20,199 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-14 16:54:20,502 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-14 16:54:20,919 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-14 16:54:21,189 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-14 16:54:21,476 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-14 16:54:21,687 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-14 16:54:22,108 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-14 16:54:22,396 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-14 16:54:22,706 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-14 16:54:23,110 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:54:23,400 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-14 16:54:23,688 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2018-10-14 16:54:23,897 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:54:24,328 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:54:24,636 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-14 16:54:25,007 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:54:25,438 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-14 16:54:25,732 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2018-10-14 16:54:25,956 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:54:26,700 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2018-10-14 16:54:26,933 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2018-10-14 16:54:27,721 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-10-14 16:54:27,959 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:54:28,748 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-14 16:54:28,981 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:54:29,762 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:54:30,051 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:54:30,808 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-14 16:54:31,025 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:54:31,782 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:54:32,009 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:54:32,404 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-14 16:54:32,787 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-14 16:54:33,046 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-14 16:54:33,357 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-14 16:54:33,760 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-14 16:54:34,048 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-14 16:54:34,294 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2018-10-14 16:54:34,731 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-10-14 16:54:35,193 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-14 16:54:35,466 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-14 16:54:35,827 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2018-10-14 16:54:36,035 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-14 16:54:36,382 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-14 16:54:36,614 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-14 16:54:36,861 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-14 16:54:37,151 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-14 16:54:37,350 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-14 16:54:37,688 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-14 16:54:37,907 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-14 16:54:38,141 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-14 16:54:38,400 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-14 16:54:38,598 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:54:38,772 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-14 16:54:38,952 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:54:39,164 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:54:39,390 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-14 16:54:39,654 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-14 16:54:40,157 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:54:40,410 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:54:40,644 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:54:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:40,865 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-14 16:54:40,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-14 16:54:40,866 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 500 [2018-10-14 16:54:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:40,868 INFO L225 Difference]: With dead ends: 545 [2018-10-14 16:54:40,868 INFO L226 Difference]: Without dead ends: 545 [2018-10-14 16:54:40,869 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 [2018-10-14 16:54:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-14 16:54:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2018-10-14 16:54:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-14 16:54:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 524 transitions. [2018-10-14 16:54:40,877 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 524 transitions. Word has length 500 [2018-10-14 16:54:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:40,877 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 524 transitions. [2018-10-14 16:54:40,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:54:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 524 transitions. [2018-10-14 16:54:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-14 16:54:40,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:40,881 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] [2018-10-14 16:54:40,881 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:40,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1326210402, now seen corresponding path program 18 times [2018-10-14 16:54:40,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 3771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:46,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:46,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:54:46,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:54:46,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:54:46,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3568, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:54:46,817 INFO L87 Difference]: Start difference. First operand 524 states and 524 transitions. Second operand 62 states. [2018-10-14 16:54:49,977 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-14 16:54:50,150 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-14 16:54:50,656 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-14 16:54:50,885 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-14 16:54:51,324 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:54:51,557 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-14 16:54:52,368 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-14 16:54:52,595 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:54:52,893 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:54:53,298 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:54:53,565 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:54:53,831 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:54:54,027 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-14 16:54:54,713 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-14 16:54:55,012 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-14 16:54:55,440 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-14 16:54:55,756 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-14 16:54:56,039 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-14 16:54:56,247 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-14 16:54:56,677 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-14 16:54:56,972 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-14 16:54:57,286 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-14 16:54:57,697 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:54:57,986 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-14 16:54:58,285 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-14 16:54:58,491 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-14 16:54:58,910 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-14 16:54:59,201 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-14 16:54:59,511 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-14 16:54:59,915 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-14 16:55:00,214 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-14 16:55:00,539 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-14 16:55:00,809 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-14 16:55:01,231 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-14 16:55:01,510 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-14 16:55:02,064 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-14 16:55:02,336 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 16:55:02,531 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 16:55:02,942 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-14 16:55:03,212 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-14 16:55:03,772 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-14 16:55:04,001 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:55:04,800 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-14 16:55:05,035 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:55:05,842 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:55:06,080 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:55:06,846 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-14 16:55:07,074 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:55:07,824 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:55:08,058 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:55:08,807 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-14 16:55:09,026 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:55:09,412 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-14 16:55:09,770 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-14 16:55:10,013 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-14 16:55:10,317 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2018-10-14 16:55:10,758 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-14 16:55:11,076 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-10-14 16:55:11,316 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-14 16:55:11,504 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-14 16:55:11,755 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-14 16:55:12,146 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-14 16:55:12,419 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-14 16:55:12,761 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2018-10-14 16:55:12,955 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-14 16:55:13,299 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-14 16:55:13,518 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2018-10-14 16:55:13,748 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-14 16:55:14,010 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-14 16:55:14,200 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-14 16:55:14,542 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:55:14,766 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-14 16:55:15,007 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-14 16:55:15,263 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-14 16:55:15,445 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-14 16:55:15,799 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:55:16,078 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:55:16,303 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-14 16:55:16,552 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-14 16:55:17,164 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:17,382 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:17,590 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2018-10-14 16:55:17,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-14 16:55:17,590 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 523 [2018-10-14 16:55:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:17,593 INFO L225 Difference]: With dead ends: 568 [2018-10-14 16:55:17,593 INFO L226 Difference]: Without dead ends: 568 [2018-10-14 16:55:17,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=3776, Invalid=26674, Unknown=0, NotChecked=0, Total=30450 [2018-10-14 16:55:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-14 16:55:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 547. [2018-10-14 16:55:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-14 16:55:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-14 16:55:17,600 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 523 [2018-10-14 16:55:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:17,601 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-14 16:55:17,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:55:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-14 16:55:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-14 16:55:17,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:55:17,605 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] [2018-10-14 16:55:17,605 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:55:17,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:55:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash 741627448, now seen corresponding path program 19 times [2018-10-14 16:55:17,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:55:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:55:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 4199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:55:23,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:55:23,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-14 16:55:23,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-14 16:55:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-14 16:55:23,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3993, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:55:23,897 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 66 states. [2018-10-14 16:55:26,302 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:55:33,459 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:55:33,725 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:34,096 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:34,321 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:55:35,127 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:35,356 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:35,844 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-14 16:55:36,348 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-14 16:55:36,763 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:36,987 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:37,472 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-14 16:55:38,424 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:55:38,700 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-14 16:55:39,061 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-14 16:55:39,340 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-14 16:55:39,663 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-14 16:55:39,921 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-14 16:55:40,385 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-14 16:55:40,702 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-14 16:55:41,292 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-14 16:55:41,586 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2018-10-14 16:55:41,826 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2018-10-14 16:55:42,087 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-14 16:55:42,473 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-14 16:55:42,749 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-14 16:55:43,294 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-14 16:55:43,572 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-14 16:55:44,013 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2018-10-14 16:55:44,407 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-14 16:55:44,685 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-14 16:55:45,230 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2018-10-14 16:55:45,484 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-14 16:55:45,663 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2018-10-14 16:55:45,861 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-14 16:55:46,093 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-14 16:55:46,344 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-14 16:55:46,675 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-14 16:55:46,969 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-14 16:55:47,328 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-14 16:55:47,565 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-14 16:55:47,822 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-14 16:55:48,109 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-14 16:55:48,324 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-14 16:55:48,682 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-14 16:55:48,915 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-14 16:55:49,161 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-14 16:55:49,443 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-14 16:55:49,640 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-14 16:55:50,030 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:55:50,270 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:55:50,513 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-14 16:55:50,870 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-14 16:55:51,313 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-14 16:55:51,533 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-14 16:55:51,819 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-14 16:55:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:52,156 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2018-10-14 16:55:52,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-14 16:55:52,157 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 546 [2018-10-14 16:55:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:52,161 INFO L225 Difference]: With dead ends: 591 [2018-10-14 16:55:52,161 INFO L226 Difference]: Without dead ends: 591 [2018-10-14 16:55:52,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7728 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=3611, Invalid=27895, Unknown=0, NotChecked=0, Total=31506 [2018-10-14 16:55:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-14 16:55:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 570. [2018-10-14 16:55:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-10-14 16:55:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2018-10-14 16:55:52,169 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 546 [2018-10-14 16:55:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:52,170 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2018-10-14 16:55:52,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-14 16:55:52,170 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2018-10-14 16:55:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-10-14 16:55:52,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:55:52,174 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] [2018-10-14 16:55:52,174 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:55:52,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:55:52,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1629303646, now seen corresponding path program 20 times [2018-10-14 16:55:52,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:55:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:55:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 4231 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:55:53,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:55:53,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:55:53,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:55:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:55:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:55:53,560 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand 43 states. [2018-10-14 16:55:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:54,563 INFO L93 Difference]: Finished difference Result 555 states and 554 transitions. [2018-10-14 16:55:54,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-14 16:55:54,570 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 569 [2018-10-14 16:55:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:54,571 INFO L225 Difference]: With dead ends: 555 [2018-10-14 16:55:54,571 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:55:54,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2010, Invalid=4796, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:55:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:55:54,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:55:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:55:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:55:54,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 569 [2018-10-14 16:55:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:54,572 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:55:54,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:55:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:55:54,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:55:54,578 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 14.10 04:55:54 BoogieIcfgContainer [2018-10-14 16:55:54,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:55:54,579 INFO L168 Benchmark]: Toolchain (without parser) took 301880.95 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -81.3 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 168.9 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:54,580 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. [2018-10-14 16:55:54,580 INFO L168 Benchmark]: Boogie Preprocessor took 99.46 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. [2018-10-14 16:55:54,580 INFO L168 Benchmark]: RCFGBuilder took 796.25 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:54,581 INFO L168 Benchmark]: TraceAbstraction took 300981.02 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -81.3 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.7 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:54,582 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 99.46 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 796.25 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 300981.02 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -81.3 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.7 MB). Peak memory consumption was 45.4 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, 300.9s OverallTime, 21 OverallIterations, 21 TraceHistogramMax, 237.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3969 SDtfs, 57830 SDslu, 67561 SDs, 0 SdLazy, 91685 SolverSat, 3389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 82 SyntacticMatches, 17 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47385 ImplicationChecksByTransitivity, 180.4s 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, 50.7s 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-0-2018-10-14_16-55-54-590.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-0-2018-10-14_16-55-54-590.csv Received shutdown request...